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STMicroelectronics FERD15S50SB-TR

ST FERD15S50SB-TR FERD Diode, 50V 15A DPAK, 490mV Vf

MPNFERD15S50SB-TR
End of Life

ST FERD15S50SB-TR, FERD (Field Effect Rectifier Diode), 50 V reverse, 15 A average rectified, 490 mV forward voltage at 15 A, fast recovery ≤500 ns, DPAK surface mount, ROHS3 compliant, active.

$0.87Ref. price · indicative, final on quote
STMicroelectronics FERD15S50SB-TR datasheet (PDF)
PackagingTO-252-3, DPak (2 Leads + Tab), SC-63
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

FERD15S50SB-TR specifications
ParameterValue
MountingSurface Mount
Voltage - DC reverse (Vr)50 V
Voltage - forward (Vf) (Max) @ if490 mV @ 15 A
Current - reverse leakage @ vr650 µA @ 50 V
Current - average rectified15A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyFERD (Field Effect Rectifier Diode)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63

Product details

The STMicroelectronics FERD15S50SB-TR is a 50 V, 15 A Field Effect Rectifier Diode (FERD) in a DPAK surface-mount package. It delivers a forward voltage of 490 mV at the full 15 A rated current.

Fast recovery — ≤500 ns

The ≤500 ns recovery time places this diode in the fast-recovery class. That is adequate for line-frequency rectification and low-frequency switching stages.

Package and mounting — DPAK (TO-252)

The DPAK (TO-252-3) footprint is a standard power package for automated assembly. The tab is the anode (common with pin 2), so the PCB copper pour under the tab carries the output current. The 2-lead-plus-tab layout is identical to the industry-standard DPAK outline — no footprint surprise when swapping in from another DPAK rectifier. Tape & Reel or Cut Tape ordering options match different volume needs.

Frequently asked questions

Can FERD15S50SB-TR be used as a freewheeling diode?

Yes. With a 50 V reverse rating, 15 A average current, and ≤500 ns recovery, it works as a freewheeling diode across relays, solenoids, and low-frequency motor drives. For high-frequency PWM (above a few kHz), a faster recovery diode would be more appropriate to minimize switching losses.

Is FERD15S50SB-TR a Schottky diode?

No. It is a FERD (Field Effect Rectifier Diode), which uses a different junction structure. FERD technology achieves a forward voltage as low as a Schottky at high current but with softer reverse recovery and lower leakage at elevated temperature — a practical advantage in output rectification where the Schottky's leakage would be a concern.