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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Description Prix 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
N° de stock RS 858-0898
Référence fabricantLT3092ETS8#TRMPBF
3,656 €
Each (In a Pack of 5)
Unité
Single - 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
N° de stock RS 168-9536
Référence fabricantAL5809-120QP1-7
MarqueDiodesZetex
0,203 €
Each (On a Reel of 3000)
Unité
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
Nouveau
N° de stock RS 208-8576
Référence fabricantLM334MX/NOPB
0,627 €
Each (In a Pack of 25)
Unité
- 1mA 1 40V - 0.8V - SOIC 8 - - - - -
N° de stock RS 761-5472
Référence fabricantLM234Z-3/NOPB
2,378 €
Each (In a Pack of 5)
Unité
Single - 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C
N° de stock RS 822-5869
Référence fabricantLT3092IST#PBF
4,03 €
Each (In a Pack of 2)
Unité
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C
N° de stock RS 761-8627
Référence fabricantLT3092ITS8#TRMPBF
4,03 €
Each
Unité
Single - 1 40V - - Surface Mount SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
N° de stock RS 168-9540
Référence fabricantAL5809-50QP1-7
MarqueDiodesZetex
0,18 €
Each (On a Reel of 3000)
Unité
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
N° de stock RS 535-9082
Référence fabricantLM334M/NOPB
0,906 €
Each (In a Pack of 5)
Unité
Single - 1 40V - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm +70 °C
N° de stock RS 133-3335
Référence fabricantAL5809-50QP1-7
MarqueDiodesZetex
0,371 €
Each (In a Pack of 20)
Unité
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
N° de stock RS 822-5901
Référence fabricantLT3092IDD#PBF
3,62 €
Each (In a Pack of 2)
Unité
Single - 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C
N° de stock RS 133-3334
Référence fabricantAL5809-30QP1-7
MarqueDiodesZetex
0,371 €
Each (In a Pack of 20)
Unité
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C