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STMicroelectronics STTH3R04QRL — Discrete Semiconductors

STTH3R04QRL 400V 3A Fast Recovery Diode, 35 ns trr, DO-15

MPNSTTH3R04QRL
Active

STMicroelectronics STTH3R04QRL, Fast Recovery Diode, 400 V, 3 A, 35 ns trr, 1.5 V Vf @ 3 A, DO-204AC (DO-15) Axial, Through Hole, 175°C Tj, Active, ROHS3.

$0.6200Ref. price · indicative, final on quote
STMicroelectronics STTH3R04QRL datasheet (PDF)
PackagingDO-204AC, DO-15, Axial
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH3R04QRL specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)400 V
Voltage - forward (Vf) (Max) @ if1.5 V @ 3 A
Current - reverse leakage @ vr5 µA @ 400 V
Current - average rectified3A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR) Cut Tape (CT)
TechnologyStandard
CaseDO-204AC, DO-15, Axial
Reverse recovery time35 ns

Product details

35 ns trr — why this diode earns its slot in a 100 kHz PFC stage

The STTH3R04QRL is a 400 V, 3 A fast-recovery rectifier from STMicroelectronics built for continuous-current switching topologies where reverse recovery time dominates turn-off loss.

Forward voltage and the thermal budget at 3 A

At 3 A forward current the maximum forward voltage is 1.5 V, which translates to 4.5 W conduction loss at full load. The DO-15 axial package relies on the lead wires and PCB copper to sink heat; a layout that keeps the anode and cathode pads on wide traces or pours is necessary to keep the junction below 175°C in continuous operation.

STMicroelectronics lists the STTH3R04QRL as an active product with ROHS3 compliance.

Frequently asked questions

What is the reverse recovery time of STTH3R04QRL?

The STTH3R04QRL has a reverse recovery time (trr) of 35 ns at rated conditions, which qualifies it as a fast-recovery diode suitable for switching frequencies up to several hundred kilohertz in continuous-current topologies.