---
title: MOSFET Selection Guide for Cordless Power Tools and BLDC Motor Drives
description: Learn how to select the right MOSFETs for cordless power tools and BLDC motor drives. Explore key design considerations including efficiency, switching performance, thermal management, battery life, and motor control requirements.
image: https://solutions.mccsemi.com/hubfs/Mosfet%20guide%20-%20mcc%20semi%20%281%29.png
---

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# MOSFET Selection Guide for Cordless Power Tools and BLDC Motor Drives

## VDS Ratings, Battery Voltage, and Power Tool Design Considerations

- Topics Covered in this Guide
- [BLCD Power Tool Platforms](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#The_transition)
- [Selecting the Right MOSFET](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#Selecting_the_right)
- [Stress Conditions](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#stress_conditions)
- [Battery-powered Architecture](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#Battery_Powered)
- [Grid-Powered Architecture](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#Grid_powered)
- [MOSFET Packages for Power Tools](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#Mainstream_MOSFET)
- [How to Select MOSFETs](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#How_to_select_MOSFET)
- [Portfolio by Battery Platform](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#MCC_MOSFET_Portfolio)
- [Case Study](https://solutions.mccsemi.com/mosfet-selection-guide-for-power-tools-and-bldc-motor-drives#Case_Study_40V)

## MOSFET Selection and VDS Ratings in Power Tool Motor Drives

Selecting the right MOSFET for cordless and corded power tools requires balancing voltage rating, current capability, and switching performance. In motor drivers, battery protection, and power conversion circuits, these choices directly impact efficiency, thermal behavior, and system reliability.

Cordless power tools have advanced quickly over the last decade, driven by two main changes: higher-performance lithium-ion battery packs and the shift from brushed motors to electronically controlled BLDC motors.

BLDC motors remove the mechanical brushes used in traditional designs and replace them with electronic commutation. This improves efficiency, allows more precise torque control, and reduces mechanical wear in high-duty cordless power tools such as drills, grinders, and saws.

Motor driver circuits in power tools must meet several key design requirements: 

- High torque output
- Fast transient response
- Reliable thermal management
- Compact form factor for handheld devices

MOSFETs used in the motor driver and protection circuits must handle high current, voltage spikes, and repeated load transients during normal tool operation.

Selecting MOSFETs for BLDC motor drivers requires setting the right VDS margin and understanding how system conditions such as load transients, switching frequency, and thermal limits affect device performance in both cordless and corded power tools.

## Market Growth of Cordless Power Tools

Improvements in lithium-ion batteries have allowed cordless tools to deliver higher power and longer runtime, making them competitive with traditional corded tools. At the same time, BLDC motor controllers increase efficiency and power density, allowing cordless platforms to rival the performance of AC-powered devices. 

As cordless tools move to higher current levels and higher power density, MOSFET losses and thermal behavior become more important in the motor driver stage. The inverter must efficiently convert battery energy into controlled phase current while handling large switching currents and transient loads. 

## High-Efficiency BLDC Power Tool Platforms

Modern cordless tools benefit from improvements in lithium-ion battery technology, including better energy density and higher burst current capability. This supports demanding applications such as drilling, cutting, grinding, and fastening. 

 

At the same time, manufacturers have shifted from brushed DC motors to BLDC motors, which require semiconductor‑based electronic commutation. 

 

In power tools, BLDC motor control offers several design and performance advantages:  

 

- Higher efficiency compared with brushed motors
- Better torque output relative to motor size
- Reduced maintenance because there are no brushes to wear out
- More precise speed and torque control through electronic commutation

 

BLDC motor control requires an inverter stage built with power MOSFETs to switch current through the motor windings. The MOSFET selected for the motor inverter affects inverter efficiency, current handling capability, and thermal performance during heavy load conditions such as startup or stall. 

