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    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

    688 Produkter som visas för TRIACs

    • RS-artikelnummer 877-2602
    • Tillv. art.nr BTA08-800CRG
    Var (i ett paket med 10)
    9,117 kr
    STMicroelectronics
    8A
    Through Hole
    TO-220AB
    50mA
    800V
    84A
    3
    1.3V
    800V
    25mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    • RS-artikelnummer 211-6812
    • Tillv. art.nr T835H-8G-TR
    Var (i ett paket med 10)
    9,372 kr
    STMicroelectronics
    8A
    Surface Mount
    D²PAK
    35mA
    800V
    -
    3
    1.3V
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 544-9961
    • Tillv. art.nr 2N6075AG
    Varje
    7,69 kr
    Littelfuse
    4A
    Through Hole
    TO-225
    10mA
    600V
    30A
    3
    2.5V
    600V
    15mA
    7.74 x 2.66 x 11.04mm
    7.74mm
    2.66mm
    11.04mm
    • RS-artikelnummer 829-4014P
    • Tillv. art.nr BTA25-600B
    Varje (levereras i en påse)
    99,85 kr
    STMicroelectronics
    25A
    Panel Mount
    RD-91
    100mA
    800V
    260A
    3
    1.3V
    600V
    80mA
    40 x 27 x 14mm
    40mm
    27mm
    14mm
    Var (i ett rör med 30)
    101,073 kr
    STMicroelectronics
    40A
    Through Hole
    TOP3
    200mA
    1200V
    590A
    3
    1.5V
    1200V
    -
    15.5 x 4.6 x 12.85mm
    15.5mm
    4.6mm
    12.85mm
    • RS-artikelnummer 213-0883
    • Tillv. art.nr QV6016NH4RP
    Var (i en rulle med 500)
    24,461 kr
    Littelfuse
    16A
    Surface Mount
    TO-263
    35mA
    600V
    -
    3
    1.3V
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 714-2568
    • Tillv. art.nr BTA08-600CRG
    Var (i ett paket med 5)
    7,302 kr
    STMicroelectronics
    8A
    Through Hole
    TO-220AB
    50mA
    -
    -
    3
    1.3V
    600V
    25mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    • RS-artikelnummer 877-2602P
    • Tillv. art.nr BTA08-800CRG
    Varje (levereras i ett rör)
    12,997 kr
    STMicroelectronics
    8A
    Through Hole
    TO-220AB
    50mA
    800V
    84A
    3
    1.3V
    800V
    25mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    Varje
    5,88 kr
    WeEn Semiconductors Co., Ltd
    8A
    Surface Mount
    D2PAK (TO-263)
    70mA
    800V
    71A
    3
    1.5V
    800V
    20mA
    10.3 x 9.4 x 4.5mm
    10.3mm
    9.4mm
    4.5mm
    • RS-artikelnummer 714-2568P
    • Tillv. art.nr BTA08-600CRG
    Varje (levereras i ett rör)
    7,302 kr
    STMicroelectronics
    8A
    Through Hole
    TO-220AB
    50mA
    -
    -
    3
    1.3V
    600V
    25mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    • RS-artikelnummer 829-3806
    • Tillv. art.nr BTA06-600BWRG
    Var (i ett paket med 10)
    8,053 kr
    STMicroelectronics
    6A
    Through Hole
    TO-220AB
    50mA
    800V
    63A
    3
    1.3V
    600V
    50mA
    10.4 x 4.6 x 15.9mm
    10.4mm
    4.6mm
    15.9mm
    • RS-artikelnummer 213-3383
    • Tillv. art.nr T835H-8I
    Var (i ett rör med 50)
    9,126 kr
    STMicroelectronics
    8A
    -
    TO-220AB
    35mA
    -
    -
    3
    -
    -
    -
    -
    -
    -
    -
    Var (i ett paket med 5)
    9,782 kr
    WeEn Semiconductors Co., Ltd
    16A
    Through Hole
    TO-220AB
    70mA
    800V
    170A
    3
    1.5V
    800V
    45mA
    10.3 x 4.7 x 9.4mm
    10.3mm
    4.7mm
    9.4mm
    • RS-artikelnummer 165-7419
    • Tillv. art.nr ACS102-6T1-TR
    Var (i en rulle med 2500)
    2,352 kr
    STMicroelectronics
    -
    Surface Mount
    SOIC
    -
    -
    -
    8
    -
    -
    -
    5 x 4 x 1.25mm
    5mm
    4mm
    1.25mm
    • RS-artikelnummer 168-6664
    • Tillv. art.nr BTA41-600BRG
    Var (i ett rör med 30)
    45,907 kr
    STMicroelectronics
    40A
    Through Hole
    TOP3
    100mA
    600V
    420A
    3
    1.3V
    600V
    80mA
    15.5 x 4.6 x 12.85mm
    15.5mm
    4.6mm
    12.85mm
    • RS-artikelnummer 178-1398
    • Tillv. art.nr BTA26-800BRG
    Var (i ett rör med 30)
    46,411 kr
    STMicroelectronics
    25A
    Through Hole
    TOP3
    100mA
    800V
    260A
    3
    1.3V
    800V
    80mA
    15.5 x 4.6 x 21.1mm
    15.5mm
    4.6mm
    21.1mm
    • RS-artikelnummer 168-6787
    • Tillv. art.nr BTA41-800BRG
    Var (i ett rör med 30)
    45,388 kr
    STMicroelectronics
    40A
    Through Hole
    TOP3
    100mA
    800V
    420A
    3
    1.3V
    800V
    80mA
    15.5 x 4.6 x 12.85mm
    15.5mm
    4.6mm
    12.85mm
    • RS-artikelnummer 103-1576
    • Tillv. art.nr BTA26-800CWRG
    Var (i ett rör med 30)
    44,017 kr
    STMicroelectronics
    25A
    Through Hole
    TOP3
    35mA
    800V
    260A
    3
    1.3V
    800V
    50mA
    15.5 x 4.6 x 12.85mm
    15.5mm
    4.6mm
    12.85mm
    • RS-artikelnummer 213-3381
    • Tillv. art.nr T1605G-6I
    Var (i ett paket med 10)
    8,745 kr
    STMicroelectronics
    16A
    -
    TO-220AB
    5mA
    -
    -
    3
    -
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 213-3380
    • Tillv. art.nr T1605G-6I
    Var (i ett rör med 50)
    10,927 kr
    STMicroelectronics
    16A
    -
    TO-220AB
    5mA
    -
    -
    3
    -
    -
    -
    -
    -
    -
    -
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