Skip to main content
Log in
STMicroelectronics STPS15SM80CFP — Discrete Semiconductors

STPS15SM80CFP Schottky Diode, 80V 7.5A Dual Common Cathode

MPNSTPS15SM80CFP
Obsolete

STMicroelectronics STPS15SM80CFP, dual Schottky rectifier, 1 Pair Common Cathode, 80 V DC reverse, 7.5 A average per diode, 780 mV forward drop, TO-220AB Full-Pak through-hole package, 175°C max junction temperature.

STMicroelectronics STPS15SM80CFP datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS15SM80CFP specifications
ParameterValue
Diode typeSchottky
MountingThrough Hole
Voltage - DC reverse (Vr)80 V
Voltage - forward (Vf) (Max) @ if780 mV @ 7.5 A
Current - reverse leakage @ vr20 µA @ 80 V
Current - average rectified (Io) (per diode)7.5A
Operating temperature - junction175°C(Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-220-3 Full Pack
Diode configuration1 Pair Common Cathode

Product details

Dual Schottky in a common-cathode pair — what it does

The STPS15SM80CFP is a dual Schottky rectifier from STMicroelectronics, configured as a 1 Pair Common Cathode in a single TO-220AB Full-Pak through-hole package.

175°C junction — why it matters for the thermal budget

The maximum junction temperature of 175°C is a solid margin for power-supply designs that run hot — think enclosed PSUs, motor drives, or any board where airflow is restricted. With a 7.5 A per-diode load and 780 mV Vf, each diode dissipates roughly 5.85 W at full current. The TO-220AB Full-Pak (fully isolated tab) simplifies heatsinking without an insulating pad, but the thermal resistance through the plastic tab is higher than a standard TO-220 — so that 175°C ceiling is what keeps you from derating too aggressively. If your ambient is 85°C, you have about 90°C of headroom to the junction limit; a quick thermal calculation against the package's RthJA (not listed here, but typical for Full-Pak is around 60–70°C/W) will tell you whether you need forced air or a larger heatsink.

STMicroelectronics lists the STPS15SM80CFP as Obsolete. If you are qualifying a replacement, the common-cathode dual-Schottky space at 80 V / 7.5 A per diode has several active alternatives from ST and other vendors — but pin compatibility and footprint need checking against the TO-220AB Full-Pak mechanical outline.

Reverse leakage at 80 V — the catch with Schottkys

Reverse leakage is specified at 20 µA at 80 V reverse voltage. That is typical for a Schottky at its rated blocking voltage — the trade-off for the low forward drop. At elevated junction temperatures, Schottky leakage rises exponentially; at 125°C junction, expect that 20 µA to be several milliamps. If your circuit idles at high temperature with the diode reverse-biased (e.g., OR-ing diode in a redundant supply), budget for that leakage in your quiescent-current calculation. It is not a problem for most switching supplies, but it rules out this part for any ultra-low-standby-power design where the diode sits reverse-biased for long periods.

Frequently asked questions

What is the equivalent of STPS15SM80CFP?

There is no single pin-compatible replacement listed by STMicroelectronics for this exact order code. Any equivalent must match the dual common-cathode Schottky configuration, 80 V reverse voltage, 7.5 A per-diode rating, and the TO-220AB Full-Pak (fully isolated) package. Several active Schottky diodes from ST and other manufacturers fit the electrical spec, but the Full-Pak mechanical outline is less common — verify the package drawing before substituting. We can help identify candidates when you submit an RFQ.

What is the maximum junction temperature of STPS15SM80CFP?

The maximum junction temperature is 175°C. This is the absolute limit; continuous operation should stay below this value with adequate derating for reliability.

Is STPS15SM80CFP RoHS compliant?

The evidence does not explicitly state RoHS compliance for this part. Given its obsolete status, verify RoHS status with the specific date code lot at the time of ordering. We can confirm compliance documentation when quoting.

Where can I buy STPS15SM80CFP?

We source the STPS15SM80CFP through independent distribution channels. Submit an RFQ for current availability and pricing — we confirm both at quote time. No stock or price figures are published here because availability changes daily for an obsolete part.