JANTX1N5291-1/TR

Current Regulation - Diodes, Transistors Overview

The JANTX1N5291-1/TR is a current regulator diode manufactured by Microchip Technology, belonging to the 1N5283-1 through 1N5314-1 series. It provides a regulated current of 616 µA with a maximum reverse voltage rating of 100 V and a power dissipation capacity of 500 mW. The device features a 10% tolerance and utilizes a DO-7 axial-leaded package for through-hole mounting. Qualified per MIL-PRF-19500/463, it serves as a counterpart to Zener diodes by regulating current over a broad voltage range rather than voltage over a broad current range.

Current Regulation - Diodes, Transistors Feature Summary

• Provides constant current regulation across a wide operating voltage range
• Qualified to MIL-PRF-19500/463 standards for high-reliability applications
• Utilizes double-plug internal bond connection within DO-7 packaging

Current Regulation - Diodes, Transistors Applications

• Constant current sources for LED driving circuits
• Biasing elements for transistor amplifier stages
• Current limiting protection in sensitive electronic loads

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific suffix configuration when ordering, as the -TR designation indicates tape-and-reel packaging which may differ from bulk variants. Confirm that the JAN qualification level meets the required environmental and reliability specifications for the target application. Cross-reference the manufacturer's latest datasheet to ensure the part number corresponds to the exact electrical characteristics and package style required for the design.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a stable, low-current reference is needed independent of supply voltage fluctuations. Ensure the circuit voltage remains below the 100 V maximum rating while providing sufficient headroom for regulation. Consider the 500 mW power dissipation limit when calculating thermal performance at the specified 616 µA operating point. Verify compatibility with the DO-7 through-hole footprint during PCB layout.

Current Regulation - Diodes, Transistors Part Context

This part is part of the broader 1N5283-1 to 1N5314-1 family of current regulator diodes offered by Microchip. These devices share similar functional principles but vary in their regulated current values, ranging from 0.22 mA to 4.7 mA. The JANTX1N5291-1 specifically targets the 616 µA segment of this lineup, offering a precise current option within the standard 10% tolerance band available across the series.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct replacements include other parts from the 1N5283-1 through 1N5314-1 series if current tolerance allows adjustment. Commercial equivalents such as the standard 1N5291-1 may be considered if military qualification is not required. Verify pinout and package dimensions match before substituting.