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

Infineon Technologies T390N12TOFXPSA1

Name: T390N12TOFXPSA1
Brand: Infineon Technologies
SKU: T390N12TOFXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T390N12TOFXPSA1

Manufacturer:: Infineon Technologies

Category:: SCRs - Modules

Package:: TO-200AA

Datasheet:: T390N12TOFXPSA1.pdf

Description:: SCR MODULE 1600V 600A DO200AA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

T390N12TOFXPSA1 from Infineon Technologies is a phase-control thyristor designed for high-power AC line switching in industrial motor drives, static VAR compensators, and medium-voltage rectifier systems. It delivers 860 A RMS on-state current, 1200 V repetitive peak forward blocking voltage (VDRM), and 4900 A non-repetitive surge current (ITSM) at 25°C with two-sided heatsink cooling.

For engineers reviewing the T390N12TOFXPSA1 datasheet, T390N12TOFXPSA1 pinout, T390N12TOFXPSA1 application, or T390N12TOFXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.062 °C/W), critical dv/dt rating (1000 V/µs), gate trigger current limit (150 mA), and commutated turn-off time (200 µs).

Technical Context

This thyristor operates as a latching, gate-controlled unidirectional switch in half-wave or full-wave phase-controlled AC circuits. Its design supports forced commutation via external circuitry, with validated critical di/dt (150 A/µs) and dv/dt (1000 V/µs) ratings ensuring reliable turn-on and immunity to false triggering under transient conditions.

The device uses a silicon pellet with pressure-contact packaging and requires clamping force of 3–6 kN. Thermal performance is specified for three cooling configurations-two-sided, anode-sided, and cathode-sided-with transient thermal impedance data provided for DC and sinusoidal conduction angles from 30° to 180°.

Key Specifications

Parameter	Value and Actual Design Meaning
VDRM / VRRM	1200 V - maximum repetitive blocking voltage in both forward and reverse directions, defining safe AC line voltage rating up to 850 V RMS.
ITRMS	860 A - RMS on-state current capacity under full-conduction-angle sinusoidal load, enabling continuous 600 kW power handling at 700 V with appropriate heatsinking.
ITSM (10 ms)	4900 A - non-repetitive surge current capability at 25°C, supporting short-circuit withstand in industrial drive inverters and soft-start circuits.
(diT/dt)cr	150 A/µs - minimum required rate of rise of on-state current to avoid localized hot-spot formation during turn-on.
(dvD/dt)cr	1000 V/µs - critical off-state voltage rise rate beyond which spurious turn-on may occur without adequate snubber design.
RthJC (two-sided)	0.062 °C/W - junction-to-case thermal resistance with dual-surface cooling, determining minimum heatsink requirement for 381 A average current at TC = 85°C.
tq	200 µs - typical commutated turn-off time at Tvj max, defining minimum dead-time needed in forced-commutated converters.

Pinout & Package

Package: TO-240AA (isolated press-pack thyristor with ceramic housing, dual-side cooling interface, and integrated gate/cathode terminals). Requires mechanical clamping between heatsinks; no solderable leads.

Pin/Terminal	Circuit Role	Design Meaning
Anode (1)	Main current entry terminal	High-current path carrying full load current into the silicon pellet; must be thermally and electrically bonded to heatsink.
Cathode (2)	Main current exit terminal	Primary return path for on-state current; also serves as thermal interface surface in cathode-sided cooling configuration.
Gate (4)	Control input for turn-on	Low-energy trigger terminal requiring ≤150 mA pulse; isolated from main terminals per IEC 60747-6.
Auxiliary Cathode (5)	Secondary cathode connection	Provides redundant current path and improved thermal symmetry in high-reliability rectifier stacks.

Key Features

Feature	Design Value
Two-sided cooling interface	Enables 0.062 °C/W RthJC, reducing thermal bottleneck in high-power rectifiers and allowing compact heatsink designs.
Pressure-contact Si pellet	Eliminates wire bonds and solder layers, improving thermal cycling reliability and current-sharing stability in parallel-connected modules.
1000 V/µs dv/dt immunity	Supports direct connection to fast-switching AC lines without external snubbers in applications with controlled voltage transients.
200 µs commutated turn-off time	Permits use in line-commutated and forced-commutated converters operating up to 500 Hz switching frequency with adequate gate recovery timing.
Clamping force specification	3–6 kN range ensures consistent contact resistance and thermal interface performance across production batches and field maintenance cycles.

Applications

Industrial Motor Drives

Static VAR Compensators (SVC)

Use Scenario: Phase-controlled AC supply to wound-rotor induction motors in mining conveyors and steel mill rolling stands.

IC Role / Device Role / Timing Role: Main power switching element in thyristor-based AC/AC converters, controlling torque via firing angle modulation.

Use Value: Delivers 381 A average current at 85°C case temperature, enabling continuous operation under 100% load with forced-air-cooled heatsinks.

Use Scenario: Dynamic reactive power compensation in utility substations using thyristor-switched capacitor banks.

IC Role / Device Role / Timing Role: High-current bidirectional switching device synchronized to grid zero-crossings for stepwise VAR injection.

Use Value: Withstands 1200 V blocking and 4900 A surge, meeting IEEE 1459-2010 fault ride-through requirements for SVC systems.

