About Thyristors

Thyristors

A thyristor is a type of semiconductor device that acts like a switch, allowing energy to flow in one direction only. It is a three-terminal electronic device composed of four layers of alternating P-type and N-type material that can operate in four different states: off, forward blocking, reverse blocking, and forward conducting. In its off state, the thyristor does not conduct current; in its forward blocking state, it allows current to flow in the forward direction only; in its reverse blocking state, it allows current to flow in the reverse direction only; and in its forward conducting state, it allows current to flow in either the forward or reverse direction. Thyristors can be used in many applications such as power control, over-current protection, motor speed control, and lighting dimmers.

Thyristors

Diacs

SCR Modules

SCRs

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Thyristor Surge Protection Devices - TSPD

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty

BTA206X-800ET:127

NXP Semiconductors Triacs 3Q HI-COM TRIAC
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NXP

3004
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February 2026

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AUD 0.4712

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T1235T-8FP

Triacs 12A Snubberless Triac 15000V rms
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STMicroelectronics

2983
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AUD 1.251

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P0300SBLRP

Thyristor Surge Protection Devices - TSPD 100A 25V
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Littelfuse

2965
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10	1	2	3	4	5	6	7

AUD 0.729

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BT168GW

Thyristor; 800V; 1A; 40uA; Package: Reel, tape; SMD; SOT223; Ifsm:12A
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CDIL

2958
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AUD 0.2842

Multiples of: 5

CS30-16io1

Thyristor; 1.6kV; 30A; 47A; 55mA; Package: tube; THT; TO247AD
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IXYS

2956
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AUD 5.106

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Z0107MA,412

Triacs BULKSL TRIAC
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WeEn Semiconductor

2948
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AUD 0.1606

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Z0109MA 2AL2

STMicroelectronics Triacs 1A Triacs
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STMicroelectronics

2944
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AUD 0.1182

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S6020LTP

SCRs 600V 20A
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Littelfuse

2938
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10	1	2	3	4	5	6	7

AUD 2.0976

Multiples of: 1000

P3100SDLRP

Thyristor Surge Protection Devices - TSPD HIGH SURGE 275V 1000A
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Littelfuse

2929
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AUD 1.2362

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VS-40TPS12A-M3

SCRs 35A 1200V Single SCR
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Vishay

2902
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March 2026