Diodes Incorporated FR803

Overview

FR803 from ON Semiconductor is an 8.0A fast recovery rectifier diode in TO-220A package, rated for 200 V recurrent peak reverse voltage (VRRM), 1.3 V forward voltage at 8.0 A DC, and 150 ns reverse recovery time (Trr); used in high-efficiency AC/DC front-end rectification for industrial power supplies and motor drive inverters.

For engineers reviewing the FR803 datasheet, FR803 pinout, FR803 application, or FR803 equivalent, key selection criteria include its low Trr (150 ns), low IR (10 µA @ 25°C), high IFSM (150 A), TO-220A thermal performance, and compatibility with 60 Hz single-phase half-wave resistive/inductive loads.

Technical Context

This device operates as a unidirectional silicon junction rectifier optimized for fast switching in line-frequency and moderate-frequency power conversion. Its 150 ns reverse recovery time enables reduced switching losses compared to standard recovery diodes, while the 70 pF junction capacitance at 4.0 V reverse bias supports predictable high-frequency behavior in snubberless designs.

The TO-220A package provides direct case-to-heatsink thermal path with axial plated leads compliant to MIL-STD-202 Method 208. Polarity is defined by Pin 1 (+) and Pin 2 (–), with case electrically isolated and non-conductive per UL 94V-0 molded plastic construction.

Key Specifications

Pinout & Package

Package: TO-220A - Molded plastic case with isolated metal tab, axial plated leads, UL 94V-0 flammability rating, 2.24 g weight, mountable in any orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8R02DJ and VS-8EWH02FN-M3, the FR803 delivers optimal balance of low-cost, isolated-case reliability, and proven 150 ns Trr performance for industrial 50/60 Hz rectification-without over-specifying for automotive or ultra-high-frequency needs.

Availability

FR803 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive input rectification, and uninterruptible power systems requiring stable component supply and long-term manufacturing continuity.

Supply support for FR803 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

ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and logic solutions for automotive, industrial, and cloud power applications.

The FR801–FR805 series belongs to ON Semiconductor's fast recovery rectifier product line, designed specifically for high-current, low-loss line-frequency rectification in cost-sensitive industrial power systems.

FAQ

Is the FR803 case electrically connected to the semiconductor die?

No. The FR803 uses a TO-220A package with fully isolated plastic case and non-conductive housing. Pin 1 (anode) and Pin 2 (cathode) are the only electrical terminals; the case has no internal electrical connection and may be mounted directly to a heatsink without insulation.

What is the maximum allowable case temperature for continuous operation?

The FR803 is rated for continuous operation at I(AV) = 8.0 A only when the case temperature (TC) is maintained at ≤100°C, as defined in the derating curve (Figure 1). Exceeding 100°C requires proportional current reduction; absolute maximum TJ is 175°C.

Can FR803 replace a standard recovery rectifier like 1N5408 in a 60 Hz power supply?

Yes, but with design impact: FR803's 150 ns Trr reduces reverse recovery loss and EMI versus 1N5408's ~2 µs Trr, yet its VF (1.3 V) is comparable. Thermal design must account for identical I(AV) rating, but layout should minimize parasitic inductance to avoid voltage overshoot during fast turn-off.

Does FR803 meet RoHS and REACH compliance?

Yes. FR803 is manufactured per ON Semiconductor's standard RoHS-compliant process (Pb-free, halogen-free) and meets REACH SVHC thresholds. Full compliance documentation-including material declarations and test reports-is available via ON Semiconductor's official product page for DS26005.