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STMicroelectronics STTH15S12W — Discrete Semiconductors

STTH15S12W Fast Recovery Diode, 1200 V, 15 A, DO-247

MPNSTTH15S12W
Obsolete

STMicroelectronics STTH15S12W fast recovery diode, 1200 V, 15 A, 40 ns trr, DO-247 through-hole package.

$2.7400Ref. price · indicative, final on quote
STMicroelectronics STTH15S12W datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STTH15S12W specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)1200 V
Voltage - forward (Vf) (Max) @ if3.1 V @ 15 A
Current - reverse leakage @ vr10 µA @ 1200 V
Current - average rectified15A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologyStandard
CaseDO-247-2 (Straight Leads)
Reverse recovery time40 ns

Product details

1200 V, 15 A fast recovery diode in DO-247

The STTH15S12W is a 1200 V, 15 A fast recovery diode from STMicroelectronics in a DO-247 through-hole package. Its 40 ns reverse recovery time qualifies it for high-frequency switching in PFC boost stages, output rectification, and snubber circuits where recovery losses drive thermal design.

40 ns trr — switching loss in the high-voltage rail

The 40 ns reverse recovery time is the headline switching spec. Forward voltage is 3.1 V at 15 A.

STMicroelectronics lists the STTH15S12W as obsolete.

Frequently asked questions

Is STTH15S12W obsolete?

Buyers need to know if the part is still in production or must find a replacement.

What is the replacement for STTH15S12W?

Engineering and sourcing require an exact or functional substitute to keep designs active.

What are the exact specifications of STTH15S12W?

Designers and technicians verify voltage, current, speed, and package fit before integration.

Where can I buy STTH15S12W in stock?

Sourcing buyers need stock availability to fill BOM lines or urgent replacements.

What is the price of STTH15S12W?

Budget planning and cost comparison depend on current market pricing.

Does STTH15S12W have a cross-reference or equivalent part?

Cross-reference simplifies substitution when the original is unavailable or end-of-life.