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NXP Semiconductors BTA312X-800B,127
- Part No.:
- BTA312X-800B,127
- Manufacturer:
- NXP Semiconductors
- Category:
- TRIACs
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
BTA312X-800B,127.pdf
- Description:
- TRIAC 800V 12A TO220F
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
BTA312X-800B from NXP Semiconductors is a planar passivated 3-quadrant high-commutation triac in TO-220F (SOT186A) package, rated for 800 V repetitive peak off-state voltage, 12 A RMS on-state current at heatsink temperature ≤59 °C, and 100 A non-repetitive peak on-state current. It operates snubberlessly up to full rated RMS current at 125 °C junction temperature and is used in electronic thermostats and high-power motor controls.
For engineers reviewing the BTA312X-800B datasheet, BTA312X-800B pinout, BTA312X-800B application, or BTA312X-800B equivalent, key selection criteria include dV/dt immunity (≥1000 V/µs), isolated mounting base (2500 V RMS isolation), gate trigger current range (2–50 mA across all quadrants), and snubberless commutation capability under high dI/dt conditions.
Technical Context
The BTA312X-800B uses 3Q (three-quadrant) triggering architecture-gate firing only in quadrants I, II, and III-eliminating quadrant IV operation to improve noise immunity and reduce false turn-on. Its planar passivation ensures voltage ruggedness and stable performance across -40 °C to 125 °C junction temperature range.
It delivers snubberless commutation with dIcom/dt ≥30 A/ms at 125 °C and 12 A RMS load, supported by high dV/dt immunity (min 1000 V/µs) and isolated heatsink mounting. The device sustains 2500 V RMS isolation between terminals and external heatsink, enabling safe integration into grounded-chassis AC control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 800 V - Withstands repetitive 800 V peak off-state voltage without conduction, suitable for 230 V AC mains with safety margin. |
| IT(RMS) | 12 A - Sustains 12 A RMS current with heatsink ≤59 °C; enables direct control of ~2.7 kW resistive loads at 230 V AC. |
| ITSM | 100 A - Handles 100 A non-repetitive surge (20 ms, 50 Hz sine) for motor startup or inrush current suppression. |
| dV/dt | 1000 V/µs - Immune to rapid voltage transients; prevents false triggering in noisy industrial environments. |
| Rth(j-h) | 4 K/W - Thermal resistance from junction to heatsink with compound; allows efficient heat transfer in compact enclosures. |
| VGT | 0.25–0.4 V - Low gate trigger voltage ensures reliable turn-on even with weak or high-impedance gate drivers. |
| IGT | 2–50 mA - Gate trigger current range across all three active quadrants supports robust interfacing with microcontrollers and optocouplers. |
| Visol(RMS) | 2500 V - Provides reinforced isolation between main terminals and heatsink, meeting basic insulation requirements for Class I appliances. |
Pinout & Package
Package: TO-220F (SOT186A), plastic single-ended "full pack" with isolated mounting base, 1 mounting hole, and 3 leads. Mounting base is electrically isolated from terminals and rated for 2500 V RMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | T1 | Main terminal 1 - Primary current path anode for quadrant I/II operation; connects to load return side in standard AC switching configurations. |
| 2 | T2 | Main terminal 2 - Primary current path cathode/anode depending on polarity; typically connected to AC line input in phase-control applications. |
| 3 | G | Gate - Control electrode accepting low-current trigger signal; designed for 2–50 mA drive across T2+/G+, T2+/G−, and T2−/G− quadrants. |
| mb | Mounting base | Electrically isolated heatsink interface - enables direct metal-to-metal thermal coupling without electrical shorting; rated 2500 V RMS isolation. |
Key Features
| Feature | Design Value |
|---|---|
| 3Q triggering only | Eliminates quadrant IV sensitivity, reducing EMI-induced false turn-on in noisy environments such as washing machine motor drives. |
| Snubberless commutation | Commutates full 12 A RMS load at 125 °C junction temperature without external RC snubber, simplifying PCB layout and reducing component count. |
