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Infineon Technologies TD400N26KOFHPSA1
- Part No.:
- TD400N26KOFHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TD400N26KOFHPSA1.pdf
- Description:
- SCR MODULE 2.6KV 800A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:4,903
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Product details
Overview
TD400N26KOFHPSA1 from Semikron is a phase-control thyristor module configured as a single-arm, press-pack, isolated power semiconductor device for high-power AC line commutation. It delivers 400 A average on-state current (ITAVM) at TC = 85°C, 2600 V repetitive peak off-state voltage (VDRM/VRRM), and 13 kA non-repetitive surge current (ITSM), enabling use in industrial medium-voltage motor drives and DC traction rectifiers.
For engineers reviewing the TD400N26KOFHPSA1 datasheet, TD400N26KOFHPSA1 pinout, TD400N26KOFHPSA1 application, or TD400N26KOFHPSA1 equivalent, key selection criteria include gate trigger current (IGT ≤ 250 mA), critical dv/dt rating (1000 V/µs), junction-to-case thermal resistance (0.0325 °C/W per module), and pressure-contact Si-pellet construction requiring precise mounting torque (6 Nm).
Technical Context
This thyristor module operates in natural- or forced-cooled configurations with sinusoidal or rectangular conduction angles (0°–180°), supporting line-commutated rectification in B2 (two-pulse) and B6 (six-pulse) bridge topologies. Its 125 °C maximum junction temperature and AlN internal isolation enable stable operation under transient overloads and high ambient temperatures.
The device features a low on-state voltage drop (vT ≤ 1.88 V at 1500 A, Tvj max), threshold voltage (V(TO) = 1 V), and slope resistance (rT = 0.5 mΩ), ensuring predictable conduction losses. Gate-controlled delay time (tgd ≤ 4 µs) and circuit commutated turn-off time (tq typ. 300 µs) are specified under standardized test conditions per IEC 747-6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 2600 V - Maximum repetitive blocking voltage in forward/reverse direction, defining usable AC line voltage range up to 1.8 kV RMS. |
| ITAVM | 400 A at TC = 85°C - Continuous average on-state current per arm, determining steady-state thermal design basis. |
| ITSM | 13000 A at tP = 10 ms - Non-repetitive surge current capability, sizing protection against short-circuit transients. |
| (dvD/dt)cr | 1000 V/µs - Minimum required snubber dv/dt immunity to prevent false triggering during voltage transients. |
| RthJC | 0.0325 °C/W per module - Junction-to-case thermal resistance under 180° sine conduction, used to calculate heatsink requirements. |
| vT max | 1.88 V at iT = 1500 A, Tvj max - On-state voltage drop defining conduction loss at rated current and max junction temperature. |
| tq | 300 µs typ. - Circuit commutated turn-off time at Tvj max, critical for minimum commutation interval in phase-controlled rectifiers. |
Pinout & Package
TD400N26KOFHPSA1 uses a press-pack, double-sided cooled, isolated module package with AlN ceramic insulation and Si-pellet compression contact. Mechanical terminals follow DIN 46244 A standard (2.8 × 0.8 mm flat control terminals); main power terminals accept M1 (6 Nm) and M2 (12 Nm) mounting torques.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main power terminal | High-current path for forward conduction; requires direct thermal interface to heatsink via pressure contact. |
| Cathode (K) | Main power terminal | Return path for on-state current; electrically isolated from case but thermally coupled through baseplate. |
| Gate (G) | Control input | Low-energy trigger input (≤250 mA, ≤2.2 V); must be isolated from power ground to prevent false firing. |
| Cathode (K) – Case | Thermal & electrical reference | Electrically isolated case (3.0 kV RMS insulation test); serves as mechanical mounting surface and thermal sink interface. |
Key Features
| Feature | Design Value |
|---|---|
| AlN ceramic internal isolation | Enables 3.0 kV RMS isolation between power terminals and case, meeting IEC 60747 safety requirements for medium-voltage systems. |
| Pressure-contact Si-pellet construction | Eliminates wire bonds and solder layers, improving thermal cycling reliability and reducing interfacial thermal resistance by >30% vs. soldered modules. |
| 125 °C maximum junction temperature | Allows operation in harsh environments (e.g., traction converters, steel mill drives) without derating below full ITAVM rating. |
| 150 A/µs critical di/dt rating | Supports fast turn-on in high-inductance loads (e.g., transformer-fed rectifiers) without commutation failure or localized hot-spot formation. |
| 0.5 mΩ slope resistance (rT) | Provides linear on-state voltage behavior across load range, simplifying loss modeling and thermal prediction in system-level simulation. |
Applications
| Industrial Motor Drives | DC Traction Rectifiers |
|---|---|
|
Use Scenario: Phase-controlled rectification in 3-phase, 6-pulse (B6) converter feeding wound-field DC motors in rolling stock. IC Role / Device Role / Timing Role: Main power switching element in line-commutated bridge; gated at precise firing angle to regulate DC output voltage. Use Value: 2600 V VRRM supports 1.5 kV AC supply; 13 kA ITSM withstands regenerative braking surges; 300 µs tq ensures reliable commutation at 50 Hz line frequency. |
Use Scenario: Medium-voltage AC-to-DC conversion for subway propulsion systems operating from 1–3 kV AC overhead lines. IC Role / Device Role / Timing Role: Thyristor arm in dual-converter configuration providing bidirectional power flow and regenerative braking control. Use Value: 125 °C Tvj max enables operation in confined underfloor enclosures; AlN isolation meets EN 50155 insulation requirements for rail applications. |
| Medium-Voltage UPS Systems | Induction Heating Power Supplies |
|
Use Scenario: Input rectifier stage in static transfer switch-based UPS handling 690 V AC industrial mains with strict harmonic limits. IC Role / Device Role / Timing Role: Line-commutated thyristor in 12-pulse configuration (two B6 bridges) to reduce input current THD to <5%. Use Value: 0.0325 °C/W RthJC allows natural cooling at partial load; 1000 V/µs (dvD/dt)cr suppresses false triggering from PWM-induced dv/dt on adjacent converters. |
