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Infineon Technologies TZ425N14KOFHPSA1
- Part No.:
- TZ425N14KOFHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TZ425N14KOFHPSA1.pdf
- Description:
- SCR MODULE 1.4KV 800A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:5,679
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Product details
Overview
TZ425N14KOFHPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching and rectification in industrial drive systems. It delivers 425 A average on-state current at TC = 85°C, supports repetitive peak voltages up to 1400 V (VDRM/VRRM), and withstands 14,500 A non-repetitive surge current (ITSM) - enabling robust operation in soft starters and static bypass switches.
For engineers reviewing the TZ425N14KOFHPSA1 datasheet, TZ425N14KOFHPSA1 pinout, TZ425N14KOFHPSA1 application, or TZ425N14KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.078 K/W), pressure-contact construction for reliability, electrically insulated base plate, and gate trigger parameters (IGT ≤ 250 mA, VGT ≤ 1.5 V) critical for gate drive design in high-current phase control.
Technical Context
This thyristor module uses pressure-contact die attachment to ensure stable thermal and electrical performance under high di/dt (120 A/µs) and dv/dt (1000 V/µs) stress. Its AlN-based internal insulation enables 3.0 kV RMS isolation voltage and supports operation up to 125°C junction temperature.
The device operates in natural or forced-cooled configurations with documented transient thermal impedance (ZthJC) profiles for sinusoidal and rectangular current waveforms. Gate-controlled delay time is specified at ≤4 µs, supporting precise phase-angle control in power controllers and crowbar circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1400 V - Maximum repetitive blocking voltage per arm; defines maximum AC line voltage compatibility (e.g., 690 VAC 3-phase systems) |
| ITAVM (TC = 85°C) | 425 A - Continuous average on-state current rating; sets steady-state power handling capability with heatsink cooling |
| ITSM (10 ms) | 14500 A - Non-repetitive surge current capacity; determines short-circuit withstand in motor starter fault conditions |
| VTO / rT | 0.9 V / 0.3 mΩ - Threshold voltage and slope resistance; defines conduction loss profile and forward voltage drop at high load |
| RthJC | 0.078 K/W - Junction-to-case thermal resistance; directly impacts required heatsink thermal design for safe junction temperature |
| (diT/dt)cr | 120 A/µs - Critical rate of rise of on-state current; limits commutation speed and snubber requirements |
| (dvD/dt)cr | 1000 V/µs - Critical rate of rise of off-state voltage; determines immunity to false triggering from voltage transients |
Pinout & Package
Package: Industrial-standard pressure-contact thyristor module with electrically insulated AlN base plate, 50 mm base plate dimension, and M1 (5 Nm) mechanical mounting torque specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current terminal (high-side) | Carries full load current during conduction; requires low-inductance busbar connection |
| Cathode (K) | Main current terminal (low-side) | Completes main current path; thermally coupled to heatsink via insulated base plate |
| Gate (G) | Control input | Triggers conduction; requires ≥1 A pulse with diG/dt ≥1 A/µs and ≤4 µs delay for reliable turn-on |
| Cathode (K) – Base Plate | Thermal & electrical reference | Electrically isolated (3.0 kV RMS) but thermally conductive; serves as heatsink interface |
Key Features
| Feature | Design Value |
|---|---|
| Pressure contact technology | Eliminates wire bonds and solder layers, improving thermal cycling endurance and current sharing stability across parallel devices |
| Electrically insulated base plate | AlN ceramic substrate provides 3.0 kV RMS isolation, enabling direct mounting on grounded heatsinks without additional insulation |
| High di/dt capability | 120 A/µs critical rate ensures reliable commutation in fast-switching applications like static switches and crowbar protection |
| Low conduction loss | VTO = 0.9 V + rT = 0.3 mΩ yields <1.5 V forward drop at 1500 A, reducing thermal load in high-current rectifier bridges |
| Gate trigger robustness | IGT ≤ 250 mA and VGT ≤ 1.5 V allow compatibility with standard opto-triac or pulse transformer gate drivers |
Applications
| Soft Starter | Rectifier for Drives |
|---|---|
Use Scenario: Gradual ramp-up of induction motor voltage during startup to limit inrush current and mechanical stress. IC Role / Device Role / Timing Role: Phase-controlled AC switch regulating conduction angle per half-cycle to modulate RMS output voltage. Use Value: Enables smooth torque delivery and extends motor life by avoiding abrupt current surges; leverages 14500 A ITSM for stall condition tolerance. | Use Scenario: Three-phase controlled rectification in variable-speed drive front-ends for DC bus generation. IC Role / Device Role / Timing Role: Bidirectional AC line switch operating in anti-parallel configuration to shape input current waveform. Use Value: Supports regenerative braking and power factor correction via precise firing angle control; benefits from 0.078 K/W RthJC for thermal management under continuous load. |
| Crowbar Protection | Static Bypass Switch |
