Diodes Incorporated SBL1660

Overview

SBL1660 from Diodes Incorporated is a 16A, 60V Schottky barrier rectifier in TO-220AC package, designed for low-voltage, high-frequency power conversion circuits including freewheeling diodes in DC-DC converters and polarity protection in automotive power supplies. It features 0.75V forward voltage at 16A/25°C, 275A non-repetitive surge capability, and 3.5°C/W junction-to-case thermal resistance.

For engineers reviewing the SBL1660 datasheet, SBL1660 pinout, SBL1660 application, or SBL1660 equivalent, key selection criteria include its 60V blocking rating, low V_F at high current, TO-220AC thermal performance, and suitability for 100kHz+ switching topologies where conduction loss minimization is critical.

Technical Context

This discrete Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress leakage under high dv/dt conditions. Its low forward voltage drop and high surge rating make it suitable for high-efficiency flyback and synchronous rectification auxiliary paths.

The device operates across –65°C to +150°C with 700pF junction capacitance at 4V reverse bias, enabling stable performance in high-frequency inverters and battery-powered systems requiring fast recovery without reverse recovery charge.

Key Specifications

Pinout & Package

Package: TO-220AC - Molded plastic case with UL 94V-0 flammability rating, tin-plated terminals, and integral metal tab for heatsink mounting. Pin 1 (anode) and Pin 2 (cathode) are electrically isolated from the case; case is connected to cathode (Pin 2).

Key Features

Applications

Availability

SBL1660 is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, telecom power shelves, and LED driver power supplies requiring stable component supply and long-term production continuity.

Supply support for SBL1660 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 and manufacturing operations across Asia and the Americas.

The SBL16xx series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical, high-reliability power conversion in automotive, industrial, and telecom infrastructure applications.

FAQ

Is SBL1660 RoHS compliant and lead-free?

Yes. SBL1660 features a lead-free, tin-plated finish compliant with RoHS Directive 2011/65/EU (Revision 13.2.2003), including exemptions for glass and high-temperature solder per Annex Notes 5 and 7. Terminal finish meets MIL-STD-202, Method 208 for solderability.

What is the maximum junction temperature and how does it affect derating?

The SBL1660 has an operating junction temperature range of –65°C to +150°C. At case temperatures above 95°C, average forward current must be linearly derated to zero at 150°C, as shown in Figure 1 of the datasheet. Derating ensures thermal stability under sustained high-load conditions.

Can SBL1660 be used in place of a standard PN junction rectifier?

Yes, but only where low forward voltage and fast switching are required. Unlike PN rectifiers, SBL1660 has no reverse recovery time or Q_rr, eliminating switching losses. However, its higher reverse leakage (50mA at 100°C) requires verification in high-impedance hold-up circuits.

Why is SBL1660 marked "Not Recommended for New Design"?

Diodes Incorporated issued this notice due to newer-generation Schottky devices offering lower V_F, improved thermal resistance, or enhanced surge robustness. SBL1660 remains fully qualified and supported for existing designs and legacy production, with no announced obsolescence date.