My Inquiry
My Account
Infineon Technologies T740N26TOFXPSA1
- Part No.:
- T740N26TOFXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- DO-200AB, B-PUK
- Datasheet:
-
T740N26TOFXPSA1.pdf
- Description:
- SCR MODULE 2600V 1500A DO200AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
T740N26TOFXPSA1 from Infineon Technologies is a high-power phase-control thyristor designed for industrial AC power regulation in medium-voltage rectifiers, motor drives, and static VAR compensators. It delivers 745 A average on-state current at 85 °C case temperature, 2600 V repetitive peak off-state voltage (VDRM/VRRM), and supports 13 kA non-repetitive surge current (ITSM) with 150 A/µs critical di/dt rating.
For engineers reviewing the T740N26TOFXPSA1 datasheet, T740N26TOFXPSA1 pinout, T740N26TOFXPSA1 application, or T740N26TOFXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.026 °C/W two-sided), gate trigger current (≤250 mA), holding current (≤300 mA), and commutated turn-off time (300 µs typical).
Technical Context
This thyristor operates as a line-commutated, gate-controlled semiconductor switch in half- or full-wave AC phase control topologies. Its 2600 V blocking capability enables use in 3.3 kV-class systems with derating, while its 150 A/µs (diT/dt)cr and 1000 V/µs (dvD/dt)cr ratings ensure reliable turn-on under high dv/dt transients and fast current rise conditions.
The device features pressure-contact silicon pellet construction with dual-sided cooling interface, enabling 1690 A RMS on-state current (ITRMS) and 845 × 10³ A²s I²t rating at 25 °C. Its gate-controlled delay time is ≤4 µs, and it maintains stable latching (IL ≤1500 mA) and holding (IH ≤300 mA) behavior across –40 to +125 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 2600 V - Maximum repetitive blocking voltage in forward/reverse direction; defines usable AC line voltage class (e.g., 2.2 kV RMS systems) |
| ITAVM @ TC = 85 °C | 745 A - Continuous DC-equivalent average conduction current with two-sided heatsink cooling |
| ITRMS | 1690 A - RMS current handling capacity under sinusoidal conduction; determines thermal sizing of heatsink and busbar |
| ITSM (10 ms) | 13000 A - Non-repetitive surge current withstand; sets short-circuit protection coordination thresholds |
| (diT/dt)cr | 150 A/µs - Minimum required circuit di/dt to avoid localized hot-spot formation during turn-on |
| RthJC (two-sided) | 0.026 °C/W - Junction-to-case thermal resistance; used to calculate maximum allowable case temperature for given power loss |
| tq (typ.) | 300 µs - Typical commutated turn-off time; constrains minimum AC half-cycle duration for forced commutation |
Pinout & Package
Package: TO-264 (isolated mounting base), pressure-contact Si pellet, two-sided cooling interface, clamping force 10.5–21 kN. Weight: 170 g. Creepage distance: 5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Main current terminal (high-side) | Carries full load current during conduction; requires low-inductance connection to AC source or transformer secondary |
| Cathode (2) | Main current terminal (low-side) | Completes main conduction path; thermally coupled to heatsink via isolated mounting base |
| Gate (4) | Control input | Triggers conduction when ≥250 mA pulse applied; sensitive to noise-requires shielded routing and local RC snubber |
| Auxiliary Cathode (5) | Secondary cathode connection | Provides redundant cathode contact for improved current sharing in parallel configurations or enhanced thermal symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Two-sided thermal interface | Enables 0.026 °C/W RthJC, supporting 1690 A RMS operation with symmetric heatsinking on anode and cathode sides |
| High dv/dt immunity | 1000 V/µs critical rate ensures robustness against line transients without false triggering in noisy industrial environments |
| Low on-state voltage | 1.32 V at 650 A and 2.53 V at 2850 A reduces conduction losses and improves system efficiency at rated load |
| Short gate delay | ≤4 µs tgd allows precise firing angle control in high-frequency phase-shifted applications (e.g., 400 Hz aerospace supplies) |
| Pressure-contact die assembly | Eliminates wire bonds and solder layers, improving thermal cycling reliability and current-carrying integrity up to 13 kA surge |
Applications
| Medium-Voltage Rectification | Industrial Motor Drives |
|---|---|
Use Scenario: 3-phase 2.3 kV AC to DC conversion in marine propulsion converters and traction substations. IC Role / Device Role / Timing Role: Main power switching element in six-pulse or twelve-pulse thyristor bridges; fired at programmable phase angles to regulate DC output voltage. Use Value: 2600 V blocking rating supports direct connection to 2.3 kV distribution lines with margin; 745 A ITAVM enables compact converter design without parallel devices. | Use Scenario: Speed-controlled AC induction motors in steel mill rolling stands and cement kiln drives. IC Role / Device Role / Timing Role: Phase-controlled AC line commutation in circulating-current dual-bridge configurations for reversible four-quadrant operation. Use Value: 300 µs tq and 150 A/µs (diT/dt)cr allow precise commutation timing and prevent commutation failure during rapid torque reversal. |
| Static VAR Compensation | DC Arc Furnace Regulation |
Use Scenario: Reactive power compensation in utility grid interconnections using thyristor-switched capacitors (TSC) and reactors (TSR). IC Role / Device Role / Timing Role: Bidirectional switching element in anti-parallel pairs; triggered synchronously with voltage zero-crossings to minimize inrush and harmonics. Use Value: Low gate trigger current (250 mA max) simplifies driver design; 100 mA off-state leakage ensures minimal capacitor discharge between cycles. | Use Scenario: Electrode current regulation in 40–100 MVA electric arc furnaces for scrap melting. IC Role / Device Role / Timing Role: Primary current controller in primary-side AC regulation circuits; handles highly distorted, asymmetrical, and transient-rich waveforms. Use Value: 13 kA ITSM and 845 × 10³ A²s I²t withstand capability accommodates furnace short-circuit events without destruction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-control thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TT740N26KOF | Same VDRM/VRRM (2600 V) and ITAVM (745 A), but TO-264 package with integrated heat sink interface and lower RthJC (0.024 °C/W) | Optimized for single-source thermal management; lacks auxiliary cathode terminal | Select when simplified mechanical integration and marginally better thermal performance outweigh need for auxiliary cathode redundancy |
| T740N26KOXPSA1 | Identical electrical specs and pinout, but uses oxide-passivated gate structure for improved ESD tolerance and gate threshold stability over life | Better long-term gate parameter drift performance in high-humidity or high-vibration environments | Select for mission-critical infrastructure where gate reliability over 20+ year service life is prioritized |
Compared with TT740N26KOF and T740N26KOXPSA1, the T740N26TOFXPSA1 offers auxiliary cathode support for parallel operation and proven field reliability in legacy industrial drives, while trading minor thermal margin and gate aging performance for broader mechanical compatibility and cost efficiency.
