1N5525B/TR

Overview

The Microchip Technology 1N5525B/TR is a low voltage avalanche Zener diode with a nominal breakdown voltage of 6.2 V at a test current of 1 mA. It operates within a power dissipation limit of 0.5 W and features a ±5% voltage tolerance. The device utilizes a hermetically sealed axial-lead glass DO-35 package, suitable for through-hole mounting. Electrical characteristics include a maximum reverse leakage current of 4.5 µA at 5 V and a dynamic impedance of 30 Ohms. It supports an operating temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range.
• Features minimal capacitance and inherent radiation hardness.
• Constructed in a hermetically sealed glass axial-lead package.

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging configuration. Confirm that the TR suffix corresponds to tape and reel packaging as defined by EIA-296 standards. Ensure compatibility with MIL-PRF-19500/437 qualification requirements if military-grade reliability is necessary for the application.

Selection Notes

Select this component when a precise 6.2 V reference is required with tight ±5% tolerance. Consider the DO-35 package dimensions and thermal resistance values for PCB layout. Evaluate the maximum DC regulator current and noise density specifications against circuit sensitivity requirements.

Part Context

This part belongs to the 1N5518B through 1N5546B series of 0.5 W axial-leaded glass Zener Voltage Regulators. The series offers a selection of voltages from 3.3 to 33 volts. The B suffix indicates a standard 5% voltage tolerance. These devices are JEDEC registered and available in commercial versions.

Replacement Considerations

Consult official substitution lists for equivalent parts. Verify that any alternative maintains the same voltage tolerance, package type, and electrical ratings.

FAQ

What does the 'TR' suffix indicate for this part number?

The 'TR' suffix indicates that the device is supplied in tape and reel packaging, conforming to EIA-296 standards.

How is the polarity identified on the 1N5525B?

Polarity is indicated by a band on the cathode end. For Zener regulation, the banded end must be positive with respect to the opposite end.