Skip to main content
Log in
STMicroelectronics STTH3L06UFY — Discrete Semiconductors

STTH3L06UFY STMicroelectronics Diode, 600V 3A, SMBflat

MPNSTTH3L06UFY
Active

STMicroelectronics STTH3L06UFY, Automotive AEC-Q101, Standard Fast Recovery Diode, 600 V, 3 A, 70 ns trr, SMBflat DO-221AA, Surface Mount.

$0.6200Ref. price · indicative, final on quote
STMicroelectronics STTH3L06UFY datasheet (PDF)
PackagingDO-221AA, SMB Flat Leads
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q101, ECOPACK®2
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH3L06UFY specifications
ParameterValue
SeriesAutomotive, AEC-Q101, ECOPACK®2
Diode typeStandard
MountingSurface Mount
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.4 V @ 3 A
Current - reverse leakage @ vr3 µA @ 600 V
Current - average rectified3A
Operating temperature - junction-40°C~175°C
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseDO-221AA, SMB Flat Leads
Reverse recovery time70 ns

Product details

600 V, 3 A fast recovery for automotive power stages

The STTH3L06UFY is a 600 V, 3 A standard fast recovery diode in the SMBflat (DO-221AA) surface-mount package, part of STMicroelectronics' automotive-grade STTH series qualified to AEC-Q101. It is designed for continuous conduction and hard-switching rectification in DC-DC converters, flyback clamp circuits, and freewheeling paths where reverse recovery speed directly impacts switching loss.

70 ns trr and forward drop at rated load

Reverse leakage is specified at 3 µA maximum at 600 V reverse bias — a low figure that confirms the planar junction process holds its blocking voltage without significant leakage-induced thermal runaway at high ambient temperatures.

Automotive temperature grade and package fit

The SMBflat package (DO-221AA) is a low-profile, flat-lead variant of the standard SMB — the lead bend is flush with the package body, which reduces the mounted height and improves solder-joint inspection access compared to a gull-wing SMB. The ECOPACK®2 designation confirms the molding compound is halogen-free and antimony-free per the STMicroelectronics green-packaging standard.

Frequently asked questions

What is STTH3L06UFY's reverse recovery time?

The reverse recovery time (trr) is 70 ns, which qualifies it as a fast recovery diode per the standard definition (≤ 500 ns at > 200 mA). This speed suits hard-switched rectifier and freewheeling applications in automotive DC-DC converters operating up to several hundred kilohertz.

Will STTH3L06UFY drop into a board specified around STTH1R06UFY?

Both parts share the same SMBflat (DO-221AA) package and 600 V reverse voltage rating, so the footprint is identical. The key difference is current rating: the STTH3L06UFY is rated for 3 A average rectified current versus 1 A for the STTH1R06UFY. If the board's trace width and thermal pad are sized for 1 A, the 3 A part will run cooler at the same load but the extra copper may not be needed. The 70 ns trr of the STTH3L06UFY is slightly slower than the 45 ns trr of the STTH1R06UFY, so verify the switching-loss budget at the operating frequency before substituting.