## Selecting the Right MOSFET VDS Rating by Battery Voltage

BLDC motor drivers must withstand voltage spikes caused by inductive switching, regenerative braking, and transient loads. Because of these effects, MOSFET VDS ratings are selected significantly above the nominal battery voltage.  

| ![12V battery systems](https://solutions.mccsemi.com/hs-fs/hubfs/12V%20battery%20systems.png?width=500&height=300&name=12V%20battery%20systems.png) | ![18V-24V battery system mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/18V-24V%20battery%20system%20mcc%20semi.png?width=500&height=300&name=18V-24V%20battery%20system%20mcc%20semi.png) | ![36V-48V Battery systems - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/36V-48V%20Battery%20systems%20-%20mcc%20semi.png?width=500&height=300&name=36V-48V%20Battery%20systems%20-%20mcc%20semi.png) |
| --- | --- | --- |
| ### 12V Battery Systems | ### 18V – 24V Battery Systems | ### 36V – 48V Battery Systems |
| Recommended VDS Rating  **30V – 40V** | Recommended VDS Rating  **40V – 80V** | Recommended VDS Rating  **80V – 100V** |
| Typical applications include: - Compact cordless drills - Electric screwdrivers - Lightweight DIY tools | Typical applications include: - Impact drivers - Circular saws - Hammer drills - Angle grinders - Outdoor power equipment - Lawn mowers - Industrial cordless tools | Typical applications include: - Outdoor power equipment - Lawn mowers - Industrial cordless tools |
| Low-voltage MOSFETs prioritize compact size and cost efficiency. | 40V MOSFETs typically provide sufficient margin for switching spikes and inductive transients. | Higher VDS MOSFETs are required to maintain margin under higher bus voltage and load conditions. |

 

For more details, see: [The Essential Guide to 40V MOSFET Functions and Features](https://solutions.mccsemi.com/the-essential-guide-to-40v-mosfet-functions?hsLang=en)

### Motor Drive Stress Conditions

 

![Electrical Stress Conditions in Power Tool Motor Drives - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/Electrical%20Stress%20Conditions%20in%20Power%20Tool%20Motor%20Drives%20-%20mcc%20semi.gif?width=1000&height=500&name=Electrical%20Stress%20Conditions%20in%20Power%20Tool%20Motor%20Drives%20-%20mcc%20semi.gif)

 

## Electrical Stress in Power Tool Motor Drivers

MOSFETs used in power tool motor drivers operate under demanding electrical conditions. During normal operation, they must handle large current surges, fast PWM switching, and voltage spikes generated by the motor windings.

- **High surge current** during startup
- **Stall currents** under heavy load
- **Fast switching transition**s during PWM operation
- **Inductive voltage spikes** from motor windings

To ensure robust performance, MOSFETs for power tools should provide: 

- **Low RDS(on)**: reduces conduction losses and heat generation
- **High current capability**: supports surge and stall events
- **Strong avalanche ruggedness**: protects against inductive switching stress

Together, these parameters determine how much power the MOSFET dissipates during operation and how well the device manages heat under heavy motor loads.

## Battery-Powered Power Tool Architecture

Cordless power tools convert stored lithium‑ion battery energy into mechanical motion through a series of power conversion stages:

**Battery Pack – Battery Protection – Motor Driver – BLDC Motor**

#### **Primary System Blocks**

| **System Block** | **Function** | **Typical Components** |
| --- | --- | --- |
| **Battery Pack** | Stores lithium‑ion energy | Li‑ion cells |
| **Battery Protection** | Prevents short circuits and over‑current events | Protection MOSFETs |
| **Motor Driver** | Converts DC voltage into controlled motor drive signals | MOSFET inverter |
| **Motor Unit** | Converts electrical energy into torque | BLDC motor |

 

Most manufacturers develop the battery pack and motor internally, while chargers are typically outsourced to power supply specialists.

