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STMicroelectronics T835-600H
- Part No.:
- T835-600H
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Datasheet:
-
T835-600H.pdf
- Description:
- TRIAC ALTERNISTOR 600V 8A TO251
- Quantity:
- Payment:
- Shipping:
Inventory:7,757
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Product details
Overview
T835-600H from STMicroelectronics is a snubberless 8 A, 600 V triac in IPAK package, designed for AC phase control and switching in inductive loads. It features 35 mA maximum gate trigger current (IGT), 400 V/µs critical dV/dt at 125 °C, and 50 A/µs critical di/dt - enabling robust commutation without external snubbers in motor speed controllers and heating regulation circuits.
For engineers reviewing the T835-600H datasheet, T835-600H pinout, T835-600H application, or T835-600H equivalent, key selection criteria include snubberless operation on inductive loads, logic-compatible gate drive (35 mA IGT), IPAK thermal performance (Rth(j-c) = 1.6 °C/W), and compliance with UL-rated insulation requirements for industrial AC control.
Technical Context
This triac operates in three quadrants (I, II, III) and is optimized for snubberless commutation on inductive loads, achieving 400 V/µs dV/dt immunity and 5.4 A/ms (dV/dt)c = 0.1 V/µs critical di/dt at 125 °C. Its internal structure eliminates need for external RC snubbers in motor starting and phase-control applications.
It delivers 1.55 V max on-state voltage (VTM) at 11 A and 25 °C, with dynamic resistance of 50 mΩ at 125 °C, ensuring low conduction loss. Thermal resistance junction-to-case is 1.6 °C/W, supporting 8 A RMS current at 110 °C case temperature per absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A RMS on-state current - supports continuous AC load switching up to 8 A at Tc = 110 °C |
| VDRM / VRRM | 600 V repetitive peak off-state voltage - rated for 230 VAC mains with safety margin |
| IGT (max) | 35 mA - compatible with microcontroller GPIO or low-power drivers without buffer stage |
| dV/dt (min) | 400 V/µs at 125 °C - enables reliable commutation on inductive loads without snubber |
| (dl/dt)c | 5.4 A/ms at (dV/dt)c = 0.1 V/µs - defines minimum rate of current decay to avoid false turn-on during commutation |
| Rth(j-c) | 1.6 °C/W - allows efficient heat transfer to heatsink in IPAK package for high-power density designs |
| VTM | 1.55 V max at ITM = 11 A - limits conduction loss to ≤17 W at full RMS current |
Pinout & Package
Package: IPAK (TO-251AA), surface-mount, lead-free, halogen-free epoxy, UL94 V0 compliant. Tab is electrically connected to MT2 (A2) terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | AC line input or load return path; referenced to gate for triggering |
| A2 (MT2) | Main Terminal 2 | Connected to tab; serves as common output or heatsink-connected terminal |
| G | Gate | Controls conduction onset; triggers in quadrants I, II, III with ≤35 mA pulse |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless operation | Validated for inductive loads up to 400 V/µs dV/dt without external RC network |
| Logic-level gate drive | 35 mA max IGT enables direct interface with 3.3 V/5 V MCUs without driver IC |
| High commutation robustness | (dl/dt)c ≥ 5.4 A/ms ensures reliable turn-off under fast current decay in motor windings |
| IPAK thermal efficiency | 1.6 °C/W Rth(j-c) supports 8 A RMS in compact SMT footprint with minimal heatsinking |
| UL-certified insulation | Meets UL file E81734 for reinforced insulation when mounted on isolated PCB copper |
Applications
| Motor Speed Control | Heating Regulation |
|---|---|
|
Use Scenario: Variable-speed control of single-phase induction motors in fans, pumps, and compressors. IC Role / Device Role / Timing Role: AC phase-angle controller switching main power path based on zero-crossing synchronized gate pulses. Use Value: Eliminates snubber components and reduces BOM count while maintaining stable commutation across motor load transients. |
Use Scenario: Precise temperature maintenance in resistive heating elements for ovens, soldering stations, and HVAC duct heaters. IC Role / Device Role / Timing Role: Bidirectional AC switch modulating power delivery via leading-edge phase control. Use Value: 8 A RMS rating and 600 V blocking support 1.8 kW @ 230 VAC with thermal margin for intermittent duty cycles. |
| Static Relay Replacement | Light Dimming |
|
Use Scenario: Solid-state replacement of electromechanical relays in PLC output modules and industrial control panels. IC Role / Device Role / Timing Role: High-reliability ON/OFF AC switching with zero-voltage turn-on capability. Use Value: 80 A non-repetitive surge rating (ITSM) handles inrush currents of solenoids and transformers without degradation. |
Use Scenario: Mains-powered residential and commercial dimmers for incandescent and halogen lamps. IC Role / Device Role / Timing Role: Leading-edge phase-cut dimmer switch triggered by microcontroller PWM timing. Use Value: 35 mA IGT ensures compatibility with low-power MCU outputs; snubberless design simplifies EMI filtering. |
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 |
|---|---|---|---|
| T835-600G | D²PAK package, Rth(j-c) = 1.6 °C/W same, but larger footprint and higher thermal mass | Better suited for high-ambient-temperature environments requiring enhanced heatsink coupling | Select when board space permits larger D²PAK and thermal cycling reliability is prioritized over compactness |
| BTA08-600BW | TO-220AB insulated package, 50 mA IGT, 1000 V/µs dV/dt, higher gate drive requirement | Requires gate driver buffer; preferred where mechanical mounting and UL-insulated tab are mandatory | Choose when isolation voltage >2500 VRMS and screw-mount heatsinking are required over SMT assembly |
Compared with T835-600H, T835-600G offers superior heatsink interface stability in high-vibration environments, while BTA08-600BW provides certified galvanic isolation but demands higher gate drive power - making T835-600H optimal for space-constrained, logic-driven, snubberless SMT AC control.
