STMicroelectronics STPS16170CT

Overview

STPS16170CT from STMicroelectronics is a dual-center-tab high-voltage Schottky rectifier in D²PAK package, rated for 170 V repetitive peak reverse voltage and 2 × 8 A average forward current per diode at Tc = 150 °C, with typical forward voltage drop of 0.70 V at 125 °C and 8 A - optimized for high-frequency switched-mode power supplies in industrial AC/DC adapters and server PSUs.

For engineers reviewing the STPS16170CT datasheet, STPS16170CT pinout, STPS16170CT application, or STPS16170CT equivalent, key selection criteria include avalanche-rated 335 W peak power (tp = 10 µs), low 15 µA reverse leakage at 25 °C, junction-to-case thermal resistance of 1.8 °C/W total, and ECOPACK®2 compliance for lead-free assembly.

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode junctions sharing a common center tab (cathode) configuration, enabling synchronous or interleaved conduction in bridge or center-tap topologies. Its low VF–IR trade-off supports high-efficiency operation above 100 kHz switching frequencies while maintaining thermal stability up to 175 °C junction temperature.

The device features specified avalanche capability (PARM = 335 W at Tj = 125 °C, tp = 10 µs), validated per AN1768/AN2025, and uses epitaxial silicon construction to minimize stored charge and reverse recovery loss - eliminating minority-carrier tail current typical of PN junction rectifiers.

Key Specifications

Pinout & Package

STPS16170CT is housed in a surface-mount D²PAK (TO-263) package with three terminals: two anodes (A1, A2) and one shared cathode (K) on the center thermal tab. The package features a copper-exposed die attach pad for low-thermal-resistance PCB mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTH17 and MUR1620CT, STPS16170CT delivers lower conduction loss, superior thermal performance, and guaranteed avalanche robustness - making it optimal for high-efficiency, high-reliability 170 V-class SMPS where thermal headroom and transient immunity are critical.

Availability

STPS16170CT is available at Aetrix Electronics and suitable for industrial AC/DC adapters, telecom rectifier modules, and LED driver secondary-side rectification requiring stable component supply and long-term lifecycle support.

Supply support for STPS16170CT 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STPS high-voltage Schottky rectifier product line targets high-frequency power conversion applications demanding low VF, high Tj, and rugged avalanche performance - especially in space-constrained, convection-cooled industrial and telecom power supplies.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS16170CT is rated for 8 A average forward current per diode at Tc = 150 °C. Exceeding this temperature risks thermal runaway due to positive temperature coefficient of VF and IR; sustained operation above 150 °C requires derating per Figure 2 in the datasheet, with full 16 A total current only permissible below 100 °C case temperature.

Can STPS16170CT replace a single 16 A discrete Schottky diode?

No - STPS16170CT contains two independent 8 A Schottky junctions with separate anodes and a shared cathode. It cannot substitute a single-anode/single-cathode 16 A device without circuit redesign. Its dual-anode structure is intended for split-input or interleaved topologies, not parallel replacement.

Is the center tab electrically isolated from the anodes?

Yes - the center thermal tab is the common cathode (K) and is electrically isolated from both anodes (A1 and A2). A1 and A2 are fully isolated from each other and from K, confirmed by insulation resistance >10⁹ Ω per Table 2 absolute ratings and package construction in Figures 13–14.

Does STPS16170CT require a minimum solder mask opening for the cathode tab?

Yes - the D²PAK cathode tab must be soldered to a minimum 100 mm² copper area (≥10 mm × 10 mm) with ≥2 oz copper thickness and thermal vias to achieve the specified 1.8 °C/W Rth(j-c). ST recommends a solder mask opening matching the tab outline (8.6–9.35 mm × 10–10.55 mm per Table 7) to ensure full wetting and mechanical reliability.