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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Nexperia 370 μA Constant Current Diode 5-Pin SC-88 75 V
RS Stock No.170-4833BrandNexperiaManufacturers Part No.PSSI2021SAY,115

292.320 OMR

0.098 OMR Each (On a Reel of 3000) (ex VAT)

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Nexperia
Constant Current Diode
-
Constant Current Source
Surface
SC-88
5
-
75V
-
150°C
1.35 mm
PSSI2021SAY
2.2mm
No
1mm
-65°C
370μA
No

2.314 OMR

0.116 OMR Each (In a Pack of 20) (ex VAT)

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DiodesZetex
Constant Current Diode
-
Linear LED CONSTANT CURRENT REGULATOR
Surface
SOT-26
6
-
40V
-
150°C
1.7 mm
BCR421
3.1mm
No
1.3mm
-55°C
1.2mA
AEC-Q100

2.223 OMR

0.444 OMR Each (In a Pack of 5) (ex VAT)

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Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Through Hole
TO-92
3
1V
40V
Current
70°C
4.19 mm
LM334
5.2mm
No
5.2mm
0°C
10mA
No

8.130 OMR

1.626 OMR Each (In a Pack of 5) (ex VAT)

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Texas Instruments
Programmable Current Source
±3 %
Current Regulator
Through Hole
TO-92
3
1V
40V
Current
100°C
4.19 mm
LM234
5.2mm
No
5.2mm
-25°C
10mA
No
Power Integrations LNK302GN Buck Converter 8-Pin SMD
RS Stock No.146-5623BrandPower IntegrationsManufacturers Part No.LNK302GN

14.007 OMR

0.280 OMR Each (In a Tube of 50) (ex VAT)

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Power Integrations
Buck Converter
-
-
-
SMD
8
-
-
-
150°C
3.68 mm
-
9.83mm
-
3.68mm
-40°C
-
-
DiodesZetex AL5809-30QP1-7 150 mA Constant Current Diode 2-Pin PDI123 60 V
Also available in industry standard packaging
RS Stock No.133-3334BrandDiodesZetexManufacturers Part No.AL5809-30QP1-7

3.410 OMR

0.170 OMR Each (In a Pack of 20) (ex VAT)

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DiodesZetex
Constant Current Diode
±5 %
2-Terminal Constant Current LED Driver
Surface
PDI123
2
2.5V
60V
Low Side, High Side
150°C
1.93 mm
AL5809
3mm
No
1mm
-40°C
150mA
No
Texas Instruments Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.197-7486BrandTexas InstrumentsManufacturers Part No.REF200AU

326.576 OMR

4.354 OMR Each (In a Tube of 75) (ex VAT)

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Texas Instruments
Constant Current Diode
±0.5 %
-
Surface
SOIC
8
2.5V
40V
Current
85°C
3.98 mm
REF200
5mm
No
1.75mm
-25°C
-
No
DiodesZetex AL5809-50QP1-7 150 mA Constant Current Diode 2-Pin PDI123 60 V
Also available in industry standard packaging
RS Stock No.133-3335BrandDiodesZetexManufacturers Part No.AL5809-50QP1-7

5.116 OMR

0.256 OMR Each (In a Pack of 20) (ex VAT)

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DiodesZetex
Constant Current Diode
±5 %
Constant Current Regulator (CCR)
Surface
PDI123
2
2.5V
60V
High Side, Low Side
150°C
1.93 mm
AL5809Q
3mm
TS16949, AEC-Q100, Halogen and Antimony Free, RoHS
1mm
-40°C
150mA
AEC-Q100 Grade 3

5.773 OMR

5.773 OMR Each (ex VAT)

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Texas Instruments
Constant Current Diode
±0.5 %
-
Surface
SOIC
8
2.5V
40V
Current
85°C
3.98 mm
REF200
5mm
No
1.75mm
-25°C
-
No

2.680 OMR

0.536 OMR Each (In a Pack of 5) (ex VAT)

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Texas Instruments
Programmable Current Source
±3 %
Current Regulator
Through Hole
TO-92
3
1V
30V
Current
100°C
4.19 mm
LM234
5.2mm
No
5.2mm
-25°C
10mA
No

2.984 OMR

0.596 OMR Each (In a Pack of 5) (ex VAT)

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Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Surface
SOIC
8
1V
40V
Current
70°C
3.9 mm
LM334
4.9mm
No
1.45mm
0°C
10mA
No
DiodesZetex 1.2 mA Constant Current Diode 6-Pin SOT-26 40 V
RS Stock No.168-9550BrandDiodesZetexManufacturers Part No.BCR421UW6Q-7

