JANTX1N5304UR-1

Current Regulation - Diodes, Transistors Overview

The JANTX1N5304UR-1 is a current regulator diode manufactured by Microchip Technology, designed for military and aerospace applications. It operates within the MIL-PRF-19500/463 series and features a surface-mount DO-213AB (MELF) package. The device provides a regulated current of 1.98 mA with a maximum peak operating voltage of 100 V and a power dissipation rating of 475 mW. It supports through-hole or SMT mounting styles depending on the specific variant configuration, with an operating temperature range from -55°C to +175°C.

Current Regulation - Diodes, Transistors Feature Summary

• Provides stable current regulation over a broad voltage range, serving as a counterpart to Zener diodes which regulate voltage.
• Qualified under MIL-PRF-19500/463 standards for high-reliability military and aerospace environments.
• Utilizes a compact MELF (DO-213AB) glass encapsulation suitable for automated surface-mount assembly.

Current Regulation - Diodes, Transistors Applications

• Constant current sources for LED driving circuits in harsh environments.
• Biasing elements for transistor amplifiers requiring stable DC current.
• Current limiting protection in sensitive electronic instrumentation.

Current Regulation - Diodes, Transistors Procurement Notes

Verify the exact suffix designation when ordering, as variations such as UR-1 indicate specific packaging or qualification levels. Confirm RoHS compliance status, as military-grade variants often fall outside standard environmental directives. Ensure the supplier provides traceability documentation consistent with MIL-PRF-19500 requirements for critical deployments.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a fixed current sink is required across varying voltage drops without active feedback loops. Compare the 1.98 mA nominal current against circuit load requirements to ensure adequate headroom. Consider the thermal management capabilities of the DO-213AB package relative to the 475 mW power dissipation limit in enclosed spaces.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the popular 1N5283-1 through 1N5314-1 series of 0.5-watt current regulators. These devices offer a selection of currents ranging from 0.22 mA to 4.7 mA in standard 10% tolerances. The JANTX1N5304UR-1 specifically targets the 1.98 mA segment of this family, providing a reliable solution for current stabilization in axial or surface-mount form factors.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct substitutes include other JANTX1N5304 variants with different suffixes if packaging differences are acceptable. Cross-reference with commercial equivalents like the 1N5304 series, noting that military qualification and tolerance specifications may differ significantly from commercial grades.