STMicroelectronics STPS5S100SFY

Overview

STPS5S100SFY from STMicroelectronics is an AEC-Q101-qualified 5 A, 100 V automotive Schottky rectifier in PSMC (TO-277A) package, featuring 0.590 V typical forward voltage at 125 °C and 5 A, 175 °C maximum junction temperature, and wettable flanks for automated optical inspection-used in DC/DC converters and reverse battery protection circuits.

For engineers reviewing the STPS5S100SFY datasheet, STPS5S100SFY pinout, STPS5S100SFY application, or STPS5S100SFY equivalent, key selection criteria include its guaranteed VRRM across -40 °C to +175 °C, low conduction losses (P = 0.520 × IF(AV) + 0.030 × IF²(RMS)), avalanche capability (290 W, tp = 10 µs), and ECOPACK2 compliance for automotive-grade reliability.

Technical Context

This Schottky rectifier uses a planar silicon structure optimized for low VF and low IR trade-off, with specified avalanche energy handling up to 290 W under 10 µs pulses at Tj = 125 °C. Its thermal design supports junction-to-case resistance of 1.46 °C/W and operation up to 175 °C without derating when mounted on adequate copper area.

The PSMC (TO-277A) package integrates a single anode and cathode terminal configuration with low-profile height (1.1 mm typ.) and wettable flanks-enabling solder-joint inspection and high-density PCB layout in space-constrained automotive power modules.

Key Specifications

Pinout & Package

STPS5S100SFY is housed in a 3-terminal PSMC (TO-277A) surface-mount package with anode–anode–cathode configuration: two anode terminals (electrically common) and one cathode terminal. The package features low profile (1.1 mm typical height), wettable flanks, and FR4-compatible footprint per Figure 9 in DS13593.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSS5C100MX and VS-5EWH10FN-M3, STPS5S100SFY uniquely combines AEC-Q101, wettable flanks, 1.46 °C/W Rth(j-c), and 0.590 V VF at 125 °C-making it optimal for thermally constrained, high-reliability automotive power stages requiring AOI and PPAP support.

Availability

STPS5S100SFY is available at Aetrix Electronics and suitable for DC/DC converters, auxiliary power supplies, reverse battery protection, and freewheeling functions requiring stable component supply in automotive production programs.

Supply support for STPS5S100SFY 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 analog, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

STPS5S100SFY belongs to ST's automotive-qualified power Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature operation in 12 V, 24 V, and 48 V vehicle electrical architectures.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS5S100SFY supports continuous operation up to 160 °C case temperature at its rated 5 A average forward current (δ = 0.5), as specified in Table 1. Exceeding this requires derating per Figure 1, where IF(AV) drops to ~3.2 A at Tc = 175 °C. Thermal design must ensure Rth(j-c) × (Tj − Tc) ≤ Pdissipation.

Does STPS5S100SFY require a heatsink for 5 A operation?

No external heatsink is required if mounted on ≥6 cm² of 70 µm copper on FR4, achieving Rth(j-a) ≈ 12 °C/W (per Figure 7). At 5 A and 0.59 V VF, power dissipation is ~2.95 W, resulting in ~35 °C rise above ambient-well within 175 °C Tj limit. Smaller copper areas necessitate thermal derating.

Is STPS5S100SFY compatible with lead-free reflow profiles?

Yes. STPS5S100SFY is qualified for standard JEDEC J-STD-020D lead-free reflow, with peak temperature up to 260 °C for 30 seconds. Its PSMC package uses matte tin plating and meets IPC/JEDEC standards for wetting balance and intermetallic formation, supporting robust solder joint integrity.

How is avalanche capability tested and rated?

Avalanche capability is verified per AEC-Q101 stress test condition AV1, applying unclamped inductive switching (UIS) pulses at Tj = 125 °C. The 290 W rating (Table 1) corresponds to 10 µs pulse width with 100% device survival across lot sampling. It reflects single-pulse energy absorption-not repetitive operation-and is validated using standardized test fixtures per JEDEC standards.