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Infineon Technologies T640N18TOFXPSA1
- Part No.:
- T640N18TOFXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- DO-200AA, A-PUK
- Datasheet:
-
T640N18TOFXPSA1.pdf
- Description:
- SCR MODULE 1800V 1250A DO200AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,100
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Product details
Overview
T640N18TOFXPSA1 from Infineon Technologies is a phase-control thyristor designed for high-power AC line commutation in industrial rectifiers, motor drives, and static VAR compensators. It delivers 1800 V repetitive peak off-state voltage (VDRM/VRRM), 1450 A RMS on-state current (ITRMS), and 920 A average on-state current at TC = 55 °C with 180° conduction. Its 200 A/µs critical di/dt rating supports fast gate-triggered turn-on in high-inductance loads.
For engineers reviewing the T640N18TOFXPSA1 datasheet, T640N18TOFXPSA1 pinout, T640N18TOFXPSA1 application, or T640N18TOFXPSA1 equivalent, key selection criteria include verified surge current capability (ITSM = 9400 A @ 10 ms), junction-to-case thermal resistance (RthJC = 0.039 °C/W two-sided), gate trigger sensitivity (IGT ≤ 250 mA), and critical dv/dt immunity (1000 V/µs).
Technical Context
This thyristor operates as a line-commutated, gate-controlled power switch in half- and full-wave AC phase control topologies. It features a silicon pellet with pressure-contact construction, rated for 125 °C maximum junction temperature and -40 °C to +125 °C operating case temperature range.
Its turn-off behavior is defined by circuit-commutated commutation (tq typ. 250 µs at Tvj max), requiring external forced commutation or natural AC zero-crossing. The device exhibits a well-defined on-state characteristic (vT = 1.19 V @ 600 A, 2.15 V @ 2400 A) and low slope resistance (rT = 0.5 mΩ), enabling predictable conduction loss modeling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1800 V - Maximum repetitive blocking voltage in forward and reverse directions, defining AC mains isolation capability for 1000 Vrms systems. |
| ITRMS | 1450 A - Continuous RMS current handling under sinusoidal 180° conduction, determining heatsink sizing for steady-state operation. |
| ITAVM @ TC = 55 °C | 920 A - Average on-state current limit with 180° sine conduction, used for thermal derating in forced-air-cooled designs. |
| ITSM (10 ms) | 9400 A - Non-repetitive surge current capacity at 25 °C, supporting short-circuit withstand in industrial drive DC links. |
| (diT/dt)cr | 200 A/µs - Minimum required rate of rise of on-state current to avoid localized hot-spot formation during turn-on. |
| (dvD/dt)cr | 1000 V/µs - Maximum allowable transient voltage rise across terminals before spurious turn-on occurs without gate signal. |
| RthJC (two-sided) | 0.039 °C/W - Junction-to-case thermal resistance with dual-side cooling, directly setting minimum thermal interface conductance needed. |
Pinout & Package
Package: TO-240AA (isolated stud-mount, pressure-contact thyristor with anode/cathode/gate terminals). Mechanical outline per Infineon Annex Page 3; clamping force 6–12 kN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Main power terminal - high-current path into device during conduction | Carries full load current; requires direct thermal coupling to heatsink via insulated mounting surface. |
| Cathode (2) | Main power terminal - high-current return path during conduction | Electrically referenced to system ground in common-cathode configurations; thermally coupled in dual-side cooling. |
| Gate (4) | Control input - initiates conduction when triggered | Receives pulse current ≥1 A (typ.) to ensure reliable turn-on; sensitive to noise due to 2.2 V VGT max rating. |
| Auxiliary Cathode (5) | Secondary cathode connection - improves gate control uniformity | Provides low-inductance gate return path; required for stable triggering in high-di/dt applications per datasheet layout guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Two-sided cooling interface | Enables 0.039 °C/W RthJC, reducing thermal bottleneck in high-power rectifier stacks. |
| High dv/dt immunity (1000 V/µs) | Prevents false triggering in noisy industrial environments with fast-switching adjacent devices. |
| Low on-state slope resistance (0.5 mΩ) | Minimizes conduction losses at high currents - e.g., <1.2 V drop at 2000 A enables efficient 3 MW rectifier design. |
| Gate non-trigger voltage (VGD ≤ 0.25 V) | Ensures robust noise immunity: stray gate voltages below 250 mV cannot cause unintended turn-on. |
| Short gate delay time (tgd ≤ 4 µs) | Supports precise phase-angle control in 50/60 Hz systems with ≤0.2° timing uncertainty at 1 kHz gate pulse rates. |
Applications
| Industrial Motor Drives | High-Power Rectification |
|---|---|
Use Scenario: Phase-controlled speed regulation of wound-rotor induction motors in mining conveyors and steel mill rolling stands. IC Role / Device Role / Timing Role: Main AC line switch in three-phase semi-controlled bridge, gated at precise firing angles to adjust DC bus voltage. Use Value: 920 A ITAVM rating supports continuous 1.5 MW output; 250 µs tq ensures reliable commutation during regenerative braking transitions. |
Use Scenario: Primary rectification stage in HVDC converter stations and electrolysis plants. IC Role / Device Role / Timing Role: High-current thyristor in 12-pulse Graetz bridge, synchronized to grid phase for controlled DC output. Use Value: 1800 V VDRM withstands 1.15× rated AC line voltage; 9400 A ITSM handles fault current surges during valve group short circuits. |
| Static VAR Compensation | Medium-Voltage Soft Starters |