 

**Battery Pack Block Diagram**   

![battery powered power tools - battery back - transparent - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/battery%20powered%20power%20tools%20-%20battery%20back%20-%20transparent%20-%20mcc%20semi.png?width=831&height=499&name=battery%20powered%20power%20tools%20-%20battery%20back%20-%20transparent%20-%20mcc%20semi.png)

Recommended parts:

| **Block #** | **Function** | **Requirements** | **Product Family** | **Packages** | **Recommended Parts** |
| --- | --- | --- | --- | --- | --- |
| 1 | Balancing MOSFET | VDS \> 2x V+ | P/N-Ch MOSFET​ 30V – 100V | SOT-23​ SOT-23​ SOT-23​ DFN1006-3 | [BSS84A](https://www.mccsemi.com/products/mosfets/small-signal-mosfets/bss84a) [2N7002A](https://www.mccsemi.com/products/mosfets/small-signal-mosfets/2n7002a) [SI2306K](https://www.mccsemi.com/products/mosfets/small-signal-mosfets/si2306k) [2N7002KL3A](https://www.mccsemi.com/products/mosfets/small-signal-mosfets/2n7002kl3a) |
| 2 | Batter Reverse Protection | VDS \> 2x V+​ Low RDS(on)​ High ID Max​ Strong SOA | MOSFET ​​ 40V – 100V | TOLL-8​ TOLL-8​ PDFN5060 | [MCTL2D0N10YHR](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl2d0n10yhr) [MCTL1D0N08Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d0n08y) [MCACL1D7N04YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl1d7n04yh) |

 

**Battery Charger Block Diagram**

![battery powered power tools battery charger - transparent - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/battery%20powered%20power%20tools%20battery%20charger%20-%20transparent%20-%20mcc%20semi.png?width=831&height=499&name=battery%20powered%20power%20tools%20battery%20charger%20-%20transparent%20-%20mcc%20semi.png)Recommended parts:

| **Block #** | **Function** | **Requirements** | **Product Family** | **Packages** | **Recommended Parts** |
| --- | --- | --- | --- | --- | --- |
| 1 | OV Protection | VRWM = V+ | TVS | SMA, ​ SMA-FL​ SMB SMBF | [SMAJxxA series](https://www.mccsemi.com/global/search/SMAJ) [SMA6JxxA series](https://www.mccsemi.com/global/search/SMA6J) [SMBJxxA series](https://www.mccsemi.com/global/search/SMBJ) [SMBFxxA series](https://www.mccsemi.com/global/search/SMBF) |
| 2 | Output Switch | VDS \> 2x V+ | P-Ch MOSFET​ 40V – 100V | DFN3333​ DFN5060​ DPAK | [MCAC25P10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcac25p10y) [MCAC80P06Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcac80p06y) [MCG25P06Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcg25p06y) [MCU28P10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcu28p10y) |

 

**Motor Unit Block Diagram**

**![battery powered power tools - motor unit - transparent - - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/battery%20powered%20power%20tools%20-%20motor%20unit%20-%20transparent%20-%20-%20mcc%20semi.png?width=1000&height=600&name=battery%20powered%20power%20tools%20-%20motor%20unit%20-%20transparent%20-%20-%20mcc%20semi.png)**

Recommended parts:

| **Block #** | **Function** | **Requirements** | **Product Family** | **Packages** | **Recommended Parts** |
| --- | --- | --- | --- | --- | --- |
| 1 | OV Protection | VRWM = V+ | TVS | SMA, S​ MA-FL​ SMB​ SMBF | [SMAJxxA series](https://www.mccsemi.com/global/search/SMAJ) [SMA6JxxA series](https://www.mccsemi.com/global/search/SMA6J) [SMBJxxA series](https://www.mccsemi.com/global/search/SMBJ) [SMBFxxA series](https://www.mccsemi.com/global/search/SMBF) |
| 2 | Power Stage | VDS \> 2x V+​ Ultra Low RDS(ON) | MOSFET ​​ 40V – 100V | TOLL-8 ​ TOLL-8​ PDFN5060-DSC​ PDFN5060​ TOLL-8​ TOLL-8 | [MCTL1D0N08Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d0n08y) [MCTLD58N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctld58n04y) [MCACLS1D6N06YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacls1d6n06yh) [MCACL1D2N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl1d2n04y) [MCACL120N10YA](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl120n10ya) [MCACL220N06Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl220n06y) |

