What is a Current Limiting Diode?
A current limiting diode, also known as a CLD, current regulating diode, diode connected transistor or constant current diode, regulates or limits current over a wide voltage range. Current limiting diodes consist of a JFET with the gate shorted to the source and function like a two-terminal current limiter or current source, much like voltage limiting Zener diodes. They allow a current passing through them to rise to a certain value and then level off at a specific value. Contrary to Zener diodes, these diodes keep the current constant instead of keeping the voltage constant. Current limiting diodes keep the current which is flowing through them unchanged when the voltage changes.
Types of Current Limiting Diodes
There are many different kinds of current limiting diodes. At Future Electronics we stock many of the most common types categorized by nominal regulator current, maximum limiting voltage, operating voltage, packaging type and power consumption. The parametric filters on our website can help refine your search results depending on the required specifications.
The most common values for maximum limiting voltage are 1.7 V, 2.8 V, 3.1 V, 3.5 V and 3.7. V We also carry current limiting diodes with maximum limiting voltage up to 4.5 V. Nominal regulator current can have a range from 0.31 mA to 10 mA, with the most common nominal regulator current being 10 mA.
Current Limiting Diodes from Future Electronics
Future Electronics has a full current limiting diode chip selection from several manufacturers that can be used for a CLD circuit, diode circuits or any other device that may require a current limit diode. Simply choose from the current limiting diode technical attributes below and your search results will quickly be narrowed in order to match your specific current limiting diode application needs.
If you have a preferred brand, we deal with several semiconductor manufacturers such as Calogic, Central Semiconductor, Diodes Inc., ON Semiconductor or Zetex. You can easily refine your current limiting diode product search results by clicking your preferred current limiting diode brand below from our list of manufacturers.
Applications for Current Limiting Diodes:
Current limiting diodes offer high performance and simplicity characteristics compared with bipolar transistors. They offer versatility in several circuit applications and superior performance regarding dynamic and impedance temperature drift. Some examples of devices using current limiting diodes are waveform generator circuits, timing circuits and battery chargers. Current limiting diodes can also be found as a constant current source for driving LEDs and can be used in order to replace holding coils in telephone connection devices.
Choosing the Right Current Limiting Diode:
When you are looking for the right current limiting diodes, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Maximum Limiting Voltage (1.7 V, 2.8 V, 3.1 V, 3.5 V, 3.7 V,…), Operating Voltage (50 V or 100 V) and Power Dissipation (from 360 mW to 800 mW) to name a few. You will be able to find the right semiconductor chip for diode circuits, a CLD circuit or any other device that may require a current limit diode.
Current Limiting Diodes in Production Ready Packaging or R&D Quantities
If the quantity of current limiting diodes that you require is less than a full reel, we offer customers many of our current limiting diode products in tube, tray or individual quantities that will help you avoid unneeded surplus.
In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.