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Diodes Incorporated T16M35T800UD
- Part No.:
- T16M35T800UD
- Manufacturer:
- Diodes Incorporated
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
T16M35T800UD.pdf
- Description:
- THYRISTOR TO220AB TUBE 50PCS
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
T16M35T800UD from Diodes Incorporated is a glass-passivated, bidirectional silicon thyristor (TRIAC) rated for 800V repetitive peak off-state voltage and 16A RMS on-state current, with 35mA maximum gate trigger current in Quadrants I, II, and III. It operates up to +125°C junction temperature and is housed in a TO220AB package with insulated construction, designed for AC power phase control in motor drives and heating systems.
For engineers reviewing the T16M35T800UD datasheet, T16M35T800UD pinout, T16M35T800UD application, or T16M35T800UD equivalent, key selection criteria include verified dV/dt immunity (2000 V/µs at 125°C), latching/holding current behavior across temperature, thermal resistance (RθJC = 1.9 °C/W), and quadrant-specific triggering capability - all critical for reliable zero-crossing and leading-edge dimming circuits.
Technical Context
This TRIAC implements three-quadrant triggering only (QI, QII, QIII), eliminating false turn-on in QIV and improving noise immunity in noisy AC line environments. Its glass-passivated junction ensures stable VDRM/VRRM performance under transient overvoltage stress and high humidity conditions.
Thermal design is enabled by low RθJC (1.9 °C/W) and RθJL (1.9 °C/W), validated with a 100mm × 75mm × 27mm fin-type heatsink. The device supports non-repetitive surge currents up to 130A (50/60Hz full-cycle) and fusing I²t of 84.5 A²s, enabling robust short-circuit withstand in motor start-up and inrush-limited loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 800 V - Sustains peak AC line voltages up to 566 V RMS (e.g., 400 VAC industrial systems) without conduction. |
| IT(RMS) | 16 A - Supports continuous load current for 2–3 kW resistive or inductive AC loads at 125°C junction. |
| IGT (max) | 35 mA - Gate drive requirement compatible with standard microcontroller GPIO or optocoupler outputs (e.g., MOC302x). |
| dV/dt (min) | 2000 V/µs at TJ = +125°C - Resists false triggering during fast transients on mains lines, reducing snubber dependency. |
| IL / IH | 50 mA latching / 50 mA holding current - Ensures stable conduction after triggering and prevents dropout during low-current AC zero crossings. |
| RθJC | 1.9 °C/W - Enables direct mounting to heatsinks for thermal management in enclosed industrial enclosures without forced air. |
Pinout & Package
Package: TO220AB (Type WX), molded plastic, lead-free, RoHS-compliant, with matte tin-plated leads solderable per MIL-STD-202 Method 208. Internally insulated construction isolates the metal tab (MT2) from the die for safe heatsink mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Main Terminal 1 | Anode for forward conduction; common reference for gate triggering in QI/QII; connects to load return path. |
| MT2 | Main Terminal 2 | Cathode for forward conduction; electrically isolated metal tab used as heatsink interface and circuit ground reference point. |
| G | Gate | Control electrode accepting ≤35 mA pulse to initiate conduction in QI, QII, or QIII; referenced to MT1. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivation | Enables 800 V blocking stability under humid, high-pollution environments without parameter drift or premature failure. |
| Three-quadrant triggering | Eliminates QIV sensitivity, reducing EMI-induced false firing and simplifying gate drive circuitry in noisy industrial settings. |
| Internally insulated package | Allows MT2 tab to be directly mounted to grounded heatsinks without isolation hardware, lowering BOM cost and thermal resistance. |
| High dV/dt immunity | 2000 V/µs rating at 125°C enables operation on unfiltered 230/400 VAC lines with minimal external snubbing components. |
Applications
| Motor Speed Control | AC Heating Control |
|---|---|
Use Scenario: Variable-speed control of universal motors in power tools (e.g., electric drills, grinders) using phase-angle modulation. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered mid-cycle to regulate average power delivered to motor windings. Use Value: Enables precise torque/speed regulation with 16A RMS current handling and 130A surge tolerance for motor startup inrush. |
Use Scenario: Duty-cycle modulated heating element control in coffee machines and food processors. IC Role / Device Role / Timing Role: Zero-voltage switching (ZVS) or leading-edge phase control switch for resistive heater loads. Use Value: Glass passivation and 800V rating ensure long-term reliability under repeated thermal cycling and line transients. |
| Fan Speed Regulation | Light Dimming |
Use Scenario: Energy-efficient speed control of shaded-pole or PSC fans in HVAC and appliance applications. IC Role / Device Role / Timing Role: Phase-controlled AC switch interfaced with microcontroller-driven optocouplers for smooth fan ramp-up/down. Use Value: 35mA IGT and 50mA IL/IH guarantee clean turn-on/turn-off across -40°C to +125°C ambient range. |