 

## Grid-Powered Power Tool Architecture

Grid-powered tools operate directly from AC mains and use a simplified power conversion architecture:

**AC Input – Rectification – DC Bus – Motor Driver – Motor**

##### Primary System Block

| **System Block** | **Function** | **Typical Components** |
| --- | --- | --- |
| **AC Input** | Connects tool to mains power | Input filtering |
| **Rectification** | Converts AC to DC | Rectifier diodes |
| **Power Stage** | Drives the motor | MOSFETs / IGBTs |
| **Protection** | Protects against voltage spikes | Surge protection devices |
| **Controller** | Controls system operation | Control ICs |

 

Because these systems do not require battery management, overall complexity is lower.

 

**Grid Power Tools Block Diagram:**

![grid power tools - transparent - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/grid%20power%20tools%20-%20transparent%20-%20mcc%20semi.png?width=1000&height=600&name=grid%20power%20tools%20-%20transparent%20-%20mcc%20semi.png)

Recommended parts:

| Block # | Function | Requirements | Product Family | Packages | Recommended Parts |
| --- | --- | --- | --- | --- | --- |
| 1 | Rectification |  | Bridge / Standard Rectifiers | GBU​ GBJ​ TBL​ JB​ SMC | [GBU6MS](https://www.mccsemi.com/products/diodes/bridge-rectifiers/gbu6ms) [GBJ1006](https://www.mccsemi.com/products/diodes/bridge-rectifiers/gbj1006) [KBJA608](https://www.mccsemi.com/products/diodes/bridge-rectifiers/kbja608) [TBL608L](https://www.mccsemi.com/products/diodes/bridge-rectifiers/tbl608l) [SMLJ60S8](https://www.mccsemi.com/products/diodes/standard-recovery-rectifiers/smlj60s8) |
| 2 | Power Stage | \>=650V | IGBT & SiC | D2PAK ​ TO220​ TO247​ TO247-4 | [MIB10N65AT1Y](https://www.mccsemi.com/products/igbt/igbt-discrete/mib10n65at1y)​ [MIP15N65AT1Y](https://www.mccsemi.com/products/igbt/igbt-discrete/mip15n65at1y) [MIW20N65AT0Y](https://www.mccsemi.com/products/igbt/igbt-discrete/miw20n65at0y) [SICWZ025N075G3](https://www.mccsemi.com/products/silicon-carbide-sic/sic-mosfets/sicwz025n075g3) |
| 3 | OV Protection | VRWM = V+ | TVS | SMA, ​ SMA-F​ SMB​ SMBF | [SMAJxxA series](https://www.mccsemi.com/global/search/SMAJ) [SMA6JxxA series](https://www.mccsemi.com/global/search/SMA6J) [SMBJxxA series](https://www.mccsemi.com/global/search/SMBJ) [SMBFxxA series](https://www.mccsemi.com/global/search/SMBF) |

 

 

## MOSFET Packages for Power Tools

MOSFETs for power tools commonly range from 30 V to 100 V and are available in compact, thermally efficient packages built for high-current operation.

- **30–40V** → 12V / 18V compact tools
- **40–60V** → Professional 18–24V systems
- **80–100V** → Outdoor and industrial equipment

![battery powered tools overview by voltage - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/battery%20powered%20tools%20overview%20by%20voltage%20-%20mcc%20semi.png?width=1000&height=500&name=battery%20powered%20tools%20overview%20by%20voltage%20-%20mcc%20semi.png)

 

## How to Select MOSFETs for Power Tool Motor Drivers

In BLDC motor drivers, MOSFET selection affects conduction losses, switching losses, and device temperature during high-current operation. Engineers must carefully evaluate several key electrical and thermal parameters to select the most suitable device for cordless and corded power tool applications.  

