3 A, 400 V standard recovery rectifier — what it is for
The GI504-E3/54: The GI504-/54: The Vishay GI504-/54 is a general-purpose standard recovery diode rated for 400 V reverse voltage and 3 A average rectified current, housed in a DO-201AD axial-lead package. With a reverse recovery time of 2 µs, it is designed for 50/60 Hz line-frequency rectification — think bulk power supplies, battery chargers, and AC-input bridge rectifiers where switching speed is not the constraint.
The 400 V Vr(max) covers single-phase 240 VAC rectification with margin — the peak reverse voltage on a 240 VAC line is about 340 V, so this diode gives roughly 18 % headroom before derating. The 3 A continuous forward current is the average over a full cycle; in a bridge configuration each diode conducts half the time, so a 3 A bridge can deliver about 1.5 A DC to the load. Forward voltage is specified at 1.1 V typical at 9.4 A pulsed. The 5 µA reverse leakage at 400 V is low enough that standby losses are negligible. Standard recovery (trr = 2 µs) means this part will not work in a high-frequency SMPS — the stored charge during reverse recovery would cause excessive switching losses and possible thermal runaway above a few kilohertz. Stick to line-frequency or low-speed rectification.
Package and mounting — field-service friendly
The DO-201AD axial package is through-hole with leads easy to hand-solder, rework, or replace on site. The junction temperature range of -50 °C to 150 °C covers industrial and outdoor equipment enclosures.
Sourcing and lifecycle posture
ROHS3 compliant.