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Infineon Technologies T420N16TOFXPSA1
- Part No.:
- T420N16TOFXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- DO-200AA, A-PUK
- Datasheet:
-
T420N16TOFXPSA1.pdf
- Description:
- SCR MODULE 1800V 750A DO200AA
- Quantity:
- Payment:
- Shipping:
Inventory:6
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Product details
Overview
T420N16TOFXPSA1 from Infineon Technologies is a 1600 V, 424 A average on-state current (TC = 85 °C), phase-control thyristor designed for high-power AC line commutated switching in industrial rectifiers, motor drives, and static VAR compensators. It features 7200 A non-repetitive surge current capability, 120 A/µs critical di/dt rating, and 1000 V/µs critical dv/dt rating - enabling robust gate-controlled turn-on under high dV/dt transients in 50/60 Hz mains applications.
For engineers reviewing the T420N16TOFXPSA1 datasheet, T420N16TOFXPSA1 pinout, T420N16TOFXPSA1 application, or T420N16TOFXPSA1 equivalent, this device serves as a high-current, pressure-contact thyristor requiring precise clamping force (5–10 kN), two-sided heatsinking, and gate trigger current ≤200 mA at 12 V - critical for reliable firing in high-temperature, high-dI/dt industrial power conversion systems.
Technical Context
This thyristor operates in line-commutated mode with a typical circuit commutated turn-off time (tq) of 220 µs at Tvj max and ITAVM, supporting controlled conduction angles from 30° to 180° in sinusoidal and rectangular current waveforms. Its gate-controlled delay time (tgd) is ≤4 µs under standardized IEC 60747-6 test conditions (iGM = 1 A, diG/dt = 1 A/µs).
The device uses a silicon pellet with pressure-contact construction and dual control terminals: flat Gate and auxiliary cathode. Its on-state characteristic follows vT = 1.064 + 2.088×10⁻⁴·iT − 0.1031·ln(iT) + 0.03807·iT² (Tvj = 125 °C), enabling accurate conduction loss modeling up to 2100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1600 V repetitive peak forward/reverse blocking voltage - supports direct connection to 1100 V AC line systems with safety margin. |
| ITAVM (TC = 85 °C) | 424 A average on-state current - defines continuous DC or sine-conducted load capability with two-sided cooling. |
| ITRMS | 960 A RMS on-state current - determines thermal stress under real-world AC waveform duty cycles. |
| (diT/dt)cr | 120 A/µs critical rate of rise of on-state current - sets minimum snubber design requirement to prevent false turn-on. |
| (dvD/dt)cr | 1000 V/µs critical rate of rise of off-state voltage - defines maximum allowable transient voltage slew before unintended triggering. |
| RthJC (two-sided) | 0.056 °C/W junction-to-case thermal resistance - enables 750 A RMS operation with ≤40 K temperature rise across case interface. |
| tq (typ.) | 220 µs circuit commutated turn-off time - constrains minimum zero-crossing interval for reliable natural commutation. |
Pinout & Package
Package: TO-240AA (isolated stud mount, pressure-contact Si pellet). Two-sided cooling surface with anode and cathode metallization. Clamping force: 5–10 kN. Weight: 110 g. Creepage distance: 6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Main current terminal (high-side conduction path) | Carries full load current during forward conduction; requires low-inductance busbar connection and thermal interface to heatsink. |
| Cathode (2) | Main current terminal (low-side return path) | Completes main conduction loop; electrically isolated from heatsink in standard mounting; used for current sensing reference. |
| Gate (4) | Control input for turn-on initiation | Receives ≤200 mA trigger pulse; flat contact geometry optimized for low-inductance gate drive wiring in high-noise environments. |
| Auxiliary Cathode (5) | Secondary cathode terminal for gate reference stability | Provides low-impedance local cathode reference near gate to suppress false triggering under high dv/dt across main cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si pellet | Enables scalable current handling without wire bonds; eliminates bond-wire failure modes under thermal cycling. |
| Two-sided cooling interface | Reduces RthJC to 0.056 °C/W - allows 424 A continuous operation at TC = 85 °C with symmetric heatsink mounting. |
| 1000 V/µs dv/dt immunity | Supports direct use in unfiltered 50/60 Hz AC lines with fast-rising transients without external snubbers. |
| 220 µs tq (typ.) | Permits reliable commutation in 50 Hz systems down to ~10° conduction angle - suitable for fine-resolution phase control. |
| 120 A/µs di/dt rating | Allows rapid turn-on into highly inductive loads (e.g., transformer primaries) without localized hot-spot formation. |
Applications
| Industrial AC Motor Drives | High-Power Rectifier Systems |
|---|---|
|
Use Scenario: Phase-controlled speed regulation of 3-phase induction motors rated up to 1 MW in steel mill rolling stands. IC Role / Device Role / Timing Role: Main power switching element in 3-phase bridge configuration; gated at precise firing angles to modulate output voltage and torque. Use Value: Delivers 424 A average current at 85 °C case temperature with <220 µs turn-off latency - enabling smooth low-speed torque control without commutation failure. |
