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...

Showing 1-20 of 24 products

Filter

Sort

Filter

Sort

Relevance
Price (high-low)
Price (low-high)
Microchip PAC1954T-E/4MX 450 μA Power Monitor 16-Pin VQFN 5.5V
Microchip PAC1954T-E/4MX 450 μA Power Monitor 16-Pin VQFN 5.5V
Add to parts list
RS Stock No.: 764-323Brand: MicrochipManufacturers Part No.: PAC1954T-E/4MXHSN Code: 85423990

P.O.A.

Check stock

3300

Available in multiples of 3300
3300P.O.A.
Add to basket
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
Nexperia 370 μA Constant Current Diode 5-Pin SC-88 75 V
Add to parts list
RS Stock No.: 170-4833Brand: NexperiaManufacturers Part No.: PSSI2021SAY,115HSN Code: 85412100

SR 3,105.00

SR 1.035 Each (On a Reel of 3000) (ex VAT)

Check stock

3000

Available in multiples of 3000
3000SR 1.035
Add to basket
Nexperia
Constant Current Diode
Constant Current Source
-
Surface
SC-88
5
-
75V
-
No
1mm
2.2mm
PSSI2021SAY
150°C
-65°C
370μA
No
DiodesZetex BCR421UW6Q-7 1.2 mA Constant Current Diode 6-Pin SOT-26 40 V
DiodesZetex BCR421UW6Q-7 1.2 mA Constant Current Diode 6-Pin SOT-26 40 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 133-3345Brand: DiodesZetexManufacturers Part No.: BCR421UW6Q-7HSN Code: 85411000

SR 29.90

SR 1.495 Each (In a Pack of 20) (ex VAT)

Check stock

20

Available in multiples of 20
20SR 1.495
Add to basket
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
Texas Instruments LM334Z/NOPB 10 mA Constant Current Diode 3-Pin TO-92 40 V
Texas Instruments LM334Z/NOPB 10 mA Constant Current Diode 3-Pin TO-92 40 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 535-9098Brand: Texas InstrumentsManufacturers Part No.: LM334Z/NOPBHSN Code: 85423990

SR 28.75

SR 5.75 Each (In a Pack of 5) (ex VAT)

Check stock

5

Available in multiples of 5
5SR 5.75
Add to basket
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 LM234Z-3/NOPB 10 mA Programmable Current Source 3-Pin TO-92 40 V
Texas Instruments LM234Z-3/NOPB 10 mA Programmable Current Source 3-Pin TO-92 40 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 761-5472Brand: Texas InstrumentsManufacturers Part No.: LM234Z-3/NOPBHSN Code: 85423990

SR 103.50

SR 20.70 Each (In a Pack of 5) (ex VAT)

Check stock

5

Available in multiples of 5
5SR 20.70
Add to basket
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
DiodesZetex AL5809-30QP1-7 150 mA Constant Current Diode 2-Pin PDI123 60 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 133-3334Brand: DiodesZetexManufacturers Part No.: AL5809-30QP1-7HSN Code: 85423990

SR 38.64

SR 1.932 Each (In a Pack of 20) (ex VAT)

Check stock

20

Available in multiples of 20
20SR 1.932
Add to basket
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
Texas Instruments Constant Current Diode 8-Pin SOIC 40 V
Add to parts list
RS Stock No.: 197-7486Brand: Texas InstrumentsManufacturers Part No.: REF200AUHSN Code: 85423390

SR 3,967.50

SR 52.90 Each (In a Tube of 75) (ex VAT)

Check stock

75

Available in multiples of 75
75SR 52.90
Add to basket
Texas Instruments
Constant Current Diode
-
±0.5 %
Surface
SOIC
8
2.5V
40V
Current
No
1.75mm
5mm
REF200
85°C
-25°C
-
No
Texas Instruments REF200AU Constant Current Diode 8-Pin SOIC 40 V
Texas Instruments REF200AU Constant Current Diode 8-Pin SOIC 40 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 197-7487Brand: Texas InstrumentsManufacturers Part No.: REF200AUHSN Code: 85423390

SR 72.45

SR 72.45 Each (ex VAT)

Check stock

1

Available in multiples of 1
1SR 72.45
Add to basket
Texas Instruments
Constant Current Diode
-
±0.5 %
Surface
SOIC
8
2.5V
40V
Current
No
1.75mm
5mm
REF200
85°C
-25°C
-
No
Texas Instruments LM234Z-6/NOPB 10 mA Programmable Current Source 3-Pin TO-92 30 V
Texas Instruments LM234Z-6/NOPB 10 mA Programmable Current Source 3-Pin TO-92 30 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 761-5476Brand: Texas InstrumentsManufacturers Part No.: LM234Z-6/NOPBHSN Code: 85423990

SR 34.50

SR 6.90 Each (In a Pack of 5) (ex VAT)

