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STMicroelectronics STTH1212D — Discrete Semiconductors
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STMicroelectronics / Discrete Semiconductors

STTH1212D Fast Recovery Diode, 1.2 kV, 12 A, TO-220AC

MPN STTH1212D
Active Spot Stock · 24-48h Dispatch 100% Original Sealed

STMicroelectronics STTH1212D, standard fast recovery diode, 1.2 kV reverse voltage, 12 A average rectified current, 100 ns reverse recovery time, TO-220AC through-hole package.

In Stock: 1,000 pcs
MOQ: 1 pcs
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$2.95
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$2.66
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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (11)
Package / Case TO-220-2
Speed / Frequency Fast Recovery =< 500ns, > 200mA (Io)

Full Technical Specifications

11 Parameters
STTH1212D specifications
Parameter / AttributeSpecification / Value
Diode typeStandard
MountingThrough Hole
Voltage - DC reverse (Vr)1200 V
Voltage - forward (Vf) (Max) @ if2.2 V @ 12 A
Current - reverse leakage @ vr10 µA @ 1200 V
Current - average rectified12A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-220-2
Reverse recovery time100 ns
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Technical Details & Description

1.2 kV, 12 A fast recovery rectifier in TO-220AC

The STTH1212D is a standard fast recovery diode from STMicroelectronics, rated for 1.2 kV reverse voltage and 12 A average rectified current in a TO-220AC through-hole package. Its 100 ns reverse recovery time (trr) places it in the fast recovery class, making it suitable for switching power supplies and freewheeling circuits where recovery losses matter.

Forward drop and leakage at rated voltage

Reverse leakage is specified at 10 µA at 1.2 kV, which is low for a 1.2 kV device and indicates good high-voltage blocking stability at temperature.

Active production, through-hole assembly

The TO-220AC package is a standard through-hole form factor for power rectifiers — the tab is the cathode, and the mounting hole accepts a #6 screw for heatsink attachment.

Frequently asked questions

What is the reverse recovery time of STTH1212D?

The STTH1212D has a reverse recovery time (trr) of 100 ns, which qualifies as fast recovery (≤ 500 ns at > 200 mA).

STTH1212D
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