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 diodes constant 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 drivers and can be used to replace holding coils in telephone connection devices.


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รายละเอียดสินค้า / Description ราคา / 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. 197-7486
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.REF200AU
THB258.869
Each (In a Tube of 75)
Units
Single 100µA 3 40V 500MΩ 40V - SOIC 8 - - - - -
RS Stock No. 535-9098
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM334Z/NOPB
THB33.422
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. 253-831
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E-822
Brand :SEMITEC
THB83.922
Each: (In a Pack of 5)
Units
Single - 1 30V 0.32MΩ 3.1V Through Hole - 2 3.9 x 1.8 x 1.8mm 3.9mm 1.8mm 1.8mm +150 °C
RS Stock No. 170-4833
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PSSI2021SAY,115
Brand :Nexperia
THB5.212
Each (On a Reel of 3000)
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Single 50mA 2 75V - 73V Surface Mount SC-88A 5 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm +150 °C
RS Stock No. 921-6819
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM234Z-3/NOPB
THB55.579
Each (On a Reel of 1800)
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Single 10mA 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. 779-9615
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LT3092EST#PBF
THB169.30
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Single 200mA 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. 253-825
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E-562
Brand :SEMITEC
THB72.472
Each: (In a Pack of 5)
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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 Stock No. 253-819
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E-452
Brand :SEMITEC
THB72.472
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. 693-4035
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.S-123T
Brand :SEMITEC
THB82.837
Each: (In a Pack of 10)
Units
Single 14.4mA 1 50V - 3.8V Surface Mount SMD 2 2.6 x 1.6 x 0.7mm 2.6mm 1.6mm 0.7mm +150 °C