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STMicroelectronics ACS102-5TA
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- Part No.:
- ACS102-5TA
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
ACS102-5TA.pdf
- Description:
- TRIAC SENS GATE 500V 0.2A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,122
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Product details
Overview
ACS102-5TA from STMicroelectronics is a single-pole AC line switch in TO-92 package, designed for full-cycle on/off control of low-power inductive and resistive loads up to 0.2 A RMS at 100 °C ambient. It integrates an avalanche-clamping structure (VCL = 600 V), gate-level shifter driver, and negative-gate-triggering logic. Used in appliance motor drivers, solenoid valves, and door locks.
For engineers reviewing the ACS102-5TA datasheet, ACS102-5TA pinout, ACS102-5TA application, or ACS102-5TA equivalent, key selection criteria include clamping voltage robustness (600 V), gate trigger current < 5 mA, integrated overvoltage protection per IEC61000-4-5, and direct microcontroller interface without external snubbers or isolation.
Technical Context
The ACS102-5TA implements ST's ASD™ architecture with monolithically integrated high-voltage clamping diode and gate driver stage. Its negative-gate triggering (IGT < 5 mA) enables direct connection to MCU GPIOs via a series resistor, eliminating optocouplers or discrete level shifters.
It sustains 2 kV non-repetitive line pulse voltage per IEC61000-4-5, dissipates up to 20 mJ turn-off energy in its internal clamp section, and operates across -30 °C to +125 °C junction temperature with no external protection required for standard appliance transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 500 V - blocking capability for 230 V AC mains with safety margin |
| VCL | 600 V - clamping voltage limits inductive kickback during turn-off |
| IT(RMS) | 0.2 A - continuous load current rating at Tamb = 100 °C (TO-92) |
| IGT | < 5 mA - minimal gate drive current enables direct MCU interfacing |
| dI/dt (critical) | 20 A/µs - supports fast-switching inductive loads without commutation aid |
| Tj range | -30 to +125 °C - qualified for harsh appliance environments |
| Rth(j-a) | 150 °C/W - thermal resistance defines heatsinking requirements for TO-92 |
Pinout & Package
ACS102-5TA uses TO-92 plastic package (3-pin, straight lead). Pin assignment is standardized: Pin 1 = G (Gate), Pin 2 = COM (Common reference/neutral connection), Pin 3 = OUT (Switch output to load).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate input | Negative-current-triggered control terminal; sinks current from MCU GPIO through series resistor |
| COM | Common reference | Connects to AC neutral or system common; serves as thermal and electrical reference for gate driver |
| OUT | Switch output | High-side AC output terminal connected to load; withstands 500 V repetitive blocking |
Key Features
| Feature | Design Value |
|---|---|
| Integrated avalanche clamping | Clamps inductive turn-off energy (up to 20 mJ) without external components |
| Direct microcontroller interface | Eliminates optocoupler, level shifter, and gate resistor network |
| No external overvoltage protection | Meets IEC61000-4-5 (2 kV surge) and IEC335-1 without added TVS or MOV |
| Negative gate triggering | Enables safe, stress-free gate drive with standard CMOS outputs |
| Single-package AC switching | Replaces triac + snubber + driver IC stack, reducing BOM count by ~80% |
Applications
| Washing Machine Door Lock Control | Dishwasher Solenoid Valve Driver |
|---|---|
Use Scenario: Precise ON/OFF actuation of electromechanical door lock during cycle phases. IC Role / Device Role / Timing Role: AC line switch providing zero-crossing–free, full-cycle conduction control with fast turn-off. Use Value: Eliminates need for snubber networks and optoisolators while sustaining 0.2 A RMS load current and 2 kV surge immunity. | Use Scenario: Driving 230 V AC solenoid valves for detergent/water dispensing. IC Role / Device Role / Timing Role: High-dV/dt immune AC switch handling inductive turn-off energy up to 20 mJ. Use Value: Internal clamping (VCL = 600 V) absorbs inductive kickback, enabling reliable 100,000+ cycle lifetime without external diodes. |
| Refrigerator Fan Motor Switch | Electric Cookware Lamp Control |
Use Scenario: Cycling condenser fan motor in response to temperature feedback. IC Role / Device Role / Timing Role: Low-loss AC switch operating at 0.2 A RMS with 1.2 V on-state drop (VTM). Use Value: Junction-to-ambient thermal resistance of 150 °C/W allows operation at 100 °C ambient without heatsink. | Use Scenario: Dimmable or on/off control of incandescent indicator lamps. IC Role / Device Role / Timing Role: Resistive load switch with 500 V blocking and 600 V clamping for transient suppression. Use Value: Withstands 2 kV line surges per IEC61000-4-5, ensuring lamp circuit reliability in shared household wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC line switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACS108-5TA | Higher IT(RMS) = 0.8 A; same VDRM/VCL; TO-92 package | Supports heavier loads (e.g., larger pumps, compressors); higher thermal dissipation | Select when load current exceeds 0.2 A but space remains constrained to TO-92 footprint |
| ACS102-5T1 | SO-8 package; identical electrical specs; 40 mm² copper pad required for thermal performance | Enables multi-device mounting on shared cooling pad; better for high-volume PCB assembly | Choose for automated SMT production and thermal management via PCB copper area |
Compared with ACS102-5TA, ACS108-5TA offers 4× higher current capacity in the same TO-92 outline, while ACS102-5T1 retains identical electrical behavior but shifts thermal path to PCB copper-making it preferable for volume manufacturing where layout-controlled heatsinking is feasible.
