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STMicroelectronics STTH802B — Discrete Semiconductors

STTH802B Fast Recovery Diode, 200V 8A 30ns trr DPAK

MPNSTTH802B
Obsolete

STMicroelectronics STTH802B, Fast Recovery Diode, 200 V, 8 A, 30 ns trr, 1.05 Vf @ 8 A, DPAK (TO-252), Surface Mount.

$1.2900Ref. price · indicative, final on quote
STMicroelectronics STTH802B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STTH802B specifications
ParameterValue
MountingSurface Mount
Voltage - DC reverse (Vr)200 V
Voltage - forward (Vf) (Max) @ if1.05 V @ 8 A
Current - reverse leakage @ vr6 µA @ 200 V
Current - average rectified8A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologyStandard
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Reverse recovery time30 ns

Product details

What the 30 ns trr buys you

The STTH802B is a fast-recovery epitaxial diode from STMicroelectronics rated for 200 V reverse voltage and 8 A average forward current. Its 30 ns reverse recovery time (trr) is the spec that makes it useful for continuous-conduction-mode boost PFC stages and high-frequency rectification above 100 kHz — standard 50/60 Hz rectifiers with microsecond trr would overheat in the same spot. Forward voltage is 1.05 V at the full 8 A rating, which keeps conduction losses manageable for a DPAK package. The 6 µA reverse leakage at 200 V is typical for a 175°C junction-rated ultrafast diode.

STMicroelectronics lists the STTH802B as obsolete.

The STTH802B comes in a TO-252-3 DPAK (DPak, 2 leads plus tab, SC-63) — a standard surface-mount package with an exposed tab for thermal management. The tab is the cathode, so the PCB copper pour under the tab carries both the return current and the heat. No alternate package variants are listed.

Frequently asked questions

Where can I buy STTH802B?

The STTH802B is obsolete and sourced through independent distribution. No stock or price figures are published here.

Is STTH802B obsolete?

Yes, STMicroelectronics lists the STTH802B as obsolete. No official replacement order code has been published.

What is the reverse recovery time of STTH802B?

The reverse recovery time (trr) is 30 ns, which qualifies it as a fast-recovery diode suitable for high-frequency switching applications like PFC boost converters.