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STMicroelectronics STTH3L06B-TR — Discrete Semiconductors

STTH3L06B-TR Fast Recovery Diode, 600V 3A DPAK, 85ns trr

MPNSTTH3L06B-TR
Obsolete

STMicroelectronics STTH3L06B-TR, Standard Fast Recovery Diode, 600 V DC Reverse, 3 A Average Rectified, 85 ns Reverse Recovery Time, 1.3 V Forward Voltage at 3 A, DPAK Surface Mount Package.

STMicroelectronics STTH3L06B-TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STTH3L06B-TR specifications
ParameterValue
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.3 V @ 3 A
Current - reverse leakage @ vr3 µA @ 600 V
Current - average rectified3A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Reverse recovery time85 ns

Product details

Obsolete — the sourcing reality

No last-time-buy window remains open; the available supply is whatever exists in the open market, so confirming authenticity and date-code provenance is the standard practice for this class of discontinued part.

85 ns reverse recovery — why a standard diode won't do

Standard rectifier diodes have trr in the microsecond range and would overheat in a switching converter. The fast recovery characteristic is mandatory.

600 V / 3 A — the power-stage fit

Rated for 600 V DC reverse voltage and 3 A average forward current, this diode fits secondary-side rectification in off-line AC-DC converters. The 1.3 V forward voltage at 3 A sets conduction loss that drives the thermal design around the DPAK package.

DPAK footprint and mounting

The STTH3L06B-TR comes in a TO-252-3 / DPAK surface-mount package, two leads plus the tab. The part ships on Tape & Reel, consistent with automated pick-and-place assembly. No special handling beyond standard MSL precautions applies — the DPAK is a mature, widely used power package.

Frequently asked questions

What is the exact replacement for STTH3L06B-TR?

STMicroelectronics has not published an official successor order code for the STTH3L06B-TR in the available lifecycle records. Because the part is obsolete, the replacement path depends on the specific application requirements: a functionally equivalent 600 V 3 A fast recovery diode in DPAK with 85 ns or faster trr from the same or another manufacturer would be the starting point for a cross-reference search. The STTH3L06B-TR uses a standard DPAK footprint, so pin-compatible alternatives from ON Semiconductor (MUR series) or ST's own STTH3L06 variants in the same package are worth evaluating a

Is STTH3L06B-TR obsolete?

Yes, the STTH3L06B-TR carries an obsolete lifecycle status. No further factory production is planned. Buyers should verify date codes and authenticity when procuring from the open market.

Can STTH3L06B-TR be replaced by a standard diode or must it be fast recovery?

It must be a fast recovery diode. The 85 ns reverse recovery time is the defining characteristic — a standard 50/60 Hz rectifier diode with microsecond-range trr would overheat and fail in any switching converter application this part was designed for. The fast recovery rating of ≤500 ns at >200 mA is the minimum trr class; the actual 85 ns part is well inside that window. Substituting a standard diode is not viable in any circuit running above a few hundred hertz.