--- title: MCC’s 1W ZENER SMAF Series Diodes in Advanced DO-221AC (SMA-FL) Package description: MCC’s 6.2V to 100V ZENER SMAF Series, the first Zener diodes available in the compact DO-221AC (SMA-FL) package for reliable performance in small designs. image: https://solutions.mccsemi.com/hubfs/MCC%E2%80%99s%201W%20ZENER%20SMAF%20Series%20Diodes%20in%20Advanced%20DO-221AC%20%28SMA-FL%29%20Package%20-%20mcc%20semi%20-%20micro%20commercial%20components%201080x400.png --- ###### Utility Navigation - [![](https://www.mccsemi.com/images/shopping-cart.svg) 0](https://cart.mccsemi.com/cart) - [Login / Sign Up](https://www.mccsemi.com/Identity/Account/Login) - [Terms of Sale and Export](https://www.mccsemi.com/Home/TermsAndConditions) - [中文](https://www.mccsemi.com/Home/SetLanguage?returnUrl=%2FContact) [![MCC logo](https://www.mccsemi.com/images/mcc_logo_crop.png) ![MCC logo](https://www.mccsemi.com/images/Logo.svg)](https://www.mccsemi.com/) ###### Main Navigation - [Products](https://www.mccsemi.com/ProductCategories) #### Products MCC produces high-quality discrete semiconductors to the consumer and industrial markets—including diodes, rectifiers, MOSFETs, voltage regulators and protection devices. 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Sign up and never miss an update. # MCC’s 1W ZENER SMAF Series Diodes in Advanced DO-221AC (SMA-FL) Package # MCC’s 1W ZENER SMAF Series Diodes in Advanced DO-221AC (SMA-FL) Package ![MCC](https://solutions.mccsemi.com/hs-fs/hubfs/mcc%20150x150%20(1).png?width=50&height=50&name=mcc%20150x150%20(1).png) by [MCC](https://solutions.mccsemi.com/news/author/mcc) January 14, 2025 ## Compact Design Meets Exceptional Performance Amid Height Constraints MCC Semi is thrilled to introduce our ZENER SMAF Series, a robust collection of diodes designed to address the common challenge of integrating components in space-constrained environments. Our 1W Zener diodes are housed in a sleek, low-profile DO-221AC (SMA-FL) package for enhanced versatility. Compared to the standard SMA package footprint, these new components provide a 50% reduction in height without skimping on performance or reliability. A wide voltage selection ranging from 6.2V to 100V ensures these products are well-suited for diverse consumer, industrial, and telecommunications applications. High-temperature resilience in demanding environments is assured, thanks to our diodes’ ability to withstand operating junction temperatures up to 150°C. Level up from the familiar SMA footprint with MCC’s compact yet superior ZENER SMAF Series in the SMA-FL package. ![SMAF4735A\_DO\_221AC\_Zener\_Diodes\_Diodes\_MCC](https://solutions.mccsemi.com/hs-fs/hubfs/SMAF4735A_DO_221AC_Zener_Diodes_Diodes_MCC.png?width=1200&height=1200&name=SMAF4735A_DO_221AC_Zener_Diodes_Diodes_MCC.png) [Low-profile DO-221AC (SMA-FL) package](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4735A) ##### Features & Benefits: - **Compact Design:** Ideal for space-constrained applications, the low-profile DO-221AC (SMA-FL) package reduces height by 50% compared to standard SMA packages. - **Wide Voltage Range:** Caters to a broad spectrum of applications thanks to voltage options from 6.2V to 100V. - **High-Temperature Resilience:** Capable of performing at junction temperatures up to 150°C, these diodes ensure stable operation in demanding environments. - **Reliable in Diverse Applications:** These diodes are designed to deliver consistent performance across various sectors, including consumer electronics, industrial, and telecommunications. [Download Flyer](https://solutions.mccsemi.com/hubfs/MCC%E2%80%99s%201W%20ZENER%20SMAF%20Series%20Diodes%20in%20Advanced%20DO-221AC%20(SMA-FL)%20Package%20-%20mcc%20semi.%20-%20micro%20commercial%20components.pdf) ## Product Highlights Our Zener diodes series boasts vast selection and reliable performance for space-constrained and challenging environments, making them optimal for diverse applications. Low-Profile & High-Performance: 1W, 6.2V-100V ZENER SMAF Series ### 1 ###### Designed for Space Efficiency With a low-profile DO-221AC (SMA-FL) package, MCC’s ZENER SMAF Series allows for more compact and streamlined electronic device designs, even with limited vertical space. Low-Profile & High-Performance: 1W, 6.2V-100V ZENER SMAF Series ### 2 ###### Versatile Voltage Options Our wide range of voltages from 6.2V to 100V provides flexibility, assuring these diodes an intelligent solution for many applications — from simple voltage regulation to complex circuit protection. Low-Profile & High-Performance: 1W, 6.2V-100V ZENER SMAF Series ### 3 ###### High-Temperature Resilience Capable of operating at junction temperatures up to 150°C, our ZENER SMAF Series provides reliable performance in high-temperature environments to prevent thermal-related failures. Low-Profile & High-Performance: 1W, 6.2V-100V ZENER SMAF Series ### 4 ###### Supplementary Device Protection These advanced Zener diodes also feature overvoltage protection capabilities to safeguard sensitive components from voltage spikes while enhancing