Use Scenario: 12-pulse rectification for DC traction supply in urban rail substations (2.5 kV DC output). IC Role / Device Role / Timing Role: Line-commutated thyristor in double-star rectifier bank; synchronized to grid zero-crossings for harmonic cancellation. Use Value: 1600 V VDRM withstands 1.2× peak line voltage; 7200 A ITSM handles short-circuit fault currents during converter protection events. |
| Static VAR Compensators (SVC) | Medium-Voltage Soft Starters |
|
Use Scenario: Thyristor-Controlled Reactor (TCR) modules for dynamic reactive power compensation in petrochemical plant grids. IC Role / Device Role / Timing Role: Bidirectional phase-controlled conduction in anti-parallel pair; fired asymmetrically to generate controllable fundamental-frequency reactive current. Use Value: 1000 V/µs dv/dt rating prevents spurious turn-on from grid transients; 120 A/µs di/dt supports rapid firing-angle adjustment for sub-cycle VAR response. |
Use Scenario: Controlled ramp-up of 6.6 kV, 2000 kW pump motors in water desalination plants. IC Role / Device Role / Timing Role: Series-connected thyristor stack per phase; gated with increasing conduction angle over 10–30 s to limit inrush current. Use Value: 960 A ITRMS rating sustains high RMS current during extended soft-start; pressure-contact construction ensures reliability across 10⁵+ switching cycles. |
Availability
T420N16TOFXPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, high-power rectifier systems, and static VAR compensators requiring stable component supply with long lifecycle support and traceable sourcing.
Supply support for T420N16TOFXPSA1 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 automotive ICs, with global manufacturing and R&D infrastructure.
This thyristor belongs to Infineon's "Netz-Thyristor" series, engineered specifically for high-reliability, high-current phase control in utility-scale and heavy industrial AC power conditioning applications.
FAQ
What is the required gate trigger current for reliable turn-on?
The maximum gate trigger current (IGT) is 200 mA at 25 °C and 12 V anode-cathode voltage. For guaranteed turn-on across temperature (-40 °C to +125 °C), a 300 mA pulse with 1 A/µs diG/dt and ≥20 µs duration is recommended. Gate non-trigger current remains ≤10 mA at maximum junction temperature, ensuring noise immunity.
How should the device be mounted for optimal thermal performance?
Mount using 5–10 kN clamping force on a flat, clean, thermally conductive surface with two-sided cooling (anode and cathode both interfaced to heatsinks). Thermal interface material must fill microscopic gaps without excessive thickness. RthCH is 0.0075 °C/W for two-sided mounting - exceeding this force risks pellet fracture; below 5 kN increases thermal resistance by >15%.
Can T420N16TOFXPSA1 replace older T420N1600 models?
Yes - T420N16TOFXPSA1 is the qualified successor to legacy T420N1600 devices, maintaining identical VDRM (1600 V), ITAVM (424 A), and TO-240AA package. Key improvements include enhanced dv/dt immunity (1000 V/µs vs. 800 V/µs) and tighter on-state voltage distribution (vT ≤ 2.1 V at 1500 A), verified per Infineon's AEC-qualified release documentation.
What is the maximum allowable case temperature during continuous operation?
The maximum allowable case temperature (TC) is 85 °C when delivering 424 A average on-state current (ITAVM), assuming two-sided cooling and sinusoidal conduction at 180°. At lower conduction angles (e.g., 90°), TC may rise to 100 °C while maintaining the same ITAVM due to increased RMS-to-average ratio - refer to Figure 6 in the datasheet for exact derating curves.
T420N16TOFXPSA1 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):
- 424 A
- Current - On State (It (RMS)) (Max):
- 750 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 200 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 7200A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
T420N16TOFXPSA1 FAQ
1.How can I place an order for T420N16TOFXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for T420N16TOFXPSA1 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 T420N16TOFXPSA1 reliable?
The price and inventory of T420N16TOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T420N16TOFXPSA1 is usually 5 days.
3.What payment methods are accepted for T420N16TOFXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T420N16TOFXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T420N16TOFXPSA1?
T420N16TOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T420N16TOFXPSA1 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 T420N16TOFXPSA1?
For technical support, including T420N16TOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T420N16TOFXPSA1 requirements.
6.How does Aetrix verify that T420N16TOFXPSA1 is sourced from the original manufacturer or authorized distributors?
All T420N16TOFXPSA1 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 T420N16TOFXPSA1 meets industry standards.
7.What is the process for return or replacement of T420N16TOFXPSA1?
All T420N16TOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T420N16TOFXPSA1, 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 T420N16TOFXPSA1 part is unused and in its original packaging.
Return procedure for T420N16TOFXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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