Diodes Incorporated STPR1660

Overview

STPR1660 from Diodes Incorporated is a 16A dual-leg super-fast rectifier diode in TO220AB package, rated for 600V peak reverse voltage, 1.5V forward voltage at 8A/25°C, and 50ns reverse recovery time. It serves as the primary output rectifier in high-frequency switched-mode power supplies and DC-DC converters where low conduction loss and fast switching are critical.

For engineers reviewing the STPR1660 datasheet, STPR1660 pinout, STPR1660 application, or STPR1660 equivalent, key selection criteria include its 600V V_RRM, 16A total average output current capability, 50ns t_RR, low 10µA reverse leakage at 25°C, and TO220AB thermal performance with R_θJC = 2°C/W when mounted on a 100mm × 100mm copper heatsink.

Technical Context

The STPR1660 integrates two independent super-fast rectifying legs in a single TO220AB package, each rated for 8A average forward current and sharing a common cathode configuration. Its glass-passivated die construction ensures stable operation under repetitive surge conditions up to 100A (8.3ms half-sine).

Designed for high-frequency operation, it achieves 50ns reverse recovery time under IF = 0.5A / IR = 1.0A / IRR = 0.25A test conditions, minimizing switching losses in 100kHz–500kHz SMPS topologies. Thermal resistance of 2°C/W (junction-to-case) enables efficient heat transfer to external heatsinks without derating below 125°C junction temperature.

Key Specifications

Pinout & Package

Package: TO220AB (Type WX), molded plastic with matte tin-plated leads, UL 94V-0 rated, 2.0275g weight. Common-cathode dual-diode configuration with three terminals: Anode 1 (Pin 1), Anode 2 (Pin 2), Cathode (Pin 3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1606D and DF1606S, the STPR1660 delivers superior switching speed (50ns vs. ≥65ns) and lower thermal resistance (2°C/W vs. ≥2.5°C/W), making it optimal for high-density, high-frequency power conversion where efficiency and thermal headroom are constrained.

Availability

STPR1660 is available at Aetrix Electronics and suitable for switched-mode power supplies, high-frequency DC-DC converters, and LED driver power stages requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for STPR1660 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, manufacturing, and sales operations across Asia, Europe, and North America.

The STPR series targets high-reliability power rectification in industrial, computing, and automotive auxiliary systems, emphasizing fast recovery, low leakage, and robust thermal performance in standard through-hole packages.

FAQ

Is the STPR1660 suitable for surface-mount assembly?

No. The STPR1660 uses a TO220AB through-hole package with three leads designed for vertical mounting and mechanical retention via screw or clip. It lacks SMD-compatible terminations or thermal pad geometry, and its 2.0275g mass exceeds typical reflow handling limits for automated placement.

What is the maximum junction temperature during continuous 16A operation?

At 16A average current and R_θJC = 2°C/W, junction temperature rise above case is 32°C. With case temperature maintained ≤118°C (e.g., via heatsink), T_J remains within the rated -55°C to +150°C range. Derating is required above 125°C case temperature per Fig. 1 in DS44831.

Does the STPR1660 meet AEC-Q101 for automotive use?

No. While Diodes offers AEC-Q101-qualified rectifiers (e.g., SBxx series), the STPR1660 is not certified to AEC-Q101. Its datasheet explicitly states automotive qualification requires separate PPAP-capable parts-this device is intended for industrial and commercial power applications only.

Can the STPR1660 replace a single 8A rectifier in a non-dual design?

Yes, but only one leg should be used: connect Pin 1 (A1) as anode, Pin 3 (K) as cathode, and leave Pin 2 (A2) unconnected and insulated. The unused leg introduces negligible parasitic capacitance (<5pF) and does not affect forward conduction or thermal behavior of the active path.