## VDS Selection: Voltage Margin

The MOSFET’s drain-to-source voltage (VDS) rating must be high enough to withstand voltage spikes generated during inductive switching, regenerative braking, and sudden load changes in BLDC motor systems.

In many power tool designs, the MOSFET VDS rating is selected above the nominal battery voltage to provide margin for transient events. Based on common power tool battery platforms, typical selections include:

- 12 V systems: 30–40 V MOSFETs
- 18–24 V systems: 40–80 V MOSFETs
- 36–48 V systems: 80–100 V MOSFETs

These voltage ranges provide sufficient headroom to accommodate switching transients while maintaining efficient motor driver operation.

## RDS(ON): Conduction Losses

**RDS(on)** directly influences conduction losses and overall system efficiency. Lower RDS(on) is especially critical for power tools, which must deliver high peak currents within compact thermal envelopes.

Lower RDS(on) helps:

- Reduce power dissipation
- Improve battery runtime
- Lower junction temperature
- Enhance thermal reliability in handheld tools

In BLDC motor drivers, minimizing RDS(on) leads to better torque output and longer operating time, particularly in18 V and 36 V cordless power tool platforms.

## Gate Charge (Qg): Switching Efficiency

Gate charge (Qg) determines how much energy is required to drive the MOSFET during switching. Lower gate charge reduces switching losses, making it a key parameter for PWM-driven BLDC motor controllers.

Lower Qg enables:

- Faster switching transitions
- Lower switching losses
- Improved efficiency at higher PWM frequencies
- Reduced gate driver power consumption

This is especially important in high‑speed BLDC motor drives commonly used in tools such as impact drivers, grinders, and circular saws.

## Thermal Performance

Thermal management is a key constraint in cordless power tools, where limited airflow, small PCB areas, and sealed enclosures restrict heat dissipation. As a result, MOSFET thermal performance directly impacts system reliability and sustained operation under high-current motor loads.

Key thermal considerations include:

- Package thermal resistance (RθJC, RθJA)
- PCB copper area and thermal spreading design
- Maximum allowable junction temperature (Tj)

Selecting MOSFETs with robust thermal characteristics helps ensure stable operation during startup surges, stall events, and extended high‑load usage.

## MOSFET Portfolio by Battery Platform

MCC offers MOSFETs optimized for the most common power tool battery platforms.

| **Battery Platform** | **Typical MOSFET Voltage** | **Example Applications** |
| --- | --- | --- |
| **12 V** | 30–40 V | Compact cordless tools |
| **18 V** | 40 V | Professional power tools |
| **24 V** | 60 V | Heavy-duty cordless tools |
| **36–48 V** | 80–100 V | Outdoor power equipment |

 

## **12V and 18V System: MCC 30-40V MOSFETs**

| **Product** | **Channel** | **Package Type** | **VDS (V)** | **ID (A)** | **RDS(ON)Max​ @VGS=10V (mΩ)** | **VGS(th) Min​ (V)** | **VGS(th) Max​ (V)** | **Tj \[max\]​ (°C)** | **EAS(mJ)** | **Qgd(nC)** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [MCACL1D2N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl1d2n04y) | N | PDFN5060 | 40 | 321 | 1.2 | 2 | 3.5 | 175 | 529 | 14.9 |
| [MCACL1D6N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl1d6n04y) | N | PDFN5060-C | 40 | 220 | 1.6 | 2 | 4 | 175 | 240 | 12.3 |
| [MCACL1D7N04YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl1d7n04yh) | N | DFN5060-C | 40 | 180 | 1.7 | 2 | 4 | 175 | 506 | 10 |
| [MCAC180N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcac180n04y) | N | DFN5060 | 40 | 180 | 2 | 2 | 4 | 175 | 441 | 5.5 |
| [MCTLD58N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctld58n04y) | N | TOLL-8L | 40 | 639 | 0.58 | 2 | 4 | 175 | 2964 | 47.4 |
| [MCTL270N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl270n04y) | N | TOLL-8L | 40 | 270 | 1.3 | 2 | 4 | 175 | 1521 | 40.5 |
| [MCTL1D4N04YL](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d4n04yl) | N | TOLL-8L | 40 | 210 | 1.4 | 1.3 | 2.3 | 150 | 600 | 15 |