| Isolated mounting base | Enables direct attachment to grounded chassis while maintaining 2500 V RMS isolation, critical for Class I appliance safety compliance. |
| High dV/dt immunity | Minimum 1000 V/µs off-state dV/dt rating ensures stable blocking during fast transients from inductive load switching or lightning surges. |
| Planar passivation | Provides consistent surface insulation and long-term reliability under humid or contaminated operating conditions per IEC 60134 limiting values. |
| Low gate trigger voltage | VGT as low as 0.25 V at 125 °C enables compatibility with 3.3 V logic-level gate drivers and low-power optocouplers like MOC3021. |
Applications
| Electronic Thermostats | Washing Machine Motor Control |
|---|---|
|
Use Scenario: Precise on/off or phase-angle control of heating elements and cooling compressors in residential HVAC systems. IC Role / Device Role / Timing Role: Main AC power switch regulating energy delivery to resistive or inductive loads based on temperature feedback. Use Value: Snubberless operation eliminates timing-critical RC networks; 3Q architecture rejects EMI from nearby compressor relays and fan motors. |
Use Scenario: Bidirectional speed and torque control of universal motors in drum washers and spin cycles. IC Role / Device Role / Timing Role: High-dI/dt AC switch enabling zero-crossing or phase-controlled power delivery to motor windings. Use Value: dIcom/dt ≥30 A/ms supports clean commutation during rapid direction reversal; isolated base simplifies chassis-grounded enclosure design. |
| DC Motor Drives (Rectifier-Fed) | Solenoid Actuation Systems |
|
Use Scenario: Controlling DC motors powered by bridge rectifiers in industrial automation and power tools. IC Role / Device Role / Timing Role: AC-side switching element before rectification, enabling input power regulation prior to DC conversion. Use Value: 800 V VDRM accommodates rectified 230 V AC peaks (~325 V); high dV/dt immunity prevents false turn-on from rectifier switching noise. |
Use Scenario: High-reliability on/off actuation of solenoids in vending machines, fluid valves, and locking mechanisms. IC Role / Device Role / Timing Role: Robust AC switch delivering controlled pulse energy to inductive solenoid coils. Use Value: 100 A ITSM handles solenoid inrush surges; latching/holding current specs (IL/IH ≤60 mA) ensure stable hold-on behavior with minimal gate drive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3Q triac applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BTB12-800BW | Same 800 V VDRM, 12 A IT(RMS), TO-220AB package; lacks isolated mounting base (non-isolated heatsink tab). | Requires insulating washer for chassis-grounded designs; unsuitable where 2500 V isolation is mandated. | Select when cost optimization outweighs isolation requirement and mechanical mounting permits insulated hardware. |
| ON Semiconductor MAC12N8G | 800 V VDRM, 12 A IT(RMS), but 4Q (four-quadrant); higher IGT (max 50 mA vs. 50 mA typ. for BTA312X-800B) and lower dV/dt (600 V/µs min). | More susceptible to noise-induced false triggering in EMI-heavy environments like vacuum cleaners. | Choose only if quadrant IV operation is required; otherwise BTA312X-800B offers superior noise immunity and snubberless performance. |
Compared with BTB12-800BW and MAC12N8G, the BTA312X-800B uniquely combines isolated mounting base, 3Q noise immunity, and verified snubberless commutation-making it the preferred choice for safety-critical, high-noise, or thermally constrained AC control designs where gate drive simplicity and reliability are prioritized over quadrant IV flexibility.
Availability
BTA312X-800B is available at Aetrix Electronics and suitable for electronic thermostats, washing machine motor controls, and rectifier-fed DC inductive load applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for BTA312X-800B 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer markets.
The BTA312X-800B belongs to NXP's Hi-Com Triac product line, engineered specifically for snubberless, high-noise-immunity AC power control in white goods, HVAC, and industrial equipment where reliability under harsh electrical conditions is essential.
