1N5283 TR PBFREE

Overview

The 1N5283 TR PBFREE is a current regulator diode manufactured by Central Semiconductor Corp. It provides a regulated current of 242 µA with a maximum limiting voltage of 1 V and a peak operating voltage of 100 V. The device features a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. Packaged in the DO-7 through-hole format, it exhibits a minimum dynamic impedance of 25 mΩ and a minimum knee impedance of 2.75 mΩ.

Feature Summary

• Maintains stable current output across varying load conditions
• Operates reliably under high peak voltage stress up to 100 V
• Supports extended thermal operation up to 175°C junction temperature

Applications

• Constant current sources for LED biasing
• Current limiting protection in transistor base circuits
• Bias stabilization for analog signal processing stages

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing from distributors. Confirm RoHS compliance status as indicated by 'PBFREE'. Cross-reference manufacturer part numbers with distributor codes to ensure exact electrical match. Check lead times as manufacturing standard delivery may vary significantly.

Selection Notes

Select this component where precise microampere-level current regulation is required without active feedback loops. Ensure the circuit voltage does not exceed the 100 V peak limit. Verify that the 500 mW power rating accommodates the voltage drop across the device at the target operating current.

Part Context

This part belongs to the 1N5283 family of silicon current regulator diodes. It serves as a passive alternative to active current sources, offering simplicity in design. The TR PBFREE designation specifies surface-compatible or through-hole reel packaging compliant with lead-free standards.

Replacement Considerations

JAN1N5283-1/TR by Microchip/Microsemi offers equivalent electrical specifications including 242 µA regulation and DO-7 packaging.