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STMicroelectronics ACST1010-7FP
- Part No.:
- ACST1010-7FP
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
ACST1010-7FP.pdf
- Description:
- TRIAC SENS GATE 700V 10A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,149
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Product details
Overview
ACST1010-7FP from STMicroelectronics is a 10 A, 700 V RMS overvoltage-protected AC switch (Triac) with integrated crowbar clamping, low gate trigger current (IGT < 10 mA), and TO-220FPAB insulated package rated for 1500 VRMS isolation. It drives universal motors in washing machines and compressors in refrigerators without external snubbers or transient protection, meeting IEC 61000-4-5 surge and IEC 61000-4-4 fast transient immunity standards.
For engineers reviewing the ACST1010-7FP datasheet, ACST1010-7FP pinout, ACST1010-7FP application, or ACST1010-7FP equivalent, this device is selected for robust AC mains switching in cost-sensitive, thermally constrained appliance control where gate drive simplicity, dV/dt immunity (>2000 V/µs), and self-protecting clamping behavior are critical design requirements.
Technical Context
The ACST1010-7FP integrates a planar Triac structure with an on-chip overvoltage crowbar circuit that triggers into conduction during line transients exceeding ~850 V, safely diverting surge energy through the load. Its gate threshold is specified at ≤1.0 V with IGT ≤10 mA at 25 °C, enabling direct MCU GPIO drive via a single series resistor.
It operates across –40 to +125 °C junction temperature, delivers 10 A RMS continuous current at TC = 84 °C in TO-220FPAB, and sustains non-repetitive surges up to 100 A (20 ms, 50 Hz) without latch-up or degradation. Static dV/dt immunity exceeds 2000 V/µs at 125 °C, eliminating false triggering in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 10 A - Sustains continuous sinusoidal load current up to 10 A at case temperature ≤84 °C in TO-220FPAB package. |
| VDRM / VRRM | 700 V - Blocks 700 V peak AC line voltage in both directions, suitable for 230 VRMS mains with safety margin. |
| IGT (max) | 10 mA - Requires ≤10 mA gate current at 25 °C, enabling direct drive from 3.3 V or 5 V MCUs with RG ≤ 1 kΩ. |
| dV/dt (min) | 2000 V/µs - Immune to rapid voltage transients up to 2 kV/µs at 125 °C, preventing spurious turn-on in motor drive noise. |
| VCL (min) | 850 V - Clamps transients above 850 V by crowbar action, protecting downstream components per IEC 61000-4-5. |
| VTM (max) | 1.5 V - On-state voltage drop ≤1.5 V at 14.1 A pulse, limiting conduction loss to ≤21 W peak under overload. |
| Rth(j-c) | 3.5 °C/W - Junction-to-case thermal resistance enables 10 A operation with modest heatsinking in TO-220FPAB. |
Pinout & Package
ACST1010-7FP uses the TO-220FPAB insulated package: epoxy body with isolated metal tab (1500 VRMS isolation), 3-pin configuration, UL94 V0 rated, and recommended mounting torque of 0.4–0.6 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM | Common terminal (MT1) | Main terminal 1 reference node; connected to neutral or low-side return path in AC bridge configurations. |
| OUT | Output terminal (MT2) | Main terminal 2; carries full load current to AC load (e.g., motor winding); voltage referenced to COM defines blocking state. |
| G | Gate control input | Low-current trigger input; sinking ≤10 mA at ≤1.0 V turns device ON; polarity-insensitive for quadrants I, II, III. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated overvoltage crowbar | Clamps transients ≥850 V by forced conduction, eliminating need for MOVs or TVS diodes in IEC 61000-4-5 compliant designs. |
| High dV/dt immunity | 2000 V/µs minimum at 125 °C ensures reliable blocking during fast EFT bursts without false triggering. |
| Direct MCU gate drive | IGT ≤10 mA allows connection to standard GPIO pins via single current-limiting resistor-no buffer IC required. |
| No snubber needed for inductive loads | Robust commutation performance supports 10 A universal motor or compressor switching without external RC snubbers. |
| Insulated TO-220FPAB package | 1500 VRMS isolation enables safe mounting on PCB without heatsink grounding, reducing creepage/clearance constraints. |
Applications
| Washing Machine Drum Motor Control | Refrigerator Compressor Drive |
|---|---|
|
Use Scenario: Precise speed and direction control of universal motor in washing machine drum using phase-angle or burst-fire AC switching. IC Role / Device Role / Timing Role: AC mains switch replacing mechanical relay; handles bidirectional current, zero-crossing synchronized turn-on, and inductive flyback energy absorption. Use Value: Eliminates relay wear-out and contact arcing; enables silent, maintenance-free motor control with built-in surge protection against motor coil collapse spikes. |
Use Scenario: Start/stop and run-cycle control of hermetic compressor in domestic refrigerator, subjected to high inrush currents and line surges. IC Role / Device Role / Timing Role: High-reliability AC power switch managing 10 A RMS compressor load; withstands 100 A surge during startup without external protection. Use Value: Replaces bulkier Triac+snubber+MOV solutions; reduces BOM count by 3 components while maintaining IEC 61000-4-5 compliance. |
| Air Conditioner Fan Motor Control | Industrial AC Solenoid Actuation |
|
Use Scenario: Continuous-duty fan motor control in split-system air conditioners, operating at elevated ambient temperatures near heat exchangers. IC Role / Device Role / Timing Role: Thermally robust AC switch delivering 10 A RMS at TC = 84 °C; manages PWM-modulated AC power with minimal thermal derating. Use Value: Enables compact, fan-cooled enclosure design due to low Rth(j-c) (3.5 °C/W) and no external heatsink requirement for 8 A typical loads. |
