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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T610T-8FP

Name: T610T-8FP
Brand: STMicroelectronics
SKU: T610T-8FP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T610T-8FP

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-220-3 Full Pack

Datasheet:: T610T-8FP.pdf

Description:: TRIAC SENS GATE 800V TO-220FPAB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

T610T-8FP from STMicroelectronics is a 6 A logic-level triac in insulated TO-220FPAB package, designed for AC line switching and phase-angle control. It features 800 V repetitive peak off-state voltage (V_DRM/V_RRM), 10 mA gate trigger current (I_GT), and 2000 V_RMS insulation rating-enabling direct microcontroller drive and safe isolation in motor control and lighting circuits.

For engineers reviewing the T610T-8FP datasheet, T610T-8FP pinout, T610T-8FP application, or T610T-8FP equivalent, key selection criteria include dV/dt immunity (≥170 V/µs at T_j = 150 °C), dI/dt capability (100 A/µs), I²t rating (13 A²s), thermal resistance (R_th(j-c) = 4.5 °C/W), and UL-certified insulation compliance.

Technical Context

The T610T-8FP is a three-quadrant logic-level triac optimized for high-reliability AC switching in thermally constrained environments. Its high dV/dt (250 V/µs min. at 125 °C) and high dI/dt (100 A/µs) characteristics support robust commutation in inductive loads like universal motors and solenoids.

It operates across full junction temperature range (–40 to +150 °C), with gate sensitivity stable over temperature (I_GT ≤ 10 mA up to 150 °C) and low on-state voltage (V_T ≤ 1.55 V at 8.5 A, 25 °C), enabling efficient power delivery without external gate amplification.

Key Specifications

Parameter	Value and Actual Design Meaning
I_T(rms)	6 A - Sustained AC load current at T_c = 117 °C, suitable for continuous motor or heater control
V_DRM/V_RRM	800 V - Repetitive blocking voltage at 125 °C, supports 230 VAC mains with ≥2× safety margin
I_GT	10 mA - Maximum gate trigger current required, enabling direct drive from MCU GPIOs
dV/dt (min)	170 V/µs at 150 °C - Immunity to false triggering during fast transients in noisy industrial environments
R_th(j-c)	4.5 °C/W - Junction-to-case thermal resistance enables compact heatsinking for 6 A conduction
V_ins	2000 V_RMS, 1 min - UL-certified reinforced insulation for safety-critical AC interface isolation
I²t	13 A²s - Fusing energy rating defines short-circuit withstand time under surge conditions

Pinout & Package

Package: TO-220FPAB - insulated through-hole package with electrically isolated tab (2000 V_RMS), lead-free, UL94 V0 epoxy, and recommended mounting torque of 0.4–0.6 N·m.

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate triggering; polarity-sensitive in Quadrants I/II/III operation
A2 (MT2)	Main Terminal 2	Current return path; voltage polarity relative to A1 determines triggering quadrant
G	Gate	Low-current control input (≤10 mA); triggers conduction when referenced to A1 in QI, QII, or QIII

Key Features

Feature	Design Value
Three-quadrant triggering	Enables gate control in Quadrants I, II, and III only-reduces false turn-on risk vs. four-quadrant triacs in noisy AC environments
High dI/dt capability	100 A/µs critical rate-of-rise supports reliable turn-on into highly inductive loads (e.g., transformer primaries, relay coils)
High dV/dt immunity	250 V/µs minimum at 125 °C prevents spurious conduction during line transients or zero-crossing noise
UL-certified insulation	2000 V_RMS isolation meets basic insulation requirements for Class I appliances per UL 60730-1
ECOPACK®2 compliance	Lead-free, RoHS-compliant construction with halogen-free epoxy meeting environmental and regulatory mandates

Applications

Motor Control Circuits

Small Home Appliances

Use Scenario: Speed and direction control of universal motors in vacuum cleaners and power tools.

IC Role / Device Role / Timing Role: Main AC power switch implementing phase-angle control via zero-crossing synchronized gate pulses.

Use Value: 10 mA gate drive allows direct MCU control; 100 A/µs dI/dt ensures clean turn-on despite motor back-EMF spikes.

Use Scenario: On/off and dimming control in countertop blenders, coffee makers, and food processors.

IC Role / Device Role / Timing Role: Logic-level AC load switch triggered by microcontroller PWM or digital output.

Use Value: 2000 V_RMS insulation isolates user-accessible parts from mains; TO-220FPAB enables PCB-mount safety spacing.

Lighting Control

Inrush Current Limiting

Use Scenario: Dimmable LED driver pre-regulator or incandescent lamp phase-control dimmer.

