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 Minimum Dynamic Impedance Maximum Limiting Voltage Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Temperature
RS Stock No. 858-0898
Mfr. Part No.LT3092ETS8#TRMPBF
PHP213.532
Each (In a Pack of 5)
units
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 Stock No. 761-8627
Mfr. Part No.LT3092ITS8#TRMPBF
PHP228.41
Each
units
Single - 1 40V - - Surface Mount SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
RS Stock No. 822-5901
Mfr. Part No.LT3092IDD#PBF
PHP210.505
Each (In a Pack of 2)
units
Single - 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C
RS Stock No. 155-7505
Mfr. Part No.LT3092IDD#PBF
PHP155.14
Each (In a Tube of 121)
units
Single - 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C
RS Stock No. 920-0060
Mfr. Part No.LT3092IST#PBF
PHP158.646
Each (In a Tube of 78)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C
RS Stock No. 156-5698
Mfr. Part No.LT3092ETS8#TRMPBF
PHP143.646
Each (On a Reel of 500)
units
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 Stock No. 145-0208
Mfr. Part No.LT3092EST#PBF
PHP148.641
Each (In a Tube of 78)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C
RS Stock No. 822-5869
Mfr. Part No.LT3092IST#PBF
PHP222.85
Each (In a Pack of 2)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C
RS Stock No. 779-9615
Mfr. Part No.LT3092EST#PBF
PHP201.095
Each (In a Pack of 2)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C
RS Stock No. 919-9238
Mfr. Part No.LT3092ITS8TRMPBF
PHP146.621
Each (On a Reel of 500)
units
Single - 1 40V - - Surface Mount SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C