ACS108-8SA-AP STMicroelectronics Integrated Circuit (Other) In Stock
STMicroelectronics ACS108-8SA-AP is an 800V, 0.8A overvoltage-protected AC switch triac with matte-tin finish terminals, providing built-in surge protection for robust 230V mains switching in industrial and consumer applications. In-stock inventory available worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 1
- Lifecycle
- END OF LIFE
- Datasheet
- ACS108-8SA-AP Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1989(MOQ 100)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ACS108-8SA-AP?
- 800V repetitive peak off-state voltage with integrated overvoltage protection against AC line surge transients
- 0.8A RMS on-state current with alternistor triac topology enabling bidirectional switching in all 4 quadrants
- Matte tin (Sn) terminal finish compliant with RoHS e3 code for lead-free soldering in eco-design applications
What is ACS108-8SA-AP used for?
The ACS108-8SA-AP is targeted at 230V AC load switching in industrial control panels, white goods motor drives, and HVAC fan controllers where built-in overvoltage protection eliminates the need for an external transient voltage suppressor (TVS) or varistor on the AC line. Its 800V rating and single-element alternistor design make it suitable for solid-state relay output stages, soft-start modules up to 150W, and microcontroller-driven AC switch arrays in smart building automation systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Where can I find the ACS108-8SA-AP datasheet?
ACS108-8SA-AP Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ACS108-8SA-AP?
Compatible alternatives and drop-in replacements for ACS108-8SA-AP:
STMicroelectronics TRIAC
Frequently Asked Questions
What overvoltage protection does ACS108-8SA-AP provide, and how does it differ from a standard ACS108-6SA?
The ACS108-8SA-AP integrates overvoltage protection that clamps transient spikes exceeding the 800V rated VDRM, protecting downstream circuitry without an external MOV or TVS suppressor on the 230V AC line. The ACS108-6SA by contrast is rated at 800V without this integrated overvoltage protection, so the -8SA-AP variant reduces component count and improves system robustness against switching surges of several hundred volts above the nominal line voltage.
Which industrial applications benefit most from the ACS108-8SA-AP 0.8A current rating at 800V?
At 0.8A RMS and 800V, the ACS108-8SA-AP can switch resistive loads up to approximately 180W on 230V AC, covering applications such as heating element control in coffee machines, solenoid valve drivers (typically 10-50VA), and contactor coil energizers in HVAC units. Its TO-92-class footprint and -AP packaging variant (ammo pack) also suit moderate-volume production of industrial timer relays and programmable logic controller output modules.
How does the matte tin terminal finish on ACS108-8SA-AP affect soldering compatibility and shelf life?
The matte tin (Sn) finish on ACS108-8SA-AP terminals is lead-free and compliant with JESD-609 code e3, supporting reflow and wave soldering processes at peak temperatures up to 260°C per J-STD-020. Matte tin provides superior solderability retention over 2-year shelf life compared to bright tin, and eliminates whisker risk when processed correctly above 180°C, meeting IPC-7711 handling requirements for TO-92 through-hole components.
When is ACS108-8SA-AP a better procurement choice than a higher-current D-PAK triac for a 100W AC load?
For loads under 100W at 230V AC (approximately 435mA), the ACS108-8SA-AP in TO-92 through-hole format is lower cost, simpler to prototype, and requires no PCB copper pour heatsinking that a D-PAK demands at elevated junction temperatures near 125°C. A D-PAK or D2-PAK triac rated at 4A or 6A carries significant cost premium and board area overhead; the ACS108-8SA-AP's 0.8A rating and integrated overvoltage protection make it the economical choice for loads well below its thermal ceiling.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.3641 | $36.41 |
| 500+ | $0.2789 | $139.44 |
| 1000+ | $0.2514 | $251.42 |
| 2000+ | $0.2283 | $456.58 |
| 4000+ | $0.2088 | $835.32 |
| 6000+ | $0.1989 | $1193.52 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit