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A DIAC, or Diode for Alternating Current, is a semiconductor device that conducts current only after its breakdown voltage has been exceeded. It is typically made from silicon and is used primarily in triggering applications for thyristors and other power devices. DIACs are designed to switch on and off in response to alternating current, making them ideal for controlling power in various electronic circuits.
| Material | Silicon |
| Breakdown Voltage | Typically 30V to 300V |
| Package Types | TO-92, TO-220, and surface mount options |
| Holding Current | Generally in the range of 0.5mA to 10mA |
| Temperature Range | -55°C to +150°C |
When selecting a DIAC, consider the breakdown voltage and holding current specifications to ensure compatibility with your application. It's also important to specify the package type that suits your circuit design. If applicable, inquire about temperature ratings and any necessary certifications for your industry standards. Always provide the expected quantities to receive accurate quotes.
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A DIAC is used to switch on and off in response to voltage levels, primarily in triggering applications.
A DIAC is a unidirectional device that triggers at a specific voltage, while a TRIAC can conduct in both directions once triggered.
DIACs are commonly used in lighting control, motor speed control, and phase control circuits.
Yes, DIACs can be used to protect circuits from overvoltage by clamping voltage spikes.
Consider the breakdown voltage, holding current, package type, and temperature range.
Yes, DIACs come in various package types including TO-92, TO-220, and surface mount.