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

BD 3,566.838

BD 1.081 Each (Supplied as a Tape) (Exc. Vat)

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Microchip
Power Monitor
Power Path Controller
±1 %
Surface Mount
VQFN
16
2.7V
5.5V
-
125°C
3mm
0.9mm
PAC1954
RoHS
-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

BD 305.184

BD 0.101 Each (On a Reel of 3000) (Exc. Vat)

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

BD 2.543

BD 0.128 Each (In a Pack of 20) (Exc. Vat)

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

BD 2.448

BD 0.490 Each (In a Pack of 5) (Exc. Vat)

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

BD 8.869

BD 1.774 Each (In a Pack of 5) (Exc. Vat)

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

BD 3.433

BD 0.172 Each (In a Pack of 20) (Exc. 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
150°C
3mm
1mm
AL5809
No
-40°C
No
150mA
Texas Instruments Constant Current Diode 8-Pin SOIC 40 V
RS Stock No.197-7486BrandTexas InstrumentsManufacturers Part No.REF200AU

BD 354.776

BD 4.730 Each (In a Tube of 75) (Exc. Vat)

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

BD 5.595

BD 0.279 Each (In a Pack of 20) (Exc. Vat)

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

BD 6.301

BD 6.301 Each (Exc. Vat)

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

BD 2.989

BD 0.597 Each (In a Pack of 5) (Exc. Vat)

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

BD 3.275

BD 0.655 Each (In a Pack of 5) (Exc. Vat)

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

BD 286.110

BD 0.096 Each (On a Reel of 3000) (Exc. Vat)

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

BD 591.294

BD 0.197 Each (On a Reel of 3000) (Exc. 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
150°C
3mm
1mm
AL5809
No
-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

BD 514.998

BD 0.172 Each (On a Reel of 3000) (Exc. 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
150°C
3mm
1mm
AL5809
No
-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

BD 267.036

BD 0.089 Each (On a Reel of 3000) (Exc. Vat)

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DiodesZetex
Constant Current Diode
4-Channel Linear Constant Current Sink
-
Surface
SOT-23
6
2V
6V
-
85°C
3.02mm
1.3mm
AP2502
No
-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

BD 3.815

BD 0.190 Each (In a Pack of 20) (Exc. 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
150°C
3mm
1mm
AL5809
No
-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

BD 4.387

BD 0.146 Each (In a Pack of 30) (Exc. Vat)

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DiodesZetex
Constant Current Diode
4-Channel Linear Constant Current Sink
-
Surface
SOT-23
6
2V
6V
-
85°C
3.02mm
1.3mm
AP2502
No
-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

BD 2.543

BD 0.101 Each (In a Pack of 25) (Exc. Vat)

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

BD 549.331

BD 0.305 Each (In a Box of 1800) (Exc. Vat)

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

BD 39.261

BD 0.414 Each (In a Tube of 95) (Exc. Vat)

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