STMicroelectronics STPS10LCD100CFP

Overview

STPS10LCD100CFP from STMicroelectronics is a dual center-tap high-voltage Schottky rectifier optimized for high-frequency switched-mode power supplies, featuring 100 V repetitive peak reverse voltage (VRRM), 5 A average forward current per diode at Tc = 145 °C, and a typical forward voltage drop of 0.64 V at 125 °C/5 A. It uses an insulated TO-220FPAB package rated for 2000 VRMS isolation and supports avalanche energy handling up to 3360 W (tp = 1 µs).

For engineers reviewing the STPS10LCD100CFP datasheet, STPS10LCD100CFP pinout, STPS10LCD100CFP application, or STPS10LCD100CFP equivalent, key selection considerations include its dual-center-tap configuration, low leakage (1.5 µA @ 25 °C), high junction temperature rating (175 °C), and insulated thermal path for high-reliability AC/DC front-end and PFC stages.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode (K) terminal and separate anodes (A1, A2), enabling center-tapped transformer secondary rectification in full-wave configurations. Its low VF–IR trade-off targets efficiency-critical SMPS designs where conduction loss must be minimized without compromising reverse blocking stability.

The TO-220FPAB package provides electrical isolation between the die and mounting surface (2000 VRMS), making it suitable for applications requiring reinforced insulation-such as industrial AC/DC adapters and telecom power modules-while maintaining thermal resistance of 4.9 °C/W (junction-to-case, per device) under forced conduction cooling.

Key Specifications

Pinout & Package

Package: TO-220FPAB - Insulated plastic package with three leads (A1, K, A2), epoxy meeting UL94 V0, and recommended torque of 0.4–0.6 N·m. Mounting tab is electrically isolated from internal die.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-10CTH01-M3 and MBR10100CT, STPS10LCD100CFP uniquely delivers certified isolation, lower VF, and superior thermal resistance-making it the sole choice for space-constrained, safety-compliant, high-efficiency SMPS where board-level insulation cannot be guaranteed.

Availability

STPS10LCD100CFP is available at Aetrix Electronics and suitable for server AC/DC power supplies, industrial PLC power modules, and telecom 48 V brick converters requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for STPS10LCD100CFP 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, analog ICs, and MEMS sensors for industrial, automotive, and consumer markets.

This device belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC and DC/DC conversion in safety-critical and thermally demanding power systems.

FAQ

What is the maximum continuous forward current per diode at 100 °C case temperature?

At Tc = 100 °C, the maximum average forward current per diode is 7.2 A, derived from linear derating between 5 A at 145 °C and 10 A at 135 °C per Table 2. This value assumes δ = 0.5 duty cycle and proper heatsink attachment with thermal interface material meeting Rth(c) ≤ 3.0 °C/W coupling specification.

Does STPS10LCD100CFP support paralleling of anodes for higher current?

No-A1 and A2 are electrically isolated anodes intended for center-tapped transformer secondaries. Paralleling them would short the transformer winding. The device is not designed for parallel anode use; each anode must connect to separate transformer legs to maintain correct full-wave rectification topology.

Can this part replace a standard TO-220AB dual Schottky in existing layouts?

Physical footprint matches TO-220AB, but the insulated TO-220FPAB requires no insulating washer and allows direct metal heatsink contact. However, mechanical mounting hole alignment differs: FPAB uses centered mounting hole (L6 = 15.8–16.4 mm), while AB uses offset hole. PCB redesign is required for mechanical compatibility.

What is the surge current rating for non-repetitive 10 ms pulses?

The non-repetitive surge forward current is 150 A for 10 ms sinusoidal pulses (Table 2). This rating applies per diode under specified test conditions (Tj initial = 25 °C, tp = 10 ms, half-sine waveform), and must be verified against actual circuit I²t stress to avoid bond wire fusing.