Use Scenario: Reactive power compensation in utility substations using thyristor-switched capacitor banks. IC Role / Device Role / Timing Role: Bidirectional switching element controlling capacitor bank insertion at voltage zero-crossing to eliminate transients. Use Value: 1000 V/µs (dv/dt)cr prevents misfiring during rapid grid voltage fluctuations; auxiliary cathode ensures uniform turn-on across large-area die. |
Use Scenario: Controlled ramp-up of induction motors in HVAC chillers and pump systems. IC Role / Device Role / Timing Role: Phase-angle controller limiting inrush current by delaying conduction angle over startup period. Use Value: 200 A/µs (di/dt)cr supports clean turn-on even with high motor inductance; 1450 A ITRMS accommodates 30-second overload cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-control thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TT1600N18KOF | Higher ITAVM (1000 A @ 55 °C), same VDRM (1800 V), but higher RthJC (0.045 °C/W) and lower ITSM (8500 A). | Better average current handling but reduced surge margin; requires larger heatsink for same thermal budget. | Preferred where sustained overload duty dominates over short-circuit events. |
| T1633N18TOF | Lower ITRMS (1300 A vs. 1450 A), identical VDRM, same RthJC (0.039 °C/W), and higher tq (300 µs). | Slightly reduced conduction capacity and slower turn-off; suitable only where commutation time >250 µs is acceptable. | Select only if gate drive timing budget allows longer dead-time and system inductance permits. |
Compared with TT1600N18KOF and T1633N18TOF, T640N18TOFXPSA1 offers optimal balance of surge current headroom (9400 A), thermal efficiency (0.039 °C/W), and fast commutation (250 µs), making it preferred for high-reliability industrial rectifiers with tight thermal and timing constraints.
Availability
T640N18TOFXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, high-power rectification, static VAR compensation, and medium-voltage soft starters requiring stable component supply across multi-year production programs.
Supply support for T640N18TOFXPSA1 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 electronics, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.
This part belongs to Infineon's "Netz-Thyristor" series, engineered specifically for high-reliability, high-current phase control in utility-grade power conversion systems operating up to 125 °C junction temperature.
FAQ
What is the recommended gate drive circuit for T640N18TOFXPSA1?
A pulse transformer or optocoupler-based gate driver delivering ≥1 A peak current with <1 µs rise time is required. Gate resistor must limit IGT to ≤250 mA while ensuring diG/dt ≥1 A/µs; typical RGK = 10 Ω with 15 V pulse amplitude meets datasheet tgd ≤4 µs requirement at Tvj = 25 °C.
Can T640N18TOFXPSA1 be used in DC applications?
No - this is a line-commutated thyristor requiring natural current zero-crossing or external forced commutation to turn off. It lacks gate-turn-off (GTO) capability and will remain latched in DC circuits unless actively commutated via auxiliary circuitry.
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature depends on conduction angle and cooling method. With two-sided cooling and 180° sinusoidal conduction, TC must not exceed 85 °C to maintain ITAVM = 644 A; at 55 °C case temperature, ITAVM rises to 920 A per datasheet Fig. 6.
How does auxiliary cathode (terminal 5) affect PCB layout?
Terminal 5 must be routed with minimal inductance (<10 nH) directly to the gate driver ground reference. It provides a dedicated low-impedance return path for gate current, preventing voltage spikes that could cause false triggering - especially critical in paralleled thyristor configurations.
T640N18TOFXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AA, A-PUK
- Packaging:
- Tray
- Product Status:
- Active
- Structure:
- Single
- Number of SCRs, Diodes:
- 1 SCR
- Voltage - Off State:
- 1.8 kV
- Current - On State (It (AV)) (Max):
- 644 A
- Current - On State (It (RMS)) (Max):
- 1250 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2.2 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 9400A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
T640N18TOFXPSA1 FAQ
1.How can I place an order for T640N18TOFXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for T640N18TOFXPSA1 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 T640N18TOFXPSA1 reliable?
The price and inventory of T640N18TOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T640N18TOFXPSA1 is usually 5 days.
3.What payment methods are accepted for T640N18TOFXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T640N18TOFXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T640N18TOFXPSA1?
T640N18TOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T640N18TOFXPSA1 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 T640N18TOFXPSA1?
For technical support, including T640N18TOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T640N18TOFXPSA1 requirements.
6.How does Aetrix verify that T640N18TOFXPSA1 is sourced from the original manufacturer or authorized distributors?
All T640N18TOFXPSA1 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 T640N18TOFXPSA1 meets industry standards.
7.What is the process for return or replacement of T640N18TOFXPSA1?
All T640N18TOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T640N18TOFXPSA1, 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 T640N18TOFXPSA1 part is unused and in its original packaging.
Return procedure for T640N18TOFXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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