J501 TO-92 2L

Current Regulation - Diodes, Transistors Overview

The Linear Integrated Systems J501 is a two-lead current regulator diode designed for stable constant-current applications. It utilizes JFET techniques to provide a ±20% tolerance range, ensuring reliable performance in test equipment and instrumentation. The device operates up to 45V with high-voltage spike protection and features excellent temperature stability without requiring separate voltage sources or complex biasing circuits.

Current Regulation - Diodes, Transistors Feature Summary

• Two-lead plastic package design simplifies circuit integration
• Guaranteed ±20% current tolerance for consistent performance
• High-voltage spike protection capability up to 45V operation
• Excellent temperature stability suitable for demanding environments

Current Regulation - Diodes, Transistors Applications

• Test equipment and instrumentation current regulation
• Constant-current supply circuits
• Current-limiting protection applications
• Timing circuits requiring stable current sources

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific package variant (TO-92 vs SOT-23) as documentation indicates both exist for the J501 designation. Confirm that the supplier provides official Linear Integrated Systems or authorized replacement documentation. Check for any discontinuation notices from original manufacturers like Siliconix, as this part may be a replacement component. Ensure the received units match the required ±20% tolerance specification for your application.

Current Regulation - Diodes, Transistors Selection Notes

Select the J501 when a simple two-terminal current source is needed without external biasing components. Consider the ±20% tolerance if precise current matching is not critical. Evaluate the 45V maximum operating voltage against your circuit requirements. Compare thermal performance characteristics if high-power dissipation near the 350mW limit is expected in your design environment.

Current Regulation - Diodes, Transistors Part Context

This component belongs to the J500 series of current regulator diodes manufactured by Linear Integrated Systems. It serves as a replacement for discontinued Siliconix J501 devices. The series includes various models with different current ratings, all sharing similar JFET-based construction and two-lead packaging options for simplified implementation in electronic circuits.

Current Regulation - Diodes, Transistors Replacement Considerations

The LSJ501 is documented as a direct replacement for the discontinued Siliconix J501. Verify pinout compatibility between TO-92 and SOT-23 packages if substituting across form factors. Ensure the replacement maintains the same ±20% tolerance and 45V operating limits for equivalent circuit performance.