25TTS12STRR

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Thyristors - SCRs

The 25TTS12STRR is a popular thyristor, which is a type of power semiconductor that is widely used to control or switch electrical power in a wide range of applications. It is a bidirectional electronic part that has three terminals, an anode, a cathode and a control electrode (gate). Its main function is to control the power flowing between the anode and the cathode, and it can be triggered using current or voltage.

The 25TTS12STRR is a Triac type thyristor, intended mainly for industrial switching applications. Due to its strong surge immunity, the 25TTS12STRR is widely used in the lighting, HVAC, and industrial automation fields. Compared to other types of thyristors, such as SCRs, these devices provide enhanced surge immunity, high current carrying capacity and the ability to switch faster with higher current density.

Regarding the 25TTS12STRR application field, the 25TTS12STRR can provide a bidirectional current control. It performs this role with high speed and due to its low power consumption it can be used in a wide range of applications. Some of these applications include but are not limited to: motor speed control, industrial automation, power factor correction, power switching and protection, soft starting, switching applications, and more.

Regarding the 25TTS12STRR working principle, thyristors, including the 25TTS12STRR are normally operated in the off-state. This means that the device has a low resistance between its anode and cathode until a voltage is applied to the Gate terminal. This voltage triggers the SCR, which in turn allows the current to flow from the anode to cathode, hence turning the device on.

The 25TTS12STRR can be triggered using either a current or a voltage. The amount of current or voltage required to trigger the device depends on its threshold voltage or firing angle. Once the device is turned on, the current can now flow in both directions, i.e. from the anode to cathode and vice versa. When the triggering voltage or current is removed, the SCR is turned off.

In the case where the triggering current is removed before the current reaches the rated holding current of the device, it will turn off automatically. This is known as the latching operation of the thyristor. This latching operation helps protect the thyristor from being damaged by overcurrents.

Thyristors like the 25TTS12STRR are good power switches, providing reliable and fast switching control. It also has a good performance in the control of high power in a wide range of applications. It’s one of the most versatile switching elements in the field of electrical engineering.

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