1N3042B-1/TR

Overview

The Microchip Technology 1N3042B-1/TR is a 1-watt glass case Zener diode registered under JEDEC standards. It provides a nominal Zener voltage of 82 volts with a 5% tolerance, tested at a current of 3.0 mA. The device features a maximum dynamic impedance of 200 ohms and a maximum reverse leakage current of 10 µA. Qualified per MIL-PRF-19500/115 for JAN, JANTX, and JANTXV levels, it operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• Hermetically sealed DO-41 glass package with metallurgically bonded construction
• Qualified for high-reliability military applications including JAN, JANTX, and JANTXV levels
• Inherently radiation hard design suitable for harsh environments

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring hermetic sealing
• Radiation-hardened system designs

Procurement Notes

Verify the specific military qualification level (JAN, JANTX, or JANTXV) required for your application, as these levels dictate reliability standards but do not alter the electrical function. Confirm that the tape and reel packaging aligns with your automated assembly equipment specifications before finalizing the order.

Selection Notes

Select this component when a 1-watt power dissipation rating and an 82-volt breakdown voltage are necessary. Ensure the circuit can accommodate the specified 200-ohm dynamic impedance and 10 µA leakage current limits. Verify that the through-hole DO-41 package dimensions fit the available board space and thermal management requirements.

Part Context

This part belongs to the 1N3016B-1 through 1N3045B-1 series of 1-watt Zener diodes. The series covers a voltage range from 6.8 to 110 volts in the same glass DO-41 package. The 'B' suffix indicates a 5% voltage tolerance, while the '-1' denotes the metallurgically bonded DO-41 package style.

Replacement Considerations

Direct substitutes include other manufacturers' 1N3042B equivalents meeting the same JEDEC registration and MIL-PRF-19500/115 qualification. Ensure any replacement maintains the 1-watt power rating and hermetic seal characteristics.