Diodes Incorporated FR1A-13

Overview

FR1A-13 from Diodes Incorporated is a glass-passivated fast recovery rectifier diode in SMB package, rated for 50 V maximum recurrent peak reverse voltage (V_RRM), 1.0 A average forward rectified current at 75°C (I_AV), and 150 ns reverse recovery time (t_rr), used in AC/DC input stage rectification for compact power adapters and auxiliary power supplies.

For engineers reviewing the FR1A-13 datasheet, FR1A-13 pinout, FR1A-13 application, or FR1A-13 equivalent, key selection criteria include verified t_rr ≤ 150 ns at I_F = 0.5 A, V_F ≤ 1.3 V at 1.0 A, thermal resistance R_JL = 30 °C/W, and SMB surface-mount compatibility with 265°C solder bath tolerance.

Technical Context

This device implements a planar epitaxial silicon junction with glass passivation to suppress surface leakage and enhance reliability under thermal cycling. Its fast recovery behavior stems from controlled carrier lifetime reduction, enabling efficient operation in 50–100 kHz switching converters without snubber circuits.

The SMB package provides defined thermal path to PCB copper pads (6.0 mm²), supporting 1.0 A continuous conduction while maintaining junction temperature below 175°C under specified ambient and derating conditions per Fig. 1.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, cathode-banded end, UL 94V-0 molded plastic case, 0.093 g typical weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RS1AB-13 and ES1B-13, FR1A-13 offers optimal balance of surge robustness (30 A), thermal margin (75°C rating), and cost-effective glass passivation-making it preferred for cost-sensitive, thermally constrained 50–100 kHz adapter designs.

Availability

FR1A-13 is available at Aetrix Electronics and suitable for AC/DC wall adapters, USB PD auxiliary supplies, and industrial sensor power modules requiring stable component supply and long-lifecycle support.

Supply support for FR1A-13 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-reliability power, signal, and protection solutions for industrial, computing, and consumer markets.

The FR1A-FR1M series was designed specifically for cost-optimized, surface-mount fast recovery rectification in space-constrained offline power supplies operating up to 100 kHz.

FAQ

What is the maximum allowable junction temperature for FR1A-13?

The absolute maximum junction temperature (T_J) is +175°C, with continuous operation limited by thermal derating: at T_A = 75°C, I_AV = 1.0 A is permitted; above that, current must be reduced per Fig. 1. Operation beyond 175°C risks permanent parametric shift or metallization failure.

Is FR1A-13 suitable for synchronous rectification topologies?

No-FR1A-13 is a passive diode and cannot be actively controlled. It is intended for non-synchronous rectification. For synchronous designs, discrete MOSFETs or integrated synchronous rectifier controllers (e.g., AP3410, MP6908) must be used instead.

Does FR1A-13 meet RoHS and REACH compliance?

Yes-FR1A-13 is RoHS 2011/65/EU compliant and REACH SVHC-free per Diodes Incorporated's material declarations (Pub. #DIO-ROHS-REACH-2023). Lead-free soldering is supported per J-STD-020 Rev. E.

Can FR1A-13 replace FR1B-13 in a 100 V design?

No-FR1A-13 has V_RRM = 50 V and will experience avalanche breakdown if subjected to >50 V reverse voltage. FR1B-13 (V_RRM = 100 V) is required for 100 V designs; substitution violates maximum ratings and compromises safety and reliability.