Diodes Incorporated 1N5406-T

Overview

1N5406-T from Diodes Incorporated is a 3.0A, 600V peak repetitive reverse voltage 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 1N5406-T datasheet, 1N5406-T pinout, 1N5406-T application, or 1N5406-T equivalent, this device serves as a high-current, low-V_F axial-lead rectifier where ruggedness, thermal stability up to +150°C, and RoHS-compliant tin-plated leads are critical for industrial power conversion designs.

Technical Context

This device implements a diffused-junction silicon PN structure optimized for single-phase, half-wave rectification at 60Hz with resistive or inductive loads. It supports full-rated current only when leads are maintained at ambient temperature at ≥9.5mm from case per derating curve.

Thermal resistance is 15°C/W junction-to-ambient (unmounted), and total capacitance is 25pF at 1MHz/4V reverse bias. Capacitive load operation requires 20% forward current derating per specification.

Key Specifications

Pinout & Package

DO-201AD molded plastic package with axial leads; cathode identified by band marking; tin-plated leads solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5406G, the 1N5406-T offers lower forward voltage and tighter leakage spec; versus GBU6K, it provides smaller footprint and lower cost for half-wave or discrete freewheeling use, but lacks bridge integration.

Availability

1N5406-T is available at Aetrix Electronics and suitable for AC/DC power supplies, battery chargers, and industrial control panels requiring stable component supply and long-lifecycle support.

Supply support for 1N5406-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, with design and manufacturing operations across Asia and the Americas.

The S3A–S3M series, including 1N5406-T, was engineered for cost-effective, high-reliability line-frequency rectification in industrial, consumer, and computing power systems.

FAQ

Is 1N5406-T suitable for capacitive-input filter applications?

Yes, but with mandatory 20% forward current derating per datasheet Note. At full 3.0A rated current, capacitive loading reduces effective I_O to 2.4A to prevent overheating and premature failure due to increased RMS current stress.

What is the maximum allowable PCB trace length from case to ambient for thermal compliance?

Leads must be kept at ambient temperature at a distance of ≥9.5 mm from the DO-201AD case per Note 1. Longer traces or copper pours beyond this point do not improve thermal performance and may compromise mechanical reliability.

Does 1N5406-T meet lead-free assembly requirements?

Yes - it features RoHS-compliant tin-plated leads per EU Directive Annex Notes 5 and 7, with exemptions for glass and high-temperature solder. It passes MIL-STD-202 Method 208 solderability testing and supports lead-free reflow profiles.

Can 1N5406-T replace 1N5408 in a 1000V design?

No - 1N5406-T has 600V V_RRM, while 1N5408 specifies 1000V. Substituting it in a 1000V circuit risks reverse breakdown, catastrophic failure, and safety hazards. Always match V_RRM to worst-case transient voltage plus margin.