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 diodesconstant 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 driversand can be used to replace holding coils in telephone connection devices.

You are viewing 1 - 20 of 47 results
Display:
Results per page
20
  • 20
  • 50
  • 100
Price
(Price shown excludes VAT)
Part Details Brand 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 Minimum Operating Temperature
SEMITEC E-101 Constant Current Diode, 0.5V max, 2-Pin SEMITEC Single - 1 100V 6MΩ 0.5V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-102 Constant Current Diode, 1.7V max, 2-Pin SEMITEC Single - 1 100V 0.65MΩ 1.7V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-103 Constant Current Diode, 3.5V max, 2-Pin SEMITEC Single - 1 30V 0.17MΩ 3.5V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-123 Constant Current Diode, 3.8V max, 2-Pin SEMITEC Single - 1 30V 0.08MΩ 3.8V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-153 Constant Current Diode, 4.3V max, 2-Pin SEMITEC Single - 1 25V 0.03MΩ 4.3V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-202 Constant Current Diode, 2.3V max, 2-Pin SEMITEC Single - 1 100V 0.25MΩ 2.3V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-272 Constant Current Diode, 2.7V max, 2-Pin SEMITEC Single - 1 100V 0.15MΩ 2.7V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-301 Constant Current Diode, 0.8V max, 2-Pin SEMITEC Single - 1 100V 4MΩ 0.8V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-352 Constant Current Diode, 3.2V max, 2-Pin SEMITEC Single - 1 100V 0.1MΩ 3.2V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-452 Constant Current Diode, 3.7V max, 2-Pin SEMITEC Single - 1 100V 0.07MΩ 3.7V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-501 Constant Current Diode, 1.1V max, 2-Pin SEMITEC Single - 1 100V 2MΩ 1.1V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-562 Constant Current Diode, 4.5V max, 2-Pin SEMITEC Single - 1 100V 0.04MΩ 4.5V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC E-822 Constant Current Diode, 3.1V max, 2-Pin SEMITEC Single - 1 30V 0.32MΩ 3.1V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C -30 °C
SEMITEC S-103T Constant Current Diode, 12mA, 3.5V max, 2-Pin SMD
  • £ 0.189
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
SEMITEC Single 12mA 1 50V - 3.5V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C -40 °C
SEMITEC S-123T Constant Current Diode, 14.4mA, 3.8V max, 2-Pin SMD
  • £ 0.219
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
SEMITEC Single 14.4mA 1 50V - 3.8V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C -40 °C
SEMITEC S-153T Constant Current Diode, 18mA, 4.3V max, 2-Pin SMD
  • £ 0.189
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
SEMITEC Single 18mA 1 50V - 4.3V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C -40 °C
SEMITEC S-183T Constant Current Diode, 20mA, 4.6V max, 2-Pin SMD
  • £ 0.189
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
SEMITEC Single 20mA 1 40V - 4.6V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C -40 °C
SEMITEC S-562T Constant Current Diode, 6.5mA, 4.5V max, 2-Pin SMD
  • £ 0.189
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
SEMITEC Single 6.5mA 1 100V - 4.5V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C -40 °C
Nexperia PSSI2021SAY,115 Constant Current Diode, 50mA, 73V max, 5-Pin SC-88A
  • £ 0.101
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
Nexperia Single 50mA 2 75V - 73V Surface Mount SC-88A 5 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm +150 °C -65 °C
DiodesZetex AP2502KTR-G1 Constant Current Diode, 6-Pin SOT-23 DiodesZetex Single - 1 6V - - Surface Mount SOT-23 6 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm +85 °C -40 °C
Check Our Stock Volumes
Enter the quantity you require and click 'Check'.
. This information is updated daily so availability may vary at time of order placement.
RS Stock No:
I'm looking for 
Compare list full
You can only compare 8 products at a time

View or remove your products on your Compare page
You are viewing 1 - 20 of 47 results