Diodes Incorporated FR1J-13

Overview

FR1J-13 from Diodes Incorporated is a glass passivated fast recovery rectifier diode rated for 600 V maximum recurrent peak reverse voltage, 1.0 A average forward rectified current at 75°C, and 150 ns reverse recovery time; it delivers low forward voltage drop (1.3 V @ 1.0 A) and operates from –65°C to +175°C, used in AC/DC input stage rectification of industrial power supplies and LED drivers.

For engineers reviewing the FR1J-13 datasheet, FR1J-13 pinout, FR1J-13 application, or FR1J-13 equivalent, key selection criteria include its 600 V V_RRM, 150 ns t_rr, SMB package thermal resistance (30°C/W), junction capacitance (15 pF), and compliance with MIL-STD-19500 high-reliability standards for surface-mount power conversion designs.

Technical Context

This device is a single-junction, planar, glass-passivated silicon rectifier optimized for fast switching in line-frequency and moderate-frequency (≤100 kHz) AC/DC front-end applications. Its 150 ns reverse recovery time and 1.3 V forward voltage at 1.0 A reflect a balanced trade-off between switching loss and conduction loss.

The SMB package provides mechanical robustness and thermal performance suitable for reflow soldering (265°C/10 s), with polarity indicated by a cathode band and thermal resistance of 30°C/W (junction-to-lead, 6.0 mm² copper pad). It is not recommended for new designs per Diodes Inc.'s DS15003 Rev. 5 notice.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, molded plastic case with cathode band marking; terminals are solderable per MIL-STD-202, Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FR1J-13, RS1J-13 trades speed for lower cost in low-frequency rectification, while ES1J-13 extends current and surge capability within the same SMB footprint-enabling drop-in thermal or reliability upgrades without redesign.

Availability

FR1J-13 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver bulk rectification, and high-reliability UPS charger inputs requiring stable component supply and traceable sourcing.

Supply support for FR1J-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the US.

The FR1x series belongs to Diodes' legacy fast recovery rectifier product line, designed specifically for cost-sensitive, high-volume AC/DC front-end rectification where reliability and manufacturability are prioritized over ultra-fast switching.

FAQ

Is FR1J-13 RoHS compliant and halogen-free?

Yes. FR1J-13 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, with lead-free matte tin plating on terminals and compliant molding compound. Certificate of Compliance is available upon request from Diodes Incorporated's quality portal.

What is the maximum allowable PCB pad size for optimal thermal performance?

For minimum R_θJL of 30°C/W, Diodes specifies a 6.0 mm² copper pad area per lead (anode and cathode) on the primary side of the PCB. Larger pads improve thermal dissipation but do not reduce R_θJL below the specified value unless internal thermal vias are added.

Can FR1J-13 be used in synchronous rectification topologies?

No. FR1J-13 is a unidirectional, non-controlled PN-junction diode with fixed forward voltage and recovery behavior. It lacks gate control and cannot replace MOSFETs in synchronous rectification; use dedicated SR controllers and logic-level FETs instead.

Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?

Diodes Incorporated issued this notice in DS15003 Rev. 5 because the FR1x series has been superseded by the RS1x and ES1x families, which offer improved t_rr, lower V_F, and enhanced surge ratings. FR1J-13 remains fully supported for existing production and legacy repair, but new designs should evaluate RS1J-13 or ES1J-13.