The 2N6403G is a Silicon Controlled Rectifier (SCR) produced by Littelfuse. Here are the key specifications and details about this component:
- Manufacturer: Littelfuse
- Part Number: 2N6403G
- Type: Silicon Controlled Rectifier (SCR)
- Voltage Rating: 400V
- Current Rating: 16A
- Package: TO-220AB (Through-Hole, 3-pin)
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DataSheet 2N6403G PDF
Key Features:
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SCR: The Silicon Controlled Rectifier is a four-layer solid-state current-controlled electrical switch capable of handling high voltages and currents.
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Voltage and Current Ratings: This SCR is rated for a maximum voltage of 400V and a maximum current of 16A, making it suitable for medium-power applications.
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Package Type (TO-220AB): The TO-220AB package is a through-hole package with three pins that allow for easy mounting on a circuit board.
Main Specifications and Usage:
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Voltage Regulation: SCRs are commonly used for switching and controlling AC power, motor control, power supplies, and other high-power applications.
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Overvoltage Protection: They can also be used in crowbar circuits to protect sensitive components from overvoltage conditions.
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Switching Applications: SCRs are widely employed in situations where high-power switching is required and where the device needs to remain in an "on" state until reset manually or through control signals.
Working Principle:
When a small current is applied to the gate of the SCR, the device turns on and allows a larger current to flow through it until the current drops below a certain threshold or a reverse voltage is applied.
Benefits and Considerations:
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Reliability: SCRs are known for their reliability and ruggedness, suitable for demanding applications.
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Efficiency: They have low conduction losses and can handle high currents efficiently.
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Thermal Considerations: Thermal management is important as they can generate heat during operation.
Typical Applications:
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Motor Control: SCRs are commonly used in motor control circuits.
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Light Dimming: They are used in light dimming circuits and power control applications.
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Heating Systems: SCRs are found in applications like heating systems where power regulation is critical.
Implementation:
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Heat Sink: Consider using a heat sink to manage heat dissipation, especially in high-power applications.
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Gate Signal: Apply the appropriate gate signal to turn the SCR on at the intended time.
