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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. 197-7486
Brand Texas Instruments
Manufacturers Part No. REF200AU

$ 13.231

Each (In a Tube of 75)

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Texas Instruments
100µA
3
40V
40V
-
SOIC
8
-
-
-
-
-
-
Texas Instruments REF200AU Constant Current Diode, 100μA, 40V max, 8-Pin SOIC
Also available in industry standard packaging
RS Stock No. 197-7487
Brand Texas Instruments
Manufacturers Part No. REF200AU

$ 15.08

Each

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Texas Instruments
100µA
3
40V
40V
-
SOIC
8
-
-
-
-
-
-
Texas Instruments LM334MX/NOPB Constant Current Diode, 1mA, 0.8V max, 8-Pin SOIC
Also available in industry standard packaging
RS Stock No. 208-8576
Brand Texas Instruments
Manufacturers Part No. LM334MX/NOPB

$ 1.42

Each (In a Pack of 25)

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

$ 0.948

Each (On a Reel of 2500)

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

$ 0.178

Each (On a Reel of 3000)

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Nexperia
50mA
2
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. 133-3345
Brand DiodesZetex
Manufacturers Part No. BCR421UW6Q-7

$ 0.422

Each (In a Pack of 20)

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DiodesZetex
10mA
1
40V
-
Surface Mount
SOT-26
6
3.1 x 1.7 x 1.3mm
3.1mm
1.7mm
1.3mm
+150 °C
-55 °C
Texas Instruments LM334Z/NOPB Constant Current Diode, 10mA, 3-Pin TO-92
Also available in industry standard packaging
RS Stock No. 535-9098
Brand Texas Instruments
Manufacturers Part No. LM334Z/NOPB

$ 1.478

Each (In a Pack of 5)

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Texas Instruments
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
Texas Instruments LM234Z-3/NOPB Programmable Current Source, 10mA, 3-Pin TO-92
Also available in industry standard packaging
RS Stock No. 761-5472
Brand Texas Instruments
Manufacturers Part No. LM234Z-3/NOPB

$ 4.188

Each (In a Pack of 5)

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Texas Instruments
10mA
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
Analog Devices LT3092EST#PBF Programmable Current Source, 200mA, 3 + Tab-Pin SOT-223
RS Stock No. 779-9615
Brand Analog Devices
Manufacturers Part No. LT3092EST#PBF

$ 7.519

Each (In a Pack of 2)

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Analog Devices
200mA
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
DiodesZetex AL5809-30QP1-7 Constant Current Diode, 30mA, 2-Pin PDI123
Also available in industry standard packaging
RS Stock No. 133-3334
Brand DiodesZetex
Manufacturers Part No. AL5809-30QP1-7

$ 0.648

Each (In a Pack of 20)

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DiodesZetex
30mA
1
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. 133-3335
Brand DiodesZetex
Manufacturers Part No. AL5809-50QP1-7

$ 0.648

Each (In a Pack of 20)

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DiodesZetex
50mA
1
60V
-
Surface Mount
PDI123
2
3 x 1.93 x 1mm
3mm
1.93mm
1mm
+150 °C
-40 °C
Analog Devices LT3092IDD#PBF Programmable Current Source, 200mA, 8-Pin DFN
Also available in industry standard packaging
RS Stock No. 822-5901
Brand Analog Devices
Manufacturers Part No. LT3092IDD#PBF

$ 7.853

Each (In a Pack of 2)

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Analog Devices
200mA
1
40V
-
Surface Mount
DFN
8
3 x 3 x 0.75mm
3mm
3mm
0.75mm
+125 °C
-40 °C
Texas Instruments LM234Z-6/NOPB Programmable Current Source, 10mA, 3-Pin TO-92
Also available in industry standard packaging
RS Stock No. 761-5476
Brand Texas Instruments
Manufacturers Part No. LM234Z-6/NOPB

$ 2.771

Each (In a Pack of 5)

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Texas Instruments
10mA
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
Analog Devices LT3092ETS8#TRMPBF Programmable Current Source, 200mA, 8-Pin TSOT-23
RS Stock No. 858-0898
Brand Analog Devices
Manufacturers Part No. LT3092ETS8#TRMPBF

$ 6.739

Each (In a Pack of 5)

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Analog Devices
200mA
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
Texas Instruments LM334M/NOPB Constant Current Diode, 10mA, 8-Pin SOIC
Also available in industry standard packaging
RS Stock No. 535-9082
Brand Texas Instruments
Manufacturers Part No. LM334M/NOPB

$ 1.735

Each (In a Pack of 5)

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Texas Instruments
10mA
1
40V
-
Surface Mount
SOIC
8
4.9 x 3.9 x 1.45mm
4.9mm
3.9mm
1.45mm
+70 °C
0 °C
Analog Devices LT3092ETS8#TRMPBF Programmable Current Source, 200mA, 8-Pin TSOT-23
RS Stock No. 156-5698
Brand Analog Devices
Manufacturers Part No. LT3092ETS8#TRMPBF

$ 4.116

Each (On a Reel of 500)

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Analog Devices
200mA
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
DiodesZetex AL5809-120QP1-7 Constant Current Diode, 120mA, 2-Pin PDI123
Also available in industry standard packaging
RS Stock No. 133-3331
Brand DiodesZetex
Manufacturers Part No. AL5809-120QP1-7

$ 0.706

Each (In a Pack of 20)

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DiodesZetex
120mA
1
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. 168-9536
Brand DiodesZetex
Manufacturers Part No. AL5809-120QP1-7

$ 0.291

Each (On a Reel of 3000)

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DiodesZetex
120mA
1
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. 168-9539
Brand DiodesZetex
Manufacturers Part No. AL5809-30QP1-7

$ 0.267

Each (On a Reel of 3000)

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DiodesZetex
30mA
1
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. 168-9540
Brand DiodesZetex
Manufacturers Part No. AL5809-50QP1-7

$ 0.267

Each (On a Reel of 3000)

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