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 Diode Configuration Maximum Regulator Current Number of Elements per Chip Maximum Peak Operating Voltage Maximum Limiting Voltage Package Type Pin Count Dimensions Length Width Height Maximum Operating Temperature Minimum Operating Temperature Mounting Type
RS Stock No. 761-8627
Mfr. Part No.LT3092ITS8#TRMPBF
€5.35
Each
units
Single - 1 40V - SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C Surface Mount
RS Stock No. 920-0060
Mfr. Part No.LT3092IST#PBF
€3.009
Each (In a Tube of 78)
units
Single - 1 - - SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C -40 °C Surface Mount
RS Stock No. 822-5869
Mfr. Part No.LT3092IST#PBF
€4.495
Each (In a Pack of 2)
units
Single - 1 - - SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C -40 °C Surface Mount
RS Stock No. 145-0208
Mfr. Part No.LT3092EST#PBF
€3.104
Each (In a Tube of 78)
units
Single - 1 - - SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C -40 °C Surface Mount
RS Stock No. 822-5901
Mfr. Part No.LT3092IDD#PBF
€3.695
Each (In a Pack of 2)
units
Single - 1 - - DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C -40 °C Surface Mount
RS Stock No. 155-7505
Mfr. Part No.LT3092IDD#PBF
€2.317
Each (In a Tube of 121)
units
Single - 1 - - DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C -40 °C Surface Mount
RS Stock No. 779-9615
Mfr. Part No.LT3092EST#PBF
€3.735
Each (In a Pack of 2)
units
Single - 1 - - SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C -40 °C Surface Mount
RS Stock No. 826-9288
Mfr. Part No.BCR410WH6327XTSA1
BrandInfineon
€0.108
Each (In a Pack of 100)
units
Single - 1 - - SOT-343 4 2 x 1.25 x 0.8mm 2mm 1.25mm 0.8mm +150 °C - Surface Mount
RS Stock No. 168-9540
Mfr. Part No.AL5809-50QP1-7
€0.173
Each (On a Reel of 3000)
units
Single - 1 60V - PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C Surface Mount
RS Stock No. 165-5616
Mfr. Part No.BCR410WH6327XTSA1
BrandInfineon
€0.075
Each (On a Reel of 3000)
units
Single - 1 - - SOT-343 4 2 x 1.25 x 0.8mm 2mm 1.25mm 0.8mm +150 °C - Surface Mount
RS Stock No. 165-8354
Mfr. Part No.AP2502KTR-G1
€0.119
Each (On a Reel of 3000)
units
Single - 1 6V - SOT-23 6 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm +85 °C -40 °C Surface Mount
RS Stock No. 921-0477
Mfr. Part No.AP2502KTR-G1
€0.334
Each (In a Pack of 30)
units
Single - 1 6V - SOT-23 6 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm +85 °C -40 °C Surface Mount
RS Stock No. 133-3335
Mfr. Part No.AL5809-50QP1-7
€0.165
Each (In a Pack of 20)
units
Single - 1 60V - PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C Surface Mount
RS Stock No. 858-0898
Mfr. Part No.LT3092ETS8#TRMPBF
€3.854
Each (In a Pack of 5)
units
Single - 1 40V - TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C Surface Mount
RS Stock No. 168-9536
Mfr. Part No.AL5809-120QP1-7
€0.197
Each (On a Reel of 3000)
units
Single - 1 60V - PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C Surface Mount
RS Stock No. 919-9238
Mfr. Part No.LT3092ITS8TRMPBF
€2.38
Each (On a Reel of 500)
units
Single - 1 40V - SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C Surface Mount
RS Stock No. 133-3331
Mfr. Part No.AL5809-120QP1-7
€0.442
Each (In a Pack of 20)
units
Single - 1 60V - PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C -40 °C Surface Mount
RS Stock No. 156-5698
Mfr. Part No.LT3092ETS8#TRMPBF
€2.158
Each (On a Reel of 500)
units
Single - 1 40V - TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C -40 °C Surface Mount
RS Stock No. 133-3345
Mfr. Part No.BCR421UW6Q-7
€0.302
Each (In a Pack of 20)
units
Single - 1 40V - SOT-26 6 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm +150 °C -55 °C Surface Mount
RS Stock No. 168-9550
Mfr. Part No.BCR421UW6Q-7
€0.108
Each (On a Reel of 3000)
units
Single - 1 40V - SOT-26 6 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm +150 °C -55 °C Surface Mount
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