Skip to main content
Log in
STMicroelectronics STTH4R02B — Discrete Semiconductors

STTH4R02B Fast Recovery Diode, 30 ns trr, 200 V, 4 A, DPAK

MPNSTTH4R02B
Obsolete

STMicroelectronics STTH4R02B, Fast Recovery =< 500ns, > 200mA (Io), Diode Type Standard, Surface Mount, TO-252-3, DPAK, 30 ns trr, 200 V, 4 A, 1.05 Vf @ 4 A, 3 µA @ 200 V leakage, 175°C junction.

STMicroelectronics STTH4R02B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STTH4R02B specifications
ParameterValue
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 - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Reverse recovery time30 ns

Product details

Diode selection note: STTH4R02B

The STMicroelectronics STTH4R02B is a standard fast-recovery rectifier diode in the DPAK surface-mount package, designed for applications requiring a reverse recovery time of 30 ns at 200 V and 4 A average rectified current. With a maximum forward voltage of 1.05 V at 4 A and a reverse leakage of 3 µA at 200 V, it suits high-efficiency rectification in switch-mode power supplies, freewheeling diodes, and snubber circuits where fast turn-off reduces switching losses.

The 30 ns reverse recovery time categorises this as a fast-recovery diode, meaning it can switch off quickly after forward conduction.

Obsolete — sourcing this line item

The base product number STTH4R02 may have a currently-manufactured variant, but the STTH4R02B suffix is discontinued. Sourcing is through the independent distribution channel, where we locate new-old-stock or surplus inventory against an RFQ.

Frequently asked questions

Where can I buy STTH4R02B?

STTH4R02B is obsolete and not available from the original manufacturer. We source it through independent distribution against an RFQ. Submit a request for current availability and pricing; each order is quoted individually.

What are the specifications of STTH4R02B?

STTH4R02B is a standard fast-recovery rectifier: 200 V reverse voltage, 4 A average forward current, 30 ns reverse recovery time, 1.05 V forward drop at 4 A, 3 µA leakage at 200 V, 175°C maximum junction temperature. Package is DPAK (TO-252-3).

What is the replacement for STTH4R02B?

No direct official successor is listed. The base part number STTH4R02 may have active variants; check STMicroelectronics' current portfolio for a fast-recovery 200 V, 4 A diode in DPAK. For an exact drop-in, we can search available stock against your required quantity.