IC Role / Device Role / Timing Role: High-voltage AC switch modulating RMS voltage delivered to load using leading-edge phase-cut.

Use Value: 800 V V_DRM supports 230 VAC + line surges; low I_GT reduces gate driver complexity and power loss.

Use Scenario: Soft-start circuit limiting inrush into transformer-based power supplies or capacitor-input rectifiers.

IC Role / Device Role / Timing Role: Delayed-turn-on AC switch bypassing NTC thermistor after warm-up, controlled by timing circuit.

Use Value: 13 A²s I²t rating defines maximum allowable fault duration before fuse action; 6 A rating sustains steady-state load current.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTB16-600SL	16 A I_T(rms), same 600 V V_DRM, non-insulated TO-220AB package, higher I_GT (35 mA)	Requires external isolation for safety-critical designs; better suited for higher-current resistive loads	Select when higher current headroom is needed and board-level isolation is implemented separately
MAC12A8G	12 A I_T(rms), 800 V V_DRM, TO-220 package, 50 mA I_GT, no certified insulation	Lacks UL-rated insulation; unsuitable for user-accessible AC interfaces without additional barrier design	Choose only for cost-sensitive, non-safety-critical internal switching where isolation is handled elsewhere

Compared with BTB16-600SL and MAC12A8G, the T610T-8FP uniquely combines logic-level gate drive, certified 2000 V_RMS insulation, and 6 A rating in a single package-making it optimal for space-constrained, safety-compliant AC control where MCU integration and regulatory certification are mandatory.

Availability

T610T-8FP is available at Aetrix Electronics and suitable for motor control circuits, small home appliances, and lighting requiring stable component supply with full production status since February 2015.

Supply support for T610T-8FP 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 industrial, automotive, and consumer markets.

The T610T-8FP belongs to ST's high-performance triac product line, engineered specifically for reliable, insulated AC switching in safety-critical, thermally demanding applications such as white goods and industrial controls.

FAQ

Is the T610T-8FP compatible with zero-crossing detection circuits?

Yes. The T610T-8FP supports precise phase-angle control when paired with zero-crossing detection, thanks to its consistent 10 mA gate trigger current and stable dV/dt immunity (≥170 V/µs at 150 °C). Its three-quadrant operation avoids false triggering during voltage transitions near zero-crossing points, making it well-suited for dimmers and soft-start controllers.

What is the maximum case temperature for continuous 6 A operation?

The T610T-8FP supports 6 A I_T(rms) at T_c = 117 °C, as specified in Table 2. This requires a heatsink capable of maintaining the case temperature at or below 117 °C under worst-case ambient and airflow conditions. Derating is necessary above this temperature-e.g., 4.5 A at 125 °C case temperature per Figure 2.

Does the TO-220FPAB package require electrical isolation from the heatsink?

No-the TO-220FPAB package features an electrically insulated tab rated for 2000 V_RMS. The metal tab can be directly mounted to a grounded or floating heatsink without additional insulating hardware, simplifying mechanical design while maintaining safety isolation between mains and chassis ground.

Can the T610T-8FP replace a standard 400 V triac in 230 VAC applications?

Yes, but only if the system design accounts for its 800 V V_DRM/V_RRM rating and insulated package. While over-spec'd for basic 230 VAC use, its higher voltage rating improves surge margin against line transients, and its logic-level gate eliminates need for driver stages-offering improved reliability and reduced BOM count versus legacy 400 V devices.

T610T-8FP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Obsolete

Triac Type:: Logic - Sensitive Gate

Voltage - Off State:: 800 V

Current - On State (It (RMS)) (Max):: 6 A

Voltage - Gate Trigger (Vgt) (Max):: 1.3 V

Current - Non Rep. Surge 50, 60Hz (Itsm):: 45A, 47A

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-220FPAB

T610T-8FP FAQ

1.How can I place an order for T610T-8FP through Aetrix?

Please submit a Request for Quotation (RFQ) for T610T-8FP 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 T610T-8FP reliable?

The price and inventory of T610T-8FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T610T-8FP is usually 5 days.

3.What payment methods are accepted for T610T-8FP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T610T-8FP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T610T-8FP?

T610T-8FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T610T-8FP 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 T610T-8FP?

For technical support, including T610T-8FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T610T-8FP requirements.

6.How does Aetrix verify that T610T-8FP is sourced from the original manufacturer or authorized distributors?

All T610T-8FP 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 T610T-8FP meets industry standards.

7.What is the process for return or replacement of T610T-8FP?

All T610T-8FP units undergo pre-shipment inspection (PSI). If there is an issue with T610T-8FP, 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 T610T-8FP part is unused and in its original packaging.

Return procedure for T610T-8FP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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