274.050 OMR

0.091 OMR Each (On a Reel of 3000) (ex VAT)

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DiodesZetex
Constant Current Diode
-
Linear LED CONSTANT CURRENT REGULATOR
Surface
SOT-26
6
-
40V
-
150°C
1.7 mm
BCR421
3.1mm
No
1.3mm
-55°C
1.2mA
AEC-Q100
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
RS Stock No.168-9536BrandDiodesZetexManufacturers Part No.AL5809-120QP1-7

548.100 OMR

0.183 OMR Each (On a Reel of 3000) (ex VAT)

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DiodesZetex
Constant Current Diode
±5 %
2-Terminal Constant Current LED Driver
Surface
PDI123
2
2.5V
60V
Low Side, High Side
150°C
1.93 mm
AL5809
3mm
No
1mm
-40°C
150mA
No
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
RS Stock No.168-9539BrandDiodesZetexManufacturers Part No.AL5809-30QP1-7

493.290 OMR

0.165 OMR Each (On a Reel of 3000) (ex VAT)

Add to basket
DiodesZetex
Constant Current Diode
±5 %
2-Terminal Constant Current LED Driver
Surface
PDI123
2
2.5V
60V
Low Side, High Side
150°C
1.93 mm
AL5809
3mm
No
1mm
-40°C
150mA
No
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
RS Stock No.168-9540BrandDiodesZetexManufacturers Part No.AL5809-50QP1-7

493.290 OMR

0.165 OMR Each (On a Reel of 3000) (ex VAT)

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DiodesZetex
Constant Current Diode
±5 %
Constant Current Regulator (CCR)
Surface
PDI123
2
2.5V
60V
High Side, Low Side
150°C
1.93 mm
AL5809Q
3mm
TS16949, AEC-Q100, Halogen and Antimony Free, RoHS
1mm
-40°C
150mA
AEC-Q100 Grade 3
DiodesZetex 20 mA Constant Current Diode 6-Pin SOT-23 6 V
RS Stock No.165-8354BrandDiodesZetexManufacturers Part No.AP2502KTR-G1

255.780 OMR

0.085 OMR Each (On a Reel of 3000) (ex VAT)

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DiodesZetex
Constant Current Diode
-
4-Channel Linear Constant Current Sink
Surface
SOT-23
6
2V
6V
-
85°C
1.7 mm
AP2502
3.02mm
No
1.3mm
-40°C
20mA
No
DiodesZetex AL5809-120QP1-7 150 mA Constant Current Diode 2-Pin PDI123 60 V
Also available in industry standard packaging
RS Stock No.133-3331BrandDiodesZetexManufacturers Part No.AL5809-120QP1-7

3.654 OMR

0.183 OMR Each (In a Pack of 20) (ex VAT)

Add to basket
DiodesZetex
Constant Current Diode
±5 %
2-Terminal Constant Current LED Driver
Surface
PDI123
2
2.5V
60V
Low Side, High Side
150°C
1.93 mm
AL5809
3mm
No
1mm
-40°C
150mA
No
DiodesZetex AP2502KTR-G1 20 mA Constant Current Diode 6-Pin SOT-23 6 V
Also available in industry standard packaging
RS Stock No.921-0477BrandDiodesZetexManufacturers Part No.AP2502KTR-G1

4.019 OMR

0.134 OMR Each (In a Pack of 30) (ex VAT)

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DiodesZetex
Constant Current Diode
-
4-Channel Linear Constant Current Sink
Surface
SOT-23
6
2V
6V
-
85°C
1.7 mm
AP2502
3.02mm
No
1.3mm
-40°C
20mA
No
Nexperia PSSI2021SAY,115 370 μA Constant Current Diode 5-Pin SC-88 75 V
Also available in industry standard packaging
RS Stock No.170-5384BrandNexperiaManufacturers Part No.PSSI2021SAY,115

2.436 OMR

0.098 OMR Each (In a Pack of 25) (ex VAT)

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Nexperia
Constant Current Diode
-
Constant Current Source
Surface
SC-88
5
-
75V
-
150°C
1.35 mm
PSSI2021SAY
2.2mm
No
1mm
-65°C
370μA
No
Texas Instruments 10 mA Constant Current Diode 3-Pin TO-92 40 V
RS Stock No.121-8833BrandTexas InstrumentsManufacturers Part No.LM334Z/NOPB

515.214 OMR

0.287 OMR Each (In a Box of 1800) (ex VAT)

Add to basket
Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Through Hole
TO-92
3
1V
40V
Current
70°C
4.19 mm
LM334
5.2mm
No
5.2mm
0°C
10mA
No