JAN1N5538B-1/TR

Single Zener Diodes Overview

The JAN1N5538B-1/TR is a low voltage avalanche Zener diode from the 1N5518 thru 1N5546 series, manufactured by Microchip Technology. It features a nominal Zener voltage of 18 V at a test current of 1 mA and operates within a temperature range of -65°C to +175°C. The device provides a maximum power dissipation of 0.5 W in a hermetically sealed axial-lead glass DO-35 package. Qualified per MIL-PRF-19500/437, it includes an internal metallurgical bond option indicated by the "-1" suffix and is supplied in tape and reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed axial-lead glass DO-35 package with internal metallurgical bond
• Qualified per MIL-PRF-19500/437 for JAN reliability level
• Voltage tolerance of plus/minus 5% indicated by B suffix
• Inherently radiation hard and nonsensitive to ESD

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Military and aerospace electronic circuits requiring high reliability
• Low noise reference applications due to minimal capacitance

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required military qualification level and metallurgical bond configuration. Confirm the tape and reel packaging format aligns with automated assembly requirements. Ensure environmental compliance needs are met, as this specific variant may not be RoHS compliant compared to commercial versions. Cross-reference datasheet electrical characteristics against system design limits before procurement.

Single Zener Diodes Selection Notes

Select this component when a stable 18 V reference is needed in harsh environments. The JAN qualification ensures strict screening standards suitable for defense applications. Consider the 0.5 W power rating and thermal resistance values for proper heat dissipation on FR4 boards. Verify that the 5% voltage tolerance meets circuit precision requirements without needing tighter C or D suffix variants.

Single Zener Diodes Part Context

This component belongs to the 1N5518 through 1N5546 series of low voltage avalanche Zener diodes. The series offers voltage selections from 3.3 V to 33 V with various tolerance options. The JAN prefix denotes a specific military reliability level, while the "-1" suffix specifies the internal metallurgical bond construction available in this package type.

Single Zener Diodes Replacement Considerations

JAN1N5538B-1

Single Zener Diodes FAQ

What does the "-1" suffix indicate in the part number?

The "-1" suffix indicates that the device features an internal metallurgical bond construction.

Is this component qualified for military use?

Yes, the JAN1N5538B-1/TR is qualified per MIL-PRF-19500/437 for the JAN reliability level.