STMicroelectronics STPS10170CG

Overview

STPS10170CG from STMicroelectronics is a dual-center-tab high-voltage Schottky rectifier in D²PAK package, rated for 170 V repetitive peak reverse voltage, 5 A average forward current per diode (10 A total), and 175 °C maximum junction temperature. It delivers low forward voltage drop (0.69 V typ. at 5 A, 125 °C) with low leakage (≤10 µA at 25 °C, ≤10 mA at 125 °C), enabling efficient operation in high-frequency SMPS outputs.

For engineers reviewing the STPS10170CG datasheet, STPS10170CG pinout, STPS10170CG application, or STPS10170CG equivalent, key selection criteria include avalanche-rated power (220 W, 10 µs), thermal resistance (R_th(j-c) = 2.4 °C/W total), dual-diode isolation, and ECOPACK®2 compliance - critical for industrial AC-DC adapters and telecom power supplies requiring high reliability under thermal stress.

Technical Context

This dual Schottky rectifier integrates two independent anode-cathode junctions sharing a common cathode tab, configured for center-tab mounting to optimize thermal conduction. Each diode exhibits avalanche capability (220 W, 10 µs pulse), specified junction-to-case thermal resistance of 4 °C/W per diode (2.4 °C/W total), and operates up to 175 °C junction temperature without thermal runaway under proper heatsinking.

Its static characteristics are defined across temperature: forward voltage ranges from 0.92 V (25 °C, 5 A) to 0.75 V (125 °C, 5 A); reverse leakage stays ≤10 µA at 25 °C and ≤10 mA at 125 °C under full 170 V reverse bias - enabling stable performance in high-ambient environments like base station power modules.

Key Specifications

Pinout & Package

The STPS10170CG uses a D²PAK (TO-263) surface-mount package with three terminals: two anodes (A1, A2) and one shared cathode (K) on the exposed metal tab. The package features a single large thermal pad for mechanical and thermal anchoring, compliant with IPC-7351B standard footprint dimensions (E = 10.0–10.55 mm, D = 8.6–9.35 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR10150CT and VS-10TQ035, STPS10170CG uniquely satisfies 170 V systems with low thermal resistance and avalanche ruggedness - making it irreplaceable in 230 VAC-input telecom and industrial power supplies where voltage margin and surge immunity are non-negotiable.

Availability

STPS10170CG is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, telecom DC-DC bricks, and LED driver secondary-side rectification requiring stable component supply and long-term lifecycle support.

Supply support for STPS10170CG 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.

The STPS high-voltage Schottky rectifier product line targets high-efficiency, high-reliability power conversion in industrial and telecom infrastructure - emphasizing thermal robustness, avalanche tolerance, and environmental compliance.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS10170CG has a maximum junction temperature of 175 °C and a total junction-to-case thermal resistance of 2.4 °C/W. With typical conduction losses of ~3.5 W per diode (7 W total), the case temperature must remain ≤158 °C to maintain safe margin. This requires ≥20 cm² of 2 oz copper under the tab or active heatsinking in high-power designs.

Can the two diodes be used independently in separate circuits?

Yes - the STPS10170CG contains two electrically isolated Schottky junctions sharing only the cathode tab. Anode 1 and Anode 2 can drive separate loads or topologies (e.g., dual-output flyback), provided each anode's current stays within 5 A average and thermal coupling is managed via shared tab conduction.

Is the STPS10170CG suitable for synchronous rectification replacement?

No - it is a passive Schottky rectifier, not a synchronous MOSFET controller or integrated driver. While its low V_F offers near-synchronous efficiency in low-frequency (<100 kHz) SMPS, it cannot replace active synchronous rectifiers in high-frequency or zero-voltage-switching topologies requiring gate timing control.

Does the device require derating for pulsed avalanche operation?

Yes - the 220 W avalanche rating applies only to 10 µs pulses at T_j = 125 °C. For longer pulses, power must be derated per Figure 3 in the datasheet: e.g., at 100 µs, maximum P_ARM drops to ~70 W. Continuous avalanche operation is not supported; the device is rated for single-event surge immunity only.