1N5309 TR PBFREE

Overview

The 1N5309 TR PBFREE is a silicon rectifier diode manufactured by Central Semiconductor Corp. It utilizes a DO-41 axial leaded package and is designed for general-purpose rectification applications. The device features a maximum average forward rectified current of 1.0 A and a repetitive peak reverse voltage rating of 200 V. Key electrical parameters include a maximum RMS voltage of 140 V, a maximum DC blocking voltage of 200 V, and a maximum non-repetitive peak forward surge current capability of 30 A at 8.3 ms single half-sine-wave. The component operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• High thermal stability with an extended operating junction temperature range up to 175°C
• Robust surge current handling capability for transient protection in power circuits
• Standardized DO-41 axial package facilitates through-hole mounting on printed circuit boards

Applications

• General-purpose rectification in AC-to-DC power supply circuits
• Polarity protection in electronic equipment power inputs
• Freewheeling diodes in inductive load switching applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure that the procurement request explicitly states the requirement for lead-free (Pb-free) compliance to match the TR PBFREE designation. Cross-reference the manufacturer part number with distributor catalogs to confirm availability status and verify that the component meets current RoHS directives before finalizing purchase orders.

Selection Notes

Select this component when a standard 1A silicon rectifier with a 200V reverse voltage rating is required for through-hole assembly. The high junction temperature rating makes it suitable for environments with elevated ambient temperatures where standard 150°C rated diodes may fail. Consider the physical dimensions of the DO-41 package during PCB layout to ensure adequate clearance for leads and body.

Part Context

This component belongs to the 1N53xx series of glass-passivated silicon rectifiers produced by Central Semiconductor. The series is characterized by high reliability and consistent performance in industrial and commercial electronics. The 1N5309 variant specifically addresses applications requiring moderate current handling with a 200V blocking capability, serving as a direct replacement for legacy components in established designs.

Replacement Considerations

Direct replacements must maintain the 1.0A forward current and 200V reverse voltage ratings. Verify that substitute parts offer equivalent or superior surge current capabilities and operate within the same temperature range. Ensure the alternative component utilizes a compatible DO-41 or equivalent axial package for mechanical interchangeability.