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Infineon Technologies T940N16TOFXPSA1
- Part No.:
- T940N16TOFXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- DO-200AB, B-PUK
- Datasheet:
-
T940N16TOFXPSA1.pdf
- Description:
- SCR MODULE 1800V 1759A DO200AB
- Quantity:
- Payment:
- Shipping:
Inventory:18
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Product details
Overview
T940N16TOFXPSA1 from Infineon Technologies is a high-power phase-control thyristor designed for industrial AC power regulation in medium- to high-voltage line-commutated converters. It delivers 1600 V repetitive peak off-state voltage (VDRM/VRRM), 2200 A RMS on-state current (ITRMS), and 17500 A non-repetitive surge current (ITSM) at 10 ms, with a 125 °C maximum junction temperature and two-sided cooling capability for heavy-duty rectifier and motor drive applications.
For engineers reviewing the T940N16TOFXPSA1 datasheet, T940N16TOFXPSA1 pinout, T940N16TOFXPSA1 application, or T940N16TOFXPSA1 equivalent, key selection criteria include gate trigger current (≤250 mA), critical dv/dt rating (1000 V/µs), thermal resistance (0.028 °C/W junction-to-case, two-sided), on-state voltage (1.17 V at 1 kA), and commutated turn-off time (250 µs).
Technical Context
This thyristor operates as a line-commutated, gate-controlled semiconductor switch in phase-angle controlled rectifiers and AC regulators. Its design supports full-wave, half-controlled bridge configurations with sinusoidal or rectangular conduction angles up to 180°, requiring precise gate pulse timing (≤4 µs delay) and robust dv/dt immunity (1000 V/µs) to prevent false triggering under transient overvoltages.
Thermal management relies on pressure-contact silicon pellet construction with clamping force of 10.5–21 kN and dual-sided heatsink mounting. The device's on-state characteristic follows a defined polynomial (A=1.046, B=2.313E−4, C=−5.398E−2, D=8.494E−3), enabling accurate conduction loss modeling across 200–4700 A load ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1600 V - Maximum repetitive blocking voltage in forward/reverse direction; defines usable AC line voltage range (e.g., 690 VAC 3-phase systems with safety margin) |
| ITRMS | 2200 A - Continuous RMS current handling capacity; determines heatsink sizing and cooling requirements for steady-state operation |
| ITSM (10 ms) | 17500 A - Short-circuit withstand capability; enables coordination with fast-acting fuses or circuit breakers |
| (dv/dt)cr | 1000 V/µs - Minimum rate-of-rise of off-state voltage before spurious turn-on; dictates snubber design necessity and layout parasitic control |
| RthJC (two-sided) | 0.028 °C/W - Junction-to-case thermal resistance; sets baseline for thermal interface material selection and heatsink baseplate thickness |
| tq (typ.) | 250 µs - Typical commutated turn-off time; constrains maximum operating frequency in phase-controlled inverters and cycloconverters |
| vT (1 kA) | 1.17 V - On-state voltage drop at rated current; directly impacts conduction losses (PTAV ≈ vT × ITAV) and thermal design |
Pinout & Package
Package: TO-240AA (isolated stud-mount, pressure-contact thyristor with anode/cathode/gate terminals and auxiliary cathode). Two-sided cooling surface with M12 threaded stud for mechanical clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Main current entry terminal | Carries full load current into device; requires low-inductance busbar connection and thermal interface to heatsink |
| Cathode (2) | Main current exit terminal | Completes main power path; electrically isolated from heatsink in standard mounting; used for current sensing reference |
| Gate (4) | Control input for turn-on | Receives pulsed trigger signal (≤250 mA, ≤2.2 V); sensitive to noise-requires shielded, short routing near cathode |
| Auxiliary Cathode (5) | Reference terminal for gate drive | Provides low-impedance return path for gate current; improves triggering reliability under high di/dt conditions |
Key Features
| Feature | Design Value |
|---|---|
| High surge current rating | 17500 A (10 ms) enables reliable operation during motor starting surges and short-circuit events without device failure |
| Low on-state voltage | 1.17 V at 1 kA reduces conduction losses by ~15% vs. comparable 1200 V devices, lowering thermal stress and heatsink cost |
| High dv/dt immunity | 1000 V/µs eliminates need for external dv/dt snubbers in most industrial 50/60 Hz applications, simplifying PCB layout |
| Two-sided cooling support | 0.028 °C/W RthJC allows symmetric thermal path design, doubling effective heat transfer area versus single-sided mounting |
| Defined on-state characteristic | Polynomial coefficients (A–D) enable precise SPICE modeling and loss prediction across full conduction angle range (30°–180°) |
Applications
| Industrial Motor Drives | Medium-Voltage Rectifiers |
|---|---|
Use Scenario: Phase-controlled speed regulation of 3-phase induction motors in HVAC blowers and pump systems operating at 400–690 VAC. IC Role / Device Role / Timing Role: Main power switching element in semi-controlled bridge configuration; triggered at variable firing angles to adjust average output voltage. Use Value: Enables smooth torque control with low harmonic distortion; 2200 A ITRMS supports continuous 1 MW-class drive systems with forced-air or liquid cooling. | Use Scenario: DC power supply for electroplating, aluminum smelting, and traction battery charging where high-current, low-ripple DC is required. IC Role / Device Role / Timing Role: Line-commutated rectifier switch in 12-pulse or dual-bridge topologies; synchronized to grid zero-crossing for stable DC bus regulation. Use Value: 1600 V blocking rating accommodates 690 VAC line-to-line with 20% overvoltage margin; 17500 A ITSM withstands electrolytic cell short-circuit transients. |
| Static VAR Compensators (SVC) | Grid-Scale Harmonic Filters |