## **24V and 48V System: MCC 60-100V MOSFETs**

| **Product** | **Channel** | **Package Type** | **VDS (V)** | **ID (A)** | **RDS(ON)Max​ @VGS=10V (mΩ)** | **VGS(th) Min​ (V)** | **VGS(th) Max​ (V)** | **Tj \[max\]​ (°C)** | **EAS(mJ)** | **Qgd (nC)** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [MCACL2D4N10YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacl2d4n10yh) | N | PDFN5060-CW | 100 | 312 | 2.4 | 2 | 4 | 175 | 1000 | 16 |
| [MCAC4D6N10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mcac4d6n10y) | N | DFN5060 | 100 | 144 | 4.6 | 2.4 | 3.4 | 150 | 225 | 8.6 |
| [MCACLS1D6N06YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mcacls1d6n06yh) | N | PDFN5060-DSC-B | 60 | 300 | 1.68 | 2 | 4 | 175 | 670 | 17.7 |
| [MCTL1D0N08Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d0n08y) | N | TOLL-8L | 80 | 320 | 1 | 2 | 4 | 175 | 2401 | 79.4 |
| [MCTL1D2N10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d2n10y) | N | TOLL-8L | 100 | 320 | 1.2 | 2 | 4 | 175 | 2400 | 33 |
| [MCTL1D4N10YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d4n10yh) | N | TOLL-8L | 100 | 300 | 1.4 | 2.5 | 4.5 | 150 | 1800 | 34.4 |
| [MCTL300N10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl300n10y) | N | TOLL-8L | 100 | 300 | 1.45 | 2 | 4 | 150 | 648 | 59 |
| [MCTL1D5N10YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mctl1d5n10yh) | N | TOLL-8L | 100 | 360 | 1.5 | 2 | 4 | 175 | 2016 | 32 |
| [MCTT1D7N10Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctt1d7n10y) | N | TOLT | 100 | 333 | 1.7 | 2 | 4 | 175 | 2722 | 49 |
| [MCTT1D9N10YH](https://www.mccsemi.com/products/mosfets/power-mosfets/mctt1d9n10yh) | N | TOLT | 100 | 272 | 1.9 | 2.2 | 3.8 | 175 | 1225 | 17 |

## Case Study:

### 40V MOSFET for an 18V Cordless Power Tool BLDC Motor Drive

![case study 18V cordless power tool](https://solutions.mccsemi.com/hs-fs/hubfs/case%20study%2018V%20cordless%20power%20tool.png?width=1000&height=300&name=case%20study%2018V%20cordless%20power%20tool.png)

### Application Overview

A global power tool manufacturer evaluated an MCC **40V MOSFET for its 18V platform** used in drills, grinders, and saws. The device is part of the BLDC motor inverter stage.

### Design Challenge

Motor drivers must tolerate:

- High startup currents
- Stall overload conditions
- Inductive voltage spikes
- Rapid PWM switching transitions

The MOSFET needed low losses, strong current handling, and stable switching across the tool’s operating range. 

### Device Requirements

The tool manufacturer required: 

- **Low RDS(on)** for higher efficiency
- **High current capability** for surge and stall events
- **Stable switching behavior** under BLDC control
- **Strong avalanche capability** for inductive ruggedness

 

### Engineering Evaluation

MCC’s engineering team reviewed system requirements and confirmed that an existing MCC MOSFET met performance targets. Samples were delivered within three weeks for evaluation.

