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STMicroelectronics T1610T-8T
- Part No.:
- T1610T-8T
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
T1610T-8T.pdf
- Description:
- TRIAC SENS GATE 800V 16A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:981
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Product details
Overview
T1610T-8T from STMicroelectronics is a logic-level, 16 A RMS, 800 V repetitive peak blocking voltage triac in TO-220AB package, designed for AC line switching and phase-angle control. It features three-quadrant operation, 10 mA gate trigger current (IGT), 1.55 V on-state voltage (VT) at 22.6 A, and ECOPACK2 compliance. Used in motor control circuits and small home appliances where microcontroller direct drive is required.
For engineers reviewing the T1610T-8T datasheet, T1610T-8T pinout, T1610T-8T application, or T1610T-8T equivalent, key selection criteria include gate sensitivity (10 mA IGT), dV/dt immunity (250 V/µs min at 125 °C), thermal resistance (1.1 °C/W j-c), and 3-quadrant triggering capability for reduced EMI in phase-control designs.
Technical Context
This triac operates across all four quadrants but is optimized for three-quadrant (I, II, III) triggering to suppress false turn-on during high dV/dt transients. Its low 10 mA IGT enables direct interfacing with 3.3 V or 5 V microcontrollers without external gate drivers.
With 900 V non-repetitive surge rating (VRSM), 120 A non-repetitive surge current (ITSM at 50 Hz), and 21.6 A/ms critical di/dt at 125 °C, it supports robust overvoltage crowbar protection and inrush current limiting in 230 V AC systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 16 A - Sustained AC load current handling at Tc = 129 °C, suitable for 2.5 kW resistive loads at 230 V AC. |
| VDRM / VRRM | 800 V - Repetitive peak off-state voltage at Tj = 125 °C, enabling use in 230 V mains with 2× safety margin. |
| IGT | 10 mA max - Gate trigger current threshold, allowing direct drive from MCU GPIO pins without buffer stages. |
| VT | 1.55 V max at ITM = 22.6 A - Low conduction loss reduces thermal stress and improves efficiency in continuous switching. |
| dV/dt | 250 V/µs min at Tj = 125 °C - High static dv/dt immunity prevents spurious turn-on in noisy industrial environments. |
| Rth(j-c) | 1.1 °C/W - Junction-to-case thermal resistance enables effective heatsinking for high-duty-cycle applications. |
| I²t | 95 A²s - Fusing I²t value defines short-circuit withstand capability for coordination with fast-acting fuses. |
Pinout & Package
TO-220AB package: insulated metal tab, through-hole mounting, lead-free plating, halogen-free epoxy (UL94 V0), recommended torque 0.4–0.6 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; polarity determines quadrant operation (A2 referenced to A1). |
| A2 (MT2) | Main Terminal 2 | High-side main current path; voltage polarity relative to A1 defines triggering quadrant (I, II, III). |
| G | Gate | Low-current control input; triggers conduction when ≥10 mA pulse applied with appropriate A2–A1 polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Three-quadrant triggering | Enables stable turn-on only in quadrants I, II, and III-reducing false triggering from dV/dt noise in phase-control dimmers. |
| Logic-level gate drive | 10 mA IGT allows direct interface with standard microcontroller outputs, eliminating gate driver ICs and reducing BOM count. |
| ECOPACK2 compliance | Halogen-free, lead-free TO-220AB package meets RoHS and REACH requirements for global industrial and consumer markets. |
| High dV/dt immunity | 250 V/µs minimum at 125 °C ensures reliable blocking during fast transients in motor commutation or relay snubbing circuits. |
Applications
| Motor Control Circuits | Small Home Appliances |
|---|---|
Use Scenario: Speed and direction control of universal motors in vacuum cleaners and power tools using phase-angle modulation. IC Role / Device Role / Timing Role: Main AC power switch implementing variable conduction angle under MCU PWM timing control. Use Value: 10 mA IGT enables precise zero-crossing synchronized firing without gate amplification, improving speed resolution and EMI profile. |
Use Scenario: On/off and dimming control of heating elements and incandescent lamps in coffee makers and irons. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered by microcontroller-generated gate pulses aligned to AC zero-crossing. Use Value: 800 V VDRM provides margin against line surges in unregulated 230 V AC environments, extending product lifetime. |
| Inrush Current Limiting Circuits | Overvoltage Crowbar Protection |
Use Scenario: Soft-start for transformer-based power supplies by delaying conduction angle during initial AC half-cycles. IC Role / Device Role / Timing Role: Controlled turn-on device limiting peak inrush current via programmable phase delay. Use Value: 120 A ITSM (50 Hz, 20 ms) withstands brief inrush peaks while 1.1 °C/W Rth(j-c) supports thermal recovery between cycles. |
