1N5534B

Overview

The Microchip Technology 1N5534B is a low voltage avalanche Zener diode rated at 0.5 W, housed in a hermetically sealed axial-lead glass DO-35 package. It provides a nominal Zener voltage of 14 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum Zener impedance of 100 Ohms at a test current of 1 mA, a maximum reverse leakage current of 1 µA at 11.5 V, and a forward voltage of 1.1 V at 200 mA.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Voltage regulation maintained across broad operating currents and temperatures
• Minimal capacitance suitable for high-frequency applications
• Inherently radiation hard

Applications

• Voltage regulation over broad operating current ranges
• Reference voltage sources
• Protection circuits requiring minimal capacitance

Procurement Notes

Verify the specific suffix requirements against the datasheet nomenclature. The B suffix indicates a ±5% voltage tolerance. Confirm if military qualification levels such as JAN, JANTX, or JANTXV are required, as these necessitate a metallurgical bond option (-1 suffix). Ensure the ordering part number matches the desired tolerance and bond type specifications.

Selection Notes

Select this component when a 14 V reference with ±5% tolerance is needed in an axial-lead package. Consider the -1 suffix if a metallurgical bond is required for enhanced reliability. Verify that the 0.5 W power dissipation rating and thermal resistance values meet the circuit's derating requirements under expected ambient conditions.

Part Context

This component belongs to the 1N5518 through 1N5546 series of 0.5 W axial-leaded glass Zener Voltage Regulators. The series offers a selection from 3.3 to 33 volts with various tolerance options. The 1N5534B specifically addresses the 14 V segment of this standardized JEDEC registered lineup.

Replacement Considerations

Equivalent parts within the same series include 1N5533B (13 V) and 1N5535B (15 V). For higher precision, consider the C suffix (±2%) or D suffix (±1%) variants. Military qualified versions require the -1 suffix for metallurgical bonding.