Availability
ACS102-5TA is available at Aetrix Electronics and suitable for washing machine control modules, dishwasher valve drivers, refrigerator fan circuits, and electric cookware lamp systems requiring stable component supply and long-term industrial availability.
Supply support for ACS102-5TA 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and appliance markets.
The ACS™ AC line switch product line was developed specifically to replace triac-based solutions in white goods, offering integrated clamping, simplified drive, and IEC-compliant surge ruggedness for cost-sensitive, high-reliability appliance control.
FAQ
What is the maximum load current the ACS102-5TA can switch continuously?
The ACS102-5TA supports 0.2 A RMS continuous load current at an ambient temperature of 100 °C in TO-92 package, verified per IEC61000-4-5 surge testing and thermal derating curves. At lower ambient temperatures, it can sustain up to 0.3 A in full-cycle conduction mode without auxiliary turn-off aids.
Does the ACS102-5TA require external snubber or clamping components?
No. The device integrates a monolithic avalanche clamping structure rated at VCL = 600 V and withstands 2 kV non-repetitive line pulses per IEC61000-4-5. This eliminates external TVS diodes, RC snubbers, or varistors in standard appliance designs meeting IEC335-1 safety requirements.
How is the gate triggered, and what drive circuit is needed?
The ACS102-5TA uses negative-gate triggering: a current of < 5 mA must be sunk from the G pin to COM. A single series resistor (e.g., 1.4 kΩ for 7 V MCU output) between a standard GPIO and G pin suffices-no level shifter, optocoupler, or active driver is required.
Can multiple ACS102-5TA devices share a common heatsink or PCB copper area?
No-the TO-92 package lacks dedicated thermal pads. For shared thermal management, use the SO-8 variant ACS102-5T1, whose COM pins connect directly to a 40 mm² copper area under the package. The ACS102-5TA requires individual lead-frame thermal design or forced-air cooling above 0.15 A RMS.
ACS102-5TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ASD™
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 500 V
- Current - On State (It (RMS)) (Max):
- 200 mA
- Voltage - Gate Trigger (Vgt) (Max):
- 900 mV
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 7.3A, 8A
- Current - Gate Trigger (Igt) (Max):
- 5 mA
- Current - Hold (Ih) (Max):
- 20 mA
- Configuration:
- Single
- Operating Temperature:
- -30°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
ACS102-5TA FAQ
1.How can I place an order for ACS102-5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ACS102-5TA 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 ACS102-5TA reliable?
The price and inventory of ACS102-5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ACS102-5TA is usually 5 days.
3.What payment methods are accepted for ACS102-5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ACS102-5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ACS102-5TA?
ACS102-5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ACS102-5TA 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 ACS102-5TA?
For technical support, including ACS102-5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ACS102-5TA requirements.
6.How does Aetrix verify that ACS102-5TA is sourced from the original manufacturer or authorized distributors?
All ACS102-5TA 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 ACS102-5TA meets industry standards.
7.What is the process for return or replacement of ACS102-5TA?
All ACS102-5TA units undergo pre-shipment inspection (PSI). If there is an issue with ACS102-5TA, 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 ACS102-5TA part is unused and in its original packaging.
Return procedure for ACS102-5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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