My Inquiry
My Account
STMicroelectronics T1235-600G-TR
- Part No.:
- T1235-600G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T1235-600G-TR.pdf
- Description:
- TRIAC ALTERNISTOR 600V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:10,687
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
T1235-600G-TR from STMicroelectronics is a Snubberless™ 3-quadrant triac in D²PAK package, rated for 12 A RMS on-state current and 600 V repetitive peak off-state voltage, with 35 mA maximum gate trigger current (IGT), designed for reliable AC mains switching in inductive load applications such as motor speed control and heating regulation.
For engineers reviewing the T1235-600G-TR datasheet, T1235-600G-TR pinout, T1235-600G-TR application, or T1235-600G-TR equivalent, this part delivers high commutation performance without external snubbers, supports surface-mount assembly via tape-and-reel delivery, and meets UL1557 insulation certification (file E81734) with 2500 VRMS isolated tab.
Technical Context
This triac operates in three quadrants (I, II, III) and features enhanced dV/dt immunity (500 V/µs minimum at 125 °C) and critical rate of decrease of main current (dl/dt)c ≥ 6.5 A/ms at 0.1 V/µs, enabling robust turn-off under inductive stress. Its insulated D²PAK package provides 2500 VRMS isolation between tab and die.
It uses internal ceramic insulation to achieve reinforced isolation per UL1557, with junction-to-case thermal resistance of 1.4 °C/W and maximum operating junction temperature of +125 °C. Gate threshold voltage (VGT) is guaranteed ≤1.3 V, and holding current (IH) is ≤35 mA at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - Sustains continuous 12 A AC load current at Tc = 105 °C in D²PAK package |
| VDRM / VRRM | 600 V - Blocks up to 600 V peak AC voltage in off-state, suitable for 230 VAC mains |
| IGT (max) | 35 mA - Low gate drive requirement enables direct MCU GPIO triggering without buffer stage |
| dV/dt (min) | 500 V/µs - High noise immunity prevents false triggering in noisy industrial environments |
| Rth(j-c) | 1.4 °C/W - Enables efficient heat transfer to heatsink; supports >10 W power dissipation at ΔT = 14 °C |
| VTM (max) | 1.55 V - Low on-state voltage drop minimizes conduction losses and self-heating at full load |
| Isolation Rating | 2500 VRMS - Reinforced insulation certified to UL1557 (E81734), safe for primary-side AC switching |
Pinout & Package
D²PAK (TO-263) surface-mount package with insulated metal tab; 3-pin configuration (A1, A2, G); tab electrically connected to A2 and rated for 2500 VRMS isolation from PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main Terminal 1 | Reference terminal for gate trigger; connects to load return path in standard phase-control topology |
| A2 | Main Terminal 2 | Connected to insulated metal tab; serves as high-side AC line connection with reinforced isolation |
| G | Gate | Low-energy trigger input (≤35 mA); polarity-sensitive for 3Q operation; requires no snubber for inductive loads |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ operation | Eliminates need for external RC snubber network when driving inductive loads like universal motors or solenoids |
| UL1557-certified insulation | 2500 VRMS isolation enables single-component AC mains interface without additional creepage/clearance barriers |
| High commutation capability | (dl/dt)c ≥ 6.5 A/ms ensures reliable turn-off during zero-crossing interruption of inductive current |
| Surface-mount D²PAK | Enables automated assembly and higher power density vs. through-hole TO-220AB; compatible with FR4 PCBs (35 µm Cu) |
| RoHS-compliant ECOPACK2® | Lead-free terminations and halogen-free molding compound meet EU Directive 2011/65/EU |
Applications
| Motor Speed Control | Heating Regulation |
|---|---|
|
Use Scenario: Variable-speed control of universal motors in power tools and vacuum cleaners using phase-angle firing. IC Role / Device Role / Timing Role: Main AC power switch triggered by microcontroller-generated gate pulses synchronized to AC zero-crossing. Use Value: Eliminates snubber components and reduces BOM count while maintaining stable commutation across motor load variations. |
Use Scenario: Proportional power delivery to resistive heating elements in industrial ovens and coffee makers. IC Role / Device Role / Timing Role: Bidirectional AC switch implementing burst-fire or phase-control dimming to regulate average power. Use Value: 600 V rating and 12 A current capacity support 2.7 kW loads at 230 VAC with margin. |
| Light Dimmer (LED-Compatible) | Static Relay Replacement |
|
Use Scenario: Leading-edge dimmer circuits driving LED drivers with low-holding-current requirements. IC Role / Device Role / Timing Role: Logic-level-compatible triac (35 mA IGT) interfaced directly to optocoupler output for isolated gate drive. Use Value: Higher IGT than logic-level variants (e.g., T1210) allows compatibility with legacy driver ICs while retaining snubberless reliability. |
Use Scenario: Solid-state replacement for electromechanical relays in PLC output modules and HVAC controllers. IC Role / Device Role / Timing Role: Fail-safe AC switching element with galvanic isolation and surge immunity (120 A non-repetitive ITSM). Use Value: 2500 VRMS isolation and UL certification reduce system-level safety certification effort versus discrete solutions. |
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 |
|---|---|---|---|
| T1250-600G-TR | 50 mA IGT (vs. 35 mA), same 12 A/600 V rating and D²PAK package | Suitable where gate drive strength exceeds 35 mA, e.g., with high-impedance optocouplers or long PCB traces | Select when higher gate trigger margin is required without changing layout or thermal design |
| BTA12-600CW | TO-220AB insulated package, same 35 mA IGT and 600 V rating, but through-hole mounting | Preferred for prototyping, low-volume production, or designs requiring manual heatsink attachment | Choose for ease of thermal testing or when D²PAK reflow profile is unavailable |
Compared with T1250-600G-TR, the T1235-600G-TR offers lower gate drive demand for tighter MCU integration; versus BTA12-600CW, it enables higher-density SMT assembly while retaining identical isolation and commutation specs.
