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

AED 30,216.53

AED 9.156 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
-
RoHS
0.9mm
3mm
PAC1954
125°C
-40°C
450μA
AEC-Q100
Nexperia 370 μA Constant Current Diode 5-Pin SC-88 75 V
RS Stock No.170-4833BrandNexperiaManufacturers Part No.PSSI2021SAY,115

AED 2,696.40

AED 0.899 Each (On a Reel of 3000) (ex VAT)

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

AED 21.35

AED 1.067 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
-
No
1.3mm
3.1mm
BCR421
150°C
-55°C
1.2mA
AEC-Q100

AED 21.06

AED 4.213 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
No
5.2mm
5.2mm
LM334
70°C
0°C
10mA
No

AED 73.58

AED 14.718 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
No
5.2mm
5.2mm
LM234
100°C
-25°C
10mA
No
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

AED 30.33

AED 1.516 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
No
1mm
3mm
AL5809
150°C
-40°C
150mA
No
Texas Instruments Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.197-7486BrandTexas InstrumentsManufacturers Part No.REF200AU

AED 3,025.03

AED 40.334 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
No
1.75mm
5mm
REF200
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

AED 46.06

AED 2.304 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
TS16949, AEC-Q100, Halogen and Antimony Free, RoHS
1mm
3mm
AL5809Q
150°C
-40°C
150mA
AEC-Q100 Grade 3

AED 52.30

AED 52.30 Each (ex VAT)

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

AED 24.72

AED 4.943 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
No
5.2mm
5.2mm
LM234
100°C
-25°C
10mA
No

AED 31.74

AED 6.348 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
No
1.45mm
4.9mm
LM334
70°C
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

AED 2,527.88

AED 0.842 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
-
No
1.3mm
3.1mm
BCR421
150°C
-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

AED 5,055.75

AED 1.685 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
No
1mm
3mm
AL5809
150°C
-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

AED 4,550.18

AED 1.516 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
No
1mm
3mm
AL5809
150°C
-40°C
150mA
No
DiodesZetex 20 mA Constant Current Diode 6-Pin SOT-23 6 V
RS Stock No.165-8354BrandDiodesZetexManufacturers Part No.AP2502KTR-G1

AED 2,359.35

AED 0.786 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
-
No
1.3mm
3.02mm
AP2502
85°C
-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

AED 33.70

AED 1.685 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
No
1mm
3mm
AL5809
150°C
-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

AED 35.39

AED 1.18 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
-
No
1.3mm
3.02mm
AP2502
85°C
-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

AED 22.47

AED 0.899 Each (In a Pack of 25) (ex VAT)

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

AED 4,752.40

AED 2.64 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
No
5.2mm
5.2mm
LM334
70°C
0°C
10mA
No
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.121-8832BrandTexas InstrumentsManufacturers Part No.LM334M/NOPB

AED 336.21

AED 3.539 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
No
1.45mm
4.9mm
LM334
70°C
0°C
10mA
No