A Current Limiting Diode (CLD), also known as a "Current Regulating Diode" or a "Constant Current Diode," performs quite a unique function. Similar to a zener diode, which regulates voltage at a particular current, the CLD limits or regulates current over a wide voltage range.
CLDs are diffused using a "Field Effect" process similar to diffusion techniques used for manufacturing JFETs with the electrical characteristics optimized for high output impedance and current regulating capability.
Available in a wide range of voltage and current ratings, and offered in a variety of through-hole and surface mount package styles, the CLD provides an alternative to conventional design techniques for controlling current, especially when reliability and component density are prime considerations.
• Surface Mount Current Limiting Diodes
Surface mount current limiting diodes are available in the low profile SOD-123FL package.
Regulator currents range from 0.13mA thru 18mA. Special selection of IP (regulator
current) is available upon request for critical applications.