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Diodes Incorporated T8M10T800UB
- Part No.:
- T8M10T800UB
- Manufacturer:
- Diodes Incorporated
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
T8M10T800UB.pdf
- Description:
- THYRISTOR TO220AB TUBE 50PCS
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
T8M10T800UB from Diodes Incorporated is a glass-passivated, lead-free, bidirectional silicon thyristor (TRIAC) in TO220AB package, rated for 800V repetitive peak off-state voltage (VDRM/VRRM), 8A RMS on-state current (IT(RMS)), and 10mA gate trigger current (IGT1) in Quadrant I. It operates up to +125°C junction temperature and is used in AC phase-controlled power regulation circuits such as light dimmers and motor speed controls.
For engineers reviewing the T8M10T800UB datasheet, T8M10T800UB pinout, T8M10T800UB application, or T8M10T800UB equivalent, key selection criteria include quadrant-triggering behavior (I/II/III only), dV/dt immunity (40 V/µs min at 125°C), thermal resistance (RθJC = 1.9°C/W), and latching/holding current thresholds (IL1 = 25mA, IH1 = 15mA) under varying junction temperatures.
Technical Context
This TRIAC employs a three-quadrant triggering architecture-gate sensitivity is specified only for Quadrants I (MT2+, G+), II (MT2−, G+), and III (MT2−, G−)-excluding Quadrant IV operation. Its glass passivation ensures stable blocking characteristics and high voltage ruggedness across temperature extremes.
Dynamic performance is defined by minimum commutating dI/dt (4.5 A/ms) and off-state dV/dt (40 V/µs at TJ = +125°C), enabling reliable turn-off in inductive AC loads without snubbers. Thermal design relies on low junction-to-case resistance (1.9°C/W) when mounted on an aluminum heatsink per JESD-51.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 800 V - Maximum repetitive peak off-state voltage the device blocks in both directions before conduction. |
| IT(RMS) | 8 A - Continuous RMS on-state current capability at TJ = +125°C with adequate heatsinking. |
| IGT1 (QI) | 10 mA - Gate trigger current required in Quadrant I at TA = +25°C; defines minimum drive strength needed for reliable turn-on. |
| IL1 / IH1 | 25 mA / 15 mA - Latching and holding currents at TA = +25°C; determine minimum load current to sustain conduction after gate pulse removal. |
| dV/dt (off-state) | 40 V/µs - Minimum rate of rise of off-state voltage the device withstands at TJ = +125°C without false triggering. |
| RθJC | 1.9 °C/W - Junction-to-case thermal resistance; enables calculation of case temperature rise under given power dissipation. |
| VT (IT = 8A) | 1.6 V - On-state voltage drop at rated RMS current; directly impacts conduction loss and thermal design. |
Pinout & Package
Package: TO220AB (Type WX), molded plastic, matte tin-plated leads, RoHS-compliant, weight ≈2.08 g. Mounting requires mechanical fastening to heatsink via center tab (MT2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 (Main Terminal 1) | Anode 1 / AC line return path | Primary current return terminal; referenced as ground or neutral in phase-control topologies. |
| MT2 (Main Terminal 2) | Anode 2 / AC line input path | High-side AC input terminal; electrically connected to heatsink tab-requires isolation if heatsink is grounded. |
| G (Gate) | Trigger control input | Low-power control terminal; triggers conduction when pulsed with ≥10mA (QI) relative to MT1. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivation | Ensures stable VDRM/VRRM performance and long-term reliability under humidity and thermal cycling stress. |
| Three-quadrant triggering | Supports gate drive in QI, QII, QIII only-reduces risk of unintended turn-on from noise in QIV, simplifying snubber design. |
| High TJ rating (+125°C) | Enables operation in compact, thermally constrained enclosures without derating below 8A RMS at full temperature range. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb), supporting eco-design requirements. |
Applications
| Light Dimming Systems | Fan Speed Controllers |
|---|---|
Use Scenario: Phase-angle control of incandescent or resistive lamp loads in residential and commercial lighting. IC Role / Device Role / Timing Role: Bidirectional AC switching element that chops sine wave conduction angle based on gate timing. Use Value: Enables smooth, flicker-free dimming with minimal EMI due to controlled zero-crossing–independent turn-on and inherent symmetry. |
Use Scenario: Variable-speed control of universal motors in ceiling fans, exhaust fans, and HVAC blowers. IC Role / Device Role / Timing Role: Main power switch modulating AC voltage delivered to motor windings via leading-edge phase control. Use Value: Delivers 8A RMS handling capacity and 55A surge tolerance (ITSM), supporting motor startup surges without failure. |
| Electric Power Tools | Heating Element Regulators |
Use Scenario: Speed and torque regulation in corded drills, sanders, and grinders using universal motors. IC Role / Device Role / Timing Role: High-current AC switch triggered by analog or digital phase-control circuitry to adjust average power. Use Value: Withstands 100 A/µs dI/dt and 40 V/µs dV/dt, ensuring robust operation during rapid load transients and brush-commutation noise. |
