# MCH3478-TL-H (Component) ## Description N-Channel Power MOSFET – 30 V N-channel enhancement-mode MOSFET optimized for load switching, DC-DC converters, battery-powered devices, power management, motor control, and embedded switching applications. Features a 30 V drain-to-source voltage (VDS), 2 A continuous drain current, and 165 mΩ maximum RDS(on) at VGS = 4.5 V, with 1.8 V logic-level gate drive compatibility for low-voltage microcontroller interfaces. Offers 1.7 nC typical gate charge, 130 pF typical input capacitance, ultra-fast switching performance, and an integrated body diode for efficient power conversion. Rated for ±12 V gate-to-source voltage, 800 mW power dissipation, 150°C maximum junction temperature, and housed in a 3-pin MCPH3 (SC-70 / SOT-323) surface-mount package. This device is obsolete / not recommended for new designs. #onsemi #MCH3478TLH #MCH3478 #NChannelMOSFET #LogicLevelMOSFET #PowerMOSFET #LoadSwitch #DCDCConverter #PowerManagement #MotorDriver #SOT323 #EmbeddedSystems ## Component Details - **Owner:** silicon-yard - **Created:** 7/26/2026 - **Last Updated:** 7/26/2026 - **Visibility:** Public - **Part Type:** Transistor - **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/ca7b976292dbcf70a14930eb3a8b36bbda2ebb74bf5ccf521f817ca629d72d42.pdf - **Manufacturer Part Number:** MCH3478-TL-H - **Manufacturer Name:** ON Semiconductor - **Used in:** 2 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Mouser](https://www.mouser.com/en/ProductDetail/onsemi/MCH3478-TL-H?qs=LDM2r2BBpnarsegl3t9hvg%3D%3D) | N/A | N/A | | [Verical](https://www.verical.com/pd/on-semiconductor-fet---mosfet-MCH3478-TL-H-2556278?utm_currency=USD) | N/A | N/A | - **Part Type:** Transistors - **Sub-Type:** MOSFET - **Manufacturer:** ON Semiconductor - **MPN:** MCH3478-TL-H - **Mount Type:** Surface Mount - **Package / Case Code:** SOT - **Pin Count:** 3 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | ~ | | | 2 | ~ | | | 3 | ~ | | --- *Generated from [https://www.flux.ai/silicon-yard/mch3478-tl-h](https://www.flux.ai/silicon-yard/mch3478-tl-h)*