Availability
T835-600H is available at Aetrix Electronics and suitable for motor speed controllers, heating regulation systems, static relay replacements, and light dimmers requiring stable component supply, long-lifecycle availability, and RoHS-compliant SMT packaging.
Supply support for T835-600H 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, analog ICs, and microcontrollers for industrial, automotive, and consumer markets.
The T8 series belongs to ST's high-reliability snubberless triac product line, engineered specifically for robust AC switching in inductive and resistive loads without external protection networks.
FAQ
What is the maximum junction temperature for continuous operation of T835-600H?
The T835-600H has an operating junction temperature range of –40 °C to +125 °C. Continuous operation must maintain Tj ≤ 125 °C, achievable with proper heatsinking given its 1.6 °C/W junction-to-case thermal resistance and 8 A RMS rating at Tc = 110 °C.
Can T835-600H be used with 3.3 V microcontrollers without a gate driver?
Yes - its maximum gate trigger current (IGT) is 35 mA at 25 °C, and typical IGT drops further at elevated temperatures. A 3.3 V MCU GPIO sourcing ≥40 mA peak can directly trigger it; verify actual MCU drive capability and add a 100 Ω series resistor for ESD protection and ringing suppression.
Is external snubbing required for inductive loads like motors?
No - T835-600H is a snubberless triac with validated commutation performance: 400 V/µs dV/dt immunity and 5.4 A/ms critical di/dt at 125 °C. It reliably commutates single-phase induction motors without external RC snubbers, reducing BOM cost and board area.
What is the meaning of "H" in the part number T835-600H?
The "H" suffix denotes the IPAK (TO-251AA) surface-mount package. Per ST's ordering scheme, "H" = IPAK, "B" = DPAK, "G" = D²PAK. This distinguishes mechanical form factor, thermal profile, and mounting method - all other electrical specs remain identical within the T835-600x family.
T835-600H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Snubberless™
- Package/Case:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Alternistor - Snubberless
- Voltage - Off State:
- 600 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):
- 35 mA
- Current - Hold (Ih) (Max):
- 35 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-251 (IPAK)
T835-600H FAQ
1.How can I place an order for T835-600H through Aetrix?
Please submit a Request for Quotation (RFQ) for T835-600H 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 T835-600H reliable?
The price and inventory of T835-600H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T835-600H is usually 5 days.
3.What payment methods are accepted for T835-600H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T835-600H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T835-600H?
T835-600H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T835-600H 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 T835-600H?
For technical support, including T835-600H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T835-600H requirements.
6.How does Aetrix verify that T835-600H is sourced from the original manufacturer or authorized distributors?
All T835-600H 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 T835-600H meets industry standards.
7.What is the process for return or replacement of T835-600H?
All T835-600H units undergo pre-shipment inspection (PSI). If there is an issue with T835-600H, 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 T835-600H part is unused and in its original packaging.
Return procedure for T835-600H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T835-600H Tags
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Z0103NN5AA4
STMicroelectronics
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Z0107MNT1G
Littelfuse Inc.
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Z0103MNT1G
Littelfuse Inc.
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T405-800B-TR
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T835-600B-TR
STMicroelectronics
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2N6073BG
Littelfuse Inc.
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2N6075BG
Littelfuse Inc.
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BTA08-600CWRG
STMicroelectronics
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T835H-6G-TR
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BTA16-800BRG
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T1210-800G-TR
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MAC4DHMT4G
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