Following customer validation, the device demonstrated the required electrical performance in the motor driver system and is being evaluated for use in next‑generation cordless tools.

 

| ![quote icon](https://solutions.mccsemi.com/hubfs/icon-quote.svg)**Power tool motor drivers place stringent demands on MOSFET performance, particularly in terms of RDS(on), current capability, and switching robustness. After reviewing the customer’s electrical specifications and application conditions, our team confirmed that the selected device met all requirements for the platform.”**  MCC FAE Team |
| --- |

 

![Visual MCTLD58N04Y\_  Power MOSFET\_ - N-channel mosfet - mcc semi](https://solutions.mccsemi.com/hs-fs/hubfs/Visual%20MCTLD58N04Y_%20%20Power%20MOSFET_%20-%20N-channel%20mosfet%20-%20mcc%20semi.gif?width=1000&height=500&name=Visual%20MCTLD58N04Y_%20%20Power%20MOSFET_%20-%20N-channel%20mosfet%20-%20mcc%20semi.gif)

### Solution: MCTLD58N04Y

Based on the evaluation, the [MCTLD58N04Y](https://www.mccsemi.com/products/mosfets/power-mosfets/mctld58n04y)40V N-channel MOSFET was selected for the BLDC inverter stage of the 18V platform.

The device meets the required low RDS(on), high current capability, and stable switching performance for motor drive operation. It also provides sufficient avalanche robustness to handle inductive voltage spikes during startup, stall, and normal switching.

The TOLL-8L package supports thermal performance and current handling within the system’s design constraints.

The selected solution meets the electrical and thermal requirements of the application and is being considered for next-generation cordless power tool designs.

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## Additional Resources

Understanding MOSFET selection for power tools can be complex, but we’ve gathered a set of resources to help you navigate key design considerations and make informed decisions

[![Mosfet guide - mcc semi](https://solutions.mccsemi.com/hubfs/Mosfet%20guide%20-%20mcc%20semi.png "Mosfet guide - mcc semi")](https://solutions.mccsemi.com/hubfs/MCC%20semi%20MOSFET%20Selection%20Guide%20for%20Power%20Tools%20and%20BLDC%20Motor%20Drives.pdf?hsLang=en)

## Power Tool MOSFET Guide

Select MOSFETs based on VDS rating, RDS(on), gate charge, and thermal performance for BLDC motor drives and battery systems.

[Download Guide](https://solutions.mccsemi.com/hubfs/MCC%20semi%20MOSFET%20Selection%20Guide%20for%20Power%20Tools%20and%20BLDC%20Motor%20Drives.pdf?hsLang=en)

[![power tools applications - mcc semi - micro commercial components](https://solutions.mccsemi.com/hubfs/power%20tools%20applications%20-%20mcc%20semi%20-%20micro%20commercial%20components.png "power tools applications - mcc semi - micro commercial components")](https://www.mccsemi.com/applications)

## Applications

Used in motor drivers, battery protection, and DC-DC conversion. Designed to handle high current, fast switching, and voltage spikes in power tool systems.

[Explore Applications](https://www.mccsemi.com/applications)

[![Power MOSFETs Catalog - mcc semi - Micro Commercial Components](https://solutions.mccsemi.com/hubfs/Power%20MOSFETs%20Catalog%20-%20mcc%20semi%20-%20Micro%20Commercial%20Components.png "Power MOSFETs Catalog - mcc semi - Micro Commercial Components")](https://www.mccsemi.com/applications/computing--personal-electronics)

## Power MOSFETs Catalog

Browse Power MOSFETs by voltage, RDS(on), and package. Compare key specs to select the right device for power tool and battery applications.

[Search Power MOSFET Catalog](https://www.mccsemi.com/products/mosfets/power-mosfets)

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