1N5254B-TP

Single Zener Diodes Overview

The 1N5254B-TP is a 500 mW Zener diode in a DO-35 glass package, manufactured by Micro Commercial Components. It features a nominal Zener voltage of 27 Volts at a test current of 4.6 mA. The 'B' suffix indicates a 5% tolerance on the nominal voltage. Maximum Zener impedance (ZZT) is 41 Ohms at the test current, while maximum knee impedance (ZZK) is 600 Ohms at 0.25 mA. Reverse leakage current is limited to 0.1 µA at 21 Volts. The device operates within a temperature range of -55°C to +150°C and exhibits a positive temperature coefficient of +0.090 %/°C.

Single Zener Diodes Feature Summary

• Glass encapsulation providing high-temperature soldering capability up to 260°C for 10 seconds.
• Lead-free finish compliant with RoHS standards, utilizing a lead-in-glass exemption.
• Defined electrical characteristics including specific impedance and leakage limits for precision regulation.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels.
• Overvoltage protection in low-power electronic systems.
• Clamping applications for transient voltage suppression.

Single Zener Diodes Procurement Notes

Verify authenticity through authorized MCC distributors or direct purchase to avoid counterfeit components. Confirm the 'TP' suffix corresponds to Tape & Reel packaging if required for automated assembly. Ensure the 'B' suffix is present to guarantee the specified 5% voltage tolerance. Check for the cathode band marking on the DO-35 package for correct orientation during installation.

Single Zener Diodes Selection Notes

Select this component when a 27V Zener voltage with 5% tolerance is required in a DO-35 package. Consider the 500 mW power dissipation limit and derating curve above 50°C. Evaluate the positive temperature coefficient for thermal stability requirements. Compare impedance values against circuit sensitivity needs.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5267B series of 500 mW Zener diodes. The series covers a wide voltage range from 2.4V to 75V. All parts share the same DO-35 glass package and general maximum ratings. The 'B' suffix consistently denotes 5% tolerance across the entire family.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering 1N5254B equivalents in DO-35 packages. Verify that substitute parts meet the 27V nominal voltage, 5% tolerance, and 500 mW power rating specifications. Ensure interface compatibility and thermal performance match the original design requirements.

Single Zener Diodes FAQ

What does the 'B' suffix indicate for the 1N5254B?

The 'B' suffix signifies a 5% tolerance on the nominal Zener voltage.

What is the maximum reverse leakage current for this device?

The maximum reverse leakage current is 0.1 µA at a reverse voltage of 21 Volts.

How is the cathode identified on the package?

The cathode is marked with a band on the glass body.