1N5314UR-1/TR

Current Regulation - Diodes, Transistors Overview

The Microchip Technology 1N5314UR-1/TR is a surface-mount current regulator diode housed in the DO-213AB (MELF, LL41) package. It provides a nominal regulating current of 4.70 mA with a tolerance range of 4.23 mA to 5.17 mA at a test voltage of 25 V. The device supports a maximum working peak voltage of 100 V and dissipates up to 500 mW of power. It operates within a junction temperature range of -65 °C to +150 °C. Key electrical parameters include a minimum regulator impedance of 0.235 MΩ and a maximum limiting voltage of 2.90 V.

Current Regulation - Diodes, Transistors Feature Summary

• JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
• Hermetically sealed leadless glass case with internal metallurgical bond
• High source impedance for stable current regulation
• Double-plug construction for enhanced reliability

Current Regulation - Diodes, Transistors Applications

• Current limiting circuits requiring broad operating voltage ranges
• Temperature-compensated reference circuits
• Biasing networks for semiconductor devices

Current Regulation - Diodes, Transistors Procurement Notes

Verify that the ordering suffix matches the required packaging configuration. Confirm whether military qualification levels such as JAN or JANS are necessary for the specific application environment. Ensure compliance with RoHS requirements if applicable, noting that commercial grade versions may differ from qualified variants.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a precise constant current source is needed over a wide voltage span. Compare the nominal current against circuit requirements to ensure it falls within the standard 10% tolerance band. Verify thermal management capabilities given the 500 mW dissipation limit and derating characteristics above 125 °C.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the popular 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. It serves as the surface-mount counterpart to axial-leaded versions, offering similar functionality in a compact DO-213AB package suitable for automated assembly processes.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct replacements include other members of the 1N5283UR-1 to 1N5314UR-1 series with matching current ratings. Axial equivalents like the 1N5314-1 are functionally similar but require different mounting considerations.