STMicroelectronics STPS3030CG

Overview

STPS3030CG from STMicroelectronics is a dual low-drop Schottky rectifier in D2PAK package, rated for 30 V repetitive reverse voltage and 2 × 15 A average forward current per diode at T_c = 135 °C. It delivers low forward voltage (0.42 V max at 15 A, 25 °C), negligible switching losses, and avalanche capability up to 4100 W (1 µs pulse), targeting high-efficiency DC-DC converters and SMPS freewheeling paths.

For engineers reviewing the STPS3030CG datasheet, STPS3030CG pinout, STPS3030CG application, or STPS3030CG equivalent, key selection criteria include its dual-diode configuration, 0.8 °C/W total thermal resistance (junction-to-case), 10,000 V/µs dV/dt rating, and D2PAK mechanical compatibility with high-power PCB thermal pads.

Technical Context

This dual Schottky rectifier integrates two independent anode-cathode junctions in a single D2PAK thermally optimized package, enabling shared heatsinking while maintaining electrical isolation between channels. Its low R_th(j–c) (0.8 °C/W total) and low V_F (0.36–0.53 V across temperature and current) directly reduce conduction loss and thermal stress in high-frequency power stages.

The device supports avalanche energy handling (P_ARM = 4100 W at T_j = 25 °C, t_p = 1 µs), specified per diode, and exhibits stable reverse leakage (<180 mA at 125 °C, V_R = 30 V), making it suitable for transient-prone freewheeling and polarity protection circuits where reliability under overvoltage stress is critical.

Key Specifications

Pinout & Package

STPS3030CG is housed in a surface-mount D2PAK (TO-263) package with three terminals: two anodes (A1, A2) and one common cathode (K). The tab is electrically connected to the cathode and serves as the primary thermal path.

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, STPS3030CG uniquely balances low V_F, high dV/dt immunity, and documented avalanche capability in a thermally efficient D2PAK package-making it optimal for space-constrained, high-reliability DC-DC designs requiring transient robustness.

Availability

STPS3030CG is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, solar microinverters, and automotive body control modules requiring stable component supply and long-term production continuity.

Supply support for STPS3030CG 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, specializing in power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The STPS3030 series belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for low-voltage, high-frequency power conversion where minimal conduction loss and thermal management are critical design constraints.

FAQ

What is the maximum junction temperature for continuous operation?

The absolute maximum operating junction temperature (T_j) is 150 °C, as defined in Table 1. Operation above this limit risks thermal runaway, especially under high ambient conditions or insufficient heatsinking. Derating curves in Figure 2 show that at T_amb = 75 °C and δ = 0.5, the usable I_F(AV) drops to ~10 A per diode.

Is the cathode tab electrically isolated from the PCB ground plane?

No-the metal tab is internally connected to the common cathode (K) terminal and must be electrically tied to the circuit's output reference node. When mounted on a copper pour, that pour becomes part of the cathode net; isolation requires insulated mounting hardware or non-conductive thermal interface material.

Can STPS3030CG replace STPS3030CT in existing designs?

Yes, with mechanical and thermal considerations: both share identical electrical specs, but STPS3030CG uses D2PAK (surface-mount) while STPS3030CT uses TO-220AB (through-hole). PCB layout, solder profile, and heatsink attachment method must be revised; thermal performance improves slightly due to lower R_th(j–c) (0.8 vs. 1.2 °C/W per diode).

Does STPS3030CG meet automotive AEC-Q101 requirements?

No-STPS3030CG is not qualified to AEC-Q101. ST's official documentation states "ST products which are not specified as 'automotive grade' may only be used in automotive applications at user's own risk." For automotive use, consider ST's AEC-Q101-qualified equivalents like STPS30L30DJF.