Use Scenario: Fast short-circuit activation across sensitive downstream loads (e.g., UPS inverters) during overvoltage events. IC Role / Device Role / Timing Role: High-current crowbar switch triggered by overvoltage detection circuitry to divert fault energy. Use Value: Withstands 14500 A surge for 10 ms and recovers after fault clearance; pressure-contact construction ensures repeatable performance across multiple fault events. | Use Scenario: Redundant AC path in critical power systems, allowing maintenance of upstream supply while isolating failed modules. IC Role / Device Role / Timing Role: Zero-voltage switching-capable static switch replacing mechanical contactors in high-reliability infrastructure. Use Value: Eliminates arcing and wear; 1000 V/µs dv/dt immunity prevents spurious turn-on during system transients; insulated base plate simplifies isolation design. |
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 |
|---|---|---|---|
| TT140N16KOFHPSA1 | Higher VDRM/VRRM (1600 V), lower ITAVM (320 A at TC = 85°C), same package and insulation | Better suited for 1000 VAC distribution systems; reduced current rating limits use in high-torque motor starters | Select when higher blocking voltage is prioritized over current capacity, e.g., medium-voltage grid-tied converters |
| TZ500N12KOFHPSA1 | Lower VDRM/VRRM (1200 V), higher ITAVM (500 A at TC = 85°C), identical thermal and gate specs | Optimized for high-current, lower-voltage applications such as battery charger rectifiers and welder controls | Choose where 425 A is insufficient but 1400 V blocking is excessive, e.g., 400 VAC industrial machinery |
Compared with TT140N16KOFHPSA1 and TZ500N12KOFHPSA1, TZ425N14KOFHPSA1 balances mid-range voltage (1400 V) and current (425 A) ratings, making it optimal for 690 VAC drive systems requiring both robust surge margin and efficient thermal dissipation.
Availability
TZ425N14KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, drive rectifiers, crowbar protection circuits, and static bypass switches requiring stable component supply across industrial OEM production cycles.
Supply support for TZ425N14KOFHPSA1 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 applications.
This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized phase-angle control in industrial motor drives, power conditioning, and fault-protection systems.
FAQ
What is the maximum allowable case temperature for continuous operation?
The maximum allowable case temperature (TC) is not explicitly defined as a standalone limit; instead, the device is rated for ITAVM = 425 A at TC = 85°C. Operation above this temperature reduces current capability per derating curves in the datasheet, with absolute maximum junction temperature (Tvj max) fixed at 125°C. Thermal design must ensure RthJC + RthCH + RthHA keeps Tvj ≤ 125°C under load.
Is external gate resistor required for reliable triggering?
Yes - a series gate resistor is required to limit peak gate current and control diG/dt. The datasheet specifies iGM = 1 A and diG/dt = 1 A/µs for reliable turn-on; typical designs use 10–22 Ω resistors with pulse transformers or optocouplers to meet these conditions while preventing gate junction overstress.
Can TZ425N14KOFHPSA1 be used in parallel configurations?
Yes - its pressure-contact construction and matched dynamic parameters (VTO, rT, tq) support parallel operation. However, strict layout symmetry, matched gate drive timing (<1 µs skew), and current-sharing inductors are mandatory. Derating to ≤80% of total rated current per module is recommended to ensure thermal and dynamic balance.
What is the creepage distance and why does it matter for PCB layout?
The creepage distance is 15 mm between main terminals (A/K) and gate (G), as specified in the mechanical data. This minimum spacing prevents surface tracking under humid or contaminated conditions and must be maintained in heatsink mounting and terminal wiring - especially critical in high-altitude or pollution degree 3 environments per IEC 60664-1.
TZ425N14KOFHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Structure:
- Single
- Number of SCRs, Diodes:
- 1 SCR
- Voltage - Off State:
- 1.4 kV
- Current - On State (It (AV)) (Max):
- 510 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
TZ425N14KOFHPSA1 FAQ
1.How can I place an order for TZ425N14KOFHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TZ425N14KOFHPSA1 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 TZ425N14KOFHPSA1 reliable?
The price and inventory of TZ425N14KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZ425N14KOFHPSA1 is usually 5 days.
3.What payment methods are accepted for TZ425N14KOFHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZ425N14KOFHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZ425N14KOFHPSA1?
TZ425N14KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZ425N14KOFHPSA1 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 TZ425N14KOFHPSA1?
For technical support, including TZ425N14KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZ425N14KOFHPSA1 requirements.
6.How does Aetrix verify that TZ425N14KOFHPSA1 is sourced from the original manufacturer or authorized distributors?
All TZ425N14KOFHPSA1 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 TZ425N14KOFHPSA1 meets industry standards.
7.What is the process for return or replacement of TZ425N14KOFHPSA1?
All TZ425N14KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TZ425N14KOFHPSA1, 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 TZ425N14KOFHPSA1 part is unused and in its original packaging.
Return procedure for TZ425N14KOFHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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