E-272

Current Regulation - Diodes, Transistors Overview

The Semitec E-272 is a leaded current regulating diode (CRD) designed to maintain a constant current flow despite voltage fluctuations. It operates within a wide voltage range from less than 1V to 100V, requiring only a single component to establish a constant current circuit. The device features a rated power of 300 mW and an allowable reverse current of 50 mA. Its pinch-off current is specified at 2.70 mA with a typical limiting current ratio of 1.1 max. The operating temperature range spans from -30°C to +150°C, and the junction temperature reaches up to 150°C.

Current Regulation - Diodes, Transistors Feature Summary

• Maintains constant current regardless of applied voltage or load resistance changes
• Simplifies circuit design by replacing multiple components with a single part
• Operates reliably across a wide temperature range suitable for diverse environments

Current Regulation - Diodes, Transistors Applications

• Constant current source for LED brightness stabilization
• Battery charge and discharge circuits
• Current source for piezoelectric actuators
• Stabilized power supply circuits

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging type, as markings indicate untaped bulk products when no suffix is present. Confirm compliance requirements such as RoHS status directly with the manufacturer's latest datasheet before procurement. Ensure the selected variant matches the required thermal and electrical specifications for the intended application environment.

Current Regulation - Diodes, Transistors Selection Notes

Select the E-272 based on its 2.70 mA pinch-off current rating and 300 mW power dissipation capability. Consider the axial leaded package for through-hole mounting applications. Evaluate the need for external compensation resistors if precise current stability under self-heating conditions is critical. Verify that the maximum peak working voltage does not exceed the 100V limit for this series.

Current Regulation - Diodes, Transistors Part Context

The E-272 belongs to Semitec's E Series of current regulating diodes, which are characterized by their leaded construction and 300 mW rated power. This series is distinct from the S Series, which offers higher power ratings and surface mount packages. The E Series provides a robust solution for applications requiring stable current regulation in standard through-hole configurations.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct replacements must match the 2.70 mA pinch-off current and 300 mW power rating. Verify that alternative CRDs support the same axial leaded package and operate within the -30°C to +150°C temperature range. Cross-reference voltage limits and temperature coefficients to ensure functional equivalence in the target circuit.