Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Thyristors > SCRs - Modules

Infineon Technologies TT425N16KOFXPSA1

Name: TT425N16KOFXPSA1
Brand: Infineon Technologies
SKU: TT425N16KOFXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TT425N16KOFXPSA1

Manufacturer:: Infineon Technologies

Category:: SCRs - Modules

Package:: Module

Datasheet:: TT425N16KOFXPSA1.pdf

Description:: THYR / DIODE MODULE DK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,068

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TT425N16KOFXPSA1 from Infineon Technologies is a press-pack, double-sided cooled phase-control thyristor module rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 471 A average on-state current at TC = 85 °C, and 14.5 kA non-repetitive surge current (ITSM). It features electrically insulated baseplate, pressure-contact silicon die construction, and is designed for high-reliability industrial power control in soft starters and static switches.

For engineers reviewing the TT425N16KOFXPSA1 datasheet, TT425N16KOFXPSA1 pinout, TT425N16KOFXPSA1 application, or TT425N16KOFXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.065 K/W per module), critical dv/dt rating (1000 V/µs), gate trigger current (≤250 mA), and crowbar-capable surge handling in UPS rectifier and battery charger systems.

Technical Context

This thyristor module implements a dual-arm, anti-parallel configuration with isolated gate terminals and a ceramic (AlN) insulated baseplate. Its pressure-contact die assembly enables high-current conduction without wire bonds, supporting DC to 50 Hz phase-controlled operation with 250 µs circuit commutated turn-off time (tq) at full-rated current.

The device operates across -40 °C to +125 °C junction temperature range and requires forced-air or liquid-cooled heatsinking due to its 0.065 K/W RthJC and 0.01–0.02 K/W RthCH thermal path. Gate drive must comply with 1.5 V maximum VGT and 250 mA IGT limits under 12 V anode-cathode bias.

Key Specifications

Parameter	Value and Actual Design Meaning
VDRM / VRRM	1600 V - Maximum repetitive blocking voltage per arm; defines usable AC line voltage headroom in 3-phase 6-pulse rectifiers up to 690 VAC systems.
ITAVM (TC = 85 °C)	471 A - Continuous average forward current per arm; determines steady-state power handling in soft starter duty cycles with 180° conduction angle.
ITSM (10 ms)	14500 A - Non-repetitive surge current capability; enables crowbar protection during short-circuit events in UPS and drive inverters.
RthJC	0.065 K/W - Junction-to-case thermal resistance per module; sets minimum heatsink requirement for maintaining Tvj ≤ 125 °C at full load.
(dv/dt)cr	1000 V/µs - Critical rate of rise of off-state voltage; ensures reliable blocking under fast transient overvoltages in motor drive snubber circuits.
VTO / rT	0.9 V / 0.35 mΩ - Threshold voltage and slope resistance; defines on-state conduction loss profile and forward voltage drop at 1500 A.
tq	250 µs - Circuit commutated turn-off time at Tvj max; constrains minimum commutation circuit inductance for reliable forced commutation in static switches.

Pinout & Package

TT425N16KOFXPSA1 uses a press-pack, double-sided cooled industrial standard package with electrically insulated AlN baseplate (19 mm creepage distance) and M1 (6 Nm) mechanical mounting. Terminal layout follows Infineon's TD/TT series standard: two main AC terminals (A1/K2 and A2/K1), two isolated gate terminals (G1/K1 and G2/K2), and baseplate as cathode reference.

Pin/Terminal	Circuit Role	Design Meaning
A1 / K2	Anode 1 / Cathode 2	Main current terminal for Arm 1; carries full forward current in half-wave or bridge configurations.
A2 / K1	Anode 2 / Cathode 1	Main current terminal for Arm 2; forms anti-parallel pair with A1/K2 for bidirectional AC control.
G1	Gate 1	Isolated gate control input for Arm 1; requires ≤250 mA trigger current and ≤1.5 V trigger voltage at 12 V anode bias.
G2	Gate 2	Isolated gate control input for Arm 2; galvanically separated from G1 to enable independent phase control per arm.
Baseplate	Cathode Reference / Thermal Path	Electrically insulated (3.6 kV RMS, 1 sec) AlN-ceramic surface; serves as primary heat extraction path and system ground reference point.

Key Features

Feature	Design Value
Pressure contact die assembly	Eliminates bond wires and solder layers, enabling >10⁶ cycle lifetime under high di/dt and thermal cycling in drive applications.
Electrically insulated baseplate (AlN)	Provides 3.6 kV RMS isolation and 19 mm creepage, allowing direct mounting to grounded heatsinks without additional insulation kits.
Advanced Medium Power Technology (AMPT)	Optimizes trade-off between conduction loss (0.9 V VTO) and switching robustness (1000 V/µs dv/dt rating) for 400–690 VAC industrial systems.
Double-sided cooling interface	Enables thermal resistance reduction by up to 40% vs. single-side cooled modules when used with matched cold plates on both sides.
Standard industrial footprint	Compatible with existing mounting hardware and busbar layouts for TD/TT-series replacements in legacy soft starter and rectifier cabinets.

Applications

Soft Starter

Rectifier for UPS

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 arm regulating AC voltage magnitude via firing angle adjustment from 0° to 180°.

Use Value: Delivers 471 A continuous current per arm with <250 µs turn-off time, enabling precise torque control and compatibility with standard 690 VAC motor windings.

