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STMicroelectronics STTH4R02BY-TR — Discrete Semiconductors

STTH4R02BY-TR Automotive Fast Recovery Diode, 30 ns trr, 4 A

MPNSTTH4R02BY-TR
Active

STMicroelectronics STTH4R02BY-TR, Automotive AEC-Q101 Fast Recovery Diode, Standard, 200 V, 4 A, 30 ns trr, 1.05 Vf @ 4 A, Surface Mount DPAK (TO-252-3), -40°C to 175°C junction.

$0.9400Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH4R02BY-TR specifications
ParameterValue
SeriesAutomotive, AEC-Q101
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)200 V
Voltage - forward (Vf) (Max) @ if1.05 V @ 4 A
Current - reverse leakage @ vr3 µA @ 200 V
Current - average rectified4A
Operating temperature - junction-40°C~175°C
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Reverse recovery time30 ns

Product details

That 30 ns trr places it in the ultrafast class for a 200 V, 4 A part — the recovery charge is low enough to keep switching losses manageable in a 100–200 kHz PFC or DC-DC converter. The 1.05 V forward drop at 4 A is a reasonable trade-off for the speed; a slower diode would drop less but ring longer.

AEC-Q101 and the 175°C junction — under-hood ready

That combination is the baseline for automotive under-hood and transmission-mounted rectifier stages — the 175°C Tj max gives headroom for the hot soak conditions a standard 150°C part would derate into. The DPAK (TO-252-3) surface-mount package suits automated assembly on an IMS or FR4 board with a thermal pad pour.

Frequently asked questions

Is STTH4R02BY-TR automotive qualified (AEC-Q101)?

Yes, the STTH4R02BY-TR is listed under the Automotive, AEC-Q101 series, confirming qualification to the AEC-Q101 stress test standard for discrete semiconductors used in automotive applications.

Is STTH4R02BY-TR obsolete or active?

The product status is Active. No discontinuation notice is in effect.

What package is STTH4R02BY-TR available in?

It is supplied in a surface-mount DPAK (TO-252-3) package, also designated as SC-63, with 2 leads plus a tab.