FAQ
What is the maximum junction temperature rating for the BTA312X-800B?
The BTA312X-800B has a maximum junction temperature (Tj) of 125 °C, as defined in its Absolute Maximum Ratings table. This rating enables snubberless commutation of the full 12 A RMS current at heatsink temperatures up to 59 °C, provided thermal resistance from junction to heatsink (Rth(j-h)) remains ≤4 K/W with thermal compound. Exceeding 125 °C risks permanent degradation of the planar passivation layer and triac latch-up behavior.
Does the BTA312X-800B require a snubber circuit in typical motor control applications?
No, the BTA312X-800B is explicitly characterized for snubberless operation: it commutates the full rated 12 A RMS current at 125 °C junction temperature without external RC networks. This capability is validated under high dIcom/dt (≥30 A/ms) and high dV/dt (≥1000 V/µs) conditions per its datasheet Figures 4–5 and Table 7. Snubbers may still be used for electromagnetic compatibility (EMC) filtering, but are not required for functional commutation stability.
What does "3Q" mean for the BTA312X-800B, and how does it affect gate drive design?
"3Q" means three-quadrant operation: the BTA312X-800B triggers only in quadrants I (T2+, G+), II (T2+, G−), and III (T2−, G−), excluding quadrant IV (T2−, G+). This eliminates false turn-on from negative gate pulses during high-noise events. Gate drive circuits must therefore avoid applying negative voltage to G relative to T2−; standard optocoupler drivers like MOC3021 or microcontroller GPIOs with series resistors are fully compatible without polarity inversion.
Can the mounting base of the BTA312X-800B be directly connected to chassis ground?
Yes-the mounting base (mb) of the BTA312X-800B is electrically isolated from all three terminals (T1, T2, G) and rated for 2500 V RMS isolation per Table 6. This allows direct mechanical attachment to a grounded metal chassis without risk of short circuit, satisfying basic insulation requirements for Class I appliances. No insulating pad or bushing is required unless local safety standards mandate additional creepage/clearance beyond the device's intrinsic rating.
What is the gate trigger current specification for the BTA312X-800B across all operating quadrants?
The BTA312X-800B specifies a gate trigger current (IGT) of 2–50 mA across all three active quadrants (T2+/G+, T2+/G−, T2−/G−) at VD = 12 V, IT = 0.1 A, and Tj = 25 °C (Table 7). This uniform range simplifies driver design-single resistor value (e.g., 220 Ω from 12 V) suffices for reliable triggering regardless of AC half-cycle polarity, unlike 4Q triacs that exhibit quadrant-dependent IGT variation.
BTA312X-800B,127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- Packaging:
- Bulk
- Product Status:
- Active
- Triac Type:
- Standard
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 12 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 95A, 105A
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Current - Hold (Ih) (Max):
- 60 mA
- Configuration:
- Single
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220F
BTA312X-800B,127 FAQ
1.How can I place an order for BTA312X-800B,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTA312X-800B,127 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 BTA312X-800B,127 reliable?
The price and inventory of BTA312X-800B,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTA312X-800B,127 is usually 5 days.
3.What payment methods are accepted for BTA312X-800B,127?
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4.How is shipping managed for BTA312X-800B,127?
BTA312X-800B,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTA312X-800B,127 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 BTA312X-800B,127?
For technical support, including BTA312X-800B,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTA312X-800B,127 requirements.
6.How does Aetrix verify that BTA312X-800B,127 is sourced from the original manufacturer or authorized distributors?
All BTA312X-800B,127 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 BTA312X-800B,127 meets industry standards.
7.What is the process for return or replacement of BTA312X-800B,127?
All BTA312X-800B,127 units undergo pre-shipment inspection (PSI). If there is an issue with BTA312X-800B,127, 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 BTA312X-800B,127 part is unused and in its original packaging.
Return procedure for BTA312X-800B,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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