{"product_id":"bta-bidirectional-thyristor-module-40a-100a-1000v","title":"BTA Bidirectional Thyristor Module 40A–100A 1000V | TRIAC","description":"\n\u003ch2\u003eBTA High-Power Bidirectional Thyristor Module | 40A \/ 60A \/ 80A \/ 100A — 1000V\u003c\/h2\u003e\n\u003cp\u003eUpgrade your industrial and DIY power-control applications with this compact, high-performance \u003cstrong\u003ebidirectional thyristor (TRIAC) module\u003c\/strong\u003e. Available in 40A, 60A, 80A, and 100A ratings at 1000V, this module is purpose-built for demanding applications such as \u003cstrong\u003espot welding machines, AC motor drives, power regulators, and industrial heating controls\u003c\/strong\u003e. Its small form factor and robust construction make it an excellent choice wherever efficient, reliable AC switching is required.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Options:\u003c\/strong\u003e 40A, 60A, 80A, or 100A on-state average current ratings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 1000V maximum forward\/reverse blocking voltage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBidirectional Operation:\u003c\/strong\u003e Conducts in both directions — ideal for AC load switching and phase control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Module Design:\u003c\/strong\u003e High power density in a small package for space-constrained builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomizable:\u003c\/strong\u003e Available in various configurations to suit specific circuit requirements\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New Condition:\u003c\/strong\u003e Factory-fresh components with no high-concern chemicals\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBidirectional Thyristor (TRIAC) Module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40A \/ 60A \/ 80A \/ 100A (on-state average)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Blocking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Forward \/ Reverse Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150A (peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCustomized\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e⚠️ Important Selection \u0026amp; Usage Guidelines\u003c\/h3\u003e\n\u003ch4\u003e1. Choosing the Correct Current Rating\u003c\/h4\u003e\n\u003cp\u003eThe marked current on this power module represents the \u003cstrong\u003eaverage on-state value\u003c\/strong\u003e, not the continuous RMS operating value. Always leave adequate margin based on your actual working environment:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResistive loads:\u003c\/strong\u003e Apply a 2× to 2.5× margin — Actual Current (A) × 2 to 2.5 = Module Nominal Current (A)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInductive loads:\u003c\/strong\u003e Apply a 6× to 7× margin — Actual Current (A) × 6 to 7 = Module Nominal Current (A)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e2. Heat Sink Requirement\u003c\/h4\u003e\n\u003cp\u003eWhen your actual working current exceeds \u003cstrong\u003e5A\u003c\/strong\u003e, a properly sized heat sink \u003cstrong\u003emust\u003c\/strong\u003e be installed. Operating the module without adequate thermal management at higher currents may cause premature failure or damage to surrounding components.\u003c\/p\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSpot welding machines\u003c\/li\u003e\n  \u003cli\u003eAC motor speed control\u003c\/li\u003e\n  \u003cli\u003eIndustrial heating and temperature regulation\u003c\/li\u003e\n  \u003cli\u003ePower dimming and phase control circuits\u003c\/li\u003e\n  \u003cli\u003eSoft-start circuits for motors and transformers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor safe handling of electronic components and best practices in power electronics, refer to guidance from the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Occupational Safety and Health Administration (OSHA) — Electrical Safety\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between a bidirectional thyristor module and a standard SCR module?\u003c\/h4\u003e\n\u003cp\u003eA: A bidirectional thyristor (TRIAC) module can conduct current in \u003cstrong\u003eboth directions\u003c\/strong\u003e, making it ideal for controlling AC loads. A standard SCR (Silicon Controlled Rectifier) only conducts in one direction and is typically used in DC or half-wave AC applications. This BTA module is the preferred choice for full AC switching, motor control, and spot welding machines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need a heat sink with this thyristor module?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — if your operating current exceeds 5A, a suitable heat sink is \u003cstrong\u003erequired\u003c\/strong\u003e. Without proper thermal dissipation, the module may overheat and fail. The heat sink should be selected based on the module's actual power dissipation and the ambient temperature of your installation environment.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I select the right current rating (40A, 60A, 80A, or 100A) for my application?\u003c\/h4\u003e\n\u003cp\u003eA: The rated current is the average on-state value, not the continuous RMS load current. For \u003cstrong\u003eresistive loads\u003c\/strong\u003e, multiply your actual load current by 2 to 2.5 to determine the correct module rating. For \u003cstrong\u003einductive loads\u003c\/strong\u003e (motors, transformers, coils), multiply by 6 to 7 to ensure reliable, long-term operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module suitable for spot welding machines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This high-power bidirectional thyristor module is specifically suited for spot welding machine applications due to its high current capacity, robust 1000V blocking voltage, and bidirectional AC switching capability. Ensure you select the appropriate current rating with proper margin for your specific welder's load characteristics.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between a bidirectional thyristor module and a standard SCR module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A bidirectional thyristor (TRIAC) module can conduct current in both directions, making it ideal for controlling AC loads. A standard SCR (Silicon Controlled Rectifier) only conducts in one direction and is typically used in DC or half-wave AC applications. 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