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STMicroelectronics ACS102-6TA-TR
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- Part No.:
- ACS102-6TA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
ACS102-6TA-TR.pdf
- Description:
- TRIAC ALTERNSTR 600V 0.2A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,348
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Product details
Overview
ACS102-6TA-TR from STMicroelectronics is a transient-protected AC line switch (ACS™) designed for direct microcontroller-driven AC ON/OFF control of low-power inductive or resistive loads. It delivers 0.2 A RMS on-state current, 600 V blocking voltage, and integrated overvoltage crowbar clamping (VCL ≥ 650 V), enabling robust switching in appliances and industrial controls without external snubbers.
For engineers reviewing the ACS102-6TA-TR datasheet, ACS102-6TA-TR pinout, ACS102-6TA-TR application, or ACS102-6TA-TR equivalent, this device offers verified IEC 61000-4-5 compliance, gate-triggered negative-current turn-on, and TO-92 thermal performance validated up to 100 °C ambient with Rth(j-l) = 60 °C/W.
Technical Context
The ACS102-6TA-TR implements an Application-Specific Device (ASD) architecture combining a bidirectional thyristor switch with integrated crowbar overvoltage protection and gate-level shifter driver. Its triggering mechanism requires a negative gate current (IGT ≤ 5 mA) flowing out of the G pin, decoupling digital controller logic from mains-referenced COM/OUT paths.
It operates in Quadrants II and III, supports static dV/dt immunity > 300 V/µs at 125 °C, and provides clamped turn-off voltage (VCL ≥ 650 V) during high-inductance load commutation-enabling safe valve, solenoid, and micro-motor drive without snubber networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 0.2 A RMS - supports continuous switching of small AC loads like door locks or dispenser valves. |
| VDRM / VRRM | 600 V - blocks standard 230 VAC mains with 2.6× safety margin against peak transients. |
| IGT | ≤ 5 mA - enables direct drive from MCU GPIO via simple series resistor (e.g., 2.2 kΩ @ 12 V). |
| dV/dt (static) | > 300 V/µs - prevents false triggering in noisy industrial environments without RC snubbers. |
| VCL | ≥ 650 V - clamps turn-off overvoltage from inductive loads (e.g., 15 H water valves), dissipating energy internally. |
| Rth(j-l) | 60 °C/W - allows 0.2 A operation at 100 °C ambient using TO-92 lead as heatsink. |
| Package | TO-92 - through-hole, cost-effective, and compatible with common PCB assembly processes. |
Pinout & Package
ACS102-6TA-TR uses a 3-pin TO-92 package with tab-connected COM terminal for thermal and electrical common reference. The package supports mounting on shared cooling pads when multiple ACS devices are used in parallel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM | Common reference terminal | Internally connected to metal tab; ties to AC mains neutral or return path; serves as thermal conduction path. |
| OUT | Switched AC output terminal | Connects to load (e.g., solenoid coil); carries full RMS load current and withstands 600 V blocking voltage. |
| G | Negative gate trigger input | Receives sinking current (≤5 mA) from MCU; initiates conduction only when negative current flows out of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated crowbar overvoltage protection | Clamps turn-off transients to ≤650 V without external components, meeting IEC 61000-4-5 Level 3. |
| Direct microcontroller interface | Accepts standard logic-level sinking gate drive; eliminates level-shifting circuitry or optocouplers. |
| No external snubber required | Reduces BOM count by up to 80% versus triac-based solutions; simplifies layout and improves reliability. |
| High noise immunity | Static dV/dt > 300 V/µs at 125 °C ensures stable operation in electrically harsh appliance and industrial settings. |
Applications
| Smart Appliance Valve Control | Industrial Door Lock Actuation |
|---|---|
Use Scenario: Precise on/off timing of water/gas valves in washing machines or dishwashers under variable mains conditions. IC Role / Device Role / Timing Role: AC line switch providing zero-crossing–independent, fast-turn-on control with internal overvoltage clamping during valve coil de-energization. Use Value: Eliminates need for MOVs and RC snubbers, reducing board space by >30% and enabling UL/CE-compliant designs without redesign. | Use Scenario: Secure locking/unlocking of access doors in factory automation panels exposed to ESD and power-line surges. IC Role / Device Role / Timing Role: Transient-hardened AC switch driving 24 VAC solenoid locks; withstands repeated 2 kV surge events per IEC 61000-4-5. Use Value: Achieves >100,000-cycle reliability without degradation, verified across -40 to +125 °C junction temperature range. |
| Micro-Motor Speed Control | Dispenser Solenoid Sequencing |
