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STMicroelectronics STTH2R02UY — Discrete Semiconductors

ST STTH2R02UY Fast Recovery Diode, 200 V 2 A, 30 ns trr, SMB

MPNSTTH2R02UY
Active

STMicroelectronics STTH2R02UY, Q Automotive series, Fast Recovery Diode, Standard type, 200 V Vr, 2 A Io, 30 ns trr, 1 Vf @ 2 A, Surface Mount, DO-214AA SMB package, 175°C junction.

$0.1587Ref. price · indicative, final on quote
STMicroelectronics STTH2R02UY datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH2R02UY specifications
ParameterValue
SeriesQ Automotive
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)200 V
Voltage - forward (Vf) (Max) @ if1 V @ 2 A
Current - reverse leakage @ vr3 µA @ 200 V
Current - average rectified2A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseDO-214AA, SMB
Reverse recovery time30 ns

Product details

30 ns trr — what it does for the switching edge

The STTH2R02UY is a 200 V, 2 A fast recovery diode from STMicroelectronics, part of the Q Automotive series. Its 30 ns reverse recovery time (trr) is the defining parameter: it lets the diode snap off quickly when the current reverses, which cuts the turn-off loss in a hard-switched converter and reduces the snubber burden. The forward voltage is 1 V at the rated 2 A, a reasonable trade-off for the recovery speed.

2 A in an SMB — thermal derating matters

At 2 A continuous the junction will climb well above ambient; the board's copper area and airflow determine how much margin remains. The 3 µA reverse leakage at 200 V is low enough not to trouble most designs, but it doubles with temperature — budget for it if the ambient is hot.

Q Automotive — AEC-Q101 qualified

The Q Automotive designation means this part is AEC-Q101 qualified, which is the standard for automotive-grade discrete semiconductors. It is suited for under-hood and chassis-domain applications that require the extended temperature and reliability screening that commercial-grade parts do not carry. The 175°C junction rating supports the high-temperature end of the automotive range.

Listed as Active by STMicroelectronics.

Frequently asked questions

What is the reverse recovery time of STTH2R02UY?

The reverse recovery time (trr) is 30 ns, measured under standard test conditions. This is the fast-recovery spec that defines the diode's switching performance.

Is STTH2R02UY automotive qualified?

Yes, it is part of the Q Automotive series, which means it is AEC-Q101 qualified for automotive applications.

What is the closest pin-compatible alternative to STTH2R02UY in this component family?

The base product number is STTH2, which covers a family of 2 A fast recovery diodes in the SMB package. The STTH2R02 (non-automotive grade) is a functional equivalent but lacks the AEC-Q101 qualification. For a pin-compatible automotive-grade alternative, look at other STTH2x02UY variants with different voltage or speed ratings; the package and pinout are shared across the family.