Electronics Characteristics of SIDAC
The SIDAC is a silicon bilateral voltage triggered switch. Upon application of a voltage exceeding the SIDAC break over voltage point, the SIDAC switches on through a negative resistance region to a low on-state voltage. Conduction continues until the current is interrupted or drops below the minimum holding current of the component. SIDACs feature glass-passivated junctions to ensure a rugged and dependable component capable of withstanding harsh environments.
How SIDACs Work
Blocked State:
When the voltage across the SIDAC is below its breakover voltage, the device is in a high-impedance, blocked state, preventing current flow.
Triggering:
When the applied voltage exceeds the breakover voltage (VBO) in either direction, the SIDAC is triggered into a low-resistance, conductive state.
Conduction:
The SIDAC then allows a significant amount of current to flow, with a low on-state voltage drop
Switching Off:
Conduction continues until the current falls below the device’s minimum holding current (IH), causing the SIDAC to switch back to its blocked state.
Key Characteristics
* Bidirectional:
SIDACs conduct current in both directions, making them suitable for AC circuits
* Higher Power Handling:
They have greater power-handling capabilities and higher breakover voltages compared to DIACs
* Voltage-Triggered:
They are triggered by voltage, with their operation depending on the breakover voltage and holding current.
Applications
* Ignition Systems:
Used to generate high-voltage pulses for igniting gas-discharge lamps in HID lighting and gas appliances
* Surge Protection:
Protects communication and power systems during overvoltage events by providing a high-current path for surges
* Pulse Generation:
Creates high-energy pulses for applications like test equipment
4* Relaxation Oscillators:
Integrated into relaxation oscillators to produce sawtooth waveforms for various electronic functions.
Topdiode SIDAC Kxxx0G1 SERIES
Electronics Characteristics (TA=25℃)
Features for SIDAC Kxxx0G1 SERIES
* DO-15 package
* Excellent capability of absorbing transient surge
* Quick response to surge voltage (ns Level)
* Bi-directional configurations
* AC Circuit Oriented
* Glass-passivated junctions
* For surface mounted applications to optimize board space
Absolute Maximum Ratings (TA=25℃, RH=45%-75%, unless otherwise noted)
Curve Characteristics
Typical Characteristics
Soldering Parameters
Reflow Condition
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