STMicroelectronics STPS3030CT

Overview

STPS3030CT from STMicroelectronics is a dual low-drop Schottky rectifier in TO-220AB package, rated for 2 × 15 A average forward current per diode, 30 V repetitive peak reverse voltage, and maximum junction temperature of 150 °C. It delivers low forward voltage drop (0.42 V max at 15 A, 25 °C) and low thermal resistance (1.2 °C/W per diode), enabling high-efficiency operation in DC–DC converters and SMPS freewheeling paths.

For engineers reviewing the STPS3030CT datasheet, STPS3030CT pinout, STPS3030CT application, or STPS3030CT equivalent, key selection criteria include conduction loss modeling (P = 0.26 × IF(AV) + 0.0107 × IF²(RMS)), avalanche capability (4100 W peak, 1 µs), dV/dt rating (10,000 V/µs), thermal coupling behavior (Rth(c) = 0.4 °C/W), and TO-220AB mechanical mounting torque (0.55 Nm recommended).

Technical Context

This dual common-cathode Schottky rectifier integrates two independent 30 V / 15 A diodes sharing a single cathode terminal, optimized for synchronous rectification and polarity protection in low-voltage, high-frequency power stages. Its negligible switching losses and extremely fast recovery eliminate reverse recovery charge concerns typical of PN junction diodes.

The device exhibits specified avalanche capability under transient overvoltage conditions, with normalized derating curves provided for pulse duration (1 µs to 100 µs) and junction temperature (25–150 °C). Thermal design relies on validated Rth(j–c) = 1.2 °C/W per diode and total Rth(j–c) = 0.8 °C/W for the dual-die assembly.

Key Specifications

Pinout & Package

STPS3030CT uses a TO-220AB package with isolated tab (electrically connected to cathode), standardized for through-hole mounting and heatsink attachment. Mechanical dimensions comply with JEDEC TO-220AB outline, including 3.75–3.85 mm mounting hole diameter and 0.55 Nm recommended torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPQ030 and MBR3030CT, STPS3030CT uniquely combines TO-220AB mechanical compatibility, 4100 W avalanche rating, and 10,000 V/µs dV/dt immunity-critical for robustness in high-di/dt industrial and automotive power stages where transient suppression is cost-sensitive.

Availability

STPS3030CT is available at Aetrix Electronics and suitable for server VRM output stages, industrial DC–DC converters, automotive infotainment power supplies, and battery-powered motor drives requiring stable component supply and long-term manufacturability.

Supply support for STPS3030CT 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 industrial, automotive, and consumer markets.

The STPS3030CT belongs to ST's "Low Drop Power Schottky Rectifier" product line, engineered specifically for high-efficiency, high-frequency power conversion in space-constrained and thermally demanding applications.

FAQ

What is the maximum continuous junction temperature for STPS3030CT?

The absolute maximum operating junction temperature is 150 °C, as defined in Table 1 of the official datasheet. This rating assumes proper heatsinking to maintain case temperature ≤135 °C at 15 A per diode. Exceeding this limit risks irreversible degradation of Schottky barrier integrity and accelerated leakage current rise.

Can STPS3030CT replace a single 30 A Schottky rectifier?

No-it is a dual 15 A device with separate anodes and a common cathode. Total device current rating is 30 A only under balanced loading (15 A per diode). Asymmetric loading above 15 A on one anode violates absolute maximum ratings and causes localized thermal runaway due to unequal current sharing.

Is the metal tab electrically isolated in STPS3030CT?

Yes-the TO-220AB package features an electrically isolated tab connected solely to the common cathode (K) terminal. This allows direct mechanical mounting to a grounded heatsink without shorting the anodes, provided insulation hardware (e.g., mica washer, shoulder washer) is used per ST's mounting recommendations.

Does STPS3030CT require derating at elevated ambient temperatures?

Yes-Figure 2 shows average forward current versus ambient temperature at δ = 0.5. At 70 °C ambient with natural convection (Rth(j–a) ≈ 50 °C/W), IF(AV) must be reduced to ~10 A per diode. Derating is mandatory to prevent junction temperature from exceeding 150 °C; actual limit depends on heatsink thermal resistance and airflow.