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.


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Description Price 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
RS stock no. 779-9615
Mfr. Part No.LT3092EST#PBF
R 75.14
Each (In a Pack of 2)
units
- 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C -40 °C
RS stock no. 145-0208
Mfr. Part No.LT3092EST#PBF
R 46.23
Each (In a Tube of 78)
units
- 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C -40 °C
RS stock no. 121-8832
Mfr. Part No.LM334M/NOPB
R 20.569
Each (In a Tube of 95)
units
- 1 40V - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm +70 °C 0 °C
RS stock no. 535-9082
Mfr. Part No.LM334M/NOPB
R 18.198
Each (In a Pack of 5)
units
- 1 40V - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm +70 °C 0 °C
RS stock no. 121-8833
Mfr. Part No.LM334Z/NOPB
R 7.013
Each (In a Box of 1800)
units
- 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +70 °C 0 °C
RS stock no. 535-9098
Mfr. Part No.LM334Z/NOPB
R 23.238
Each (In a Pack of 5)
units
10mA 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +70 °C 0 °C
RS stock no. 156-5698
Mfr. Part No.LT3092ETS8#TRMPBF
R 43.898
Each (On a Reel of 500)
units
- 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C
RS stock no. 858-0898
Mfr. Part No.LT3092ETS8#TRMPBF
R 77.548
Each (In a Pack of 5)
units
- 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C
RS stock no. 155-7505
Mfr. Part No.LT3092IDD#PBF
R 47.112
Each (In a Tube of 121)
units
- 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C -40 °C
RS stock no. 822-5901
Mfr. Part No.LT3092IDD#PBF
R 74.59
Each (In a Pack of 2)
units
- 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C -40 °C
RS stock no. 921-6813
Mfr. Part No.LM234Z-6/NOPB
R 10.799
Each (In a Tube of 1800)
units
- 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C -25 °C
RS stock no. 921-6819
Mfr. Part No.LM234Z-3/NOPB
R 23.939
Each (On a Reel of 1800)
units
- 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C -25 °C
RS stock no. 761-5472
Mfr. Part No.LM234Z-3/NOPB
R 47.476
Each (In a Pack of 5)
units
- 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C -25 °C
RS stock no. 761-5476
Mfr. Part No.LM234Z-6/NOPB
R 23.144
Each (In a Pack of 5)
units
- 1 30V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C -25 °C
RS stock no. 920-0060
Mfr. Part No.LT3092IST#PBF
R 52.224
Each (In a Tube of 78)
units
- 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C -40 °C
RS stock no. 165-8354
Mfr. Part No.AP2502KTR-G1
R 2.267
Each (On a Reel of 3000)
units
- 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
RS stock no. 133-3335
Mfr. Part No.AL5809-50QP1-7
R 7.393
Each (In a Pack of 20)
units
- 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C
RS stock no. 921-0477
Mfr. Part No.AP2502KTR-G1
R 6.467
Each (In a Pack of 30)
units
- 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
RS stock no. 168-9536
Mfr. Part No.AL5809-120QP1-7
R 3.807
Each (On a Reel of 3000)
units
- 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C
RS stock no. 761-8627
Mfr. Part No.LT3092ITS8#TRMPBF
R 84.36
Each
units
- 1 40V - - Surface Mount SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C