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STMicroelectronics STTH2L06U — Discrete Semiconductors

STTH2L06U Fast Recovery Diode, 600 V, 2 A, 85 ns trr, SMB

MPNSTTH2L06U
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STMicroelectronics STTH2L06U standard fast recovery diode, 600 V reverse, 2 A average rectified, 85 ns trr, surface mount DO-214AA SMB package.

$0.7700Ref. price · indicative, final on quote
STMicroelectronics STTH2L06U datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH2L06U specifications
ParameterValue
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.3 V @ 2 A
Current - reverse leakage @ vr2 µA @ 600 V
Current - average rectified2A
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 diode for PFC and SMPS output rectification

Its 85 ns reverse recovery time places it squarely in the class used for continuous-conduction-mode PFC boost stages and secondary-side rectification in 100–200 W switched-mode power supplies.

An 85 ns trr at 2 A forward current and 600 V blocking gives this diode a recovery charge low enough to keep switching losses manageable in a 70–100 kHz PFC stage. At turn-off the stored charge clears quickly, so the MOSFET or IGBT in the same leg sees less current overshoot and lower EMI. The 1.3 V forward drop at 2 A is typical for a 600 V fast-epitaxial die — the trade-off is conduction loss against switching speed.

Package and footprint — DO-214AA SMB

The SMB (DO-214AA) package is a common surface-mount outline for 2 A-class diodes. The cathode is the tab side — the PCB copper pad under the tab should be sized for thermal dissipation. Standard SMB footprint with a 12×12 mm cathode pad is a reasonable starting point.

Frequently asked questions

What is STTH2L06U's reverse recovery time?

The STTH2L06U has a reverse recovery time (trr) of 85 ns, measured at standard test conditions for a fast recovery diode. This trr is suitable for continuous-conduction-mode PFC and flyback converters switching in the 70–100 kHz range.

Can STTH2L06U be used in high frequency applications?

With an 85 ns trr, the STTH2L06U is suited for switching frequencies up to about 100 kHz in typical PFC and flyback topologies. Above that frequency, a hyperfast or SiC diode with a trr below 30 ns would be a better fit to keep switching losses under control.