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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.



Current Limiting Diodes by Primary Attributes:

By Operating Voltage




By Power Consumption




Featured Current Limiting Diode Products


Manufacturer Part Number Description
Calogic SST507-LF SST500 Series 1.8 mA 2.8 V 360 mW Surface Mount Current Limiting Diode - SOT-23
Calogic J510-LF J500 Series 3.6 mA 3.9 V 360 mW Through Hole Current Limiting Diode - TO-92
Calogic J503-LF J500 Series 1.7 V 0.56 mA Through Hole Current Regulator Diode - TO-92
Calogic SST507-LF SST500 Series 1.8 mA 2.8 V 360 mW Surface Mount Current Limiting Diode - SOT-23
Calogic J503-LF J500 Series 1.7 V 0.56 mA Through Hole Current Regulator Diode - TO-92
Calogic J506-LF Current Regulator Diodes
Calogic J507-LF J500 Series 1.8 mA 2.8 V 360 mW Through Hole Current Limiting Diode - TO-92
Calogic J508-LF-TR J500 Series 2.4 mA 3.1 V 360 mW Through Hole Current Limiting Diode - TO-92
Central Semiconductor 1N5309 TR 1N5309 Series 2.25 V 3 mA Through Hole Silicon Current Limiting Diode - DO-35
Central Semiconductor CMJ5750 TR CMJ Series SOD-123FL 100V Current Limiting Diode
Central Semiconductor CCLM0300 TR CCLM Series 0.31 mA 0.8 V 800 mW Surface Mount Current Limiting Diode - SOD-80
Central Semiconductor CCLM2000 TR CCLM Series 2 mA 2.3 V 800 mW Surface Mount Current Limiting Diode - SOD-80
Central Semiconductor CMJH100 TR CMJ0100 SERIES 50 V 10 MA SURFACE MOUNT SILICON CURRENT LIMITING DIODE-SOD-123FL
Central Semiconductor CCLHM100 TR CCLHM Series 10 mA 3.5 V 800 mW Surface Mount Current Limiting Diode - SOD-80
Central Semiconductor CCLM0750 TR CCLM Series 0.76 mA 1.4 V 800 mW Surface Mount Current Limiting Diode - SOD-80
Central Semiconductor CCLH100 BK CCLH Series 10 mA 3.5 V 600 mW Through Hole Current Limiting Diode - DO-35
Central Semiconductor 1N5291 TR 1N Series 0.56 mA 1.1 V 600 mW Through Hole Current Limiting Diode - DO-35
Central Semiconductor 1N5297 TR 1N Series 1 mA 1.35 V 600 mW Through Hole Current Limiting Diode - DO-35
Central Semiconductor 1N5305 BK 1N Series 2 mA 1.85 V 600 mW Through Hole Current Limiting Diode - DO-35
Central Semiconductor 1N5311 TR LEADED CURRENT LIMITING DIODE
Central Semiconductor 1N5313 TR Leaded Current Limiting Diode Jedec do-35
Central Semiconductor CCLHM100 BK CCLHM Series 10 mA 3.5 V 800 mW Surface Mount Current Limiting Diode - SOD-80
Diodes Inc. GBJ2001-F BRIDGE IN-LINE GPP GBJ 20A 100V ROHS
ON Semiconductor CM2006-02QR CM2006 Series 500 mW 5 V ESD Protection L-C LCD/Camera EMI Filter Array
Zetex ZLDO1117G25TA IC REG LDO 1A 2.5V SOT223-3

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