1N4750CP/TR8

Overview

The Microchip Technology 1N4750CP/TR8 is a silicon 1.0-watt Zener diode in the JEDEC registered 1N4728A to 1N4764A series, housed in a plastic DO-41 (DO-204AL) package with axial leads. It provides voltage regulation at a nominal Zener voltage of 27V with a tight tolerance of plus or minus 2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 35 ohms at a test current of 9.5 mA. The 'TR' suffix denotes tape and reel packaging compliant with EIA-296 standards.

Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance for stable reference applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability ratings
• Features flexible axial-lead mounting terminals solderable per MIL-STD-750 method 2026
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in electronic circuits
• Protection against voltage transients and spikes

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'C' confirms the 2% voltage tolerance, and 'TR' specifies tape and reel packaging. Confirm RoHS compliance status if applicable, as standard versions may differ from those with an 'e3' suffix. Ensure the manufacturer source aligns with Microsemi or its successor entity for accurate datasheet references.

Selection Notes

Select this component when a 27V Zener voltage with high precision is required in a through-hole axial lead format. The 1W power dissipation rating supports steady-state operation up to specific thermal limits. Consider the 35 ohm dynamic impedance for load regulation requirements. Verify thermal resistance parameters against the specific PCB copper pad layout and ambient temperature conditions.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers extensive voltage selection from 3.3 to 100 volts. While standard versions have 5% tolerances, tighter tolerances are available via specific suffixes like 'C' for 2%. Surface mount equivalents such as SMAJ4728A to SMAJ4764A are also offered.

Replacement Considerations

Surface mount equivalents include SMAJ4750A and MLL4750A. Glass-body options exist for the same JEDEC numbers but feature different thermal characteristics. Military screening levels JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively.