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.


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제품설명 단가 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 제품 번호 253-796
제조사 부품 번호E-272
제조사SEMITEC
₩1,450.80
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Single - 1 100V 0.15MΩ 2.7V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS 제품 번호 535-9082
제조사 부품 번호LM334M/NOPB
₩1,351.60
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Single - 1 40V - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm +70 °C
RS 제품 번호 121-8832
제조사 부품 번호LM334M/NOPB
₩961.00
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Single - 1 40V - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm +70 °C
RS 제품 번호 693-4025
제조사 부품 번호S-562T
제조사SEMITEC
₩998.20
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Single 6.5mA 1 100V - 4.5V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C
RS 제품 번호 253-825
제조사 부품 번호E-562
제조사SEMITEC
₩3,546.40
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Single - 1 100V 0.04MΩ 4.5V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS 제품 번호 253-780
제조사 부품 번호E-202
제조사SEMITEC
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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 제품 번호 461-9434
제조사 부품 번호REF200AU
₩10,555.50
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Complex Array - 3 - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm +85 °C
RS 제품 번호 121-8833
제조사 부품 번호LM334Z/NOPB
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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 제품 번호 535-9098
제조사 부품 번호LM334Z/NOPB
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제조사 부품 번호E-153
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Single - 1 25V 0.03MΩ 4.3V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS 제품 번호 253-724
제조사 부품 번호E-101
제조사SEMITEC
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Single - 1 100V 6MΩ 0.5V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS 제품 번호 693-4031
제조사 부품 번호S-103T
제조사SEMITEC
₩627.75
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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 제품 번호 253-746
제조사 부품 번호E-501
제조사SEMITEC
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RS 제품 번호 921-0477
제조사 부품 번호AP2502KTR-G1
제조사DiodesZetex
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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 제품 번호 156-5698
제조사 부품 번호LT3092ETS8#TRMPBF
제조사Analog Devices
₩4,101.30
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Single - 1 40V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm +125 °C
RS 제품 번호 165-8354
제조사 부품 번호AP2502KTR-G1
제조사DiodesZetex
₩178.25
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RS 제품 번호 133-3345
제조사 부품 번호BCR421UW6Q-7
제조사DiodesZetex
₩354.95
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Single - 1 40V - - Surface Mount SOT-26 6 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm +150 °C
RS 제품 번호 168-9540
제조사 부품 번호AL5809-50QP1-7
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₩381.30
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Single - 1 60V - - Surface Mount PDI123 2 3 x 1.93 x 1mm 3mm 1.93mm 1mm +150 °C
RS 제품 번호 858-0898
제조사 부품 번호LT3092ETS8#TRMPBF
제조사Analog Devices
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RS 제품 번호 919-9238
제조사 부품 번호LT3092ITS8TRMPBF
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