ACST1635-8FP AC Switches by STMicroelectronics

Overvoltage protected AC switch

Status: Active
Series: ACST1635-8FP
RoHS: Compliant
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The ACST1635-8FP belongs to the AC power switch range built with A.S.D. ® technology. This high performance device is designed for home appliances or industrial systems and drives loads up to 16 A. This ACST1635-8FP switch embeds a Triac structure with a high voltage crowbar device to absorb the inductive turn-off energy and withstand line surges such as those described in the IEC 61000-4-5 (surge immunity test).
Distributor Stock
Logo for element14 element14
298 units
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Logo for Transfer Multisort Elektronik Transfer Multisort Elektronik
68 units
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Logo for Avnet Europe Avnet Europe
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Logo for Future Electronics Future Electronics
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Enables equipment to meet IEC 61000-4-5 surge with overvoltage crowbar technology
High noise immunity against static dV/dt and IEC 61000-4-4 burst
High junction temperature: Tj= 150 °C
Needs no external over-voltage protection
VCLgives headroom before clamping then crowbar action
Reduces component count
ECOPACK®2 compliant component
Complies with UL standards (File ref: E81734)
Provides UL certified insulation rated at 2000 V rms


Application Notes
AN2986 AC switch triggering with 3.3 V power supply
AN5649 How to evaluate and improve Triacs immunity to EFT bursts
AN4993 How to implement a SCR or a Triac in a hybride relay application
AN4363 How to select the Triac, ACS, or ACST that fits your application
AN441 Inductive load control with AC switches
AN4564 Is a positive power supply mandatory for my application, or could a negative output work also?
AN3168 Non-insulated SCR / Triac control circuits
AN2703 Parameter list for SCRs, Triacs, AC Switches, and Diacs
AN533 SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting
AN2991 Single-phase induction motor drive for refrigerator compressor application (formerly AN1354)
AN440 Triac control with a microcontroller powered from a positive supply

Alternative Descriptions

TRIAC, 16A, 800V, TO-220FPAB-3 | Farnell
Thyristor: AC switch | Transfer Multisort Elektronik
Thyristor TRIAC 800V 147A 3-Pin TO-220FPAB Tube | Avnet Europe
ACS Series 800 V 16 A Flange Mount Overvoltage Protected AC Switch-TO-220FP | Future Electronics
OverVltg protected A C switch 1500 Vrms | Mouser Electronics
Triac, 16A, 800V, To-220Fpab-3 | Newark Electronics

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Frequently Asked Questions

Where can I find additional details, specifications and documents for a ACST1635-8FP?

Additional datasheets, footprints and schematics for ACST1635-8FP are listed on our Part Details page. You can also find images and similar parts to ACST1635-8FP on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ACST1635-8FP on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ACST1635-8FP price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ACST1635-8FP fall under?

The ACST1635-8FP is listed under Thyristors (SCR) and AC Switches > AC Switches > Overvoltage protected ACST series.

Can I view similar or alternative parts?

You can view similar parts to ACST1635-8FP when available in the Overvoltage protected ACST series range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the ACST1635-8FP you can contact the distributor directly for product support, shipping queries etc.

Is the ACST1635-8FP RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for ACST1635-8FP have stock available?

Authorised distributors including Farnell, element14, Transfer Multisort Elektronik, Avnet Europe and Future Electronics have stock available or on a lead time for ACST1635-8FP.

How do I check stock and lead times for all distributors?

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