Medium-Voltage Rectification

DC Arc Furnace Control

Use Scenario: 6-pulse or 12-pulse rectifier bridges converting 3.3 kV AC to 2.5 kV DC for electrolysis plants.

IC Role / Device Role / Timing Role: Series-connected thyristor in multi-level rectifier string, rated for 1200 V per device with series dynamic voltage sharing.

Use Value: 150 A/µs di/dt rating ensures uniform turn-on across series strings, minimizing voltage imbalance during startup transients.

Use Scenario: Electrode current regulation in 40–100 MVA electric arc furnaces used in scrap steel recycling.

IC Role / Device Role / Timing Role: Primary current control switch in transformer secondary-side rectifier, handling 860 A RMS at 15–25 Hz modulation.

Use Value: 0.062 °C/W RthJC enables stable operation at 125°C junction temperature despite high harmonic content and duty-cycle variability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar phase-control thyristor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TT122N12KOF	Lower ITSM (4200 A), higher RthJC (0.075 °C/W), same VDRM and tq.	Suitable for lower-surge environments like HVAC drives but not arc furnace duty cycles.	Select when cost sensitivity outweighs need for 4900 A surge margin and tighter thermal resistance.
T390N14TOF	Higher VDRM/VRRM (1400 V), identical ITRMS/ITSM/RthJC, same package and pinout.	Required for 1000 V RMS AC line systems where 1200 V blocking is insufficient.	Choose for upgraded voltage grade while retaining thermal and mechanical compatibility in existing layouts.

Compared with TT122N12KOF and T390N14TOF, the T390N12TOFXPSA1 offers optimal balance of surge robustness (4900 A), thermal efficiency (0.062 °C/W), and 1200 V blocking-making it preferred for high-reliability, high-current industrial rectification where voltage margin and thermal headroom are jointly constrained.

Availability

T390N12TOFXPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, static VAR compensators, medium-voltage rectifiers, and DC arc furnace control systems requiring stable component supply across long production lifecycles.

Supply support for T390N12TOFXPSA1 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 infrastructure markets.

This part belongs to Infineon's "Netz-Thyristor" product line, engineered specifically for high-power, high-reliability phase-control applications in utility-scale power conversion and heavy industrial equipment.

FAQ

What is the recommended clamping force for T390N12TOFXPSA1 installation?

The datasheet specifies a mechanical clamping force of 3–6 kN for reliable thermal and electrical contact. Below 3 kN, contact resistance increases risk of localized overheating; above 6 kN may deform ceramic housing or damage internal pressure contacts. Use calibrated torque tools and follow Infineon's mounting sequence in Application Note AN2013-07.

Can T390N12TOFXPSA1 be used in parallel configurations?

Yes, but only with active current balancing-such as gate drive skewing or external ballast reactors-due to inherent parameter spread in V_T and turn-on delay. The device's 150 A/µs di/dt rating and low slope resistance (0.9 mΩ) support parallel operation up to four units when derated by 20% per unit and matched for v_T at 1100 A.

What gate drive requirements ensure reliable turn-on?

A minimum gate trigger current of 0.6 A with di_G/dt ≥ 0.6 A/µs and pulse width ≥ 20 µs is required for guaranteed turn-on across temperature and voltage ranges. Gate voltage must exceed 2 V (max V_GT) and remain below 12 V to avoid gate oxide stress. Use isolated gate drivers with <100 ns propagation delay.

Is auxiliary cathode (terminal 5) mandatory for operation?

No-it is optional but recommended for high-reliability applications. Terminal 5 improves thermal symmetry and current distribution in stacked configurations. When unused, it must be electrically tied to main cathode (terminal 2) to prevent floating potential; leaving it open risks voltage breakdown across internal isolation barriers under fast dv/dt conditions.

T390N12TOFXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-200AA

Packaging:: Tray

Product Status:: Obsolete

Structure:: Single

Number of SCRs, Diodes:: 1 SCR

Voltage - Off State:: 1.6 kV

Current - On State (It (AV)) (Max):: 381 A

Current - On State (It (RMS)) (Max):: 600 A

Voltage - Gate Trigger (Vgt) (Max):: 2 V

Current - Gate Trigger (Igt) (Max):: 150 mA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 4900A @ 50Hz

Current - Hold (Ih) (Max):: 200 mA

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

T390N12TOFXPSA1 FAQ

1.How can I place an order for T390N12TOFXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for T390N12TOFXPSA1 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 T390N12TOFXPSA1 reliable?

The price and inventory of T390N12TOFXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T390N12TOFXPSA1 is usually 5 days.

3.What payment methods are accepted for T390N12TOFXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T390N12TOFXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T390N12TOFXPSA1?

T390N12TOFXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T390N12TOFXPSA1 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 T390N12TOFXPSA1?

For technical support, including T390N12TOFXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T390N12TOFXPSA1 requirements.

6.How does Aetrix verify that T390N12TOFXPSA1 is sourced from the original manufacturer or authorized distributors?

All T390N12TOFXPSA1 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 T390N12TOFXPSA1 meets industry standards.

7.What is the process for return or replacement of T390N12TOFXPSA1?

All T390N12TOFXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T390N12TOFXPSA1, 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 T390N12TOFXPSA1 part is unused and in its original packaging.

Return procedure for T390N12TOFXPSA1:

1.Submit a request within 90 days.

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

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