STMicroelectronics STPS60L45CW

Overview

STPS60L45CW from STMicroelectronics is a dual center-tap Schottky barrier rectifier optimized for 5 V output stages in offline AC/DC power supplies, with 45 V repetitive peak reverse voltage, 60 A average forward current (per device), 0.44–0.72 V forward voltage drop at 30–60 A and 25–125 °C, and TO-247 package for high-power thermal management.

For engineers reviewing the STPS60L45CW datasheet, STPS60L45CW pinout, STPS60L45CW application, or STPS60L45CW equivalent, key selection criteria include low conduction loss (0.28×IF(AV) + 0.0073×IF²(RMS)), avalanche-rated 12.3 kW pulse power, dV/dt capability of 10,000 V/µs, and junction-to-case thermal resistance of 0.42 °C/W (total device).

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification or dual-output DC/DC topologies. Its negligible switching losses and extremely fast recovery support operation up to several hundred kHz in high-frequency converters.

The device features specified avalanche capability (12.3 kW at Tj = 25 °C, tp = 1 µs), critical dV/dt rating of 10,000 V/µs, and thermal design validated for continuous operation at Tj ≤ 150 °C with Rth(j–c) = 0.42 °C/W total - enabling use without forced air cooling in 50–100 W industrial SMPS designs.

Key Specifications

Pinout & Package

Packaged in TO-247 with isolated mounting tab (electrically connected to cathode), the STPS60L45CW has three terminals: two anodes (A1, A2) and one shared cathode (K). The case serves as thermal path and electrical reference for both diodes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-60CPH045 and MBR6045CT, STPS60L45CW delivers superior thermal performance (0.42 °C/W), guaranteed avalanche robustness (12.3 kW), and lower conduction loss - making it the only option qualified for 30–60 A, uncooled, high-reliability 5 V power stages.

Availability

STPS60L45CW is available at Aetrix Electronics and suitable for server power supplies, industrial AC/DC adapters, telecom rectifier modules, and automotive onboard charger auxiliary supplies requiring stable component supply and long-term production continuity.

Supply support for STPS60L45CW 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STPS series targets high-efficiency, high-reliability power conversion - specifically engineered for low-voltage, high-current rectification in offline SMPS, with emphasis on thermal robustness and transient survivability.

FAQ

Is STPS60L45CW suitable for synchronous rectification in LLC resonant converters?

Yes. Its negligible reverse recovery charge (Qrr ≈ 0), 0.44 V forward drop at 30 A/125 °C, and 10,000 V/µs dV/dt rating make it ideal for synchronous rectification in 200–500 kHz LLC topologies. Layout must maintain tight coupling between A1/A2 traces and shared K to minimize loop inductance.

What is the maximum continuous current per diode at 85 °C ambient with 10 °C/W heatsink?

At Tamb = 85 °C and Rth(c–a) = 10 °C/W, total Rth(j–a) = 0.42 + 10 = 10.42 °C/W. With Tj(max) = 150 °C, ΔT = 65 °C → Pmax = 65 / 10.42 ≈ 6.24 W. Using P = 0.28×IF(AV) + 0.0073×IF²(RMS) and IF(RMS) ≈ 1.58×IF(AV), solving yields IF(AV) ≈ 22.3 A per diode (44.6 A device total).

Does the TO-247 package require electrically isolating hardware?

Yes. The metal tab is internally connected to the common cathode (K) terminal. If the heatsink is grounded, an isolating washer (e.g., mica or silicone pad) and shoulder washer must be used to prevent shorting. Mounting torque must stay within 0.8–1.0 N·m to avoid die fracture.

How does the specified avalanche capability impact system-level reliability?

The 12.3 kW avalanche rating (tp = 1 µs) ensures survival during worst-case voltage transients - such as MOSFET shoot-through or transformer leakage spike - without parametric shift or failure. This eliminates need for external clamping components in flyback or forward converters, improving MTBF by >25% in telecom-grade power supplies.