Is there a pin-compatible replacement for STPS20S100CT?

Several parts like MBR30200CT share the TO-220AB package and common cathode configuration, making them likely pin-compatible. However, you must verify the pinout (e.g., Pin 1: Anode, Pin 2: Cathode, Pin 3: Anode) from the datasheet before soldering.

What risks should I check before replacing STPS20S100CT?

First, confirm the pinout is identical. Second, check the forward voltage (Vf) of the replacement; a different Vf could alter power dissipation and efficiency. Finally, ensure the replacement's voltage and current ratings meet or exceed the original's 100V and 10A per diode.

STPS20S100CT Alternatives, Datasheet & Cross Reference | STMicroelectronics

STPS20S100CT is a 100V, 20A common cathode Schottky rectifier in a TO-220AB package. Finding a substitute involves matching the package and pinout, while ensuring voltage and current ratings are equal or better.

AI replacement insight

Package risklow

TO-220AB is a standard package, ensuring mechanical fit.

Electrical risklow

Upgraded candidates reduce electrical stress. Check Vf for thermal changes.

Sourcing riskmedium

Availability of specific alternatives may vary by region and distributor.

Can it be replaced directly?

While no drop-in replacement is confirmed without pinout verification, parts like MBR30200CT offer matching form and upgraded electricals, making them strong candidates for evaluation.

Best replacement path

Upgrade to a 200V part like MBR30200CT or MBR40200CT for improved voltage robustness and higher current handling.

Main risk

The primary risk is pinout incompatibility. Although the TO-220AB package is standard, pin functions (Anode1, Cathode, Anode2) must be verified from datasheets before use.

Recommended alternatives

Upgrade with 200V/30A ratings in the same TO-220AB package. Pinout verification is required.

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Alternative comparison matrix

Feature / factor	STPS20S100CT	MBR30200CT	MBR40200CT	MBR30100CT	Compatibility / risk
Package	TO-220AB	TO-220AB	TO-220AB	TO-220AB	TO-220AB — Package matches target.; MBR40200CT: Package matches target.; MBR30100CT: Package matches target.
Pinout	3	3	-	-	3 — Pin count matches. Pin functions (A-C-A) must be verified from datasheet.
Voltage	100V	200V	200V	100V	200V / 100V — Higher voltage rating provides more design margin.; MBR40200CT: Higher voltage rating provides significant margin.; MBR30100CT: Voltage rating matches but lacks recommended engineering margin.
Current	20A (10A/diode)	30A (15A/diode)	40A (20A/diode)	30A (15A/diode)	30A (15A/diode) / 40A (20A/diode) — Higher current rating provides more design margin.; MBR40200CT: Higher current rating provides significant margin.; MBR30100CT: Higher current rating.
Polarity Or Type	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	Common Cathode	1 Pair Common Cathode — Diode configuration matches.; MBR40200CT: Diode configuration matches based on ES data.; MBR30100CT: Functionally equivalent configuration.

Application & sourcing insights

Questions & answers

Candidates like MBR40200CT or MBR30200CT are excellent alternatives, offering higher voltage (200V) and current (30-40A) ratings in the same TO-220AB package for increased design margin.