1N4735P/TR8

Overview

The Microchip Technology 1N4735P/TR8 is a silicon planar Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 6.2 V and a standard tolerance of ±5%. The device dissipates 1.0 W at 25°C and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a test current of 41 mA, a maximum dynamic impedance of 2 Ohms, and a maximum reverse current of 10 µA. The component is supplied in tape and reel packaging.

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
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify that the ordering suffix matches the required configuration, as specific identifiers denote package type or screening level. Confirm RoHS compliance status if lead-free materials are mandated for the assembly process. Ensure the procurement quantity aligns with the manufacturer's standard tape and reel packaging requirements. Cross-reference the part number against the latest datasheet to confirm active manufacturing status and availability.

Selection Notes

Select this component when a 6.2 V reference with ±5% tolerance is required in an axial-lead package. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1.0 W power dissipation limit and derating curves for high-temperature environments. Verify that the 41 mA test current requirement fits the circuit design constraints.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of 1.0 Watt Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix indicates plastic encapsulation, while the 'TR' suffix denotes tape and reel packaging. These devices are JEDEC registered and offer extensive voltage selection for general-purpose regulation tasks.

Replacement Considerations

Surface mount equivalents are available as SMAJ4735A or MLL4735A. Glass-body versions exist with the 'G' suffix. Military screening levels can be obtained by adding prefixes such as MQ, MX, MV, or MSP.