1N5526B/TR

Overview

The Microchip Technology 1N5526B/TR is a low voltage avalanche Zener diode rated at 0.5 W, housed in an axial-lead glass DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 6.8 V with a ±5% tolerance and operates within a temperature range of -65°C to +175°C. The device features a maximum reverse leakage current of 1 µA at 6.2 V and a maximum Zener impedance of 30 Ohms at the test current of 1 mA. It includes a tape and reel option indicated by the TR suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features hermetically sealed axial-lead glass construction for environmental protection
• Offers minimal capacitance suitable for high-frequency applications
• Inherently radiation hard without requiring special processing

Applications

• Voltage regulation circuits requiring stable reference voltages
• Protection against overvoltage conditions in sensitive electronics
• Clamping applications in signal processing paths
• Power supply output stabilization

Procurement Notes

Verify that the specific order includes the TR suffix to ensure the component is supplied in tape and reel packaging rather than bulk. Confirm the B suffix corresponds to the required ±5% voltage tolerance. Ensure the procurement documentation matches the commercial grade specifications if military qualification levels are not required for the intended application environment.

Selection Notes

Select this component when a 6.8 V reference is needed with moderate precision. The DO-35 package supports through-hole mounting. Consider the thermal resistance values for power derating calculations above 50°C ambient temperature. Verify that the maximum DC regulator current aligns with the circuit's load requirements to prevent exceeding the 0.5 W power dissipation limit.

Part Context

This part belongs to the 1N5518B through 1N5546B series of low voltage avalanche Zener diodes manufactured by Microchip Technology. The series covers a voltage range from 3.3 V to 33 V. The 1N5526B variant specifically targets the 6.8 V segment of this lineup, offering standard commercial reliability in a widely used axial leaded form factor.

Replacement Considerations

1N5526B-1

FAQ

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

The 'TR' suffix indicates that the device is packaged in tape and reel format according to EIA-296 standards.

How is polarity identified on the 1N5526B/TR?

Polarity is marked by a band on the glass body; the cathode is located at the banded end.

What is the maximum junction temperature for operation?

The maximum junction temperature for steady-state operation is +175°C.