Availability
T1235-600G-TR is available at Aetrix Electronics and suitable for motor speed control, heating regulation, LED-compatible light dimmers, and static relay replacement requiring stable component supply and RoHS-compliant surface-mount packaging.
Supply support for T1235-600G-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, mixed-signal, power, and microcontroller products for industrial, automotive, and consumer markets.
The T12xx series belongs to ST's Snubberless™ triac product line, engineered specifically for robust, snubber-free AC switching in inductive and capacitive load environments with emphasis on safety certification and thermal efficiency.
FAQ
What is the maximum junction temperature and thermal resistance of T1235-600G-TR?
The device has a maximum operating junction temperature of +125 °C and a junction-to-case thermal resistance (Rth(j-c)) of 1.4 °C/W. This allows sustained 12 A RMS conduction with ≤14 °C temperature rise across the case interface when properly heatsinked, supporting continuous operation in enclosed industrial enclosures.
Does T1235-600G-TR require an external snubber circuit?
No - T1235-600G-TR is a Snubberless™ triac with guaranteed commutation performance (dl/dt)c ≥ 6.5 A/ms and dV/dt immunity of 500 V/µs at 125 °C, eliminating the need for external RC snubbers when driving typical inductive loads like universal motors or transformer-coupled heaters.
How is the insulated tab rated and certified?
The D²PAK metal tab is internally insulated using ceramic material and rated for 2500 VRMS isolation between A2/tab and the die. It is UL1557 certified (file E81734), meeting reinforced insulation requirements for primary-side AC mains switching without additional barrier materials or spacing.
Can T1235-600G-TR be driven directly by a microcontroller GPIO?
Yes - with a maximum gate trigger current (IGT) of 35 mA and gate threshold voltage (VGT) ≤1.3 V, the device can be driven directly by most 3.3 V or 5 V MCU GPIO pins when paired with a series current-limiting resistor (e.g., 100 Ω for 3.3 V, 150 Ω for 5 V), provided the MCU can source ≥35 mA peak.
T1235-600G-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Snubberless™
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Triac Type:
- Alternistor - Snubberless
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 12 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 120A, 126A
- 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:
- Surface Mount
- Supplier Device Package:
- D2PAK
T1235-600G-TR FAQ
1.How can I place an order for T1235-600G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T1235-600G-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 T1235-600G-TR reliable?
The price and inventory of T1235-600G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1235-600G-TR is usually 5 days.
3.What payment methods are accepted for T1235-600G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1235-600G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1235-600G-TR?
T1235-600G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1235-600G-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 T1235-600G-TR?
For technical support, including T1235-600G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1235-600G-TR requirements.
6.How does Aetrix verify that T1235-600G-TR is sourced from the original manufacturer or authorized distributors?
All T1235-600G-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 T1235-600G-TR meets industry standards.
7.What is the process for return or replacement of T1235-600G-TR?
All T1235-600G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1235-600G-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 T1235-600G-TR part is unused and in its original packaging.
Return procedure for T1235-600G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T1235-600G-TR Tags
-
Z0103NN5AA4
STMicroelectronics
-
Z0107MNT1G
Littelfuse Inc.
-
Z0103MNT1G
Littelfuse Inc.
;;2.jpg)
-
T405-800B-TR
STMicroelectronics
-
T835-600B-TR
STMicroelectronics
.JPG)
-
2N6073BG
Littelfuse Inc.
-
2N6075BG
Littelfuse Inc.
-
BTA08-600CWRG
STMicroelectronics
-
T835H-6G-TR
STMicroelectronics
-
BTA16-800BRG
STMicroelectronics
-
T1210-800G-TR
STMicroelectronics
-
MAC4DHMT4G
Littelfuse Inc.
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
