Diodes Incorporated STPS1020

Overview

STPS1020 from Diodes Incorporated is a 10A dual common-cathode super-fast rectifier diode rated for 200V peak reverse voltage, with typical forward voltage of 1.10 V at 5 A and 25°C, reverse leakage current ≤10 µA at 200 V and 25°C, and reverse recovery time of 30 ns-designed for high-frequency DC-DC converters in server power supplies.

For engineers reviewing the STPS1020 datasheet, STPS1020 pinout, STPS1020 application, or STPS1020 equivalent, key selection criteria include its ITO220AB package thermal resistance (R_θJC = 5°C/W), 80 A non-repetitive surge rating, and low capacitance (45 pF) enabling efficient high-switching-frequency operation.

Technical Context

This dual-diode configuration shares a common cathode terminal and operates as a synchronous rectification pair in center-tapped or full-wave topologies. Its glass-passivated die construction ensures stable junction behavior under thermal cycling and high dv/dt stress.

The device delivers fast switching via low stored charge (Q_rr implied by t_RR = 30 ns), supports continuous 5 A per leg at T_C = 110°C, and maintains <0.25 µA reverse leakage at 100°C-critical for maintaining efficiency in compact, thermally constrained SMPS designs.

Key Specifications

Pinout & Package

Package: ITO220AB (Type WX2), molded plastic with matte tin-plated leads, UL 94V-0 rated, 1.558 g weight. Mounting requires heatsink contact on metal tab (cathode-connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual common-cathode super-fast rectifier applications.

Compared with STTH10L06D and MBR10200CT, STPS1020 offers optimal balance of speed (30 ns), leakage control (<10 µA), and thermal performance (5°C/W) for high-efficiency, high-temperature secondary rectification-making it preferred for 50–100 W server and industrial DC-DC outputs.

Availability

STPS1020 is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, automotive auxiliary supplies, and LED driver power stages requiring stable component supply and long-term manufacturability.

Supply support for STPS1020 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.

The STPS series targets high-frequency power conversion with optimized trade-offs between forward voltage, recovery speed, and thermal resistance-specifically engineered for next-generation SMPS and DC-DC modules demanding >94% efficiency.

FAQ

Is STPS1020 suitable for synchronous rectification drive circuits?

No-STPS1020 is a passive silicon rectifier diode, not a MOSFET-based synchronous rectifier. It lacks gate terminals and cannot be actively controlled. It functions as a self-commutating device relying on forward bias and reverse recovery characteristics, making it appropriate for diode-rectified topologies only.

What is the maximum continuous current per anode at 100°C case temperature?

At T_C = 100°C, the derated average output current per leg is approximately 3.2 A, based on the forward current derating curve in DS43754 Rev. 4–2 Figure 1. This reflects thermal limitation-not electrical saturation-and assumes proper heatsinking per JESD-51 test conditions.

Can STPS1020 replace a single 10 A Schottky diode in a full-wave bridge?

No-it is a dual common-cathode diode (two anodes, one shared cathode), not a full-bridge configuration. To replace a full-wave bridge, two STPS1020 units would be needed (one for each half-bridge leg), or a dedicated 4-terminal bridge rectifier must be used instead.

Does STPS1020 meet AEC-Q101 for automotive under-hood use?

No-the datasheet explicitly states that STPS1020 is commercial-grade; automotive-qualified variants require explicit AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing-none of which apply to this part number without special ordering codes or suffixes.