Use Scenario: Temperature-regulated power delivery to resistive heating elements in coffee machines, ovens, and water heaters. IC Role / Device Role / Timing Role: Solid-state relay replacement providing precise, zero-mechanical-wear AC power switching. Use Value: Glass passivation and 125°C TJ rating allow continuous operation near hot surfaces while maintaining 800V blocking margin. |
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 BT139-800E | Same TO220AB package, 8A IT(RMS), but higher IGT (≤50mA), lower dV/dt (25 V/µs), and no glass passivation. | Less suitable for noisy industrial environments or high-temperature ambient designs where dV/dt immunity and long-term stability are critical. | Select when cost sensitivity outweighs need for high dV/dt margin and extended thermal reliability. |
| Littelfuse Q6008LH4 | TO220AB, 8A IT(RMS), 800V rating, but rated for 100°C max TJ (vs. 125°C), and higher VT (1.7V typical). | Requires greater heatsinking at same load; not recommended for sealed enclosures or high-ambient-temperature applications. | Prefer for legacy designs already qualified with Littelfuse footprint and thermal models, where junction temp stays ≤100°C. |
Compared with BT139-800E and Q6008LH4, T8M10T800UB delivers superior thermal headroom (+125°C TJ), higher dV/dt immunity (40 V/µs), and glass-passivated reliability-making it optimal for compact, high-reliability AC power controllers where ambient temperature and electrical noise are uncontrolled.
Availability
T8M10T800UB is available at Aetrix Electronics and suitable for light dimming systems, fan speed controllers, electric power tools, and heating element regulators requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for T8M10T800UB 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, specializing in high-reliability, application-optimized components for power management, signal integrity, and protection.
T8M10T800UB belongs to Diodes' high-voltage TRIAC product line, engineered specifically for robust, cost-effective AC phase control in consumer and industrial appliances where thermal resilience and noise immunity are essential.
FAQ
What is the maximum gate trigger voltage for T8M10T800UB?
The maximum gate trigger voltage (VGT1) is 1.5 V under standard test conditions (VAK = 12 V, RL = 100 Ω, TA = +25°C). This value remains stable across temperature, with typical VGT ranging from 0.7 V to 1.5 V up to +125°C as shown in Figure 5 of DS45507 Rev. 3-2.
Can T8M10T800UB be used in Quadrant IV?
No. T8M10T800UB is explicitly characterized for triggering only in Quadrants I, II, and III (per datasheet Section "Features"). Quadrant IV (MT2+, G−) is not guaranteed-attempting gate drive in this quadrant may result in inconsistent or failed turn-on and is not supported by design or testing.
Is heatsinking mandatory for 8A RMS operation?
Yes. At 8A RMS and TJ = +125°C, power dissipation reaches ~12.8 W (VT × IT(AV) ≈ 1.6 V × 8 A). With RθJC = 1.9°C/W, junction-to-case rise alone is ~24°C-so case temperature must remain ≤101°C. A heatsink meeting RθCA ≤ 2.0°C/W is required to maintain safe operation; PCB copper alone is insufficient.
Does T8M10T800UB meet AEC-Q101 for automotive use?
No. While Diodes offers AEC-Q101-qualified TRIACs (e.g., Z0103MN series), T8M10T800UB is not AEC-Q101 certified. The datasheet notes that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this part number.
T8M10T800UB 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):
- 8 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 55A, 60A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 15 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO220AB (Type WX)
T8M10T800UB FAQ
1.How can I place an order for T8M10T800UB through Aetrix?
Please submit a Request for Quotation (RFQ) for T8M10T800UB 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 T8M10T800UB reliable?
The price and inventory of T8M10T800UB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T8M10T800UB is usually 5 days.
3.What payment methods are accepted for T8M10T800UB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T8M10T800UB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T8M10T800UB?
T8M10T800UB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T8M10T800UB 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 T8M10T800UB?
For technical support, including T8M10T800UB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T8M10T800UB requirements.
6.How does Aetrix verify that T8M10T800UB is sourced from the original manufacturer or authorized distributors?
All T8M10T800UB 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 T8M10T800UB meets industry standards.
7.What is the process for return or replacement of T8M10T800UB?
All T8M10T800UB units undergo pre-shipment inspection (PSI). If there is an issue with T8M10T800UB, 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 T8M10T800UB part is unused and in its original packaging.
Return procedure for T8M10T800UB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T8M10T800UB Tags
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