Use Scenario: Fast-acting crowbar across DC bus or AC line to clamp overvoltage events in UPS or industrial SMPS. IC Role / Device Role / Timing Role: Voltage-triggered latch that conducts fully upon overvoltage detection via external sensing circuit. Use Value: 900 V VRSM rating ensures safe clamping of transient spikes up to 900 V without breakdown or degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BT139-800 | 16 A IT(RMS), 800 V VDRM, but 35 mA IGT - requires gate driver stage for MCU compatibility. | Lacks three-quadrant optimization; higher dV/dt susceptibility increases risk of false turn-on in noisy motor drives. | Choose only if gate drive circuitry already exists and cost is prioritized over design simplicity. |
| MAC16A8G | 16 A IT(RMS), 800 V VDRM, 15 mA IGT, TO-220AB, but rated only for two-quadrant (I+III) operation. | No QII support limits flexibility in phase-control topologies requiring symmetrical firing across both half-cycles. | Select when QII operation is unnecessary and legacy footprint compatibility is critical. |
Compared with BT139-800 and MAC16A8G, the T1610T-8T uniquely combines 10 mA IGT, three-quadrant triggering, and 250 V/µs dV/dt immunity-enabling simpler, more robust AC control in space-constrained embedded systems without gate buffers or snubber tuning.
Availability
T1610T-8T is available at Aetrix Electronics and suitable for motor control circuits, small home appliances, and inrush current limiting circuits requiring stable component supply and long-term industrial availability.
Supply support for T1610T-8T 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 discrete devices, microcontrollers, and analog ICs for industrial, automotive, and consumer applications.
The T1610T-8T belongs to ST's high-reliability logic-level triac family, engineered specifically for microcontroller-driven AC power control in cost-sensitive, thermally constrained embedded systems.
FAQ
What is the maximum junction temperature for continuous operation?
The T1610T-8T has an operating junction temperature range of –40 °C to +150 °C. For continuous 16 A RMS conduction, case temperature must be maintained ≤129 °C per absolute maximum ratings, requiring heatsinking with thermal resistance ≤1.1 °C/W to ambient or lower depending on airflow and enclosure design.
Can this triac be used in zero-crossing switched applications?
Yes - its 10 mA IGT and three-quadrant behavior allow reliable zero-crossing triggering. However, zero-crossing operation requires external timing circuitry or MCU firmware to synchronize gate pulses precisely at voltage zero crossings to minimize EMI and inrush.
Is a snubber circuit required for inductive loads?
A snubber (RC network) is recommended for inductive loads like motors or transformers to suppress voltage overshoot during turn-off. The T1610T-8T's 900 V VRSM provides margin, but dV/dt during commutation can exceed 250 V/µs without snubbing, risking false turn-on.
Does the TO-220AB package have an electrically isolated tab?
No - the TO-220AB package has a conductive metal tab connected internally to A2 (MT2). Electrical isolation requires insulating hardware (e.g., shoulder washers, mica pads) and isolated mounting screws when A2 is not at chassis ground potential.
T1610T-8T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 16 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 120A, 126A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 15 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
T1610T-8T FAQ
1.How can I place an order for T1610T-8T through Aetrix?
Please submit a Request for Quotation (RFQ) for T1610T-8T 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 T1610T-8T reliable?
The price and inventory of T1610T-8T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1610T-8T is usually 5 days.
3.What payment methods are accepted for T1610T-8T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1610T-8T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1610T-8T?
T1610T-8T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1610T-8T 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 T1610T-8T?
For technical support, including T1610T-8T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1610T-8T requirements.
6.How does Aetrix verify that T1610T-8T is sourced from the original manufacturer or authorized distributors?
All T1610T-8T 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 T1610T-8T meets industry standards.
7.What is the process for return or replacement of T1610T-8T?
All T1610T-8T units undergo pre-shipment inspection (PSI). If there is an issue with T1610T-8T, 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 T1610T-8T part is unused and in its original packaging.
Return procedure for T1610T-8T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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