Littelfuse, Inc. has upgraded its switching thyristor line with the introduction of the SJ Series high-
Source: Littelfuse, Inc.temperature SCR (silicon-controlled rectifier) switching thyristors. This new series offers circuit designers blocking voltages (VDRM) up to 600V and current ratings from 4A to 40A to support a wide range of applications. By offering designers a wider operating margin than earlier SCRs, they make it possible to tolerate insufficient cooling and higher inrush currents at startup.
Typical applications for SJ Series include:
- Rectifier and battery voltage regulators for AC generators in motorcycles, ATVs, small gasoline engines and gasoline/gas electric generators.
- Capacitor discharge ignition (CDI) in motorcycles, ATVs, small gasoline engines and furnaces.
- Inrush current limiters for bulk capacitors in AC-DC systems such as LED lighting and battery chargers.
- Line AC rectifier bridges for LED lighting systems, DC motor controls and battery chargers.
- Soft starters for AC motors.
SJ Series SCR switching thyristors offer these key benefits:
- High junction temperature of 15 degrees C provides a wider operating margin in existing designs and allows the use of smaller heat sinks in new designs.
- Wide package selection allows designers to select the optimal package for a specific application.
- Robust clip-attach package design enables high surge capability, so SCRs can tolerate high inrush currents and harsher operating conditions for a longer field life.
Availability
SJ Series SCR Switching Thyristors are available in various package styles, including TO-251AA, TO‑252AA (D-PAK), TO-220 Isolated, TO-220AB Non-Isolated and TO-263 (D2-PAK). Minimum order quantities for products packed in tubes range from 500 to 750. They are also available in embossed carriers, with minimum order quantities of 2,500 (D-PAK) or 500 (D2-PAK).
Sample requests may be placed through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit Littelfuse.com.
