STTH506B-TR

STMicroelectronics

STMicroelectronics STTH506B-TR, 600 V, 5 A Ultrafast Diode, 50 ns trr, 1.85 Vf @ 5 A, DPAK (TO-252), Surface Mount, ROHS3.

STMicroelectronics STTH506B-TR
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MOQ 5 · Tape & Reel (TR) Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

STTH506B-TR specifications
Parameter / AttributeSpecification / Value
MountingSurface Mount
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.85 V @ 5 A
Current - reverse leakage @ vr5 µA @ 600 V
Current - average rectified5A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR) Cut Tape (CT)
TechnologyStandard
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Reverse recovery time50 ns

Technical details

600 V, 5 A ultrafast rectifier in DPAK

Its 50 ns reverse recovery time places it in the fast-recovery class for hard-switching topologies like PFC boost stages, flyback clamps, and output rectification in telecom and industrial power supplies.

Switching loss and thermal budget

The 50 ns trr at 600 V reverse voltage is the controlling parameter for turn-off losses in continuous-conduction-mode PFC. At a 100 kHz switching frequency, each turn-off event dissipates roughly Vr × Ir × trr/2 — the 50 ns window keeps the loss per cycle under 75 µJ at rated current, which means the DPAK copper pad on a standard 1 oz pour can handle the thermal load without forced air. Forward voltage is 1.85 V max at 5 A and 25 °C junction. Conduction loss at full rated current is 9.25 W, but the actual junction temperature will settle higher — the 175 °C max junction rating gives headroom for the Vf positive temperature coefficient to balance the thermal loop.

Reverse leakage at high line

Reverse leakage is 5 µA at 600 V, 25 °C. Leakage doubles roughly every 10 °C junction rise, so at 125 °C expect about 80 µA — still negligible for most 5 A designs, but worth checking if the diode sits across a high-impedance node in a no-load standby rail.

Active production, no LTB shadow

ROHS3 compliant, so it clears EU and lead-free assembly requirements without a waiver.

STTH506B-TR
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