STMicroelectronics STPS20LCD200CBTR

Overview

STPS20LCD200CBTR from STMicroelectronics is a dual high-voltage Schottky rectifier in DPAK package, rated for 200 V repetitive peak reverse voltage, 10 A average forward current per diode, and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.76 V typ. at 10 A, 125 °C) and low leakage current (0.7 mA max at 125 °C), enabling high-efficiency operation in switched-mode power supplies for flat-panel TVs.

For engineers reviewing the STPS20LCD200CBTR datasheet, STPS20LCD200CBTR pinout, STPS20LCD200CBTR application, or STPS20LCD200CBTR equivalent, key selection criteria include thermal resistance (R_th(j-c) = 3 °C/W per diode), surge capability (125 A IFSM), dual-diode configuration, ECOPACK®2 compliance, and DPAK footprint compatibility with high-power SMPS layouts.

Technical Context

This dual common-cathode Schottky rectifier integrates two independent 200 V/10 A diodes sharing a single cathode terminal (K), optimized for synchronous rectification and output stage freewheeling in high-frequency DC-DC converters. Its low VF–IR trade-off enables stable conduction loss performance across load ranges.

Thermal design relies on conduction cooling via the exposed tab: R_th(j-c) is 3 °C/W per diode, but coupling between diodes introduces 0.6 °C/W inter-diode thermal resistance - requiring derating when both diodes operate simultaneously under high power.

Key Specifications

Pinout & Package

STPS20LCD200CBTR uses a 3-pin DPAK (TO-252) package with exposed thermal pad. Pin 1 (A1) and Pin 2 (A2) are anode terminals for Diode 1 and Diode 2 respectively; Pin 3 (K) is the shared cathode. The metal tab is electrically connected to the cathode and must be soldered to a thermal plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS20LCD200CBTR, STPS20L200CT offers superior surge handling in through-hole form, while MBR20200CTG trades efficiency and eco-compliance for lower unit cost - making the DPAK variant optimal for high-density, thermally constrained, and regulated consumer power designs.

Availability

STPS20LCD200CBTR is available at Aetrix Electronics and suitable for flat-panel TV power supplies, gaming console DC-DC modules, and industrial display PSUs requiring stable component supply, long-term lifecycle support, and tape-and-reel delivery for automated SMT lines.

Supply support for STPS20LCD200CBTR 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.

STPS20LCD200CBTR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability SMPS in space-constrained consumer electronics where thermal performance and environmental compliance are critical.

FAQ

What is the thermal pad connection requirement for STPS20LCD200CBTR?

The exposed metal tab (Pin K) is electrically and thermally connected to the cathode. It must be soldered to a dedicated PCB copper pour ≥4 cm² with ≥4 thermal vias (0.3 mm diameter) to an internal ground plane. Failure to provide adequate thermal relief risks exceeding 175 °C junction temperature under 10 A load.

Can STPS20LCD200CBTR replace a single-diode Schottky in existing designs?

Yes, but only if the circuit uses common-cathode topology and both anodes are independently driven. Its dual-diode structure cannot substitute for isolated or common-anode configurations. Layout must accommodate two anode pads and verify that shared cathode routing does not introduce ground loop noise in sensitive analog sections.

Is STPS20LCD200CBTR suitable for PFC front-end rectification?

No. With 200 V VRRM, it is rated only for secondary-side or low-line (<265 VAC) applications. PFC boost diodes require ≥600 V rating and soft-recovery characteristics to handle high dv/dt. Using this part in PFC would cause immediate avalanche failure during normal operation.

Does STPS20LCD200CBTR require a gate driver or control signal?

No. As a passive Schottky rectifier, it operates solely on forward bias voltage - no external control, timing, or drive circuitry is needed. Its conduction is fully determined by the voltage polarity and magnitude across each anode–cathode pair, making it inherently simple and reliable in uncontrolled rectification roles.