Diodes Incorporated 1N5400-T

Overview

1N5400-T from Diodes Incorporated is a 3.0A, 50V general-purpose silicon rectifier diode in DO-201AD package, featuring 1.0V forward voltage at 3.0A, 200A non-repetitive surge capability, and low 10µA reverse leakage at 25°C - used in AC/DC power supplies, battery chargers, and DC motor control circuits.

For engineers reviewing the 1N5400-T datasheet, 1N5400-T pinout, 1N5400-T application, or 1N5400-T equivalent, key selection criteria include peak repetitive reverse voltage (50V), average forward current derating above 105°C, thermal resistance (15°C/W), and DO-201AD mechanical compatibility with high-current PCB layouts.

Technical Context

This axial-lead rectifier operates in single-phase, half-wave configurations with resistive or inductive loads at 60Hz; capacitive loads require 20% current derating. Its diffused junction enables stable conduction under thermal stress up to +150°C junction temperature.

Designed for line-frequency rectification, it delivers 3.0A average output current when leads are maintained at ambient temperature within 9.5mm of the case, and exhibits 50pF typical junction capacitance at 1MHz and 4V reverse bias.

Key Specifications

Pinout & Package

Package: DO-201AD molded plastic case (UL 94V-0), axial-leaded, cathode indicated by band, weight ≈1.1 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5400G, the 1N5400-T offers identical performance in same package; RS305 trades axial-mount convenience for higher thermal capacity at cost of mechanical redesign and added assembly steps.

Availability

1N5400-T is available at Aetrix Electronics and suitable for AC/DC power supplies, battery chargers, and industrial control systems requiring stable component supply and long-term obsolescence management.

Supply support for 1N5400-T 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, serving industrial, computing, consumer, and communications markets.

The S3A–S3M series, including 1N5400-T, was engineered for cost-sensitive, high-volume line-frequency rectification with emphasis on surge resilience and thermal stability in unregulated power stages.

FAQ

Is 1N5400-T suitable for switching power supply output rectification?

No. The 1N5400-T is optimized for 50/60Hz line-frequency rectification, not high-frequency SMPS operation. Its 50pF junction capacitance and relatively slow reverse recovery (not specified, but typical of general-purpose rectifiers) cause excessive switching losses above 20kHz, leading to overheating and reduced efficiency.

What is the maximum allowable ambient temperature for continuous 3.0A operation?

Continuous 3.0A operation is rated only at TA = 105°C, provided leads are held at ambient temperature within 9.5mm of the case. Above 105°C, current must be derated per Figure 1 - e.g., ~2.2A at 125°C ambient, ~1.3A at 150°C ambient.

Does 1N5400-T have a specified reverse recovery time (trr)?

No. The datasheet does not specify reverse recovery time, confirming its classification as a general-purpose rectifier rather than a fast-recovery or ultrafast diode. It is not characterized for use in circuits requiring controlled turn-off behavior or high di/dt conditions.

Can 1N5400-T replace 1N4007 in existing designs?

Only with caution: 1N5400-T has lower VRRM (50V vs. 1000V) and higher forward current (3.0A vs. 1.0A). It may be substituted only if the circuit's peak reverse voltage never exceeds 50V and thermal design accommodates higher conduction loss - otherwise risk of catastrophic failure exists.