Use Scenario: Fast-acting, high-cycle AC solenoid control in packaging machinery, requiring >10⁶ operations with consistent turn-on timing. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical contactors; provides sub-millisecond turn-on response and precise dwell control. Use Value: Achieves 100% duty cycle capability with no contact welding or bounce; clamping action prevents solenoid coil insulation breakdown during de-energization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACST1035-7FP | Higher IGT (≤35 mA), lower dV/dt immunity (200 V/µs), same VDRM/IT(RMS)/package | Better suited for low-noise environments where gate drive current裕度 is prioritized over EFT resilience | Select when gate driver can supply ≥35 mA and system noise is controlled; not interchangeable in high-dV/dt applications. |
| BTB12-600CW | Standard Triac (no crowbar), 12 A/600 V, TO-220AB, requires external MOV/snubber for IEC 61000-4-5 | Lacks integrated overvoltage protection; needs additional components to meet same surge immunity | Choose only if cost sensitivity outweighs BOM simplification and reliability requirements; not drop-in compatible. |
Compared with ACST1035-7FP, the ACST1010-7FP offers superior noise immunity but demands tighter gate current control; versus BTB12-600CW, it eliminates external protection components and improves long-term reliability in unfiltered mains environments.
Availability
ACST1010-7FP is available at Aetrix Electronics and suitable for washing machine motor control, refrigerator compressor drive, and HVAC fan actuation requiring stable component supply, industrial-grade surge resilience, and simplified thermal management.
Supply support for ACST1010-7FP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The ACST™/ACST family is part of ST's Application-Specific Discrete (A.S.D.®) portfolio, engineered specifically for robust, snubberless AC load switching in home appliances and industrial controls where reliability under transient stress is mandatory.
FAQ
What is the maximum continuous load current the ACST1010-7FP can switch in free-air conditions?
The ACST1010-7FP delivers 10 A RMS continuous current when mounted on a heatsink maintaining case temperature ≤84 °C. In free-air convection (no heatsink), its usable current drops to approximately 3.5 A RMS at 25 °C ambient, as shown in Figure 4 of the datasheet. Derating is linear above 25 °C ambient, reaching ~2 A at 70 °C ambient.
Does the ACST1010-7FP require a snubber circuit when driving a 10 A universal motor?
No. The ACST1010-7FP's planar Triac structure and optimized commutation characteristics allow direct switching of 10 A inductive loads-including universal motors-without external RC snubbers. This is validated in the datasheet's application information section (page 6) and confirmed by its high (dI/dt)c rating of 4.4 A/ms without snubber.
How does the overvoltage crowbar function during an IEC 61000-4-5 2 kV surge event?
During a 2 kV surge (1.2/50 µs voltage waveform), the internal crowbar triggers when voltage across COM–OUT exceeds ~850 V, forcing the device into low-impedance conduction for <10 ms. Energy is safely dissipated through the load, and the device recovers full blocking capability after the next zero-current crossing-enabling ≥10 such events per polarity without degradation.
Can the ACST1010-7FP be driven directly from a 3.3 V microcontroller GPIO pin?
Yes. With IGT ≤10 mA and VGT ≤1.0 V at 25 °C, a 3.3 V MCU GPIO can drive the gate directly using a 220 Ω series resistor (delivering ~10.5 mA). Gate power dissipation remains within limits (PG(AV) = 0.1 W), and the device triggers reliably across –40 to +125 °C, as verified in Figure 9 of the datasheet.
ACST1010-7FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ACS™/A.S.D®
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 700 V
- Current - On State (It (RMS)) (Max):
- 10 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 100A, 105A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 30 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FPAB
ACST1010-7FP FAQ
1.How can I place an order for ACST1010-7FP through Aetrix?
Please submit a Request for Quotation (RFQ) for ACST1010-7FP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ACST1010-7FP reliable?
The price and inventory of ACST1010-7FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ACST1010-7FP is usually 5 days.
3.What payment methods are accepted for ACST1010-7FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ACST1010-7FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ACST1010-7FP?
ACST1010-7FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ACST1010-7FP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ACST1010-7FP?
For technical support, including ACST1010-7FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ACST1010-7FP requirements.
6.How does Aetrix verify that ACST1010-7FP is sourced from the original manufacturer or authorized distributors?
All ACST1010-7FP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ACST1010-7FP meets industry standards.
7.What is the process for return or replacement of ACST1010-7FP?
All ACST1010-7FP units undergo pre-shipment inspection (PSI). If there is an issue with ACST1010-7FP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ACST1010-7FP part is unused and in its original packaging.
Return procedure for ACST1010-7FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ACST1010-7FP Tags
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