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STMicroelectronics FERD30M45CT
STMicroelectronics

STMicro FERD30M45CT FERD Diode Array, 45V 15A TO-220

MPNFERD30M45CT
End of Life

STMicroelectronics FERD30M45CT, Field Effect Rectifier Diode array, 45V Vr, 15A average rectified per diode, 470mV Vf at 15A, Fast Recovery ≤500ns, TO-220-3, Through Hole, Active.

$1.59Ref. price · indicative, final on quote
FERD30M45CT datasheet
PackagingTO-220-3
StockContact for availability
MOQ1 pcs
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Specifications

FERD30M45CT Technical Specifications
ParameterValue
Diode typeFERD (Field Effect Rectifier Diode)
Mounting typeThrough Hole
Voltage - DC reverse (Vr)45 V
Voltage - forward (Vf) (Max) @ if470 mV @ 15 A
Current - reverse leakage @ vr600 µA @ 45 V
Current - average rectified (Io) (per diode)15A
Operating temperature - junction175°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-220-3
Diode configuration1 Pair Common Cathode

Product details

470 mV forward drop — the efficiency number that matters

The STMicroelectronics FERD30M45CT is a dual common-cathode Field Effect Rectifier Diode (FERD) array in a TO-220-3 through-hole package. Each diode is rated for 15 A average rectified current with a maximum forward voltage of 470 mV at that current — this is the conduction loss floor for the rectifier stage. The 45 V reverse voltage rating and 600 µA reverse leakage at 45 V define the standby loss ceiling, making the part a fit for output rectification in 12 V and 24 V bus converters where every millivolt of drop eats into efficiency.

175°C junction — thermal headroom for enclosed supplies

Rated for a maximum junction temperature of 175°C, the FERD30M45CT can run in high-ambient enclosures — think power supplies, motor drives, or industrial SMPS — without derating the 15 A per diode. The fast recovery classification (≤500 ns at >200 mA) keeps switching losses manageable in the 50–100 kHz range, so the part pulls double duty as both a line-frequency rectifier and a high-efficiency output diode.

Sourced through standard distribution — quoted to order against the BOM quantity.

Frequently asked questions

What is the difference between FERD and Schottky diode?

A FERD (Field Effect Rectifier Diode) uses a MOS-channel structure to achieve a forward voltage drop comparable to a Schottky — 470 mV at 15 A here — but with a much lower reverse leakage at high temperature. Where a Schottky's leakage climbs sharply above 100°C, the FERD maintains a tighter leakage profile, making it a better fit for high-temperature rectifier stages where standby loss matters.

Can I use FERD30M45CT as a replacement for STPS30L45CT?

Both are dual common-cathode 45 V, 15 A per diode rectifiers in TO-220, so the pinout and basic ratings align. The FERD30M45CT uses FERD technology versus the STPS30L45CT's Schottky barrier — the key trade-off is leakage versus switching speed. If the original design relied on the Schottky's lower capacitance at high frequency, bench-verify the recovery behaviour. For 50–100 kHz SMPS output stages the FERD is a functional cross, but confirm the thermal and switching margins in your specific circuit.