1N5297-1

Overview

The JANTX1N5297-1 is a current regulator diode from the MIL-PRF-19500/463 qualified series, manufactured by Microchip Technology. It operates in a through-hole DO-7 (DO-204AA) axial package. The device provides a regulated current of 1.1 mA with a standard tolerance of 10%. It supports a maximum voltage of 100 V and handles a power dissipation of 475 mW. The component functions as a constant current source over a broad voltage range, serving as an alternative to Zener diodes for specific regulation needs.

Feature Summary

• Provides stable current regulation across a wide voltage span
• Qualified for military standards under MIL-PRF-19500/463
• Utilizes double-plug internal bond connection for reliability

Applications

• Constant current sources for LED biasing
• Current limiting protection circuits
• Biasing elements for transistor amplifier stages

Procurement Notes

Verify the specific ordering suffix to confirm the exact qualification level, such as JAN, JANTX, JANTXV, or JANS, as these designations indicate distinct manufacturing grades and testing requirements. Ensure the procurement documentation explicitly references MIL-PRF-19500/463 compliance to guarantee authenticity and traceability for defense or aerospace deployments.

Selection Notes

Select this component when a fixed current sink is required independent of supply voltage fluctuations within the specified limits. Compare the 1.1 mA nominal current against circuit load requirements. Verify that the 100 V maximum rating exceeds the peak operating voltage to prevent breakdown. Consider the DO-7 package size for board layout constraints compared to surface-mount alternatives.

Part Context

This part belongs to the popular 1N5283-1 through 1N5314-1 series of 0.5 W current regulators. The series offers various current values ranging from 0.22 mA to 4.7 mA. These devices are designed to regulate current similarly to how Zener diodes regulate voltage, providing a versatile solution for axial-leaded applications requiring precise current control.

Replacement Considerations

Direct substitutes include other parts within the 1N5283-1 to 1N5314-1 series if different current ratings are acceptable. Commercial equivalents may be considered for non-military applications, provided they meet the 1.1 mA regulation and 100 V blocking voltage specifications.