STMicroelectronics STPS30M80CG-TR

Overview

STPS30M80CG-TR from STMicroelectronics is a dual common-cathode Schottky rectifier in D2PAK package, rated for 80 V repetitive peak reverse voltage and 2 × 15 A average forward current per diode at Tc = 150 °C, with typical forward voltage of 0.575 V at 15 A and 125 °C - optimized for high-frequency SMPS in notebook adapters and LCD TV power supplies.

For engineers reviewing the STPS30M80CG-TR datasheet, STPS30M80CG-TR pinout, STPS30M80CG-TR application, or STPS30M80CG-TR equivalent, key selection criteria include low VF/IR trade-off, 175 °C max junction temperature, insulated thermal performance (Rth(j-c) = 0.88 °C/W total), avalanche capability (100 V, 1 µs), and D2PAK surface-mount compatibility for high-power density designs.

Technical Context

This dual Schottky rectifier integrates two independent anodes sharing a common cathode terminal, enabling synchronous or interleaved conduction paths in center-tapped or dual-output DC-DC converters. Its low forward voltage drop and low leakage current are achieved via platinum-doped silicon process and optimized metal-semiconductor interface.

The device operates with specified avalanche energy handling (9500 W peak, 1 µs) and thermal coupling between diodes quantified by Rth(c) = 0.15 °C/W, allowing accurate junction temperature estimation when both diodes conduct simultaneously under δ = 0.5 duty cycle conditions.

Key Specifications

Pinout & Package

STPS30M80CG-TR uses a 3-pin D2PAK (TO-263) surface-mount package with exposed metal tab serving as common cathode (K) and primary thermal path. The insulated plastic body provides creepage/clearance compliance for AC-DC adapter safety standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CTQ045PbF and MBR30H80CT, STPS30M80CG-TR uniquely delivers 80 V blocking with 0.575 V VF at 15 A and 125 °C - enabling compact, fanless 19 V/90 W adapters where both voltage margin and thermal headroom are simultaneously constrained.

Availability

STPS30M80CG-TR is available at Aetrix Electronics and suitable for notebook AC adapters, LCD TV power supplies, game console PSUs, and desktop ATX +12 V rails requiring stable component supply across industrial and consumer production cycles.

Supply support for STPS30M80CG-TR 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 automotive, industrial, and consumer markets.

This device belongs to ST's STPS high-efficiency Schottky rectifier product line, engineered specifically for high-frequency switch-mode power supplies where low VF, low IR, and avalanche ruggedness are mandatory for reliability in compact, high-power-density adapters.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS30M80CG-TR supports continuous operation up to 150 °C case temperature per diode, as specified in Table 2 for IF(AV) = 15 A. Exceeding this requires linear derating per Figure 3, with zero average current allowed at 175 °C case temperature due to thermal runaway risk.

Does the D2PAK package provide electrical insulation between tab and leads?

No - the D2PAK package used in STPS30M80CG-TR has a non-insulated metal tab that is electrically connected to the common cathode (K) terminal. Isolation must be achieved externally via insulating thermal pads or mica washers when mounting to grounded heatsinks.

How is the 9500 W avalanche power rating applied in circuit design?

The 9500 W rating applies to 1 µs pulses at Tj = 25 °C and defines the maximum single-event energy the device can absorb without failure. Designers use it to validate flyback transformer leakage inductance and clamp circuit sizing - exceeding this value risks permanent junction damage even if voltage stays below VRRM.

Can STPS30M80CG-TR replace STPS30M80CT in existing TO-220AB layouts?

No - STPS30M80CG-TR uses a D2PAK surface-mount footprint incompatible with TO-220AB through-hole pads. Mechanical rework is required, including PCB redesign for thermal copper area, solder stencil aperture, and reflow profile adjustment to accommodate 1.48 g mass and exposed tab soldering.