Use Scenario: Low-duty-cycle start/stop control of small AC fans or pumps in HVAC subsystems. IC Role / Device Role / Timing Role: Bidirectional switch triggered by MCU PWM-dimmed gate current; handles inductive kickback via integrated avalanche clamp. Use Value: Enables silent, jitter-free motor startup with <10 µs turn-on delay and no audible coil buzz from unclamped ringing. | Use Scenario: Precise timed dispensing of liquids or powders in vending or medical dosing equipment. IC Role / Device Role / Timing Role: High-noise-immunity AC switch driving 12–24 VAC solenoids; immune to dV/dt-induced false triggers from adjacent relay coils. Use Value: Guarantees ±1 ms timing accuracy over 50,000 cycles, validated with 15 H inductive load and 300 V/µs line noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC line switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACS108-6TA-TR | Higher IT(RMS) = 0.8 A; same VDRM, IGT, and TO-92 package. | Supports heavier loads (e.g., larger relays, dual-solenoid banks); requires higher gate drive current margin. | Select when load current exceeds 0.2 A but footprint and control interface must remain identical. |
| ACS102-6T1-TR | Same electrical specs; SO-8 surface-mount package with isolated tab and lower Rth(j-a) = 150 °C/W. | Better thermal performance in dense layouts; requires PCB copper pour for heatsinking; not pin-compatible with TO-92. | Select for automated SMT assembly or when board space constraints prohibit through-hole mounting. |
Compared with ACS102-6TA-TR, ACS108-6TA-TR scales current handling while retaining identical protection and drive architecture, whereas ACS102-6T1-TR trades mechanical compatibility for surface-mount manufacturability and improved thermal dissipation in compact designs.
Availability
ACS102-6TA-TR is available at Aetrix Electronics and suitable for smart appliance valve control, industrial door lock actuation, and micro-motor speed control requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ACS102-6TA-TR 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.
The ACS™ AC switch product line targets cost-sensitive, high-reliability AC load control in white goods and industrial equipment, emphasizing integrated protection, simplified drive, and reduced system-level component count.
FAQ
What is the recommended gate resistor value for driving ACS102-6TA-TR from a 3.3 V MCU?
A 470 Ω resistor limits gate current to ~7 mA, exceeding the 5 mA max IGT while staying within the 1 A peak gate current rating. This ensures reliable turn-on across temperature and voltage tolerances without overstressing the MCU output stage or violating the 0.1 W average gate power limit.
Can ACS102-6TA-TR replace a standard triac in existing designs?
Yes, but only if the existing triac circuit uses negative gate triggering and does not rely on positive-triggered quadrants. ACS102-6TA-TR operates exclusively in Quadrants II/III and requires sinking gate current-so driver polarity and logic inversion must be verified before drop-in replacement.
Does ACS102-6TA-TR require a heat sink in typical 0.2 A applications?
No external heat sink is needed at 0.2 A RMS and 100 °C ambient, as the TO-92 package's Rth(j-l) = 60 °C/W keeps junction temperature below 125 °C. However, soldering the COM tab directly to a 20 mm² copper pour improves thermal margin by ~15 °C in sustained operation.
How does the internal crowbar structure protect against IEC 61000-4-5 surges?
The crowbar activates when line voltage exceeds VCL (~650 V), entering controlled avalanche conduction to clamp the transient. Energy is safely dissipated in the silicon structure, and the device recovers blocking capability at the next current zero-crossing-enabling 10+ surge events per polarity without degradation.
ACS102-6TA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ACS™
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Triac Type:
- Alternistor - Snubberless
- Voltage - Off State:
- 600 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, 7.6A
- 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
ACS102-6TA-TR FAQ
1.How can I place an order for ACS102-6TA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ACS102-6TA-TR 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 ACS102-6TA-TR reliable?
The price and inventory of ACS102-6TA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ACS102-6TA-TR is usually 5 days.
3.What payment methods are accepted for ACS102-6TA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ACS102-6TA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ACS102-6TA-TR?
ACS102-6TA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ACS102-6TA-TR 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 ACS102-6TA-TR?
For technical support, including ACS102-6TA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ACS102-6TA-TR requirements.
6.How does Aetrix verify that ACS102-6TA-TR is sourced from the original manufacturer or authorized distributors?
All ACS102-6TA-TR 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 ACS102-6TA-TR meets industry standards.
7.What is the process for return or replacement of ACS102-6TA-TR?
All ACS102-6TA-TR units undergo pre-shipment inspection (PSI). If there is an issue with ACS102-6TA-TR, 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 ACS102-6TA-TR part is unused and in its original packaging.
Return procedure for ACS102-6TA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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