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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Microchip PAC1954T-E/4MX 450 μA Power Monitor 16-Pin VQFN 5.5V
RS Stock No.764-323BrandMicrochipManufacturers Part No.PAC1954T-E/4MX

€ 5,630.07

€ 1.706 Each (Supplied as a Tape) (ex VAT)

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Microchip
Power Monitor
Power Path Controller
±1 %
Surface Mount
VQFN
16
2.7V
5.5V
-
3mm
RoHS
PAC1954
0.9mm
125°C
-40°C
AEC-Q100
450μA
Nexperia 370 μA Constant Current Diode 5-Pin SC-88 75 V
RS Stock No.170-4833BrandNexperiaManufacturers Part No.PSSI2021SAY,115

€ 412.37

€ 0.137 Each (On a Reel of 3000) (ex VAT)

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

€ 4.00

€ 0.20 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
-
3.1mm
No
BCR421
1.3mm
150°C
-55°C
AEC-Q100
1.2mA

€ 3.86

€ 0.772 Each (In a Pack of 5) (ex VAT)

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

€ 14.01

€ 2.802 Each (In a Pack of 5) (ex VAT)

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Texas Instruments
Programmable Current Source
Current Regulator
±3 %
Through Hole
TO-92
3
1V
40V
Current
5.2mm
No
LM234
5.2mm
100°C
-25°C
No
10mA
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

€ 5.11

€ 0.255 Each (In a Pack of 20) (ex VAT)

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

€ 527.25

€ 7.03 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
5mm
No
REF200
1.75mm
85°C
-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

€ 8.85

€ 0.442 Each (In a Pack of 20) (ex VAT)

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

€ 9.96

€ 9.96 Each (ex VAT)

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

€ 4.71

€ 0.943 Each (In a Pack of 5) (ex VAT)

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

€ 5.15

€ 1.03 Each (In a Pack of 5) (ex VAT)

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

€ 384.65

€ 0.128 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
-
3.1mm
No
BCR421
1.3mm
150°C
-55°C
AEC-Q100
1.2mA
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
RS Stock No.168-9536BrandDiodesZetexManufacturers Part No.AL5809-120QP1-7

€ 786.62

€ 0.262 Each (On a Reel of 3000) (ex VAT)

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

€ 675.73

€ 0.225 Each (On a Reel of 3000) (ex VAT)

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DiodesZetex
Constant Current Diode
2-Terminal Constant Current LED Driver
±5 %
Surface
PDI123
2
2.5V
60V
Low Side, High Side
3mm
No
AL5809
1mm
150°C
-40°C
No
150mA
DiodesZetex 20 mA Constant Current Diode 6-Pin SOT-23 6 V
RS Stock No.165-8354BrandDiodesZetexManufacturers Part No.AP2502KTR-G1

€ 391.58

€ 0.131 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
-
3.02mm
No
AP2502
1.3mm
85°C
-40°C
No
20mA
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

€ 5.80

€ 0.29 Each (In a Pack of 20) (ex VAT)

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DiodesZetex
Constant Current Diode
2-Terminal Constant Current LED Driver
±5 %
Surface
PDI123
2
2.5V
60V
Low Side, High Side
3mm
No
AL5809
1mm
150°C
-40°C
No
150mA
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

€ 6.86

€ 0.229 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
-
3.02mm
No
AP2502
1.3mm
85°C
-40°C
No
20mA
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

€ 3.81

€ 0.152 Each (In a Pack of 25) (ex VAT)

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

€ 727.71

€ 0.404 Each (In a Box of 1800) (ex VAT)

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Texas Instruments
Constant Current Diode
Current Regulator
±3 %
Through Hole
TO-92
3
1V
40V
Current
5.2mm
No
LM334
5.2mm
70°C
0°C
No
10mA
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.121-8832BrandTexas InstrumentsManufacturers Part No.LM334M/NOPB

€ 50.92

€ 0.536 Each (In a Tube of 95) (ex VAT)

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Texas Instruments
Constant Current Diode
Current Regulator
±3 %
Surface
SOIC
8
1V
40V
Current
4.9mm
No
LM334
1.45mm
70°C
0°C
No
10mA