Diodes Incorporated 1N5397S-T

Overview

1N5397S-T from Diodes Incorporated is a 1.5A, 600V peak repetitive reverse voltage general-purpose silicon rectifier diode in DO-41 package, featuring 1.1V forward voltage drop at 1.5A, 50A non-repetitive surge rating, and 5.0μA reverse leakage at 25°C, used in AC/DC power supplies and input rectification stages of industrial power adapters.

For engineers reviewing the 1N5397S-T datasheet, 1N5397S-T pinout, 1N5397S-T application, or 1N5397S-T equivalent, key selection criteria include VRRM=600V, IO=1.5A @ TA=70°C, VF=1.1V @ IF=1.5A, IRM=5.0μA @ VR=600V, and DO-41 mechanical compatibility with through-hole PCB layouts.

Technical Context

This device operates as a single-phase, half-wave rectifier under 60Hz resistive or inductive loads, with thermal resistance RθJA=55°C/W and RθJL=25°C/W, enabling reliable operation up to +150°C junction temperature. Derating begins above 70°C ambient per Fig. 1.

Capacitance is characterized at 1.0MHz and 4.0V reverse bias (CT=20pF), and surge capability is validated for 8.3ms half-sine wave events (IFSM=50A), supporting transient-limited line-input designs.

Key Specifications

Pinout & Package

DO-41 molded plastic package with axial leads; cathode identified by band marking; RoHS-compliant tin finish; UL 94V-0 flammability rating; moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4007-T and 1N5408-T, the 1N5397S-T offers optimal balance of 600V blocking, 1.5A continuous rating, and DO-41 footprint-making it ideal for space-constrained 1.2–1.5A industrial and consumer power inputs where 1000V rating is unnecessary.

Availability

1N5397S-T is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial control systems, and LED driver input stages requiring stable component supply and long-term manufacturability assurance.

Supply support for 1N5397S-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, specializing in high-reliability power management, signal integrity, and protection solutions.

The 1N539x/S series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, thermally robust AC line rectification in high-volume industrial and consumer power applications.

FAQ

Is 1N5397S-T suitable for use in bridge rectifier configurations?

Yes, 1N5397S-T is commonly used as one leg of a discrete full-wave bridge rectifier. Its 600V VRRM, 1.5A IO rating, and 50A IFSM make it appropriate for 230VAC input bridges driving moderate loads. Ensure all four diodes share identical specifications and thermal mounting conditions to avoid current imbalance.

What is the maximum allowable PCB trace width for 1.5A continuous current with 1N5397S-T?

For 1.5A continuous current on external PCB traces, a minimum 15-mil (0.38 mm) copper width with 1oz copper weight is recommended. Internal layer traces should be ≥20 mil. Thermal relief to pads and adequate copper pour around cathode/anode pads improve heat spreading, especially given RθJA=55°C/W.

Does 1N5397S-T require heatsinking in typical applications?

No dedicated heatsink is required for 1N5397S-T at ≤1.5A and TA≤70°C, provided PCB copper area acts as thermal mass. At full load and elevated ambient, doubling pad copper area or adding thermal vias to inner ground planes reduces junction temperature rise by 10–15°C, staying within the +150°C limit.

Can 1N5397S-T replace 1N5397-B in existing designs?

Yes-1N5397S-T and 1N5397-B share identical electrical specs and DO-41 package; only packaging differs (tape-and-reel vs. bulk). Pinout, thermal behavior, and soldering profile are identical. No layout or firmware changes are needed; verify reel orientation and pick-and-place settings for automated assembly.