ACST410-8FI STMicroelectronics Transistor (Transistor Outline, Vertical) In Stock
STMicroelectronics ACST410-8FI is a 4 A AC power switch triac with a gate trigger current below 10 mA, rated for 800 V blocking voltage. Designed for direct interfacing with microcontrollers in AC load switching applications. Available in vertical TO package with worldwide distribution.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- ACST410-8FI Datasheet PDF
- Category
- Transistor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ACST410-8FI?
- 4 A load current with gate trigger current below 10 mA enabling direct drive from microcontroller outputs without additional driver stages
- 800 V blocking voltage rating providing robust performance in 110 V and 230 V AC mains applications
- Optimized for logic-level triggering, reducing BOM complexity in AC power control designs
What is ACST410-8FI used for?
The ACST410-8FI is designed for AC power switching in domestic appliances, motor control, and lighting dimmer circuits where direct logic-level gate drive from a microcontroller is required. Its sub-10 mA gate trigger current allows interfacing directly with standard 3.3 V or 5 V microcontroller GPIO pins. The 4 A rated load current and 800 V blocking voltage make it suitable for controlling heaters, fans, and solenoid valves on 230 V AC mains.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the ACST410-8FI datasheet?
ACST410-8FI Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ACST410-8FI?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What load current and blocking voltage does the ACST410-8FI support in AC mains applications?
The ACST410-8FI supports a 4 A RMS load current and an 800 V repetitive peak off-state voltage (VDRM), making it suitable for controlling resistive and inductive loads on both 110 V and 230 V AC mains without additional voltage margin components in the circuit design.
Can ACST410-8FI be triggered directly from a 3.3 V microcontroller GPIO pin?
Yes. The ACST410-8FI requires a gate trigger current below 10 mA, which is within the drive capability of most 3.3 V or 5 V microcontroller GPIO outputs. This eliminates the need for a dedicated gate driver IC, reducing BOM cost and board space in AC power control designs with up to 4 A loads.
In what AC load switching scenarios does ACST410-8FI outperform a relay-based solution?
The ACST410-8FI offers silent solid-state switching with no mechanical wear, compared to relay contacts that degrade after tens of thousands of cycles. With a 4 A current rating, 800 V blocking, and sub-10 mA gate current, it suits high-frequency on/off control of heaters, fans, and lighting loads where relay bounce, noise, or lifetime limitations are unacceptable in the design.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
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