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STMicroelectronics STTH102RL — Discrete Semiconductors

STTH102RL Fast Recovery Diode, 200V 1A, 20ns trr, DO-41

MPNSTTH102RL
Active

STMicroelectronics STTH102RL, General Purpose Fast Recovery Diode, 200 V, 1 A, 20 ns Reverse Recovery Time, DO-204AL (DO-41) Axial, Through Hole.

$0.4600Ref. price · indicative, final on quote
STMicroelectronics STTH102RL datasheet (PDF)
PackagingDO-204AL, DO-41, Axial
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH102RL specifications
ParameterValue
MountingThrough Hole
Voltage - DC reverse (Vr)200 V
Voltage - forward (Vf) (Max) @ if970 mV @ 1 A
Current - reverse leakage @ vr1 µA @ 200 V
Current - average rectified1A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR) Cut Tape (CT)
TechnologyStandard
CaseDO-204AL, DO-41, Axial
Reverse recovery time20 ns

Product details

20 ns trr — the recovery-speed decision

The STTH102RL is a general-purpose fast recovery diode from STMicroelectronics, rated 200 V reverse and 1 A average rectified current. Its 20 ns reverse recovery time (trr) places it well inside the Fast Recovery category (≤ 500 ns, > 200 mA), making it a practical choice for 50–60 Hz line-frequency rectification where switching losses from the diode's own recovery are not the dominant concern, but where a standard 1N4007's multi-microsecond trr would create unnecessary ringing and heat in snubber or freewheeling paths.

1 A, 200 V — the power handling envelope

Reverse leakage is 1 µA at 200 V, a low figure that keeps standby losses negligible in offline supplies. The junction temperature rating of 175 °C max gives headroom for derating in enclosed or high-ambient environments.

DO-41 axial — through-hole mounting reality

The DO-204AL (DO-41) axial-lead package is a through-hole form factor that requires manual or wave-solder assembly — no reflow profile applies. Confirm the lead bend radius and stand-off height against your PCB hole pattern; the diode body is not hermetically sealed, so conformal coating is recommended in humid or condensing environments.

Frequently asked questions

What is the reverse recovery time of STTH102RL?

The reverse recovery time (trr) is 20 ns, which qualifies it as a Fast Recovery diode (≤ 500 ns, > 200 mA).

Can STTH102RL replace 1N4007?

The STTH102RL is a faster-switching alternative to the 1N4007 in the same DO-41 package, but it is rated at 200 V and 1 A versus the 1N4007's 1000 V, 1 A. For applications under 200 V where recovery speed matters, it is a direct drop-in; for higher-voltage circuits, a different part is needed.