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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T830-8FP

Name: T830-8FP
Brand: STMicroelectronics
SKU: T830-8FP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T830-8FP

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-220-3 Full Pack

Datasheet:: T830-8FP.pdf

Description:: TRIAC ALTRNSTR 800V 8A TO220FPAB

Quantity:: RFQ Add To RFQ list

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Inventory:47

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Product details

Overview

T830-8FP from STMicroelectronics is a snubberless 8 A, 800 V RMS triac in TO-220FPAB package, designed for AC mains switching with high commutation robustness and 1500 V_rms isolation. It delivers 80 A non-repetitive surge current, supports 100 A/µs dI/dt, and operates up to 125 °C junction temperature-used in power tool motor control and home appliance AC load switching.

For engineers reviewing the T830-8FP datasheet, T830-8FP pinout, T830-8FP application, or T830-8FP equivalent, key selection criteria include commutation capability (dV/dt ≥ 2500 V/µs at 125 °C), gate trigger sensitivity (IGT ≤ 30 mA), thermal resistance (R_th(j-c) = 3.5 °C/W), and UL E81734 certification for safety-critical AC switching.

Technical Context

The T830-8FP is a three-quadrant snubberless triac optimized for direct AC line switching without external snubbers. Its high dV/dt immunity (≥2500 V/µs) and critical dI/dt rating (≥10.0 A/ms without snubber) enable reliable turn-off under inductive loads like universal motors.

It features symmetrical gate triggering across quadrants I, II, and III, with guaranteed IGT ≤ 30 mA at 12 V and 30 Ω load, and maintains latching current ≤ 60 mA and holding current ≤ 50 mA across –40 to +125 °C operating range.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(rms)	8 A - continuous RMS on-state current at 95 °C case temperature, suitable for sustained AC load control
VDRM / VRRM	800 V - peak repetitive off-state voltage, enabling use on 230 VAC mains with margin
ITSM (50 Hz)	80 A - non-repetitive surge current for motor startup or lamp inrush handling
dI/dt (critical)	100 A/µs - ensures reliable turn-on under fast-rising current, e.g., capacitive or rectifier-fed loads
dV/dt (min)	2500 V/µs - prevents false triggering during voltage transients in noisy industrial environments
Rth(j-c)	3.5 °C/W - enables efficient heatsinking for compact designs with limited airflow
Vins (1 min)	1500 V_rms - reinforced insulation meets basic safety requirements for Class I appliances

Pinout & Package

Package: TO-220FPAB - insulated plastic package with metal tab, UL94 V0 epoxy, 0.4–0.6 N·m mounting torque, and 2.0 g unit weight. Designed for PCB through-hole mounting with heatsink interface via tab.

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate trigger; connected to neutral or low-side AC path in standard configurations
A2 (MT2)	Main Terminal 2	High-side AC line connection; carries full load current and defines polarity reference for gate drive
G	Gate	Three-quadrant trigger input; requires ≤30 mA pulse to initiate conduction in any quadrant except Q4

Key Features

Feature	Design Value
Snubberless operation	Eliminates need for external RC snubber networks in resistive and moderate inductive loads, reducing BOM count and board space
High commutation robustness	Guaranteed dV/dt ≥ 2500 V/µs and (dI/dt)_c ≥ 10.0 A/ms without snubber, enabling reliable turn-off in motor control
UL-certified insulation	1500 V_rms isolation per UL file E81734, supporting safety-compliant design in household and portable appliances
ECOPACK®2 compliance	Meets RoHS 2002/95/EC and halogen-free requirements, with documented material declarations for supply chain traceability

Applications

Power Tool Motor Control

Induction Cooktop Power Switching

Use Scenario: Variable-speed universal motor control in corded drills and sanders using phase-angle or burst-fire AC switching.

IC Role / Device Role / Timing Role: Main AC power switch; triggered by zero-crossing synchronized gate pulses to regulate average power.

Use Value: Snubberless architecture reduces component count and improves reliability during high-dI/dt motor commutation events.

Use Scenario: High-frequency AC power delivery to induction coils in domestic cooktops with rapid on/off cycling.

IC Role / Device Role / Timing Role: Primary AC line switch; handles 20–50 kHz burst-mode operation with precise duty-cycle control.

Use Value: 800 V blocking voltage and 80 A surge rating accommodate coil inrush and transient overvoltages during thermal cycling.

Washing Machine Drum Drive

LED Dimmable Ballast Control

Use Scenario: Bidirectional AC switching for reversible capacitor-start induction motors in washing machine drum drives.

