JAN1N5537BUR-1

Single Zener Diodes Overview

The JAN1N5537BUR-1 is a low voltage avalanche Zener diode with a nominal breakdown voltage of 17 V and a maximum power dissipation of 0.5 W. It features a 5% voltage tolerance, a test current of 1.0 mA, and a maximum dynamic impedance of 0.01 Ohms at the test point. The device operates within a junction temperature range of -65°C to +175°C and utilizes a hermetically sealed DO-213AA MELF surface mount package.

Single Zener Diodes Feature Summary

• Qualified per MIL-PRF-19500/437 for JAN, JANTX, and JANTXV military reliability levels
• Features an internal metallurgical bond construction for enhanced durability
• Hermetically sealed glass DO-213AA MELF surface mount package
• Inherently radiation hard and nonsensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense electronic circuits
• Radiation-hardened system designs requiring stable reference voltages

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required military qualification level (JAN, JANTX, or JANTXV) and tolerance code (B for 5%). Confirm the presence of the -1 suffix to ensure the internal metallurgical bond option is included in the final component assembly.

Single Zener Diodes Selection Notes

Select this component when a 17 V reference with tight 5% tolerance is required in a surface mount form factor. Ensure the application environment supports the specified thermal resistance values and that the DO-213AA footprint aligns with the recommended PCB layout dimensions provided in the datasheet.

Single Zener Diodes Part Context

This part belongs to the 1N5518BUR-1 through 1N5546BUR-1 series of 0.5 W glass surface mount Zener regulators. The series covers a voltage selection from 3.3 V to 33 V, offering various tolerance options identified by specific letter suffixes preceding the UR-1 designation.

Single Zener Diodes Replacement Considerations

JEDEC registered equivalents include the 1N5537D axial-leaded variant. Other compatible parts within the same family include the 1N5536BUR-1 and 1N5539BUR-1, provided their respective voltage ratings match the circuit requirements.

Single Zener Diodes FAQ

How is polarity indicated on the JAN1N5537BUR-1?

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

What does the 'UR' suffix indicate in the part number?

The 'UR' suffix identifies the device as a surface mount package type, specifically the DO-213AA MELF style.