CMJDH120 TR

Overview

The CMJDH120 TR is a surface-mount current regulator diode manufactured by Central Semiconductor. It provides a regulated current of 12 mA with a maximum peak operating voltage of 50 V and a power dissipation rating of 500 mW. The device utilizes silicon technology and features a low dynamic impedance of 170 kOhms minimum, ensuring stable current regulation. It operates within a temperature range from -55°C to +150°C and is supplied in a reel package format.

Feature Summary

• Maintains constant current output across varying load conditions
• Operates reliably at elevated junction temperatures up to 150°C
• Provides high impedance characteristics for effective current limiting

Applications

• Constant current sources for LED biasing
• Current limiting protection in transistor circuits
• Standard cell replacement in battery-powered devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and environmental compliance. Confirm availability status directly with authorized distributors as supply levels fluctuate. Ensure the selected variant matches the required lead-free specifications if mandated by project standards.

Selection Notes

Select this component when a fixed 12 mA regulation is required within a 50 V limit. Verify that the 500 mW power dissipation capability meets the thermal requirements of the target application. Consider the SMD form factor for automated assembly processes requiring reel packaging.

Part Context

This part belongs to the CPL03-CMJD series of current regulator diodes from Central Semiconductor. It shares functional similarities with other members like the CMJH120 but offers specific surface-mount packaging advantages. The series is designed for compact circuit designs requiring precise current control without complex active components.

Replacement Considerations

Direct substitutes include the CMJH120 and CMJDH100, provided the current and voltage ratings align with the design requirements. Verify pinout compatibility and thermal performance before implementing any cross-reference.