1N4736CP/TR12

Overview

The Microchip Technology 1N4736CP/TR12 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial lead package. It provides voltage regulation with a nominal Zener voltage of 6.8 V and a tight tolerance of ±2%. The device operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 10 µA at the test voltage and a dynamic impedance of 3.5 Ω at a test current of 37 mA. It is supplied in tape and reel packaging.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Offers flexible axial-lead mounting terminals for standard through-hole applications.
• Operates reliably over a broad temperature range from -65°C to +150°C.

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in power supply inputs
• Clamping applications in signal processing paths

Procurement Notes

Verify that the specific part number includes the required suffixes for RoHS compliance (e3) and tape and reel packaging (TR). Confirm the manufacturer origin, as this component family was originally Microsemi and is now under Microchip Technology. Ensure the procurement documentation matches the exact JEDEC registration and screening level requirements for your design.

Selection Notes

Select this component when a 6.8 V regulation point with high precision is needed. The ±2% tolerance makes it suitable for applications where standard 5% or 10% variations are unacceptable. Consider the 1 W power dissipation rating and thermal resistance characteristics for heat management in the final assembly environment.

Part Context

This component belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes. The 'C' suffix specifically denotes the tighter ±2% voltage tolerance compared to the standard 'A' suffix (±5%) or no suffix (±10%). The 'P' indicates plastic construction, which offers lower thermal resistance than glass-body options.

Replacement Considerations

Direct substitutes include other 1N4736 variants with matching electrical specifications. Check if the application requires the specific ±2% tolerance; otherwise, 1N4736A (±5%) or 1N4736 (±10%) may be compatible. Surface mount equivalents like SMAJ4736A are available but require different footprint considerations.