Check stock

5

Available in multiples of 5
5SR 6.90
Add to basket
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
Texas Instruments LM334M/NOPB 10 mA Constant Current Diode 8-Pin SOIC 40 V
Texas Instruments LM334M/NOPB 10 mA Constant Current Diode 8-Pin SOIC 40 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 535-9082Brand: Texas InstrumentsManufacturers Part No.: LM334M/NOPBHSN Code: 85423990

SR 40.25

SR 8.05 Each (In a Pack of 5) (ex VAT)

Check stock

5

Available in multiples of 5
5SR 8.05
Add to basket
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
DiodesZetex 1.2 mA Constant Current Diode 6-Pin SOT-26 40 V
Add to parts list
RS Stock No.: 168-9550Brand: DiodesZetexManufacturers Part No.: BCR421UW6Q-7HSN Code: 85411000

SR 2,898.00

SR 0.966 Each (On a Reel of 3000) (ex VAT)

Check stock

3000

Available in multiples of 3000
3000SR 0.966
Add to basket
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
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
Add to parts list
RS Stock No.: 168-9536Brand: DiodesZetexManufacturers Part No.: AL5809-120QP1-7HSN Code: 85423990

SR 5,899.50

SR 1.966 Each (On a Reel of 3000) (ex VAT)

Check stock

3000

Available in multiples of 3000
3000SR 1.966
Add to basket
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
DiodesZetex 150 mA Constant Current Diode 2-Pin PDI123 60 V
Add to parts list
RS Stock No.: 168-9539Brand: DiodesZetexManufacturers Part No.: AL5809-30QP1-7HSN Code: 85423990

SR 5,106.00

SR 1.702 Each (On a Reel of 3000) (ex VAT)

Check stock

3000

Available in multiples of 3000
3000SR 1.702
Add to basket
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
DiodesZetex 20 mA Constant Current Diode 6-Pin SOT-23 6 V
Add to parts list
RS Stock No.: 165-8354Brand: DiodesZetexManufacturers Part No.: AP2502KTR-G1HSN Code: 85423990

SR 2,932.50

SR 0.978 Each (On a Reel of 3000) (ex VAT)

Check stock

3000

Available in multiples of 3000
3000SR 0.978
Add to basket
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
DiodesZetex AL5809-120QP1-7 150 mA Constant Current Diode 2-Pin PDI123 60 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 133-3331Brand: DiodesZetexManufacturers Part No.: AL5809-120QP1-7HSN Code: 85423990

SR 36.34

SR 1.817 Each (In a Pack of 20) (ex VAT)

Check stock

20

Available in multiples of 20
20SR 1.817
Add to basket
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
DiodesZetex AP2502KTR-G1 20 mA Constant Current Diode 6-Pin SOT-23 6 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 921-0477Brand: DiodesZetexManufacturers Part No.: AP2502KTR-G1HSN Code: 85423990

SR 50.72

SR 1.69 Each (In a Pack of 30) (ex VAT)

Check stock

30

Available in multiples of 30
30SR 1.69
Add to basket
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
Nexperia PSSI2021SAY,115 370 μA Constant Current Diode 5-Pin SC-88 75 V
Add to parts list
Also available in industry standard packaging
RS Stock No.: 170-5384Brand: NexperiaManufacturers Part No.: PSSI2021SAY,115HSN Code: 85412100

SR 29.04

SR 1.162 Each (In a Pack of 25) (ex VAT)

Check stock

25

Available in multiples of 25
25SR 1.162
Add to basket
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
Texas Instruments 10 mA Constant Current Diode 3-Pin TO-92 40 V
Add to parts list
RS Stock No.: 121-8833Brand: Texas InstrumentsManufacturers Part No.: LM334Z/NOPBHSN Code: 85423990

SR 6,210.00

SR 3.45 Each (In a Box of 1800) (ex VAT)

Check stock

1800

Available in multiples of 1800
1800SR 3.45
Add to basket
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
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
Add to parts list
RS Stock No.: 121-8832Brand: Texas InstrumentsManufacturers Part No.: LM334M/NOPBHSN Code: 85423990

SR 437.00

SR 4.60 Each (In a Tube of 95) (ex VAT)

Check stock

95

Available in multiples of 95
95SR 4.60
Add to basket
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
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
Texas Instruments 10 mA Constant Current Diode 8-Pin SOIC 40 V
Add to parts list
RS Stock No.: 208-8575Brand: Texas InstrumentsManufacturers Part No.: LM334MX/NOPBHSN Code: 85411000

SR 8,625.00

SR 3.45 Each (On a Reel of 2500) (ex VAT)

Check stock

2500

Available in multiples of 2500
2500SR 3.45
Add to basket
Texas Instruments
Constant Current Diode
Current Regulator
±3 %
Surface
SOIC
8
1V
40V
Current
No
1.75mm
5mm
LM334
70°C
0°C
10mA
No