longevity. ## Applications  MCC’s compact ZENER SMAF Series diodes deliver seamless integration for designs across multiple industries and applications: | ![voltage regulator electronics system - mcc semi - micro commercial components 500x300](https://solutions.mccsemi.com/hs-fs/hubfs/voltage%20regulator%20electronics%20system%20-%20mcc%20semi%20-%20micro%20commercial%20components%20500x300.png?width=348&height=209&name=voltage%20regulator%20electronics%20system%20-%20mcc%20semi%20-%20micro%20commercial%20components%20500x300.png) | ![industrial automation - mcc semi - micro commercial components 500x300](https://solutions.mccsemi.com/hs-fs/hubfs/industrial%20automation%20-%20mcc%20semi%20-%20micro%20commercial%20components%20500x300.png?width=348&height=209&name=industrial%20automation%20-%20mcc%20semi%20-%20micro%20commercial%20components%20500x300.png) | ![telecommunication applications - mcc semi - micro commercial 500x300](https://solutions.mccsemi.com/hs-fs/hubfs/telecommunication%20applications%20-%20mcc%20semi%20-%20micro%20commercial%20500x300.png?width=354&height=212&name=telecommunication%20applications%20-%20mcc%20semi%20-%20micro%20commercial%20500x300.png) | | --- | --- | --- | | Consumer Electronics | Industrial | Telecommunications | | - Voltage regulation in electronics systems - Protection circuits in electronics systems | - Power supply regulation in control systems - Surge protection in industrial automation equipment | - Signal integrity maintenance in networking equipment - Voltage stabilization in communication devices |   ## Product Attributes, Parametrics & Datasheets | Product | Type | Package | DC Power Dissipation PD | Drain-NominalZener VoltageVZ@IZT | Mounting Type | Datasheet | | --- | --- | --- | --- | --- | --- | --- | | [SMAF4735A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4735A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 6.2V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4736A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4736A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 6.8V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4737A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4737A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 7.5V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4738A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4738A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 8.2V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4739A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4739A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 9.1V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4740A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4740A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 10V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4741A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4741A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 11V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4742A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4742A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 12V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4743A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4743A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 13V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4744A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4744A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 15V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4745A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4745A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 16V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4746A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4746A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 18V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4747A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4747A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 20V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4748A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4748A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 22V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4749A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4749A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 24V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4750A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4750A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 27V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4751A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4751A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 30V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4752A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4752A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 33V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4753A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4753A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 