JANS1N5303UR-1/TR

Current Regulation - Diodes, Transistors Overview

The JANS1N5303UR-1/TR is a current regulator diode from the 1N5283UR-1 through 1N5314UR-1 series, manufactured by Microchip Technology. It provides a regulated current of 1.76 mA with a maximum peak operating voltage of 100 V and a power dissipation rating of 500 mW. The device utilizes a DO-213AB (MELF) surface-mount package and is qualified per MIL-PRF-19500/463 for JANS levels. It features high source impedance and internal metallurgical bonding, offering stable current regulation over a broad voltage range.

Current Regulation - Diodes, Transistors Feature Summary

• Provides constant current regulation over a wide voltage range as a counterpart to Zener diodes
• Features double-plug internal bond construction for reliability
• High source impedance ensures stable performance under varying load conditions
• Qualified for JANS levels per MIL-PRF-19500/463 standards

Current Regulation - Diodes, Transistors Applications

• Military aerospace electronic circuits requiring radiation-hardened components
• Current limiting applications in harsh environmental conditions
• Biasing circuits for semiconductor devices needing stable current sources
• Protection circuits where consistent current flow is critical

Current Regulation - Diodes, Transistors Procurement Notes

Verify that the specific suffix /TR indicates tape-and-reel packaging if reel supply is required, as standard listings may vary. Confirm JANS qualification status directly with the manufacturer or authorized distributors, as this denotes a specific military grade. Ensure compatibility with DO-213AB footprint requirements during PCB design. Check for RoHS compliance status, noting that military grades often have specific exemptions or variations compared to commercial versions.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a precise 1.76 mA regulation is needed within a 100 V maximum voltage window. The DO-213AB MELF package suits space-constrained surface-mount designs. Consider the JANS qualification for environments requiring radiation hardness. Compare against other series members like JANS1N5309UR-1/TR if higher current values are necessary. Ensure the thermal management supports the 500 mW dissipation rating in the intended application.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the popular 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. These devices offer a selection of currents from 0.22 mA to 4.7 mA in standard 10% tolerances. The series serves as a functional alternative to Zener diodes, regulating current rather than voltage. The DO-213AB package is the JEDEC registered surface mount equivalent of the axial-leaded 1N5283 through 1N5314 series.

Current Regulation - Diodes, Transistors Replacement Considerations

JAN1N5303UR-1 and JANTX1N5303UR-1 are lower qualification levels within the same series. Commercial versions may lack the radiation hardness and specific military testing associated with the JANS designation. Verify electrical parameters match exactly before substitution, as tolerance and leakage characteristics may differ between qualification levels.