Vishay General Semiconductor - Diodes Division 30CPQ150

Overview

30CPQ150 from Vishay is a center-tap common-cathode dual Schottky rectifier optimized for high-temperature industrial power conversion, with 150 V reverse voltage rating, 2 × 15 A average forward current per leg, and 175 °C maximum junction temperature - deployed in switching power supplies and reverse battery protection circuits.

For engineers reviewing the 30CPQ150 datasheet, 30CPQ150 pinout, 30CPQ150 application, or 30CPQ150 equivalent, key selection criteria include thermal resistance (R_thJC = 2.20 °C/W per leg), low forward voltage (V_F = 0.78 V at 15 A, 125 °C), surge robustness (I_FSM = 1000 A), and TO-247AC mechanical mounting compatibility.

Technical Context

This dual-leg Schottky rectifier uses proprietary barrier technology to achieve low reverse leakage at elevated temperatures up to 175 °C, enabling reliable operation in high-power-density industrial converters where thermal management is constrained.

Its center-tap common-cathode configuration supports synchronous rectification topologies and freewheeling paths in DC/DC stages, with fast recovery (dV/dt = 10,000 V/µs) and low junction capacitance (C_T = 340 pF at 5 V) minimizing switching losses.

Key Specifications

Pinout & Package

Package: TO-247AC (JEDEC), center-tap common-cathode configuration with isolated anodes and shared cathode terminal. Mounting torque: 6–12 kgf·cm (5–10 lbf·in). Approximate weight: 6 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPQ150, the 30CPQ150 offers identical performance with standard leaded finish; versus MBR30H150CT, it delivers 0.14 V lower forward voltage and superior high-temperature leakage control - directly improving efficiency and thermal margin in demanding power stages.

Availability

30CPQ150 is available at Aetrix Electronics and suitable for switching power supplies, reverse battery protection circuits, and industrial DC/DC converters requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for 30CPQ150 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

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in high-power rectifiers and precision analog devices.

The 30CPQ150 belongs to Vishay's High Power Products Schottky rectifier line, engineered for industrial-grade reliability, high-temperature operation, and low-loss performance in mission-critical power conversion systems.

FAQ

What is the maximum junction temperature rating for the 30CPQ150?

The 30CPQ150 is rated for a maximum junction temperature of 175 °C, validated across its full operating voltage and current range. This specification enables use in high-ambient environments such as enclosed industrial power supplies and automotive under-hood applications. The 30CPQ150 achieves this rating through proprietary barrier technology and high-purity epoxy encapsulation, ensuring stable reverse leakage and long-term reliability even at sustained elevated temperatures.

Does the 30CPQ150 have a center-tap configuration, and how is it implemented?

Yes, the 30CPQ150 features a center-tap common-cathode configuration: two independent anode terminals (Pins 1 and 3) share a single cathode terminal (Pin 2). This arrangement supports dual-output rectification or bidirectional blocking in compact layouts. The TO-247AC package physically isolates the anodes while thermally linking both junctions to the common cathode tab, allowing efficient heatsinking and balanced current sharing between legs in the 30CPQ150.

What is the forward voltage drop of the 30CPQ150 at rated current and temperature?

The 30CPQ150 exhibits a maximum forward voltage drop of 0.78 V per leg at 15 A and 125 °C junction temperature, as specified in the Electrical Specifications table. At 25 °C, V_F is 1.00 V at 15 A. This low V_F directly reduces conduction losses and improves system efficiency - a key advantage over standard silicon rectifiers and competing Schottky devices like the MBR30H150CT, which specifies 0.92 V under identical conditions.

Is the 30CPQ150 suitable for reverse battery protection applications?

Yes, the 30CPQ150 is explicitly designed for reverse battery protection, as confirmed in its official product description. Its 150 V reverse voltage rating, 175 °C junction temperature capability, and low high-temperature leakage (15 mA at 125 °C) make it robust against cold-cranking surges and under-hood thermal stress. In this role, the 30CPQ150 leverages its common-cathode topology to block reverse polarity while maintaining low forward loss during normal operation - a verified use case documented in Vishay's application guidance for the 30CPQ150.

What is the thermal resistance from junction to case for each leg of the 30CPQ150?

The 30CPQ150 has a maximum thermal resistance of 2.20 °C/W per leg (junction-to-case), measured under DC operation. This value is critical for heatsink sizing in continuous 15 A applications. The datasheet also specifies a lower 1.10 °C/W for the entire package (junction-to-case, both legs combined), reflecting the shared thermal path through the common cathode tab. Proper mounting with recommended torque (6–12 kgf·cm) and thermal interface material ensures the 30CPQ150 meets its rated R_thJC performance.