Skip to main content
Log in
STMicroelectronics STTH3L06U — Discrete Semiconductors

STTH3L06U 600V 3A Fast Recovery Diode, SMB, 85 ns trr

MPNSTTH3L06U
Active

STMicroelectronics STTH3L06U, 600 V, 3 A fast recovery rectifier, 85 ns trr, DO-214AA (SMB), surface mount, 175 °C Tj max, ROHS3 compliant.

$0.9400Ref. price · indicative, final on quote
STMicroelectronics STTH3L06U datasheet (PDF)
PackagingDO-214AA, SMB
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH3L06U specifications
ParameterValue
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.3 V @ 3 A
Current - reverse leakage @ vr3 µA @ 600 V
Current - average rectified3A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseDO-214AA, SMB
Reverse recovery time85 ns

Product details

Fast recovery rectifier for PFC and SMPS output stages

The STTH3L06U is a 600 V, 3 A fast recovery rectifier from STMicroelectronics in an SMB surface-mount package. Its 85 ns reverse recovery time (trr) places it in the fast-recovery class — built for continuous-conduction-mode (CCM) boost PFC stages and high-frequency output rectification in switched-mode power supplies, where a standard recovery diode would burn through the switching loss budget.

The 85 ns trr at rated conditions means the diode recovers before the MOSFET in a boost PFC turns back on, minimising the reverse-recovery current spike that otherwise adds EMI and shoot-through stress. Forward voltage is 1.3 V maximum at 3 A — at full rated current the diode dissipates about 3.9 W. In an SMB package that means the PCB must pull heat through the solder joint and into a copper pour; a 1 oz copper pad of at least 300 mm² keeps the junction below 125 °C in still air.

Frequently asked questions

STTH3L06U vs STTH3L06 — what is the difference?

The STTH3L06U is the surface-mount SMB variant of the STTH3L06, which is the through-hole version in an DO-201AD package. The silicon die and all electrical ratings (600 V, 3 A, 85 ns trr) are identical — the only difference is the package and mounting method.