STMicroelectronics STPS15L30CB

Overview

STPS15L30CB from STMicroelectronics is a dual-center-tab Schottky rectifier in DPAK package, rated for 30 V repetitive peak reverse voltage and 2 × 7.5 A average forward current per diode, with typical forward voltage drop of 0.34 V at 7.5 A and 125 °C - optimized for low-voltage, high-frequency DC-DC converters and free-wheeling in SMPS.

For engineers reviewing the STPS15L30CB datasheet, STPS15L30CB pinout, STPS15L30CB application, or STPS15L30CB equivalent, key selection criteria include its dual-diode thermal coupling behavior, junction-to-case thermal resistance (4 °C/W per diode), avalanche rating (200 W, 10 µs), low capacitance, and ECOPACK®2-compliant DPAK packaging for industrial power conversion designs.

Technical Context

This dual Schottky rectifier integrates two independent diodes sharing a common cathode connection via the center tab, enabling synchronous or interleaved conduction paths in half-bridge or full-wave topologies. Its low VF and negligible switching losses stem from platinum-silicide barrier technology and optimized epitaxial structure.

Thermal design requires accounting for mutual heating: total junction temperature rise depends on both diodes' power dissipation and the shared case thermal path (Rth(c) = 0.7 °C/W), with total Rth(j-c) = 2.4 °C/W for the device. Avalanche capability supports transient overvoltage clamping without external snubbers.

Key Specifications

Pinout & Package

DPAK (TO-252) package with three terminals: two anodes (A1, A2) and one common cathode (K) connected to the exposed center thermal tab. The tab is electrically tied to cathode and must be soldered to PCB copper for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR1530CT and VS-15BQ030PBF, STPS15L30CB uniquely combines dual-anode integration, 200 W avalanche capability, and 4 °C/W per-diode thermal resistance in DPAK - making it optimal for thermally dense, transient-hardened dual-rail power stages.

Availability

STPS15L30CB is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for STPS15L30CB 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STPS15L30CB belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion where low VF, fast recovery, and robust thermal performance are mandatory.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature is 150 °C, validated under conditions where dPtot/dTj < 1/Rth(j-a) to prevent thermal runaway. Operation above this limit risks permanent degradation of the Schottky barrier and increased IR. Derating curves in Figure 2 show usable IF(AV) drops to 5.2 A at 85 °C ambient with 10 cm² copper pad.

Can STPS15L30CB be used in parallel configurations?

Yes - the dual-diode structure supports internal current sharing when both anodes are driven identically, but external paralleling with other STPS15L30CB units requires matched VF (±5 mV) and symmetrical PCB layout to avoid thermal imbalance. Thermal coupling between devices must be minimized to maintain individual Rth(j-c) performance.

Is the center tab electrically isolated from the cathode?

No - the exposed DPAK thermal tab is internally bonded to the common cathode (K) terminal and is not insulated. It must be connected to the cathode net on the PCB; isolation requires external insulation such as Kapton tape or ceramic垫片, which degrades thermal performance by adding >2.5 °C/W interface resistance.

Does STPS15L30CB meet AEC-Q101 for automotive use?

No - STPS15L30CB is qualified to industrial grade (–65 °C to +175 °C storage, 150 °C max Tj) but is not AEC-Q101 stress-tested. For automotive applications, ST recommends the AEC-Q101-qualified STPS15L30CW variant, which shares identical electrical specs but includes additional qualification testing for humidity, temperature cycling, and mechanical shock.