Littelfuse Introduces First SCR Thyristor for 600V 40Arms and 150°C Junction Temperature

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Littelfuse , Inc., a global leader in circuit protection, today introduced the 40A series of standard high temperature silicon controlled rectifier (SCR) thyristors for use in rectifier and phase control applications such as voltage regulators, heating and motor speed control. . The new SJxx40x series is Littelfuse 's first SCR thyristor capable of handling 600V, 40Arms and junction temperatures up to 150°C.

SJxx40x series SCR thyristor

The SJxx40x series is designed to avoid overheating and thermal runaway problems caused by SCR's limited cooling capacity or occasional overload conditions. It can be triggered by a current of a few milliamps below 1.5V.

Typical applications for the SJxx40x series of SCR thyristors include rectifiers for a variety of end uses, including AC solid state switches, industrial power tools, sports equipment, white goods, and commercial appliances.

“SCR thyristors can operate at higher temperatures, which minimizes the risk of uncontrolled temperature rise in demanding applications and helps designers with limited cooling capabilities overcome problems.” Liticlfuse Business Development Manager Koichiro Yoshimoto “The new SJxx40x family will be able to handle higher currents or use a smaller heat sink to handle the same power,” said.

The SJxx40x series of SCR thyristors offer the following key advantages:

• Ability to handle high load currents and occasional overloads with limited cooling capacity due to junction temperatures (TJ) up to 150 °C.

• Available in TO-220AB and TO-263 packages to support flexible mounting options and simplify device design.

• Up to 40Arms of on-state current (IT) allows the SJxx40X to handle higher load currents.

• Higher rated voltages change over time (dv/dt), allowing the SJxx40X to withstand the higher line noise and surges common in commercial AC power lines.

Availability

The SJxx40x series is available in TO-220AB (non-isolated) or TO-263 (D2-Pak) 500-packages, 50 per tube. Samples are available from authorized Littelfuse dealers around the world. For a list of authorized Littelfuse dealers, visit littelfuse.com.

More information

More information can be found in the following sections: SJxx40x Series SCR Thyristor Product Page. For technical questions, please contact: Business Development Manager Koichiro Yoshimoto.