LD431650

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Structure:	Series Connection - All SCRs
Number of SCRs, Diodes:	2 SCRs
Voltage - Off State:	1.6kV
Current - On State (It (AV)) (Max):	500A
Current - On State (It (RMS)) (Max):	900A
Voltage - Gate Trigger (Vgt) (Max):	3V
Current - Gate Trigger (Igt) (Max):	200mA
Current - Non Rep. Surge 50, 60Hz (Itsm):	16300A, 17000A
Operating Temperature:	-40°C ~ 130°C (TJ)
Mounting Type:	Chassis Mount
Package / Case:	POW-R-BLOK™ Module

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<div class="content"><h2>Thyristors - SCRs - Modules</h2><p>LD431650 is a type of silicon controlled rectifier (SCR) module engineered and manufactured by Littelfuse. It is a three-phase bridge rectifier module, which comprises of three SCRs in parallel configuration to provide high current handling capabilities. It is a 600V, 7A module with quick-acting high-current surge-handling capabilities and low-noise operation. This SCR module is a low-maintenance and cost-efficient solution for medium- to large-capacity applications.</p><h3>Application Field</h3><p>The LD431650 is primarily used in motor drives, power control, inverters and choppers, and DC to AC conversion applications. It is widely used in mining industries, electric utilities, and industrial infrastructure. This module is also widely used for AC filter applications, such as high-frequency filter, current-shunt filter, current-switched filter, and power filter capacitors. It has the capacity to deliver high-speed response and high-precision operation, and is suitable for use in portable and stationary power supplies.</p><p>In motor control applications, the LD431650 can be used for controlling the speed and direction of motors. It can also help in providing protection against excessive motor speeds by cutting off the motor power. In motor drives, the module has the capability of providing fast current rise time and high-quality performance.</p><h3>Working Principle</h3><p>The LD431650 operates on a bi-polar principle, wherein one terminal must be at a higher voltage than the other for the device to conduct current. The bi-polar principle allows for fast current rise times, higher current handling capabilities, and low-noise operation.</p><p>When a voltage is applied to the SCR module, it will turn on and draw current. When the current reaches a certain level, the device will switch off, and the power will be disconnected. This process is called latching and ensures that the power supply remains uninterrupted. With latching, the LD431650 module can provide a steady and efficient output.</p><p>The LD431650 also includes a thyristor clamping feature, which enables the module to protect itself from current surges and transients. It is also designed with surge rating of 6A, which further enhances its protection capabilities.</p><h3>Advantages</h3><p>The LD431650 is a robust, reliable and cost-effective solution for many power control applications. Its power handling capabilities, fast current rise times, and low-noise operation make it an ideal choice for many industrial applications. In addition, the module offers a wide operating temperature range of -40C to 105C, making it suitable for use in a wide variety of operating conditions.</p><p>The module’s high-quality construction, advanced technologies, and reliable performance make it an attractive solution for motor drives, power control, and inverter applications. Moreover, its surge rating of 6A further enhances its protection capabilities and makes it more suitable for industrial applications.</p></div><div class="footer"><p>Written by <a href="http://jeffkingery.com">Jeff Kingery</a></p></div>

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