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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Part Details | Brand | 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 | Minimum Operating Temperature |
SEMITEC E-101 Constant Current Diode, 0.5V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-102 Constant Current Diode, 1.7V max, 2-Pin
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SEMITEC | Single | - | 1 | 100V | 0.65MΩ | 1.7V | Through Hole | - | 2 | 3.9 x 1.8 x 1.8mm | 3.9mm | 1.8mm | 1.8mm | +150 °C | -30 °C | |
SEMITEC E-103 Constant Current Diode, 3.5V max, 2-Pin
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SEMITEC | Single | - | 1 | 30V | 0.17MΩ | 3.5V | Through Hole | - | 2 | 3.9 x 1.8 x 1.8mm | 3.9mm | 1.8mm | 1.8mm | +150 °C | -30 °C | |
SEMITEC E-123 Constant Current Diode, 3.8V max, 2-Pin
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SEMITEC | Single | - | 1 | 30V | 0.08MΩ | 3.8V | Through Hole | - | 2 | 3.9 x 1.8 x 1.8mm | 3.9mm | 1.8mm | 1.8mm | +150 °C | -30 °C | |
SEMITEC E-153 Constant Current Diode, 4.3V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-202 Constant Current Diode, 2.3V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-272 Constant Current Diode, 2.7V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-301 Constant Current Diode, 0.8V max, 2-Pin
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SEMITEC | Single | - | 1 | 100V | 4MΩ | 0.8V | Through Hole | - | 2 | 3.9 x 1.8 x 1.8mm | 3.9mm | 1.8mm | 1.8mm | +150 °C | -30 °C | |
SEMITEC E-352 Constant Current Diode, 3.2V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-452 Constant Current Diode, 3.7V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-501 Constant Current Diode, 1.1V max, 2-Pin
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SEMITEC | Single | - | 1 | 100V | 2MΩ | 1.1V | Through Hole | - | 2 | 3.9 x 1.8 x 1.8mm | 3.9mm | 1.8mm | 1.8mm | +150 °C | -30 °C | |
SEMITEC E-562 Constant Current Diode, 4.5V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC E-822 Constant Current Diode, 3.1V max, 2-Pin
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SEMITEC | 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 | -30 °C | |
SEMITEC S-103T Constant Current Diode, 12mA, 3.5V max, 2-Pin SMD
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SEMITEC | 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 | -40 °C | |
SEMITEC S-123T Constant Current Diode, 14.4mA, 3.8V max, 2-Pin SMD
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SEMITEC | 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 | -40 °C | |
SEMITEC S-153T Constant Current Diode, 18mA, 4.3V max, 2-Pin SMD
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SEMITEC | Single | 18mA | 1 | 50V | - | 4.3V | Surface Mount | SMD | 2 | 2.6 x 1.6 x 0.7mm | 2.6mm | 1.6mm | 0.7mm | +150 °C | -40 °C | |
SEMITEC S-183T Constant Current Diode, 20mA, 4.6V max, 2-Pin SMD
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SEMITEC | 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 | -40 °C | |
SEMITEC S-562T Constant Current Diode, 6.5mA, 4.5V max, 2-Pin SMD
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SEMITEC | 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 | -40 °C | |
Nexperia PSSI2021SAY,115 Constant Current Diode, 50mA, 73V max, 5-Pin SC-88A
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Nexperia | Single | 50mA | 2 | 75V | - | 73V | Surface Mount | SC-88A | 5 | 2.2 x 1.35 x 1mm | 2.2mm | 1.35mm | 1mm | +150 °C | -65 °C | |
DiodesZetex AP2502KTR-G1 Constant Current Diode, 6-Pin SOT-23
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DiodesZetex | Single | - | 1 | 6V | - | - | Surface Mount | SOT-23 | 6 | 3.02 x 1.7 x 1.3mm | 3.02mm | 1.7mm | 1.3mm | +85 °C | -40 °C |
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