Diodes Incorporated STPR1020CTW

Overview

STPR1020CTW from Diodes Incorporated is a superfast glass passivated rectifier diode rated for 200 V repetitive peak reverse voltage and 10 A average forward current, featuring 22 ns typical reverse recovery time and 0.94 V forward voltage at 5 A/25°C. It is AEC-Q101 qualified for automotive power conversion and used in high-efficiency AC-DC front-ends and DC-DC secondary-side rectification.

For engineers reviewing the STPR1020CTW datasheet, STPR1020CTW pinout, STPR1020CTW application, or STPR1020CTW equivalent, key selection criteria include reverse recovery time (trr ≤ 30 ns), thermal resistance (RΘJC = 4.2 °C/W), junction-to-case mounting torque (0.5 N·m), and AEC-Q101 Rev_C qualification status.

Technical Context

This device operates as a unidirectional silicon rectifier with superfast switching characteristics enabled by optimized epitaxial layer doping and glass passivation. Its 22–30 ns trr supports operation in 100 kHz–500 kHz SMPS topologies without significant switching loss penalties.

The TO-220AB package provides direct metal-to-heatsink thermal conduction via the case, with RΘJC = 4.2 °C/W enabling 10 A continuous operation when mounted to ≥50×50×2 mm copper plate. Junction temperature range spans −55°C to +150°C, supporting under-hood automotive environments.

Key Specifications

Pinout & Package

TO-220AB plastic package with three terminals: Anode (Pin 1), Cathode (Pin 2), and Case (Pin 3, electrically connected to cathode). Mounting hole centered on case; polarity marked on body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar superfast rectifier applications.

Compared with STTH10L06CW and DF10S06, STPR1020CTW offers optimal balance of 200 V rating, 22 ns trr, AEC-Q101 compliance, and TO-220AB thermal performance-making it preferred for cost-sensitive, thermally demanding automotive and industrial 12–48 V systems.

Availability

STPR1020CTW is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary rectification, and telecom AC-DC front-ends requiring stable component supply across multi-year production cycles.

Supply support for STPR1020CTW 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Malaysia.

STPR1020CTW belongs to Diodes' high-reliability superfast rectifier product line, engineered specifically for automotive and industrial power conversion where low trr, AEC-Q101 compliance, and robust thermal performance are mandatory.

FAQ

What is the maximum allowable case temperature for continuous 10 A operation?

Per FIG.1 Forward Current Derating Curve, STPR1020CTW delivers 10 A average forward current only when case temperature is maintained at or below 75°C. Above this temperature, current must be linearly derated to zero at 150°C case temperature. Heatsinking to a 50×50×2 mm copper plate enables full 10 A rating at ambient up to 60°C.

Is STPR1020CTW suitable for synchronous rectification replacement?

No-STPR1020CTW is a passive superfast rectifier diode, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively switched. However, its 22 ns trr and low VF make it a high-performance alternative to standard fast recovery diodes in quasi-resonant or fixed-frequency topologies where synchronous control is not implemented.

Does the TO-220AB case require insulating hardware when mounted to a heatsink?

Yes-the TO-220AB case (Pin 3) is electrically connected to the cathode (Pin 2). If the heatsink is grounded or at a different potential, an insulating washer and shoulder washer must be used to prevent short circuits. Diodes recommends using mica or ceramic isolators rated for ≥200 V and compatible with 0.5 N·m mounting torque.

How does AEC-Q101 qualification impact board-level reliability testing?

AEC-Q101 qualification confirms STPR1020CTW passed accelerated stress tests including HTGB (1000 hrs @ 150°C), TC (1000 cycles −55°C/+150°C), and HBM ESD (8 kV). This eliminates need for redundant board-level qualification of the diode itself-but system-level validation (e.g., thermal cycling, vibration, humidity) remains required per ISO/TS 16949 and OEM-specific standards.