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SSM3H137TU,LF is listed in the Single FETs, MOSFETs range at ChipApex. The manufacturer field lists Toshiba Semiconductor and Storage. Its product description is MOSFET N-CH 34V 2A UFM. Review the specifications below when checking this part for your BOM.
The SSM3H137TU,LF is a single N-channel MOSFET with an integrated active clamp Zener diode, designed for relay driver applications. It features a drain-source voltage rating of 34 V and a continuous drain current of 2 A at ambient temperature. The device dissipates up to 800 mW (Ta) and utilizes the UFM-3 surface mount package. Key electrical parameters include a maximum on-resistance of 0.24 Ω at 10 V gate drive and a forward transconductance minimum of 2.2 S.
Verify the specific suffix LF for lead-free compliance and TU for tape-and-reel packaging configuration. Confirm the UFM-3 package designation matches your PCB footprint requirements. Ensure the active clamp Zener integration aligns with your circuit protection strategy without external components. Cross-reference the manufacturer part number TA75S393 or similar series only if verifying family compatibility, not direct substitution.
Select this component when a compact solution for relay driving is required that combines power switching and transient suppression. The 34 V rating suits 12 V nominal systems with surge margins. The 2 A current capability supports standard automotive and industrial relays. Consider the UFM-3 package size constraints during layout planning.
This device belongs to Toshiba's discrete MOSFET portfolio, specifically engineered for high-density power switching. It leverages U-MOSIV technology to achieve low conduction losses. The integration of the clamp diode distinguishes it from standard discrete MOSFETs, simplifying bill-of-materials for inductive loads.
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and thermal resistance if considering alternative manufacturers' N-channel MOSFETs with integrated clamps.
It suppresses voltage spikes generated by inductive loads, such as relays, eliminating the need for an external flyback diode.
The maximum drain-source voltage (Vdss) is rated at 34 V.
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