K2201GRP

Thyristors are a type of semiconductor used in direct current applications to cut, reverse, or control voltage and current. The K2201GRP is a type of thyristor, specifically a DIAC or Dual Inversely Acting Anode Thyristor.

DIACs are three-terminal semiconductor switches typically used to turn on at a specified breakover voltage, such as at a set current level, thus acting as an on/off switch. They employ an unidirectional switching action, where the gate voltage is proportional to the current flow. Unlike Si or other types of thyristors, DIACs have an open state, which allows current to flow until the voltage crosses the device’s turn-on voltage threshold.

This type of thyristor works by setting the current flow in one direction until a certain voltage point. This range is designed and set within the application and is typically referred to as the operating voltage range. The exact voltage at which the K2201GRP switches on depends on the DC supply current, the gate-emitter voltage, and the on-resistance of the device.

The K2201GRP generally operates in the range of 18V to 150V. It is a 60mA DIAC thyristor, with an on-resistance of 0.05 ohm, a gate-emitter voltage of 4V, an on-state voltage of 35V, and a breakover voltage of 1V. Its forward blocking voltage is 3.2V and its forward current is 4.5mA. It also has a diode stand-off voltage of 225V and a storage temperature range of -40 to 95 degrees Celsius.

The K2201GRP is available in through-hole, surface mount, and chip packages for a variety of applications. It is typically used in low voltage switching and control applications, such as in power supplies, DC-DC converters, inverters, and home automation systems. It is also used in circuit protection and other bridge rectifier applications.

In operation, the K2201GRP works by conducting current flow in one direction and has an open state when the gate voltage is below the device’s turn-on voltage. When the gate voltage crosses this threshold, the thyristor switches and current begins to flow, allowing the device to control or switch the circuit.

The K2201GRP is one of the most commonly used DIAC thyristors, and offers a cost-effective, highly-reliable solution for low voltage circuit protection, control, and switching.