STMicroelectronics STPS10H100SFY

Overview

STPS10H100SFY from STMicroelectronics is an AEC-Q101-qualified automotive power Schottky rectifier in PSMC (TO-277A) package, rated for 100 V repetitive peak reverse voltage, 10 A average forward current, and 175 °C maximum junction temperature; it serves as a freewheeling or reverse polarity protection diode in high-temperature DC/DC converters.

For engineers reviewing the STPS10H100SFY datasheet, STPS10H100SFY pinout, STPS10H100SFY application, or STPS10H100SFY equivalent, key selection criteria include low forward voltage (0.615 V typ. at 10 A, 125 °C), negligible switching losses, wettable flanks for automated optical inspection, and avalanche capability up to 518 W (10 µs pulse).

Technical Context

This Schottky rectifier uses a planar metal-silicon junction optimized for low IR and high-temperature operation, with reverse leakage limited to 5 mA at 125 °C and VR = VRRM. Its thermal resistance junction-to-case is 2.1 °C/W, enabling efficient conduction cooling in compact automotive power stages.

The device features specified avalanche capability (PARM = 518 W at Tj = 125 °C, tp = 10 µs) and guaranteed VRRM across -40 °C to +175 °C, supporting robust operation in engine bay and ADAS power systems where transient overvoltage and thermal cycling are critical.

Key Specifications

Pinout & Package

Package: PSMC (TO-277A), surface-mount, 3-terminal configuration with two anodes shorted internally and one cathode terminal; wettable flanks support automated optical inspection of solder joints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with NSS10M100SW1T1G and VS-10EWH10-M3/45, STPS10H100SFY uniquely combines AEC-Q101 qualification, wettable flanks, and 518 W avalanche capability-making it the only option qualified for PPAP-managed, high-reliability automotive power stages requiring both visual process control and transient robustness.

Availability

STPS10H100SFY is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse polarity protection circuits, and freewheeling diode applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STPS10H100SFY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STPSxHxxxFY series targets high-reliability automotive power conversion, delivering Schottky rectifiers with enhanced thermal robustness, AEC-Q101 compliance, and manufacturability features like wettable flanks for next-generation automotive electronics.

FAQ

Is STPS10H100SFY suitable for synchronous rectification?

No - STPS10H100SFY is a unidirectional Schottky rectifier, not a synchronous MOSFET controller or integrated driver. It functions as a passive freewheeling or clamping diode. For synchronous rectification, a dedicated gate driver paired with a low-RDS(on) MOSFET is required; this part replaces the body diode but does not provide active switching control.

What is the maximum PCB copper area needed to maintain Tj ≤ 175 °C at 10 A?

At IF(AV) = 10 A and Tc = 140 °C, the datasheet specifies IF(AV) derating begins above that case temperature. Using Rth(j-a) curves, ≥10 cm² of 35 µm copper on FR4 (with internal layers) achieves Rth(j-a) ≈ 12 °C/W, allowing Tj = 140 °C + (6.15 W × 12 °C/W) = 214 °C - exceeding limit. Therefore, direct heatsinking via the tab (Rth(j-c) = 2.1 °C/W) is mandatory; PCB copper alone is insufficient.

Does STPS10H100SFY require a snubber circuit?

No snubber is required for typical switching frequencies (<1 MHz) due to negligible reverse recovery charge (Qrr ≈ 0). However, in high-di/dt inductive switching (e.g., >50 A/µs), a small RC snubber (e.g., 10 Ω + 100 pF) across cathode-anode may suppress voltage ringing caused by parasitic inductance in the layout - not device limitation, but board-level design consideration.

Can STPS10H100SFY be used in non-automotive industrial applications?

Yes - its 175 °C Tj(max), 100 V rating, and robust thermal performance make it suitable for industrial motor drives, solar microinverters, and telecom power supplies. However, ECOPACK®2 and PPAP documentation are automotive-focused; industrial users should verify compliance with IEC 60747-5-5 and relevant safety standards for their end equipment.