Use Scenario: High-current, low-frequency (50–400 Hz) power controller for metal melting furnaces using series-resonant topology. IC Role / Device Role / Timing Role: Phase-angle controlled switch regulating real power into resonant tank; operated at fixed conduction angle for stable thermal duty cycle. Use Value: 400 A ITAVM sustains 1 MW continuous output; 1.88 V vT max minimizes conduction loss at 1500 A peak current; pressure-contact design resists thermal fatigue from cyclic heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-control thyristor module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TT400N26KOFHPSA1 | Same VDRM/VRRM (2600 V) and ITAVM (400 A), but lower ITSM (11 kA vs. 13 kA) and higher RthJC (0.0310 °C/W per module). | Optimized for forced-air cooled B6 bridges where surge margin is less critical than thermal footprint. | Select when system-level surge protection reduces need for 13 kA ITSM, and tighter thermal layout favors lower-profile TT-series housing. |
| DT400N22KOFHPSA1 | Lower VDRM/VRRM (2200 V), higher ITAVM (510 A at TC = 71°C), identical gate parameters and thermal resistance per arm. | Better suited for 690 V AC systems requiring higher average current at reduced voltage stress. | Choose for cost-sensitive 400 V–690 V industrial drives where 2200 V blocking suffices and higher ITAVM improves efficiency at partial load. |
Compared with TT400N26KOFHPSA1, TD400N26KOFHPSA1 offers superior surge robustness and slightly better thermal performance, while DT400N22KOFHPSA1 trades voltage rating for higher current density-enabling smaller heatsinks in lower-voltage, high-current applications.
Availability
TD400N26KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, DC traction rectifiers, medium-voltage UPS systems, and induction heating power supplies requiring stable component supply and long-term lifecycle support.
Supply support for TD400N26KOFHPSA1 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
Semikron is a German manufacturer specializing in power electronic components and modules, with core expertise in high-reliability, high-power semiconductor solutions for industrial and transportation markets.
This part belongs to Semikron's "Netz-Thyristor-Modul" series designed specifically for line-commutated, medium-voltage AC/DC conversion in demanding industrial environments where thermal stability, isolation integrity, and surge resilience are critical.
FAQ
What is the recommended heatsink mounting torque for TD400N26KOFHPSA1?
The mechanical terminal mounting torque for main power connections (M1) is 6 Nm ±15%, and for electrical terminals (M2) it is 12 Nm ±10%. These values ensure optimal thermal contact and electrical integrity of the pressure-contact Si-pellet structure. Under-torque risks increased thermal resistance and localized heating; over-torque may deform the ceramic baseplate or damage internal contacts.
Does TD400N26KOFHPSA1 require external snubbers in B6 bridge operation?
Yes-external RC snubbers are required to limit dv/dt across the device during commutation. With a critical dv/dt rating of 1000 V/µs, uncontrolled voltage transients exceeding this value can cause false triggering. Snubber design must account for line inductance, commutation current, and expected di/dt to maintain safe operating area compliance per IEC 61800-5-1.
Can TD400N26KOFHPSA1 be used in forced-air versus natural-cooled configurations?
Yes-it supports both cooling methods. Natural cooling achieves 400 A ITAVM with KM17 heatsink (120 W dissipation); forced cooling with Papst 4650N fan increases usable current to ~600 A at same case temperature. Transient thermal impedance data (ZthCA) is provided separately for each mode to guide dynamic thermal design.
What is the gate drive requirement for reliable turn-on at full junction temperature?
At Tvj = 125 °C, gate trigger current must exceed 250 mA (IGT max) with pulse width ≥20 µs and diG/dt ≥1 A/µs. Recommended gate drive uses 15–20 V pulses with 2–5 Ω series resistance to ensure sufficient di/dt while limiting peak gate power. Gate non-trigger current remains ≤10 mA at VGD = 0.25 V, confirming noise immunity.
TD400N26KOFHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Active
- Structure:
- Series Connection - SCR/Diode
- Number of SCRs, Diodes:
- 1 SCR, 1 Diode
- Voltage - Off State:
- 2.6 kV
- Current - On State (It (AV)) (Max):
- 510 A
- Current - On State (It (RMS)) (Max):
- 800 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:
- Chassis Mount
TD400N26KOFHPSA1 FAQ
1.How can I place an order for TD400N26KOFHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TD400N26KOFHPSA1 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 TD400N26KOFHPSA1 reliable?
The price and inventory of TD400N26KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD400N26KOFHPSA1 is usually 5 days.
3.What payment methods are accepted for TD400N26KOFHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD400N26KOFHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TD400N26KOFHPSA1?
TD400N26KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TD400N26KOFHPSA1 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 TD400N26KOFHPSA1?
For technical support, including TD400N26KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD400N26KOFHPSA1 requirements.
6.How does Aetrix verify that TD400N26KOFHPSA1 is sourced from the original manufacturer or authorized distributors?
All TD400N26KOFHPSA1 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 TD400N26KOFHPSA1 meets industry standards.
7.What is the process for return or replacement of TD400N26KOFHPSA1?
All TD400N26KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TD400N26KOFHPSA1, 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 TD400N26KOFHPSA1 part is unused and in its original packaging.
Return procedure for TD400N26KOFHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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