Use Scenario: Leading-edge dimmer circuits for incandescent and halogen lamps in residential lighting. IC Role / Device Role / Timing Role: Bidirectional switching element synchronized to AC zero-crossing for flicker-free dimming. Use Value: High dV/dt immunity (2000 V/µs) prevents misfiring caused by lamp filament inrush spikes and EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TRIAC-based AC power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BTB16-800CW | Same 16A/800V rating but 50mA max IGT; higher RθJC (2.5 °C/W); requires larger heatsink area. | Compatible in motor control, but less suitable for compact fan/light dimmers due to higher gate drive demand. | Select when legacy ST ecosystem integration or specific AEC-Q101 qualification is required. |
| Littelfuse Q6016LH4 | 16A/600V rating (lower VDRM); 35mA IGT; 1.7 °C/W RθJC; 4-pin TO220 package with isolated tab. | Acceptable for 230VAC-only heating/fan control; not recommended for 400VAC industrial systems due to 600V limit. | Choose for cost-sensitive 230VAC consumer appliances where 800V margin is unnecessary. |
Compared with BTB16-800CW and Q6016LH4, T16M35T800UD delivers superior voltage margin (800V vs. 600V/800V), lower gate drive (35mA vs. 50mA), and best-in-class dV/dt immunity (2000 V/µs), making it optimal for high-noise, high-voltage industrial AC control where reliability trumps marginal cost savings.
Availability
T16M35T800UD is available at Aetrix Electronics and suitable for motor speed control, AC heating regulation, fan speed management, and light dimming applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.
Supply support for T16M35T800UD 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
T16M35T800UD belongs to Diodes' high-reliability TRIAC product line, engineered specifically for ruggedized AC power switching in industrial motor controls, home appliances, and building automation systems demanding extended temperature operation and transient immunity.
FAQ
What is the maximum junction temperature and how does it affect thermal design?
The T16M35T800UD has a maximum junction temperature of +125°C. Its RθJC of 1.9 °C/W means that with a 50°C heatsink temperature, the device can dissipate up to 36.8W before reaching thermal limit. This allows direct mounting to moderate-sized aluminum heatsinks without forced airflow in enclosed enclosures.
Does this TRIAC support four-quadrant triggering?
No. The T16M35T800UD is specified for three-quadrant triggering only (Quadrants I, II, and III). It is explicitly not rated for QIV operation, which improves noise immunity and eliminates false triggering from negative gate-to-MT1 voltage transients in high-EMI environments.
Can T16M35T800UD replace T16M10T800UD in existing designs?
Yes, with gate drive verification. Both share identical VDRM, IT(RMS), package, and thermal specs, but T16M35T800UD has higher IGT (35mA vs. 10mA). Designs using weak gate drivers (e.g., high-impedance optocouplers) may require validation to ensure reliable triggering across temperature and aging.
Is this part qualified for automotive applications?
No. While Diodes offers AEC-Q101-qualified TRIACs, the T16M35T800UD is not automotive-qualified. It is intended for industrial, commercial, and consumer applications. For automotive use, contact Diodes for PPAP-capable, IATF 16949-manufactured alternatives with AEC-Q101 certification.
T16M35T800UD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Bulk
- Product Status:
- Active
- Triac Type:
- Standard
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 16 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 130A @ 50Hz, 130A @ 60Hz
- Current - Gate Trigger (Igt) (Max):
- 35 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:
- TO220AB (Type WX)
T16M35T800UD FAQ
1.How can I place an order for T16M35T800UD through Aetrix?
Please submit a Request for Quotation (RFQ) for T16M35T800UD 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 T16M35T800UD reliable?
The price and inventory of T16M35T800UD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T16M35T800UD is usually 5 days.
3.What payment methods are accepted for T16M35T800UD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T16M35T800UD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T16M35T800UD?
T16M35T800UD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T16M35T800UD 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 T16M35T800UD?
For technical support, including T16M35T800UD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T16M35T800UD requirements.
6.How does Aetrix verify that T16M35T800UD is sourced from the original manufacturer or authorized distributors?
All T16M35T800UD 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 T16M35T800UD meets industry standards.
7.What is the process for return or replacement of T16M35T800UD?
All T16M35T800UD units undergo pre-shipment inspection (PSI). If there is an issue with T16M35T800UD, 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 T16M35T800UD part is unused and in its original packaging.
Return procedure for T16M35T800UD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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