Constant Current Diodes

A constant current diode also called a current limiting diode (CLD), is an electronic device that regulates or limits current to a maximum value. This is important as it protects your circuit from harmful effects in the event of a short-circuit.

How do constant current diodes work?

Constant current diodes are made from a junction field-effect transistor, the simplest type of three-terminal semiconductor transistor which functions like a current limiter. They allow the current running through them to rise to a certain point and level off at a specific value. Unlike zener diodes constant current diodes maintain a constant current instead of the constant voltage.

Applications for constant current diodes

Constant current diodes can be used in several circuit applications. Examples of devices using constant current diodes include waveform generator circuits, timing circuits and battery chargers. Constant current diodes can also be used as a constant current source for LED drivers and can be used to replace holding coils in telephone connection devices.


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Omschrijving Prijs Diode Configuration Maximum Regulator Current Number of Elements per Chip Maximum Peak Operating Voltage Minimum Dynamic Impedance Maximum Limiting Voltage Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Temperature
RS-stocknr. 197-7487
FabrikantnummerREF200AU
€ 7,70
Each
Aantal stuks
Single 100µA 3 40V 500MΩ 40V - SOIC 8 - - - - -
RS-stocknr. 170-5384
FabrikantnummerPSSI2021SAY,115
FabrikantNexperia
€ 0,279
Each (In a Pack of 25)
Aantal stuks
Single 50mA 2 75V - 73V Surface Mount SC-88A 5 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm +150 °C
Nieuw
RS-stocknr. 208-8576
FabrikantnummerLM334MX/NOPB
€ 0,627
Each (In a Pack of 25)
Aantal stuks
- 1mA 1 40V - 0.8V - SOIC 8 - - - - -
RS-stocknr. 156-5698
FabrikantnummerLT3092ETS8#TRMPBF
FabrikantAnalog Devices
€ 2,192
Each (On a Reel of 500)
Aantal stuks
Single - 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
RS-stocknr. 168-9539
FabrikantnummerAL5809-30QP1-7
FabrikantDiodesZetex
€ 0,18
Each (On a Reel of 3000)
Aantal stuks
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
RS-stocknr. 170-4833
FabrikantnummerPSSI2021SAY,115
FabrikantNexperia
€ 0,114
Each (On a Reel of 3000)
Aantal stuks
Single 50mA 2 75V - 73V Surface Mount SC-88A 5 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm +150 °C
RS-stocknr. 197-7486
FabrikantnummerREF200AU
€ 6,623
Each (In a Tube of 75)
Aantal stuks
Single 100µA 3 40V 500MΩ 40V - SOIC 8 - - - - -
Nieuw
RS-stocknr. 208-8575
FabrikantnummerLM334MX/NOPB
€ 0,358
Each (On a Reel of 2500)
Aantal stuks
- 1mA 1 40V - 0.8V - SOIC 8 - - - - -
RS-stocknr. 858-0898
FabrikantnummerLT3092ETS8#TRMPBF
FabrikantAnalog Devices
€ 3,656
Each (In a Pack of 5)
Aantal stuks
Single - 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
RS-stocknr. 168-9536
FabrikantnummerAL5809-120QP1-7
FabrikantDiodesZetex
€ 0,203
Each (On a Reel of 3000)
Aantal stuks
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
RS-stocknr. 133-3334
FabrikantnummerAL5809-30QP1-7
FabrikantDiodesZetex
€ 0,371
Each (In a Pack of 20)
Aantal stuks
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C