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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T1635-600G

Name: T1635-600G
Brand: STMicroelectronics
SKU: T1635-600G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T1635-600G

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: T1635-600G.pdf

Description:: TRIAC ALTERNISTOR 600V 16A D2PAK

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Inventory:1,495

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Product details

Overview

T1635-600G from STMicroelectronics is a 16 A, 600 V Snubberless™ triac in D²PAK package, designed for high-commutation AC mains switching in inductive loads. It features 35 mA gate trigger current (IGT), 1000 V/µs critical dV/dt (Tj = 125 °C), and insulated thermal performance with Rth(j-c) = 1.2 °C/W - enabling robust phase-angle control in motor speed controllers without external snubbers.

For engineers reviewing the T1635-600G datasheet, T1635-600G pinout, T1635-600G application, or T1635-600G equivalent, key selection criteria include its 3-quadrant Snubberless™ operation, 2500 VRMS insulated tab compliance (UL E81734), TO-220AB/D²PAK thermal derating curves, and compatibility with zero-crossing or phase-control driver ICs in 50/60 Hz AC systems.

Technical Context

This triac operates in three quadrants (I, II, III) with no gate triggering required in quadrant IV - eliminating false turn-on from noise on inductive loads. Its internal ceramic insulation enables direct heatsink mounting at 2500 VRMS isolation, meeting UL1557 requirements without external barrier materials.

The device sustains 168 A non-repetitive surge current (60 Hz, 16.7 ms) and maintains commutation stability up to 14 A/ms critical di/dt at 125 °C junction temperature - validated under worst-case inductive load conditions without snubber networks.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	16 A RMS on-state current - supports continuous 2.5 kW resistive or 1.8 kW inductive load switching at Tc = 100 °C
VDRM / VRRM	600 V peak blocking voltage - rated for 230 VAC mains with 2× safety margin against line transients
IGT	35 mA max gate trigger current - compatible with standard microcontroller GPIO or low-power optocouplers (e.g., MOC3023)
(dV/dt)_c	1000 V/µs min critical rate-of-rise - prevents spurious turn-on during fast voltage transients on inductive loads
R_th(j-c)	1.2 °C/W junction-to-case thermal resistance - enables 16 A operation with ≤20 °C temperature rise across standard 25 mm² copper heatsink area
I_H	35 mA max holding current - ensures reliable latching after gate pulse removal in phase-control dimmers and motor drives
V_T	1.55 V max on-state voltage at 22.5 A - limits conduction loss to <36 W at full load, reducing thermal stress in compact enclosures

Pinout & Package

D²PAK (TO-263) surface-mount package with isolated metal tab (2500 VRMS rating), 3-pin configuration optimized for high-current PCB routing and thermal transfer via exposed drain pad.

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate drive; connects to load return or neutral side in AC circuits
A2 (MT2)	Main Terminal 2	High-side AC line connection; carries full load current and defines polarity reference for gate triggering
G	Gate	Low-energy trigger input; requires ≥35 mA pulse for reliable turn-on in all operating quadrants except QIV

Key Features

Feature	Design Value
Snubberless™ 3Q operation	Eliminates need for RC snubber networks on inductive loads - reduces BOM count and board space in motor controllers
UL1557 certified insulation	2500 VRMS isolation between tab and terminals - satisfies reinforced insulation requirements for Class I appliances
Low R_th(j-c)	1.2 °C/W thermal resistance - enables higher power density than TO-220AB insulated variants (R_th(j-c) = 2.1 °C/W)
High dV/dt immunity	1000 V/µs minimum - prevents false triggering during zero-crossing distortion in universal motor applications
RoHS-compliant ECOPACK®	Lead-free termination and halogen-free molding compound - meets EU Directive 2002/95/EC without exemptions

Applications

Universal Motor Speed Control

Industrial Static Relay

Use Scenario: Variable-speed control of brushed AC motors in power tools and vacuum cleaners using phase-angle firing.

IC Role / Device Role / Timing Role: Main AC power switch triggered by zero-crossing detector and PWM-controlled gate driver.

Use Value: Enables smooth torque regulation down to 10% speed without audible whine or commutator arcing due to high dV/dt immunity and stable commutation.

Use Scenario: Solid-state replacement for electromechanical relays in HVAC zone dampers and pump controls.

IC Role / Device Role / Timing Role: Bidirectional AC switch activated by PLC output or microcontroller GPIO through optocoupler.

Use Value: Delivers >100,000 operations lifetime with no contact wear, while maintaining 2500 VRMS isolation between control and load circuits.

LED+Halogen Dimmer Module

Induction Cooktop Power Stage

Use Scenario: Dual-mode dimmer supporting both leading-edge (TRIAC) and trailing-edge (MOSFET) loads in smart lighting systems.