36V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4754A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4754A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 39V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4755A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4755A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 43V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4756A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4756A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 47V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4757A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4757A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 51V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4758A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4758A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 56V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4759A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4759A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 62V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4760A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4760A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 68V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4761A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4761A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 75V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4762A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4762A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 82V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4763A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4763A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 91V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | | [SMAF4764A](https://www.mccsemi.com/products/diodes/zener-diodes/SMAF4764A) | Zener Diode | DO-221AC (SMA-FL) | 1W | 100V | Surface-Mount (SMD) | [Info](https://www.mccsemi.com/pdf/products/SMAF4735A_SMAF4764A(DO-221AC).pdf) | ###### Use the [MCC chatbot](https://solutions.mccsemi.com/news/mccs-1w-zener-smaf-series-diodes-in-advanced-do-221ac-sma-fl-package#hs-chat-open) to quickly request a sample or ask a question. ###### Tags: [New Product Introductions,](https://solutions.mccsemi.com/news/tag/new-product-introductions) [News,](https://solutions.mccsemi.com/news/tag/news) [Diodes](https://solutions.mccsemi.com/news/tag/diodes) #### Related Content [![](https://solutions.mccsemi.com/hubfs/MCC%E2%80%99s%20BZX584C%20Series%20Robust%20%26%20Versatile%20300mW%20Zener%20Diodes%20%20-%20mcc%20semi%20-%20micro%20commercial%20components%201080x400.png)](https://solutions.mccsemi.com/news/mccs-bzx584c-series-robust-versatile-200mw-zener-diodes) April 4, 2025 #### [MCC’s BZX584C Series: Robust & Versatile 200mW Zener 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![MCC](https://solutions.mccsemi.com/hs-fs/hubfs/mcc%20150x150%20(1).png?width=50&height=50&name=mcc%20150x150%20(1).png) Post by [MCC](https://solutions.mccsemi.com/news/author/mcc) January 14, 2025 MCC is a leading integrated device manufacturer (IDM) of discrete semiconductors worldwide. Headquartered in the US, we deliver supply chain assurance, best-in-class support, and a diverse portfolio of 10,000+ advanced components to help customers innovate in automotive, industrial, and beyond. #### Global Headquarters 130 W Cochran St, Unit B Simi Valley, CA. 93065 [818.701.4933](tel:%20818.701.4933) --- #### Company - [Company Profile](https://www.mccsemi.com/Home/CompanyProfile) - [Products](https://www.mccsemi.com/ProductCategories) - [Catalogs](https://www.mccsemi.com/Home/Catalogs) - [Contact Us](https://www.mccsemi.com/Contact) - [Careers](https://www.mccsemi.com/careers) --- #### Explore - [Events](https://www.mccsemi.com/events) - [Quality](https://www.mccsemi.com/Quality/Index) - [Blog](https://solutions.mccsemi.com/news/tag/blog) - [News](https://solutions.mccsemi.com/news-events) - [History](https://solutions.mccsemi.com/history) - [Knowledge Center](https://solutions.mccsemi.com/knowledge-center) --- #### Distributors & Customers - [Log In](https://www.mccsemi.com/Account/Login) ![icon](https://www.mccsemi.com/images/ECIAmember-mcc.png)                 [Complete Discrete Semiconductor Solutions ![](https://www.mccsemi.com/images/sinewave_wht.svg) Powered by Service](https://solutions.mccsemi.com/) [Terms of Sale and Export](https://www.mccsemi.com/Home/TermsAndConditions)   [Privacy Policy](https://www.mccsemi.com/Home/PrivacyPolicy) [Version : 1.0](https://www.mccsemi.com/Version) MCC is a manufacturer of high-quality discrete semiconductors to the consumer markets © MCC. All Rights Reserved · 2026 ```json { "@context": "http:\/\/schema.org\/", "datePublished": "2025-01-14T7:29:19 PM", "dateModified": "2025-04-14T2:16:05 PM", "headline": "MCC’s 1W ZENER SMAF Series Diodes in Advanced DO-221AC (SMA-FL) Package", "description": "MCC’s 6.2V to 100V ZENER SMAF Series, the first Zener diodes available in the compact DO-221AC (SMA-FL) package for reliable performance in small designs. 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