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 type of three-terminal semiconductor transistor which functions like a current limiter. They allow the current running through them to rise to a certain point and level off at a specific value. Unlike zener diodesconstant current diodes maintain a constant current instead of the constant voltage.

Applications for constant current diodes

Constant current diodes can be used in several circuit applications. Examples of devices using constant current diodes include waveform generator circuits, timing circuits and battery chargers. Constant current diodes can also be used as a constant current source for LED driversand can be used to replace holding coils in telephone connection devices.


...
Read more Read less

Filters

Viewing 1 - 20 of 52 products
Results per page
Description Price Diode Configuration Maximum Regulator Current Number of Elements per Chip Maximum Peak Operating Voltage Minimum Dynamic Impedance Maximum Limiting Voltage Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Temperature
RS Stock No. 145-0208
Mfr. Part No.LT3092EST#PBF
TWD91.60
Each (In a Tube of 78)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C
RS Stock No. 121-8833
Mfr. Part No.LM334Z/NOPB
TWD12.90
Each (In a Box of 1800)
units
Single - 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +70 °C
RS Stock No. 535-9098
Mfr. Part No.LM334Z/NOPB
TWD30.20
Each (In a Pack of 5)
units
Single 10mA 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +70 °C
RS Stock No. 779-9615
Mfr. Part No.LT3092EST#PBF
TWD154.50
Each (In a Pack of 2)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.8mm 6.71mm 3.71mm 1.8mm +125 °C
RS Stock No. 253-780
Mfr. Part No.E-202
BrandSEMITEC
TWD80.80
Each (In a Pack of 5)
units
Single - 1 100V 0.25MΩ 2.3V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS Stock No. 461-9434
Mfr. Part No.REF200AU
TWD311.00
Each
units
Complex Array - 3 - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm +85 °C
RS Stock No. 693-4029
Mfr. Part No.L-1822
BrandSEMITEC
TWD152.00
1 Pack of 5
Pack(s)
- 22mA - 30V - 3.9V Through Hole - 2 10.5 x 4.1 x 9.8mm 10.5mm 4.1mm 9.8mm +150 °C
RS Stock No. 165-8354
Mfr. Part No.AP2502KTR-G1
TWD4.70
Each (On a Reel of 3000)
units
Single - 1 6V - - Surface Mount SOT-23 6 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm +85 °C
RS Stock No. 253-819
Mfr. Part No.E-452
BrandSEMITEC
TWD80.60
Each (In a Pack of 5)
units
Single - 1 100V 0.07MΩ 3.7V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS Stock No. 253-803
Mfr. Part No.E-352
BrandSEMITEC
TWD80.80
Each (In a Pack of 5)
units
Single - 1 100V 0.1MΩ 3.2V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS Stock No. 921-0477
Mfr. Part No.AP2502KTR-G1
TWD13.40
Each (In a Pack of 30)
units
Single - 1 6V - - Surface Mount SOT-23 6 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm +85 °C
RS Stock No. 693-4031
Mfr. Part No.S-103T
BrandSEMITEC
TWD79.60
Each (In a Pack of 10)
units
Single 12mA 1 50V - 3.5V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C
RS Stock No. 693-4022
Mfr. Part No.S-183T
BrandSEMITEC
TWD79.60
Each (In a Pack of 10)
units
Single 20mA 1 40V - 4.6V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C
RS Stock No. 133-3331
Mfr. Part No.AL5809-120QP1-7
TWD17.40
Each (In a Pack of 20)
units
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
RS Stock No. 761-5472
Mfr. Part No.LM234Z-3/NOPB
TWD84.20
Each (In a Pack of 5)
units
Single - 1 40V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C
RS Stock No. 155-7505
Mfr. Part No.LT3092IDD#PBF
TWD95.80
Each (In a Tube of 121)
units
Single - 1 - - - Surface Mount DFN 8 3 x 3 x 0.75mm 3mm 3mm 0.75mm +125 °C
RS Stock No. 761-5476
Mfr. Part No.LM234Z-6/NOPB
TWD45.00
Each (In a Pack of 5)
units
Single - 1 30V - - Through Hole TO-92 3 5.2 x 4.19 x 5.2mm 5.2mm 4.19mm 5.2mm +100 °C
RS Stock No. 133-3335
Mfr. Part No.AL5809-50QP1-7
TWD15.80
Each (In a Pack of 20)
units
Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
RS Stock No. 919-9238
Mfr. Part No.LT3092ITS8TRMPBF
TWD88.70
Each (On a Reel of 500)
units
Single - 1 40V - - Surface Mount SOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
RS Stock No. 822-5869
Mfr. Part No.LT3092IST#PBF
TWD172.00
Each (In a Pack of 2)
units
Single - 1 - - - Surface Mount SOT-223 3 + Tab 6.71 x 3.71 x 1.6984mm 6.71mm 3.71mm 1.698mm +125 °C