IC Role / Device Role / Timing Role: Primary AC switching element synchronized to zero-crossing for phase-cut dimming.

Use Value: Supports 1–100% dimming range on halogen lamps and compatible LED drivers without flicker, thanks to low IGT and stable holding current.

Use Scenario: Half-bridge AC switching stage driving resonant LC tank in single-zone induction cooktops.

IC Role / Device Role / Timing Role: High-current AC switch modulated at 20–50 kHz with precise gate timing to sustain resonant oscillation.

Use Value: Withstands repetitive 168 A surges during pan-detection events and maintains thermal stability via D²PAK's 1.2 °C/W R_th(j-c).

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
BTA16-600CW	TO-220AB insulated package; R_th(j-c) = 2.1 °C/W; same IGT = 35 mA, VDRM = 600 V	Requires mechanical insulation kit for heatsink mounting; lower power density than D²PAK	Select when through-hole assembly or legacy footprint compatibility is required
T1650-600G	D²PAK package; higher IGT = 50 mA; identical thermal and voltage ratings	Needs stronger gate drive (e.g., MOC3053 instead of MOC3023); less sensitive to noise	Select when enhanced noise immunity is prioritized over gate drive simplicity

Compared with BTA16-600CW, T1635-600G offers 43% lower thermal resistance for higher power density; compared with T1650-600G, it reduces gate drive power by 30% while maintaining equal dV/dt immunity - making it optimal for space-constrained, low-power-control designs.

Availability

T1635-600G is available at Aetrix Electronics and suitable for industrial static relays, appliance motor speed controllers, and induction cooktop power stages requiring stable component supply and long-term lifecycle support.

Supply support for T1635-600G 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 management, analog, and discrete devices for industrial, automotive, and consumer markets.

The T16xx series belongs to ST's Snubberless™ triac product line, engineered specifically for reliable, snubber-free AC switching in inductive and capacitive loads - targeting cost-sensitive, high-volume appliance and industrial control applications.

FAQ

Is T1635-600G compatible with zero-crossing optocouplers like MOC3041?

Yes - T1635-600G's 35 mA maximum IGT is fully compatible with MOC3041's 15–50 mA output capability. The triac's 1000 V/µs dV/dt rating ensures immunity to transient-induced false triggering during zero-crossing transitions, even under heavy inductive loads.

What is the maximum allowable case temperature for continuous 16 A operation?

Per DS2114 Figure 3, T1635-600G supports 16 A RMS at Tc = 100 °C in D²PAK configuration. Exceeding this requires linear derating: at Tc = 110 °C, maximum IT(RMS) drops to 13.5 A; at Tc = 125 °C, it falls to 9.5 A - verified under full-sine-wave conduction.

Does the insulated tab require additional creepage/clearance spacing on PCB?

No - the D²PAK's integrated ceramic insulation provides 2500 VRMS isolation between the tab and pins, satisfying IEC 60335-1 reinforced insulation requirements. No extra PCB clearance beyond standard 2.5 mm is needed between tab and adjacent traces.

Can T1635-600G replace BTA16-600BW in existing TO-220AB designs?

Electrically yes, but mechanically no - T1635-600G uses D²PAK surface-mount packaging versus BTA16-600BW's through-hole TO-220AB. Direct replacement requires PCB redesign; however, thermal performance improves by 43% (R_th(j-c) 1.2 vs. 2.1 °C/W), justifying layout revision for higher power density.

T1635-600G Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Snubberless™

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Active

Triac Type:: Alternistor - Snubberless

Voltage - Off State:: 600 V

Current - On State (It (RMS)) (Max):: 16 A

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

Current - Non Rep. Surge 50, 60Hz (Itsm):: 160A, 168A

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

T1635-600G FAQ

1.How can I place an order for T1635-600G through Aetrix?

Please submit a Request for Quotation (RFQ) for T1635-600G 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 T1635-600G reliable?

The price and inventory of T1635-600G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1635-600G is usually 5 days.

3.What payment methods are accepted for T1635-600G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1635-600G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T1635-600G?

T1635-600G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T1635-600G 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 T1635-600G?

For technical support, including T1635-600G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1635-600G requirements.

6.How does Aetrix verify that T1635-600G is sourced from the original manufacturer or authorized distributors?

All T1635-600G 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 T1635-600G meets industry standards.

7.What is the process for return or replacement of T1635-600G?

All T1635-600G units undergo pre-shipment inspection (PSI). If there is an issue with T1635-600G, 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 T1635-600G part is unused and in its original packaging.

Return procedure for T1635-600G:

1.Submit a request within 90 days.

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

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