Diodes Incorporated RS1AB-13-F

Overview

RS1AB-13-F from Diodes Incorporated is a surface-mount fast recovery rectifier diode in SMB package, rated for 100 V peak repetitive reverse voltage, 1.0 A average forward current, and 150 ns reverse recovery time. It features glass passivated die construction, 30 A non-repetitive surge capability, and RoHS-compliant lead-free finish - used in AC/DC input stage rectification for compact power adapters and industrial SMPS.

For engineers reviewing the RS1AB-13-F datasheet, RS1AB-13-F pinout, RS1AB-13-F application, or RS1AB-13-F equivalent, key selection criteria include its 100 V VRRM rating, low 1.3 V forward voltage at 1.0 A, 200 µA max reverse leakage at +125°C, fast 150 ns tRR, and SMB package thermal resistance of 20 °C/W - critical for high-efficiency, space-constrained rectifier designs.

Technical Context

This device operates as a unidirectional silicon PN junction rectifier optimized for high-frequency switching applications. Its fast recovery time (150 ns) minimizes switching losses during commutation, while glass passivation ensures stable junction performance under thermal cycling and humidity exposure.

The SMB package provides higher thermal dissipation than SMA (RθJT = 20 °C/W vs. ~25 °C/W), enabling sustained 1.0 A operation at terminal temperatures up to +120°C. Polarity is marked by a cathode band on the case body, consistent with industry-standard surface-mount diode orientation.

Key Specifications

Pinout & Package

SMB (DO-214AA) plastic molded package with matte tin–annealed copper alloy leads; cathode indicated by a visible band on the case body. Moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RS1AB-13-F, MUR110SFT1G offers superior switching speed for high-frequency efficiency, while VS-1EWH01-M3/5AT trades speed for AEC-Q101 qualification - making RS1AB-13-F the balanced choice for cost-sensitive industrial and consumer power supplies requiring proven thermal and surge performance.

Availability

RS1AB-13-F is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial SMPS inputs, LED driver secondary sides, and UPS battery charging circuits requiring stable component supply, consistent SMB packaging, and RoHS-3 compliance.

Supply support for RS1AB-13-F 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.

RS1AB-13-F belongs to the RS1x/B fast recovery rectifier product line, engineered for high-efficiency, surface-mount AC/DC conversion in space-constrained power supplies where thermal robustness and surge resilience are essential.

FAQ

What is the maximum junction temperature for RS1AB-13-F?

The absolute maximum junction temperature is +150°C, and the device is rated for continuous 1.0 A average forward current at terminal temperature (TT) of +120°C. Derating begins above +120°C per Figure 1 in DS15002 Rev. 15–2, with thermal resistance from junction to terminal specified as 20 °C/W under defined test conditions.

Is RS1AB-13-F compatible with lead-free reflow soldering processes?

Yes - RS1AB-13-F has a matte tin–annealed finish over copper alloy leadframe and is qualified for standard Pb-free reflow profiles (J-STD-020 Level 1). Its moisture sensitivity level is Class 1, eliminating bake requirements prior to assembly, and it meets IPC/JEDEC standards for solderability and intermetallic formation.

How does RS1AB-13-F differ from RS1A-13-F?

RS1AB-13-F uses the SMB (DO-214AA) package, whereas RS1A-13-F uses the smaller SMA (DO-214AC) package. Both share identical electrical specs (100 V VRRM, 1.0 A IO, 150 ns tRR), but RS1AB-13-F offers lower thermal resistance (20 °C/W vs. ~25 °C/W) and higher surge energy handling due to larger copper content and thermal mass in the SMB leadframe.

Can RS1AB-13-F be used in place of a Schottky diode?

No - RS1AB-13-F is a PN junction fast recovery diode, not a Schottky. It has higher forward voltage (1.3 V vs. typical 0.4–0.9 V) and slower recovery (150 ns vs. <10 ns), making it unsuitable for ultra-low VF or ultra-high-frequency (<1 MHz) applications. Use only where its 100 V rating, surge robustness, and cost advantage outweigh Schottky limitations.