Availability
T740N26TOFXPSA1 is available at Aetrix Electronics and suitable for medium-voltage rectification, industrial motor drives, static VAR compensation, and DC arc furnace regulation requiring stable component supply and long-lifecycle support.
Supply support for T740N26TOFXPSA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy systems.
This thyristor belongs to Infineon's "Netz-Thyristor" series, engineered specifically for high-reliability, high-current phase-angle control in utility-scale power conversion and heavy industrial equipment.
FAQ
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature (TC) is 85 °C for rated average on-state current (ITAVM = 745 A). At higher currents, TC must be reduced per the derating curves in the datasheet-e.g., 1070 A ITAVM is permitted only at TC = 55 °C with 180° conduction angle and sinusoidal waveform.
Does this thyristor require forced gate triggering or can it operate with simple DC pulses?
It requires actively controlled gate pulses meeting minimum amplitude (≥2.2 V), width (≥20 µs), and current (≥250 mA) specifications. Simple DC pulses are insufficient due to latching current requirements (IL ≤1500 mA); gate drivers must deliver sufficient charge (QG ≈ iG × tg) to ensure reliable turn-on under worst-case junction temperature.
Can T740N26TOFXPSA1 be paralleled with identical units?
Yes-its auxiliary cathode terminal (pin 5) and matched dynamic parameters (e.g., uniform vT characteristics and tq dispersion <15%) enable stable current sharing. Parallel operation requires matched gate drive timing (<1 µs skew), symmetrical busbar layout, and individual gate resistors to damp oscillation.
Is heatsink mounting orientation critical for thermal performance?
Yes-optimal performance requires two-sided cooling: heatsinks must contact both anode and cathode surfaces with uniform clamping force (10.5–21 kN). Mounting with only one side cooled degrades RthJC to 0.050 °C/W (anode-only) or 0.058 °C/W (cathode-only), reducing RMS current capability by ~35%.
T740N26TOFXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AB, B-PUK
- Packaging:
- Bulk
- Product Status:
- Active
- Structure:
- Single
- Number of SCRs, Diodes:
- 1 SCR
- Voltage - Off State:
- 2.6 kV
- Current - On State (It (AV)) (Max):
- 745 A
- Current - On State (It (RMS)) (Max):
- 1500 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2.2 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 13000A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
T740N26TOFXPSA1 FAQ
1.How can I place an order for T740N26TOFXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for T740N26TOFXPSA1 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 T740N26TOFXPSA1 reliable?
The price and inventory of T740N26TOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T740N26TOFXPSA1 is usually 5 days.
3.What payment methods are accepted for T740N26TOFXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T740N26TOFXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T740N26TOFXPSA1?
T740N26TOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T740N26TOFXPSA1 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 T740N26TOFXPSA1?
For technical support, including T740N26TOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T740N26TOFXPSA1 requirements.
6.How does Aetrix verify that T740N26TOFXPSA1 is sourced from the original manufacturer or authorized distributors?
All T740N26TOFXPSA1 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 T740N26TOFXPSA1 meets industry standards.
7.What is the process for return or replacement of T740N26TOFXPSA1?
All T740N26TOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T740N26TOFXPSA1, 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 T740N26TOFXPSA1 part is unused and in its original packaging.
Return procedure for T740N26TOFXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T740N26TOFXPSA1 Tags
-
MCC95-16IO1B
IXYS
-
TT190N16SOFHPSA2
Infineon Technologies
-
MCC162-16IO1
IXYS
-
B612F-2T
Sensata-Crydom
-
MCC312-16IO1
IXYS
-
TT250N16KOFHPSA1
Infineon Technologies
-
CLA60PD1200NA
IXYS
-
MCC56-16IO1B
IXYS
-
TD120N16SOFHPSA1
Infineon Technologies
-
MCC95-12IO1B
IXYS
-
MCMA140P1600TA
IXYS
-
B512F-2
Sensata-Crydom
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