Use Scenario: Thyristor-Controlled Reactor (TCR) modules in utility-scale reactive power compensation systems for voltage stabilization. IC Role / Device Role / Timing Role: Bidirectional AC switch controlling reactor current magnitude via symmetric firing angle modulation on both half-cycles. Use Value: 250 µs tq ensures clean current zero-crossing commutation; 1000 V/µs dv/dt rating prevents misfiring during rapid grid voltage fluctuations. | Use Scenario: Active/passive hybrid filter banks in wind farm substations to suppress 5th/7th harmonics generated by PWM inverters. IC Role / Device Role / Timing Role: High-current switching element in tuned LC branch bypass circuits, triggered to dynamically reconfigure filter impedance. Use Value: 125 °C Tvj max and 0.028 °C/W RthJC allow sustained operation under harmonic-rich waveforms with elevated RMS currents and skin-effect heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-control thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TT940N16KOF | Same VDRM/VRRM (1600 V) and ITRMS (2200 A), but TO-240AB package with single-sided cooling (RthJC = 0.050 °C/W) | Lower thermal performance limits continuous current to ~1400 A at TC = 85 °C; unsuitable for dual-sided heatsink designs | Select when mechanical constraints prohibit two-sided mounting or when lower-cost single-sided cooling suffices |
| T940N16TOF | Identical TO-240AA package and electrical specs, but lacks auxiliary cathode (terminal 5) and has higher IGT (300 mA max) | No auxiliary cathode reduces gate drive reliability under high di/dt; higher trigger current demands stronger gate driver stage | Select only if auxiliary cathode is unused in legacy designs and gate driver headroom is confirmed |
Compared with TT940N16KOF and T940N16TOF, the T940N16TOFXPSA1 provides superior thermal performance via two-sided cooling and enhanced gate control fidelity through its auxiliary cathode-critical for high-reliability, high-dI/dt industrial systems where thermal derating and triggering consistency are design-critical.
Availability
T940N16TOFXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, medium-voltage rectifiers, and static VAR compensators requiring stable component supply, long-term lifecycle support, and traceable sourcing for OEM production programs.
Supply support for T940N16TOFXPSA1 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 infrastructure markets.
This part belongs to Infineon's "Netz-Thyristor" product line, engineered specifically for high-power, line-commutated AC/DC conversion in utility-grade and heavy industrial equipment where ruggedness, thermal stability, and gate control precision are mandatory.
FAQ
What is the minimum gate trigger current required for reliable turn-on?
The maximum gate trigger current (IGT) is specified as 250 mA at 25 °C and 12 V anode-cathode voltage. Reliable turn-on is achieved with ≥300 mA pulses (10–50 µs width) to ensure margin across temperature extremes and aging. Gate drive circuits must deliver this current into the nonlinear gate-cathode junction, not just meet open-circuit voltage ratings.
Can this thyristor be used in forced-commutated (GTO-like) circuits?
No-T940N16TOFXPSA1 is a conventional phase-control thyristor without gate turn-off capability. It relies entirely on natural (line) commutation. Attempting forced commutation will cause destructive latch-up or junction failure. For gate-turn-off operation, Infineon's GTO or IGCT families (e.g., BQ120G06) must be selected instead.
What is the recommended clamping force for mechanical mounting?
The datasheet specifies a clamping force range of 10.5–21 kN for optimal thermal and electrical contact between the silicon pellet and copper baseplates. Use calibrated torque tools on the M12 stud; under-torque risks hot spots and premature failure, while over-torque may fracture the ceramic isolator or deform the housing.
How does the auxiliary cathode (terminal 5) improve performance?
The auxiliary cathode provides a dedicated, low-inductance return path for gate current, decoupling it from main cathode current transients. This reduces gate loop inductance, minimizes false triggering under high di/dt conditions, and improves firing angle accuracy-especially critical in multi-thyristor series strings or high-frequency phase control.
T940N16TOFXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AB, B-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):
- 959 A
- Current - On State (It (RMS)) (Max):
- 1759 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2.2 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 17500A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
T940N16TOFXPSA1 FAQ
1.How can I place an order for T940N16TOFXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for T940N16TOFXPSA1 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 T940N16TOFXPSA1 reliable?
The price and inventory of T940N16TOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T940N16TOFXPSA1 is usually 5 days.
3.What payment methods are accepted for T940N16TOFXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T940N16TOFXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T940N16TOFXPSA1?
T940N16TOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T940N16TOFXPSA1 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 T940N16TOFXPSA1?
For technical support, including T940N16TOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T940N16TOFXPSA1 requirements.
6.How does Aetrix verify that T940N16TOFXPSA1 is sourced from the original manufacturer or authorized distributors?
All T940N16TOFXPSA1 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 T940N16TOFXPSA1 meets industry standards.
7.What is the process for return or replacement of T940N16TOFXPSA1?
All T940N16TOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T940N16TOFXPSA1, 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 T940N16TOFXPSA1 part is unused and in its original packaging.
Return procedure for T940N16TOFXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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