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...

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Texas Instruments REF200AU Constant Current Diode, 100μA, 40V max, 8-Pin SOIC
RS Stock No.: 197-7486Brand: Texas InstrumentsManufacturers Part No.: REF200AU

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Texas Instruments
3
100µA
40V
40V
-
SOIC
8
-
-
-
-
-
-

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Texas Instruments
3
100µA
40V
40V
-
SOIC
8
-
-
-
-
-
-
Texas Instruments LM334MX/NOPB Constant Current Diode, 1mA, 0.8V max, 8-Pin SOIC
RS Stock No.: 208-8575Brand: Texas InstrumentsManufacturers Part No.: LM334MX/NOPB

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Texas Instruments
1
1mA
40V
0.8V
-
SOIC
8
-
-
-
-
-
-

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Texas Instruments
1
1mA
40V
0.8V
-
SOIC
8
-
-
-
-
-
-
Nexperia PSSI2021SAY,115 Constant Current Diode, 50mA, 73V max, 5-Pin SC-88A
RS Stock No.: 170-4833Brand: NexperiaManufacturers Part No.: PSSI2021SAY,115

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Nexperia
2
50mA
75V
73V
Surface Mount
SC-88A
5
2.2 x 1.35 x 1mm
2.2mm
1.35mm
1mm
+150 °C
-65 °C
DiodesZetex BCR421UW6Q-7 Constant Current Diode, 10mA, 6-Pin SOT-26
Also available in industry standard packaging
RS Stock No.: 133-3345Brand: DiodesZetexManufacturers Part No.: BCR421UW6Q-7

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DiodesZetex
1
10mA
40V
-
Surface Mount
SOT-26
6
3.1 x 1.7 x 1.3mm
3.1mm
1.7mm
1.3mm
+150 °C
-55 °C

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Texas Instruments
1
10mA
40V
-
Through Hole
TO-92
3
5.2 x 4.19 x 5.2mm
5.2mm
4.19mm
5.2mm
+70 °C
0 °C

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Texas Instruments
1
10mA
40V
-
Through Hole
TO-92
3
5.2 x 4.19 x 5.2mm
5.2mm
4.19mm
5.2mm
+100 °C
-25 °C
DiodesZetex AL5809-30QP1-7 Constant Current Diode, 30mA, 2-Pin PDI123
Also available in industry standard packaging
RS Stock No.: 133-3334Brand: DiodesZetexManufacturers Part No.: AL5809-30QP1-7

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DiodesZetex
1
30mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
DiodesZetex AL5809-50QP1-7 Constant Current Diode, 50mA, 2-Pin PDI123
Also available in industry standard packaging
RS Stock No.: 133-3335Brand: DiodesZetexManufacturers Part No.: AL5809-50QP1-7

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DiodesZetex
1
50mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C

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Texas Instruments
1
10mA
30V
-
Through Hole
TO-92
3
5.2 x 4.19 x 5.2mm
5.2mm
4.19mm
5.2mm
+100 °C
-25 °C

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Texas Instruments
1
10mA
40V
-
Surface Mount
SOIC
8
4.9 x 3.9 x 1.45mm
4.9mm
3.9mm
1.45mm
+70 °C
0 °C
DiodesZetex AL5809-120QP1-7 Constant Current Diode, 120mA, 2-Pin PDI123
Also available in industry standard packaging
RS Stock No.: 133-3331Brand: DiodesZetexManufacturers Part No.: AL5809-120QP1-7

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DiodesZetex
1
120mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
DiodesZetex AL5809-120QP1-7 Constant Current Diode, 120mA, 2-Pin PDI123
RS Stock No.: 168-9536Brand: DiodesZetexManufacturers Part No.: AL5809-120QP1-7

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DiodesZetex
1
120mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
DiodesZetex AL5809-30QP1-7 Constant Current Diode, 30mA, 2-Pin PDI123
RS Stock No.: 168-9539Brand: DiodesZetexManufacturers Part No.: AL5809-30QP1-7

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DiodesZetex
1
30mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
DiodesZetex AL5809-50QP1-7 Constant Current Diode, 50mA, 2-Pin PDI123
RS Stock No.: 168-9540Brand: DiodesZetexManufacturers Part No.: AL5809-50QP1-7

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DiodesZetex
1
50mA
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
DiodesZetex AP2502KTR-G1 Constant Current Diode, 6-Pin SOT-23
Also available in industry standard packaging
RS Stock No.: 921-0477Brand: DiodesZetexManufacturers Part No.: AP2502KTR-G1

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DiodesZetex
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
DiodesZetex AP2502KTR-G1 Constant Current Diode, 6-Pin SOT-23
RS Stock No.: 165-8354Brand: DiodesZetexManufacturers Part No.: AP2502KTR-G1

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DiodesZetex
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
DiodesZetex BCR421UW6Q-7 Constant Current Diode, 10mA, 6-Pin SOT-26
RS Stock No.: 168-9550Brand: DiodesZetexManufacturers Part No.: BCR421UW6Q-7

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DiodesZetex
1
10mA
40V
-
Surface Mount
SOT-26
6
3.1 x 1.7 x 1.3mm
3.1mm
1.7mm
1.3mm
+150 °C
-55 °C

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Nexperia
2
50mA
75V
73V
Surface Mount
SC-88A
5
2.2 x 1.35 x 1mm
2.2mm
1.35mm
1mm
+150 °C
-65 °C