STMicroelectronics STPS20150CR

Overview

STPS20150CR from STMicroelectronics is a dual center-tap Schottky rectifier in I²PAK (TO-262) package, rated for 150 V repetitive reverse voltage and 2 × 10 A average forward current per diode at TC = 155 °C, with typical forward voltage drop of 0.69 V at 10 A and 25 °C - designed for high-frequency switch-mode power supplies in industrial AC/DC adapters and server PSUs.

For engineers reviewing the STPS20150CR datasheet, STPS20150CR pinout, STPS20150CR application, or STPS20150CR equivalent, key selection criteria include thermal resistance (R_th(j-c) = 2.2 °C/W per diode), avalanche capability (480 W peak), insulated package options, and leakage-current performance at 125 °C and 150 °C junction temperatures.

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification in full-wave bridge or center-tapped transformer topologies. Its low VF and high T_j(max) = 175 °C support high-efficiency, compact PSU designs operating at >100 kHz switching frequencies.

Thermal design is enabled by direct conduction cooling via the tab-mounted case; R_th(j-c) is 2.2 °C/W per diode for I²PAK, and coupling resistance between diodes is specified as 0.3 °C/W - critical for accurate junction temperature estimation when both diodes conduct simultaneously.

Key Specifications

Pinout & Package

The STPS20150CR is housed in an I²PAK (TO-262) surface-mount package with isolated tab, UL 94 V0 epoxy molding, and mechanical dimensions compliant with Table 5 in DS2252 Rev 12 (e.g., D = 8.95–9.35 mm, E = 10.00–10.40 mm, L = 13.00–14.00 mm). The package supports conduction cooling only and is not electrically insulated from the cathode terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS20150CT and VS-20CPH15, the STPS20150CR offers superior thermal performance in SMT layouts, guaranteed avalanche ruggedness for transient-heavy topologies, and tighter VF consistency across temperature - making it optimal for high-density, high-reliability server and telecom power stages.

Availability

STPS20150CR is available at Aetrix Electronics and suitable for industrial AC/DC adapters, server power supplies, and LED driver power stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STPS20150CR 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 silicon solutions for automotive, industrial, and power management applications.

The STPS20150CR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency switch-mode power conversion where low conduction loss and thermal robustness are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS20150CR supports continuous operation with case temperature (T_C) up to 155 °C for each diode when delivering 10 A average forward current. This limit is defined in Table 1 of DS2252 and assumes proper heatsinking to maintain junction temperature below 175 °C under worst-case ambient and airflow conditions.

Is the metal tab electrically isolated in the I²PAK package?

No - the metal tab of the STPS20150CR in I²PAK is electrically connected to the common cathode terminal (Pin 2). It must be mounted on a non-isolated copper plane or insulated with a thermally conductive but electrically isolating pad if system grounding requires cathode-to-chassis isolation.

How does the center-tap configuration affect PCB layout compared to discrete diodes?

The integrated center-tap eliminates separate cathode routing between two diodes, reducing loop inductance by ~35% and simplifying thermal copper pour design. Layout requires only three pads: two anode lands and one large cathode/tab land - significantly lowering parasitic inductance in high-dI/dt SMPS outputs.

Can STPS20150CR replace standard PN-junction rectifiers in existing designs?

Yes - it can directly replace 150 V, 20 A dual diodes such as BYV26E or MUR1620CT, provided layout accommodates I²PAK footprint and thermal design accounts for lower VF (reduced heat) but higher leakage at elevated temperature. No gate drive or timing changes are needed since it is a passive rectifier.