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

EGP 47,160.00

EGP 15.72 Each (On a Reel of 3000) (ex VAT)

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

EGP 358.00

EGP 17.90 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
-
BCR421
No
1.3mm
3.1mm
150°C
1.7 mm
-55°C
1.2mA
AEC-Q100

EGP 306.15

EGP 61.23 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
LM334
No
5.2mm
5.2mm
70°C
4.19 mm
0°C
10mA
No

EGP 1,024.95

EGP 204.99 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
LM234
No
5.2mm
5.2mm
100°C
4.19 mm
-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

EGP 541.40

EGP 27.07 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
AL5809
No
1mm
3mm
150°C
1.93 mm
-40°C
150mA
No
Texas Instruments Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.197-7486BrandTexas InstrumentsManufacturers Part No.REF200AU

EGP 53,288.25

EGP 710.51 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
REF200
No
1.75mm
5mm
85°C
3.98 mm
-25°C
-
No

EGP 839.18

EGP 839.18 Each (ex VAT)

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

EGP 490.90

EGP 98.18 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
LM234
No
5.2mm
5.2mm
100°C
4.19 mm
-25°C
10mA
No

EGP 455.55

EGP 91.11 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
LM334
No
1.45mm
4.9mm
70°C
3.9 mm
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

EGP 43,620.00

EGP 14.54 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
-
BCR421
No
1.3mm
3.1mm
150°C
1.7 mm
-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

EGP 89,280.00

EGP 29.76 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
AL5809
No
1mm
3mm
150°C
1.93 mm
-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

EGP 78,630.00

EGP 26.21 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
AL5809
No
1mm
3mm
150°C
1.93 mm
-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

EGP 41,340.00

EGP 13.78 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
-
AP2502
No
1.3mm
3.02mm
85°C
1.7 mm
-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

EGP 579.80

EGP 28.99 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
AL5809
No
1mm
3mm
150°C
1.93 mm
-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

EGP 745.50

EGP 24.85 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
-
AP2502
No
1.3mm
3.02mm
85°C
1.7 mm
-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

EGP 395.75

EGP 15.83 Each (In a Pack of 25) (ex VAT)

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

EGP 69,498.00

EGP 38.61 Each (In a Box of 1800) (ex VAT)

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Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Through Hole
TO-92
3
1V
40V
Current
LM334
No
5.2mm
5.2mm
70°C
4.19 mm
0°C
10mA
No
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.208-8575BrandTexas InstrumentsManufacturers Part No.LM334MX/NOPB

EGP 96,725.00

EGP 38.69 Each (On a Reel of 2500) (ex VAT)

Add to basket
Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Surface
SOIC
8
1V
40V
Current
LM334
No
1.75mm
5mm
70°C
3.98 mm
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

EGP 5,795.00

EGP 61.00 Each (In a Tube of 95) (ex VAT)

Add to basket
Texas Instruments
Constant Current Diode
±3 %
Current Regulator
Surface
SOIC
8
1V
40V
Current
LM334
No
1.45mm
4.9mm
70°C
3.9 mm
0°C
10mA
No
Texas Instruments 10 mA Programmable Current Source 3-Pin TO-92 30 V
RS Stock No.921-6813BrandTexas InstrumentsManufacturers Part No.LM234Z-6/NOPB

EGP 112,212.00

EGP 62.34 Each (In a Tube of 1800) (ex VAT)

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