TRIACs | BT136 | BTA12 | RS
최근 검색 기록

    TRIACs

    A TRIAC (triode for alternating current, also known as bidirectional triode thyristor or a bilateral triode thyristor) is a silicon semiconductor component with three terminals or legs that allow current to flow in either direction when triggered. TRIACs are a subset of thyristors Thyristor guide and are similar to SCRs (silicon controlled rectifiers). However, unlike SCRs and other thyristors, which are unidirectional, the TRIAC is able to control current over both halves of the sine wave, making TRIACs bidirectional. A TRIAC is a 4-layer silicon component that is PNPN in the positive direction and NPNP in the negative direction. The devices come in panel mount, surface mount, and through-hole mounting options in various package types to suit a wide variety of electronics applications and circuits.RS have a curated range of TRIACs from a multitude of trusted brands, including Littelfuse, STMicroelectronics, WeEn Semiconductors Co., and many more.

    How does a TRIAC work?

    In basic terms, a TRIAC is a low-to-medium power semi-latching solid-state switch. The device acts like two standard thyristors inversely connected in parallel or back to back. To activate the component a voltage needs to be applied to the gate terminal, and TRIACs can be triggered by either negative or positive voltages, whereas SCRs require a positive voltage. Once the gate current is triggered, a TRIAC will continue to conduct even if the supply to the gate is removed.

    On a TRIAC symbol, there are three terminals. These terminals are:

    • MT1 Anode 1 (Main Terminal 1)
    • MT2 Anode 2 (Main Terminal 2)
    • Gate Terminal

    What are TRIACs used for?

    TRIACs are widely used for switching and power control of AC systems. TRIACS are particularly useful in applications such as lighting dimmer switches, as they enable the utilisation of each half-cycle of the AC wave. The solid-state device can be used in a circuit as a simple on-off device in a wide range of electronic applications. Some of the more common areas are:

    • Temperature control
    • Liquid level control
    • Dimmers for domestic lighting
    • Small motor control
    • Speed control for electric fans

    673 표시되는 제품 TRIACs

    STMicroelectronics
    4A
    Through Hole
    TO-220ABFP
    10mA
    800V
    32A
    3
    1V
    800V
    20mA
    10.4 x 4.6 x 16.4mm
    10.4mm
    4.6mm
    16.4mm
    STMicroelectronics
    8A
    Surface Mount
    D2PAK (TO-263)
    35mA
    600V
    84A
    3
    1.3V
    600V
    35mA
    10.28 x 9.35 x 4.6mm
    10.28mm
    9.35mm
    4.6mm
    STMicroelectronics
    25A
    Through Hole
    TO-220AB
    100mA
    800V
    260A
    3
    1.3V
    600V
    80mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    STMicroelectronics
    16A
    Through Hole
    TO-220AB
    50mA
    600V
    168A
    3
    1V
    600V
    75mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    WeEn Semiconductors Co., Ltd
    4A
    Through Hole
    SOT-82
    70mA
    600V
    27A
    3
    1.5V
    600V
    15mA
    7.8 x 2.8 x 11.1mm
    7.8mm
    2.8mm
    11.1mm
    STMicroelectronics
    20A
    Through Hole
    TO-220AB
    35mA
    600V
    210A
    3
    1V
    600V
    35mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    Fagor Electronica
    25A
    Through Hole
    TO-220AB
    50mA
    800V
    -
    3
    1.3V
    800V
    75mA
    10.24 x 4.62 x 15.68mm
    10.24mm
    4.62mm
    15.68mm
    STMicroelectronics
    10A
    Through Hole
    TO-220AB
    50mA
    800V
    105A
    3
    1.3V
    800V
    50mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    STMicroelectronics
    25A
    Surface Mount
    D2PAK (TO-263)
    35mA
    600V
    260A
    3
    1.3V
    600V
    80mA
    10.28 x 9.35 x 4.6mm
    10.28mm
    9.35mm
    4.6mm
    WeEn Semiconductors Co., Ltd
    8A
    Through Hole
    TO-220AB
    100mA
    600V
    71A
    3
    1.5V
    600V
    40mA
    10.3 x 4.7 x 9.4mm
    10.3mm
    4.7mm
    9.4mm
    STMicroelectronics
    12A
    Surface Mount
    D2PAK (TO-263)
    35mA
    800V
    126A
    3
    1.3V
    800V
    35mA
    10.28 x 9.35 x 4.6mm
    10.28mm
    9.35mm
    4.6mm
    STMicroelectronics
    40A
    Panel Mount
    RD-91
    100mA
    600V
    420A
    3
    1.3V
    600V
    80mA
    40 x 27 x 14mm
    40mm
    27mm
    14mm
    STMicroelectronics
    1A
    Surface Mount
    SOT-223
    25mA
    -
    8.5A
    4
    -
    800V
    7mA
    6.7 x 3.7 x 1.8mm
    6.7mm
    3.7mm
    1.8mm
    WeEn Semiconductors Co., Ltd
    25A
    Through Hole
    TO-220AB
    70mA
    600V
    209A
    3
    1.5V
    600V
    60mA
    10.3 x 4.7 x 9.4mm
    10.3mm
    4.7mm
    9.4mm
    Littelfuse
    16A
    Surface Mount
    TO-263
    35mA
    600V
    -
    3
    1.3V
    -
    -
    -
    -
    -
    -
    STMicroelectronics
    16A
    Through Hole
    TO-220AB
    50mA
    600V
    168A
    3
    1.3V
    600V
    50mA
    10.4 x 4.6 x 9.3mm
    10.4mm
    4.6mm
    9.3mm
    STMicroelectronics
    4A
    Surface Mount
    DPAK (TO-252)
    5mA
    800V
    31A
    3
    1.3V
    800V
    10mA
    6.73 x 6.22 x 2.4mm
    6.73mm
    6.22mm
    2.4mm
    STMicroelectronics
    1A
    Surface Mount
    SOT-223
    10mA
    600V
    8.5A
    3+Tab
    1.3V
    -
    10mA
    6.7 x 3.7 x 1.8mm
    6.7mm
    3.7mm
    1.8mm
    STMicroelectronics
    8A
    Surface Mount
    D2PAK (TO-263)
    10mA
    600V
    84A
    3
    1V
    600V
    25mA
    10.28 x 9.35 x 4.6mm
    10.28mm
    9.35mm
    4.6mm
    STMicroelectronics
    4A
    Through Hole
    TO-220ABFP
    10mA
    800V
    32A
    3
    1V
    800V
    20mA
    10.4 x 4.6 x 16.4mm
    10.4mm
    4.6mm
    16.4mm
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