1N5298

Overview

The Microchip Technology 1N5298 is a current regulator diode designed for stable current control in electronic circuits. It operates with a maximum anode-to-cathode voltage of 100V and provides a regulated current of 1.21mA. The device has a maximum power dissipation rating of 500mW and a maximum limit voltage of 1.4V. It is housed in a DO-7 (DO-204AA) axial through-hole package, suitable for standard PCB mounting. The component supports a wide operating temperature range from -65°C to +175°C junction temperature.

Feature Summary

• Provides constant current regulation independent of supply voltage variations within specified limits
• Capable of operation across extended industrial temperature ranges up to 175°C junction temperature
• Utilizes robust axial leaded packaging for reliable through-hole integration

Applications

• Biasing circuits for transistors and integrated circuits requiring stable current sources
• LED driver applications where constant current flow is necessary for consistent brightness
• Protection circuits limiting current to sensitive downstream components

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as 1N5298-1 or 1N5298RL/TR may exist with different packaging configurations like bulk or tape-and-reel. Confirm RoHS compliance status directly with the manufacturer, as historical data indicates some versions may not meet current environmental standards. Ensure the required regulated current value matches the design specifications precisely.

Selection Notes

Select this component when a fixed current source is needed without active feedback loops. The 1.21mA output is fixed; verify that this specific current level suits the load requirements. Consider the 100V breakdown voltage to ensure adequate headroom for the application's maximum operating voltage. Evaluate thermal management needs given the 500mW power dissipation limit at elevated temperatures.

Part Context

This part belongs to the 1N5298 series of current regulator diodes manufactured by Microchip Technology. These devices are passive semiconductor components used primarily for current stabilization. The series offers various current ratings, with the base model providing specific milliampere-level regulation. They serve as simple alternatives to active current sources in cost-sensitive or low-complexity designs.

Replacement Considerations

Direct substitutes include other 1N5298 series parts from different manufacturers offering identical 1.21mA regulation and DO-7 packaging. Verify pinout compatibility and electrical parameters such as limit voltage and power dissipation before substitution.