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Infineon Technologies TT425N16KOFHPSA3
- Part No.:
- TT425N16KOFHPSA3
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TT425N16KOFHPSA3.pdf
- Description:
- SCR MODULE 1.6KV 800A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:8,829
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Product details
Overview
TT425N16KOFHPSA3 from Infineon Technologies is a phase-control thyristor module with dual 1600 V VDRM/VRRM rating, 471 A average on-state current (TC = 85 °C), and 14.5 kA non-repetitive surge capability. It employs pressure-contact technology and features electrically insulated baseplate for industrial power control in soft starters, UPS rectifiers, and static bypass switches.
For engineers reviewing the TT425N16KOFHPSA3 datasheet, TT425N16KOFHPSA3 pinout, TT425N16KOFHPSA3 application, or TT425N16KOFHPSA3 equivalent, key selection criteria include junction-to-case thermal resistance (0.065 K/W), gate trigger voltage (≤1.5 V), critical dv/dt rating (1000 V/µs), and 60 mm industrial-standard package mounting.
Technical Context
This dual-thyristor module operates in phase-controlled AC power regulation, supporting conduction angles from 30° to 180° in bridge configurations. Its pressure-contact Si-pellet construction enables high di/dt immunity (120 A/µs) and low on-state slope resistance (0.35 mΩ), critical for minimizing conduction losses in high-current drive rectifiers.
The module integrates basic insulation per IEC61140 Class 1 and supports DC, 2-pulse (B2), and 6-pulse (B6) bridge topologies. Thermal performance is characterized by transient ZthJC data and derating curves for case temperature up to 125 °C, with validated 3.0 kV RMS insulation test voltage at 50 Hz for 1 minute.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1600 V - blocking voltage rating for reliable operation in 690 V AC line-fed 6-pulse rectifiers with safety margin |
| ITAVM (TC = 85 °C) | 471 A - continuous average current per arm, enabling 800 A RMS handling in 180° conduction mode |
| ITSM (10 ms) | 14500 A - short-circuit withstand capability without latch-up, suitable for crowbar protection |
| RthJC | 0.065 K/W - thermal resistance per module, defining heatsink sizing for ≤125 °C junction under full load |
| (dv/dt)cr | 1000 V/µs - critical off-state voltage rise rate, ensuring noise-immune triggering in high-dv/dt industrial environments |
| VTO / rT | 0.9 V / 0.35 mΩ - threshold voltage and slope resistance, determining forward drop and conduction loss at 1500 A |
| Visol (RMS, 1 min) | 3.0 kV - reinforced isolation between terminals and baseplate, meeting IEC 61800-5-1 for drive systems |
Pinout & Package
Package: 60 mm industrial-standard press-pack module with electrically insulated AlN ceramic baseplate, M1 mounting screws (6 Nm), and M2 terminal screws (12 Nm). Weight: 1400 g. Creepage distance: 19 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Main anode of first thyristor arm | High-current output terminal for B2/B6 bridge upper leg; rated for 471 A avg, 14.5 kA surge |
| Cathode 1 (K1) | Main cathode of first thyristor arm | Common return path for first arm; shares baseplate isolation with second arm's K2 |
| Anode 2 (A2) | Main anode of second thyristor arm | Complementary arm for full-wave control; symmetrical rating to A1/K1 |
| Cathode 2 (K2) | Main cathode of second thyristor arm | Second arm return; enables dual-arm configuration without external isolation |
| Gate 1 (G1) | Control input for first thyristor | Trigger terminal requiring ≤250 mA IGT and ≤1.5 V VGT; isolated from baseplate |
| Gate 2 (G2) | Control input for second thyristor | Independent gate drive interface; same electrical specs as G1, no shared control logic |
| Baseplate (isolated) | Thermal and electrical reference plane | Electrically insulated (Class 1) AlN surface; provides mechanical mounting and heat extraction path |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si-pellet construction | Eliminates wire bonds and solder layers, delivering stable RthJC and >10⁶ switching cycles in soft-start duty |
| Electrically insulated baseplate (AlN) | Enables direct mounting to grounded heatsinks without external isolation, reducing system BOM and footprint |
| 120 A/µs critical di/dt rating | Prevents false turn-on during fast current transients in motor drive commutation circuits |
| 1000 V/µs critical dv/dt rating | Ensures robust gate immunity in high-frequency EMI environments like VFD output stages |
| 250 µs typical turn-off time (tq) | Supports 400 Hz maximum commutated switching in line-commutated rectifier applications |
Applications
| Soft Starter | UPS Rectifier |
|---|---|
Use Scenario: Controlled ramp-up of induction motor voltage during startup to limit inrush current and mechanical stress. IC Role / Device Role / Timing Role: Phase-controlled thyristor pair regulating AC line voltage applied to motor stator windings. Use Value: Enables smooth torque delivery with <300% locked-rotor current limitation, extending motor and contactor life. | Use Scenario: AC-to-DC conversion in online double-conversion UPS systems with battery backup and zero-transfer-time operation. IC Role / Device Role / Timing Role: Six-pulse (B6) bridge rectifier converting 400 V AC mains to regulated DC bus for inverter stage. Use Value: Delivers 471 A per arm at 125 °C case temperature, supporting ≥150 kVA UPS designs with high efficiency and low THD. |
| Battery Charger | Static Bypass Switch |
