1N4736APE3/TR8

Overview

The Microchip Technology 1N4736APE3/TR8 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial lead package. It provides voltage regulation at a nominal Zener voltage of 6.8 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a maximum reverse current of 10 µA at the test voltage. Electrical characteristics include a dynamic impedance of 3.5 Ω at a test current of 37 mA, a forward voltage of 1.2 V maximum at 200 mA, and a steady-state power dissipation of 1.0 W.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• General voltage regulation circuits
• Voltage reference functions
• Over-voltage protection

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'P' suffix indicates plastic construction, while 'e3' confirms RoHS compliance. The 'TR' suffix denotes tape and reel packaging. Confirm the specific tolerance requirements, as the 'A' suffix typically corresponds to a 5% voltage tolerance. Ensure the procurement documentation aligns with the manufacturer's JEDEC registration data.

Selection Notes

Select this component when a 6.8 V regulation point is required with a 1.0 W power rating. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the ±5% tolerance if tighter precision is not critical. Verify compatibility with the intended PCB layout regarding the axial lead dimensions and spacing requirements for the chosen mounting style.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 V to 100 V. These devices are JEDEC registered and available in various screening levels. The plastic encapsulated version provides moisture classification Level 1 without requiring dry pack storage.

Replacement Considerations

Equivalent parts include other 1N4736 variants such as 1N4736A or 1N4736G, noting differences in package material and tolerance. Surface mount equivalents like SMAJ4736A or MLL4736A may be used if footprint adaptation is permitted.