IC Role / Device Role / Timing Role: Full-wave AC switch controlled by microcontroller-generated gate pulses to reverse motor direction.

Use Value: Three-quadrant triggering enables reliable conduction in both polarities without external polarity management circuitry.

Use Scenario: Leading-edge dimming interface between TRIAC-based wall dimmers and constant-current LED drivers.

IC Role / Device Role / Timing Role: Isolated AC mains interface device; synchronizes dimmer phase-cut waveform to driver enable signal.

Use Value: 30 mA max IGT ensures compatibility with legacy leading-edge dimmers while maintaining stable hold/latch behavior.

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
BT139-800	Same 8 A/800 V rating but lower dV/dt (1000 V/µs typ.) and no UL certification	Lacks reinforced insulation; unsuitable for Class I appliances requiring 1500 V_rms isolation	Select when cost is primary and safety certification is not required
MAC8Q8Y	Higher I_TSM (100 A) but larger TO-247 package and higher I_GT (50 mA)	Better surge handling but requires more PCB area and higher gate drive energy	Select for heavy-duty motor startups where 80 A surge is insufficient

Compared with BT139-800 and MAC8Q8Y, the T830-8FP uniquely balances UL-certified isolation, snubberless operation, and compact TO-220FPAB packaging-making it optimal for space-constrained, safety-regulated consumer AC controls where gate drive efficiency and thermal performance are critical.

Availability

T830-8FP is available at Aetrix Electronics and suitable for power tool motor control, home appliance AC switching, and lighting dimming applications requiring stable component supply and long-term lifecycle support.

Supply support for T830-8FP 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, delivering automotive, industrial, and power discrete solutions with vertical manufacturing and broad IP portfolio.

The T830-8FP belongs to ST's Snubberless™ Triac family, engineered specifically for robust, simplified AC mains switching in cost-sensitive, safety-certified consumer and portable equipment.

FAQ

What is the maximum junction temperature for continuous operation?

The T830-8FP has an operating junction temperature range of –40 to +125 °C. Continuous operation at 125 °C requires thermal design ensuring R_th(j-c) ≤ 3.5 °C/W and case temperature ≤ 95 °C, per absolute ratings table. Derating applies above 95 °C case temperature.

Does T830-8FP require a heat sink in typical 8 A applications?

Yes-under full 8 A RMS load at 95 °C case temperature, a heat sink is mandatory. With R_th(j-c) = 3.5 °C/W and ambient > 50 °C, junction temperature exceeds 125 °C without heatsinking. Typical designs use aluminum extrusions or stamped fin heatsinks rated ≤ 5 °C/W total thermal resistance.

Can T830-8FP replace standard triacs in existing phase-control circuits?

Yes, provided gate drive meets I_GT ≤ 30 mA and circuit dV/dt stress remains below 2500 V/µs. Its snubberless design allows removal of external RC networks if original triac used them for commutation-reducing component count and improving reliability.

Is T830-8FP compliant with RoHS and REACH regulations?

Yes-T830-8FP is RoHS 2002/95/EC compliant and ECOPACK®2 certified, confirming halogen-free materials and full REACH SVHC disclosure. The TO-220FPAB package uses UL94 V0 epoxy and lead-free terminations meeting JEDEC J-STD-020 moisture sensitivity level 1.

T830-8FP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Snubberless™

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

Packaging:: Tube

Product Status:: Obsolete

Triac Type:: Alternistor - Snubberless

Voltage - Off State:: 800 V

Current - On State (It (RMS)) (Max):: 8 A

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

Current - Non Rep. Surge 50, 60Hz (Itsm):: 80A, 84A

Current - Gate Trigger (Igt) (Max):: 30 mA

Current - Hold (Ih) (Max):: 50 mA

Configuration:: Single

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220FPAB

T830-8FP FAQ

1.How can I place an order for T830-8FP through Aetrix?

Please submit a Request for Quotation (RFQ) for T830-8FP 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 T830-8FP reliable?

The price and inventory of T830-8FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T830-8FP is usually 5 days.

3.What payment methods are accepted for T830-8FP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T830-8FP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T830-8FP?

T830-8FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T830-8FP 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 T830-8FP?

For technical support, including T830-8FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T830-8FP requirements.

6.How does Aetrix verify that T830-8FP is sourced from the original manufacturer or authorized distributors?

All T830-8FP 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 T830-8FP meets industry standards.

7.What is the process for return or replacement of T830-8FP?

All T830-8FP units undergo pre-shipment inspection (PSI). If there is an issue with T830-8FP, 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 T830-8FP part is unused and in its original packaging.

Return procedure for T830-8FP:

1.Submit a request within 90 days.

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

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