MOC3083SR2M Isolators

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The MOC3083SR2M is an optoisolator in the Triac, SCR Output category. It has an indoor temperature range of -40 degrees C to 85 degrees C and a maximum junction temperature of 150 degrees C. It has multiple applications due to its 6-pin DIP package, fast switching speed, and low-standby current. Its surge voltage is 4.0kV/40us.

The MOC3083SR2M optoisolator is a solid-state, zero voltage crossing device which fires a controlled TRIAC. It has a built-in zero voltage-switching optocoupler and a snubberless TRIAC driver output. This device has been widely used in different applications such as lighting, motor speed control, temperature control, industrial process control and AC power switching.

The optical input is connected to a 6-pin dual-in-line (DIP) plastic package. An LED (light-emitting diode) embedded within the package and pairs of terminals — one marked with an arrow — are used to provide an optically isolated control of TRIACs or SCRs. The LED works at a frequency range of 50 Hz to 60 Hz and drives the output terminal. The current transfer ratio is typically 1mA/1mA. The triggering angle is adjustable from 0-35 degrees in 5mV increments.

The working principle of the MOC3083SR2M is based on the optocoupler, which uses an LED as its input source. A TRIAC is connected to the output terminal of the optocoupler. When the LED is energized, light is emitted and passes through an optically isolated gap to activate the TRIAC. When the LED is turned off, the TRIAC is reset to its off state. This allows the MOC3083SR2M to be used for controlling the current flow in AC power applications.

In short, the MOC3083SR2M optoisolator is ideal for applications that require isolated control of AC current. It has a fast switching speed, low-standby current, high surge voltage, adjustable triggering angle, and 6-pin DIP package. Its wide operating temperature range and high-current transfer ratio make it a perfect choice for applications which require high reliability and long-term performance.

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