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Thyristors

Thyristors deliver 2 kA surge protection in compact DO-214AB package

May 8, 2025 By Emma Lutjen

Littelfuse, Inc. has launched the Pxxx0S3G-A SIDACtor Protection Thyristor Series, featuring 2 kA surge protection in a compact DO-214AB (SMC) package. The new devices enable product miniaturization while maintaining protection against severe overvoltage transients in harsh environments, including onboard chargers, EV charging stations, industrial automation power supplies, and solar inverters. The Pxxx0S3G-A Series provides high […]

Filed Under: Automotive, EV Engineering, Thyristors Tagged With: littlefuse

Thyristors provide high surge-current overvoltage protection in compact package

September 1, 2022 By Lee Teschler

littelfuse

The new Pxxx0S3N SIDACtor Protection Thyristor Series safeguards exposed interfaces in industrial and ICT applications, including RS-485 data interfaces and ac/dc power supplies. Providing equipment in harsh environments with increased protection from severe overvoltage transients assists designers in complying with regulatory requirements. Available in a compact, DO-214AB (SMC) package, the Pxxx0S3N SIDACtor series is designed […]

Filed Under: Power Components, Thyristors Tagged With: littelfuse

How do phase control, bidirectional, and bypass thyristors work?

July 21, 2022 By Jeff Shepard

Thyristors are four-layer semiconductor switches with alternating layers of P- and N-type materials. While all thyristors share the same basic structure, the details of their implementation and packaging can be modified to meet the needs of specific applications. This FAQ reviews basic phase control thyristor (PCT) operation, then looks at the use of bidirectional controlled […]

Filed Under: FAQ, Featured, Thyristors Tagged With: FAQ

How does a silicon controlled rectifier work?

July 18, 2022 By Jeff Shepard

A silicon controlled rectifier (SCR) is a four-layer power semiconductor device. The term ‘silicon controlled rectifier’ was coined by General Electric when SCRs were first introduced in 1957. Like rectifiers, SCRs are unidirectional devices. Today, SCRs are recognized as a type of thyristor. Other types of thyristors, such as triacs, are inherently bidirectional. This FAQ […]

Filed Under: FAQ, Featured, Thyristors, Triacs Tagged With: FAQ

Thyristors provide high surge current overvoltage protection in compact package

May 16, 2022 By Redding Traiger

Littelfuse, Inc. announced the new Pxxx0S3N SIDACtor Protection Thyristor Series, which safeguards exposed interfaces in industrial and ICT applications, including RS-485 data interfaces and AC/DC power supplies. Providing equipment in harsh environments with increased protection from severe overvoltage transients assists designers in complying with regulatory requirements. Available in a compact, DO-214AB (SMC) package, the Pxxx0S3N SIDACtor series is […]

Filed Under: AC-DC, Development Tools, Power Components, Power Management, surge protection, Thyristors Tagged With: littelfuse

Thyristors provide 3-kA surge protection with low thermal accumulation

April 5, 2022 By Redding Traiger

Littelfuse, Inc. announced the new Pxxx0S3N SIDACtor Protection Thyristor Series, which safeguards exposed interfaces in industrial and ICT applications, including RS-485 data interfaces and AC/DC power supplies. Providing equipment in harsh environments with increased protection from severe overvoltage transients assists designers in complying with regulatory requirements. Available in a compact, DO-214AB (SMC) package, the Pxxx0S3N SIDACtor series is […]

Filed Under: AC-DC, Automotive, Development Tools, Industrial, Power Components, Power Management, Thyristors Tagged With: littelfuse

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