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STMicroelectronics STTH31AC06SPF — Discrete Semiconductors

STTH31AC06SPF Fast Recovery Diode, 600V 30A TO-3PF, 65ns trr

MPNSTTH31AC06SPF
Active

STMicroelectronics STTH31AC06SPF, Fast Recovery =< 500ns, > 200mA (Io), Standard Diode, 600V 30A, 65ns trr, TO-3P-3 Full Pack, Through Hole, Tube.

$2.7900Ref. price · indicative, final on quote
STMicroelectronics STTH31AC06SPF datasheet (PDF)
PackagingTO-3P-3 Full Pack
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH31AC06SPF specifications
ParameterValue
Diode typeStandard
MountingThrough Hole
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if2 V @ 30 A
Current - reverse leakage @ vr10 µA @ 600 V
Current - average rectified30A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-3P-3 Full Pack
Reverse recovery time65 ns

Product details

Fast recovery at 65 ns — what it buys the switching stage

The STTH31AC06SPF is a 600 V, 30 A general-purpose fast recovery diode from STMicroelectronics, housed in the fully isolated TO-3P-3 Full Pack (TO-3PF) package. Its 65 ns reverse recovery time (trr) is the headline switching parameter — fast enough to keep turn-off losses low in continuous-conduction-mode PFC boost stages and output rectification in hard-switched converters up to the 100 kHz range, without the higher Vf penalty of an ultrafast or SiC diode.

Ratings that set the operating envelope

Averaged rectified current of 30 A and a 600 V reverse voltage ceiling define the continuous-load boundary. Reverse leakage is specified at 10 µA at 600 V — a clean blocking characteristic that keeps standby dissipation negligible in offline supplies.

Frequently asked questions

What is the reverse recovery time of STTH31AC06SPF?

The STTH31AC06SPF has a reverse recovery time (trr) of 65 ns. That places it in the fast-recovery category — fast enough for most hard-switched PFC and flyback designs without the cost premium of an ultrafast diode.

Is STTH31AC06SPF obsolete or end-of-life?

No.

Is STTH31AC06SPF a direct replacement for STTH30R06?

Both are 600 V, 30 A fast recovery diodes from ST in similar TO-3PF packages, but the STTH31AC06SPF has a 65 ns trr versus the STTH30R06's 45 ns typical. The slower trr means higher turn-off losses — check the switching loss budget before substituting. Pin-compatibility should be verified against the specific package drawing, as the lead form can differ between the two base numbers.