E-153

Current Regulation - Diodes, Transistors Overview

The Semitec E-153 is a leaded current regulating diode (CRD) designed to maintain a constant current flow despite voltage fluctuations. It features a rated power of 300 mW and operates within a temperature range of -30°C to +150°C. The device provides a typical pinch-off current of 15 mA, with a minimum of 12 mA and a maximum of 18 mA at 10 V. The limiting current ratio (I100V/Ip) is typically 4.3. Recommended operating voltages include 25 V for the E-153 model. It utilizes an axial package configuration.

Current Regulation - Diodes, Transistors Feature Summary

• Maintains constant current output across a wide voltage range from less than 1V to 100V
• Simplifies circuit design by replacing multiple components with a single part
• Provides stable current regulation regardless of load resistance changes or ripple voltage
• Capable of operation in high-temperature environments up to 150°C

Current Regulation - Diodes, Transistors Applications

• Constant current source for LED brightness stabilization
• LED street lights, fluorescent lamps, and downlights
• Constant voltage circuits for supplying Zener diodes
• Battery charge and discharge circuits
• Telecommunications line interfaces

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific ordering suffix to confirm packaging type, as Semitec offers both untaped bulk and axial taping options (reel or box). Confirm compliance requirements such as RoHS status directly with the manufacturer documentation before procurement. Ensure the selected variant matches the required pinch-off current tolerance and thermal characteristics for the intended application environment.

Current Regulation - Diodes, Transistors Selection Notes

Select the E-153 when a nominal 15 mA constant current is required in through-hole designs. Consider the 300 mW power rating and ensure adequate heat dissipation if ambient temperatures approach the upper limit of 150°C. For higher current needs, consider parallel configurations or SMD variants like the S-153T. Verify that the operating voltage remains within the recommended limits to prevent breakdown or excessive power dissipation.

Current Regulation - Diodes, Transistors Part Context

The E-153 belongs to Semitec's E series of current regulating diodes, which are characterized by a 300 mW rated power and a -30°C to +150°C operating temperature range. This series is distinct from the S series, which offers 500 mW power handling and a wider temperature range starting at -40°C. Both series share similar electrical performance profiles but differ in physical construction and thermal capabilities.

Current Regulation - Diodes, Transistors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout compatibility and electrical parameters against alternative CRDs from other manufacturers if direct replacement is necessary.