Use Scenario: AC-to-DC conversion in uninterruptible power supplies requiring high surge tolerance during battery discharge or grid fault recovery.

IC Role / Device Role / Timing Role: Six-pulse bridge arm conducting 14.5 kA surge current during crowbar activation to protect downstream DC bus components.

Use Value: Withstands 14500 A ITSM and maintains 1600 V blocking capability after surge, eliminating need for parallel devices in 100 kVA+ UPS designs.

Battery Charger

Static Switch

Use Scenario: High-efficiency AC-fed charging of traction or telecom batteries using phase-controlled rectification with regenerative feedback capability.

IC Role / Device Role / Timing Role: Bidirectional current-handling arm in anti-parallel configuration enabling controlled rectification and inverter-mode energy return.

Use Value: 0.35 mΩ on-state resistance and 0.9 V threshold voltage minimize conduction losses at 400–800 A charge currents, improving system efficiency above 96%.

Use Scenario: Solid-state replacement of electromechanical contactors in critical power distribution, providing zero-crossing switching and arc-free operation.

IC Role / Device Role / Timing Role: Fast-turn-off thyristor pair enabling sub-millisecond transfer between utility and backup sources in data center PDU systems.

Use Value: 250 µs tq and 1000 V/µs dv/dt rating allow reliable commutation with compact LC snubbers, reducing footprint by 35% vs. legacy SCR stacks.

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
TT425N18KOFXPSA1	Higher VDRM/VRRM (1800 V); identical ITAVM, RthJC, and gate specs.	Better suited for 1000 VAC medium-voltage drives and offshore wind converter interfaces.	Select when system peak line voltage exceeds 720 VAC or transient overvoltage margin must exceed 2000 V.
TD425N16KOFXPSA1	Single-arm configuration; same VDRM, ITAVM, and thermal specs but no anti-parallel pairing.	Used in half-controlled rectifiers and single-quadrant power controllers where bidirectional conduction is unnecessary.	Choose for cost-sensitive, unidirectional applications like heater controls or DC motor field supplies.

Compared with TT425N16KOFXPSA1, the 1800 V variant extends voltage margin for harsh grid environments, while the TD425N16KOFXPSA1 reduces complexity and cost in unidirectional topologies-both retain identical thermal and gate drive behavior for seamless BOM migration.

Availability

TT425N16KOFXPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, battery chargers, and static switches requiring stable component supply in industrial automation, renewable energy converters, and critical infrastructure systems.

Supply support for TT425N16KOFXPSA1 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 microcontrollers, and security ICs, with global manufacturing and R&D centers.

This part belongs to Infineon's Thyristor Module product line, engineered for high-power industrial phase control applications demanding reliability under extreme thermal and electrical stress in mission-critical systems.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is not directly specified, but the device supports continuous operation up to Tvj = 125 °C. Using the RthJC value of 0.065 K/W and ITAVM = 471 A, the corresponding case temperature depends on heatsink design; typical derating curves show TC ≤ 85 °C at full ITAVM for 180° conduction with forced-air cooling.

Can TT425N16KOFXPSA1 be used in a single-phase full-wave rectifier?

Yes - the dual-arm anti-parallel structure allows use in single-phase full-wave rectifiers. Each arm handles one polarity of AC input, delivering full-wave DC output. Gate timing must be synchronized to alternate arms every half-cycle, and snubber networks must be sized for 1600 V blocking and 14.5 kA surge capability.

Is the baseplate electrically isolated from the main terminals?

Yes - the baseplate is electrically insulated using aluminum nitride (AlN) ceramic with 3.6 kV RMS isolation (1 second test) and 3.0 kV RMS (1 minute test). This allows direct mounting to grounded heatsinks without external insulation, simplifying thermal design and reducing system EMI.

What gate drive voltage and current are required for reliable triggering?

Reliable triggering requires ≤250 mA gate current (IGT) and ≤1.5 V gate voltage (VGT) at 12 V anode-cathode bias and 25 °C junction temperature. Gate pulse width should exceed 20 µs, and peak gate power must stay within PGM limits (e.g., 100 W for 0.5 ms pulses) to avoid gate damage.

TT425N16KOFXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TT

Package/Case:: Module

Packaging:: Tray

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:: 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

TT425N16KOFXPSA1 FAQ

1.How can I place an order for TT425N16KOFXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TT425N16KOFXPSA1 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 TT425N16KOFXPSA1 reliable?

The price and inventory of TT425N16KOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TT425N16KOFXPSA1 is usually 5 days.

3.What payment methods are accepted for TT425N16KOFXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TT425N16KOFXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TT425N16KOFXPSA1?

TT425N16KOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TT425N16KOFXPSA1 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 TT425N16KOFXPSA1?

For technical support, including TT425N16KOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TT425N16KOFXPSA1 requirements.

6.How does Aetrix verify that TT425N16KOFXPSA1 is sourced from the original manufacturer or authorized distributors?

All TT425N16KOFXPSA1 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 TT425N16KOFXPSA1 meets industry standards.

7.What is the process for return or replacement of TT425N16KOFXPSA1?

All TT425N16KOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TT425N16KOFXPSA1, 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 TT425N16KOFXPSA1 part is unused and in its original packaging.

Return procedure for TT425N16KOFXPSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…