SIDACs Step Up to High-Energy Applications, to Simplify Ignition Circuits

By replacing hybrid circuits for ignition and switching applications, High- Energy SIDAC switches from Littelfuse deliver a less complex and lower-cost solution in a variety of appliance and lighting applications.

A SIDAC bi-directional thyrister diode operates as a switch to discharge accumulated capacitor energy, and the Littelfuse High-Energy technology now allows the use of large capacitors to generate higher output currents suitable for direct-spark ignition circuits. As well as saving cost and complexity, High-Energy SIDACs also enhance reliability in systems such as gas-ignition circuits and strobe or discharge lighting.

Littelfuse High-Energy SIDACs are engineered with repetitive peak-pulse-current capability of 280A, which allows them to deliver high output energy to the application. Also, their high voltage stability at high operating temperatures ensures predictable firing-output energy. The choice of DO-15 axial, TO-92 radial or DO-214 surface-mount packages eases design-in to a wide variety of equipment types.

As an important additional benefit in ignition systems, High-Energy SIDACs have unlimited lifetime compared to alternatives such as Gas Discharge Tubes (GDT), which are often rated to 10,000 discharge events or fewer.

 

FEATURES Wide range of switching voltages Maximum operating junction temperature: 125°C Enhanced long-term reliability

APPLICATIONS Domestic and commercial cookers Water heaters Furnaces Gas-fired barbecues Emergency and security lighting Entertainment lighting

 

 

 

Littelfuse / High-Energy SIDACs