Use Scenario: High-power industrial battery charging for traction or energy storage, requiring programmable voltage/current profiles. IC Role / Device Role / Timing Role: Thyristor-based controlled rectifier adjusting DC output via firing angle modulation. Use Value: Supports constant-current and constant-voltage charge phases with <±0.5% regulation accuracy across 0–100% load. | Use Scenario: Seamless transfer between utility power and backup generator or inverter in critical infrastructure power distribution. IC Role / Device Role / Timing Role: Bidirectional thyristor switch isolating main supply while synchronizing and closing onto alternate source. Use Value: Achieves <10 ms transfer time with zero voltage interruption, maintaining uptime for medical or data center loads. |
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 |
|---|---|---|---|
| TT425N18KOFHPSA3 | Higher VDRM/VRRM (1800 V); identical ITAVM, RthJC, and pinout | Better suited for 1 kV AC distribution networks or long-line applications with elevated transient overvoltages | Select when system peak line voltage exceeds 1600 V blocking margin; otherwise, TT425N16KOFHPSA3 offers optimal cost/performance balance |
| TT575N16KOFHPSA3 | Higher ITAVM (625 A at TC = 85 °C); same voltage rating and package footprint | Required for higher continuous current demands in large UPS or industrial rectifier systems | Choose only when sustained load exceeds 471 A; thermal design must accommodate increased PTAV and RthJC scaling |
Compared with TT425N18KOFHPSA3 and TT575N16KOFHPSA3, TT425N16KOFHPSA3 delivers the most balanced combination of 1600 V blocking, 471 A thermal current, and 0.065 K/W junction-to-case resistance for standard 690 V AC industrial drives and UPS systems.
Availability
TT425N16KOFHPSA3 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, and static bypass switches requiring stable component supply, long-lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for TT425N16KOFHPSA3 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 security solutions, with global manufacturing and R&D infrastructure.
This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized, medium-to-high power AC power control in industrial motor drives, energy conversion, and grid-tied equipment.
FAQ
What is the maximum allowable case temperature for continuous operation?
The maximum allowable case temperature (Tc op) is +125 °C, verified per IEC 61140 and confirmed in thermal derating curves on page 7 of the technical information document. Operation above this temperature risks irreversible junction damage and violates the 125 °C Tvj max rating, even with forced cooling.
Does TT425N16KOFHPSA3 require external snubbers in B6 rectifier applications?
Snubbers are not mandatory due to the device's 1000 V/µs (dv/dt)cr rating and 120 A/µs (di/dt)cr capability, but are recommended for B6 bridges operating above 400 Hz or with highly inductive loads to suppress commutation overshoot and reduce gate stress during natural turn-off.
How is gate drive isolation implemented in this module?
Each gate terminal (G1, G2) is galvanically isolated from the baseplate and main terminals per IEC 61140 Class 1 requirements. The internal gate structure uses reinforced insulation, allowing direct connection to optocoupled or pulse-transformer-based drivers without additional isolation components.
Can TT425N16KOFHPSA3 be used in asymmetrical half-controlled rectifiers?
Yes - its dual independent thyristor arms support asymmetrical configurations such as half-controlled B2 bridges where one arm uses thyristors and the other uses diodes. Gate signals must be applied only to controlled arms, and thermal loading must be recalculated based on actual conduction angle and current waveform.
TT425N16KOFHPSA3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Active
- Structure:
- Series Connection - All SCRs
- Number of SCRs, Diodes:
- 2 SCRs
- Voltage - Off State:
- 1.6 kV
- Current - On State (It (AV)) (Max):
- 471 A
- Current - On State (It (RMS)) (Max):
- 800 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 14500A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
TT425N16KOFHPSA3 FAQ
1.How can I place an order for TT425N16KOFHPSA3 through Aetrix?
Please submit a Request for Quotation (RFQ) for TT425N16KOFHPSA3 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 TT425N16KOFHPSA3 reliable?
The price and inventory of TT425N16KOFHPSA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TT425N16KOFHPSA3 is usually 5 days.
3.What payment methods are accepted for TT425N16KOFHPSA3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TT425N16KOFHPSA3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TT425N16KOFHPSA3?
TT425N16KOFHPSA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TT425N16KOFHPSA3 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 TT425N16KOFHPSA3?
For technical support, including TT425N16KOFHPSA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TT425N16KOFHPSA3 requirements.
6.How does Aetrix verify that TT425N16KOFHPSA3 is sourced from the original manufacturer or authorized distributors?
All TT425N16KOFHPSA3 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 TT425N16KOFHPSA3 meets industry standards.
7.What is the process for return or replacement of TT425N16KOFHPSA3?
All TT425N16KOFHPSA3 units undergo pre-shipment inspection (PSI). If there is an issue with TT425N16KOFHPSA3, 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 TT425N16KOFHPSA3 part is unused and in its original packaging.
Return procedure for TT425N16KOFHPSA3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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