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

Infineon Technologies TD310N26KOFHPSA1

Name: TD310N26KOFHPSA1
Brand: Infineon Technologies
SKU: TD310N26KOFHPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TD310N26KOFHPSA1

Manufacturer:: Infineon Technologies

Category:: SCRs - Modules

Package:: Module

Datasheet:: TD310N26KOFHPSA1.pdf

Description:: SCR MODULE 2600V 700A MODULE

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TD310N26KOFHPSA1 from Infineon Technologies is a phase-control thyristor module rated for 2600 V repetitive peak off-state voltage (V_DRM/V_RRM), 310 A average on-state current (I_TAVM) at T_C = 85 °C, and 10 kA non-repetitive surge current (I_TSM). It features dual thyristor arms in press-pack construction with AlN isolation, designed for high-power AC line-commutated rectification in industrial DC drives and medium-voltage motor control systems.

For engineers reviewing the TD310N26KOFHPSA1 datasheet, TD310N26KOFHPSA1 pinout, TD310N26KOFHPSA1 application, or TD310N26KOFHPSA1 equivalent, key selection criteria include verified junction-to-case thermal resistance (0.0373 °C/W per arm), critical dv/dt rating (1000 V/µs), gate trigger current limit (250 mA), and forced-cooling-compatible mechanical mounting torque (12 Nm for M2 terminals).

Technical Context

This dual-arm thyristor module operates in line-commutated mode with natural or forced cooling, supporting B2 (two-pulse) and B6 (six-pulse) bridge configurations. Its 125 °C maximum junction temperature, 300 µs typical turn-off time (t_q), and 120 A/µs critical di/dt ensure reliable commutation under inductive loads in 50/60 Hz AC mains applications.

The module uses silicon pellets with pressure-contact metallization and aluminum nitride (AlN) internal insulation, enabling high transient thermal impedance stability. Gate control requires ≤1.5 V trigger voltage and delivers latching current up to 1500 mA, supporting robust firing in noisy industrial environments with minimal external gate drive complexity.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM/V_RRM	2600 V - Maximum repetitive blocking voltage per arm, defining usable AC line voltage range up to 1.73 kV RMS in B6 configuration.
I_TAVM	310 A at T_C = 85 °C - Continuous DC output current capability per arm under natural cooling with specified heatsink.
I_TSM	10 kA (10 ms) - Short-circuit withstand level enabling coordination with upstream fuses in industrial power converters.
R_thJC	0.0373 °C/W per arm - Thermal resistance from junction to case, used to calculate max allowable power dissipation under thermal design constraints.
(dv/dt)_cr	1000 V/µs - Minimum required snubber dv/dt immunity to prevent false triggering during voltage transients in AC phase control.
v_T	2.22 V at 1300 A - On-state voltage drop determining conduction loss and thermal loading at full load current.
t_q	300 µs typical - Circuit commutated turn-off time, setting minimum commutation interval and limiting maximum operating frequency.

Pinout & Package

TD310N26KOFHPSA1 is housed in a press-pack module with isolated copper baseplate and dual thyristor arms. Electrical connections are made via M2 screw terminals (12 Nm torque) for main anode/cathode paths and DIN 46244 A 2.8 × 0.8 mm flat control terminals for gate and cathode return.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1 (A1)	Main current input for Arm 1	High-current path carrying forward-conducting current in B2/B6 bridge topologies; requires low-inductance busbar connection.
Cathode 1 (K1)	Main current return for Arm 1	Shared cathode node for dual-arm configuration; electrically isolated from baseplate via AlN ceramic.
Anode 2 (A2)	Main current input for Arm 2	Second arm enables full-bridge operation; symmetrical layout supports balanced thermal distribution across heatsink surface.
Cathode 2 (K2)	Main current return for Arm 2	Independent cathode terminal allows separate gate drive referencing and independent arm control in asymmetrical circuits.
G1, K1	Gate control for Arm 1	Low-energy gate interface requiring ≤250 mA trigger current; isolated from power terminals by internal creepage distance of 19 mm.
G2, K2	Gate control for Arm 2	Separate gate inputs enable independent firing timing for phase-shifted control in multi-pulse rectifiers.

Key Features

Feature	Design Value
Press-pack Si pellet construction	Eliminates wire bonds and solder layers, delivering stable R_thJC over lifetime and enabling >10⁶ thermal cycles in high-dI/dt applications.
AlN internal isolation	Provides 3.6 kV RMS insulation test voltage and maintains dielectric integrity at 125 °C junction temperature.
Dual-arm topology	Supports both B2 and B6 bridge configurations without external paralleling, reducing system footprint and interconnect losses.
19 mm creepage distance	Meets IEC 61800-5-1 requirements for reinforced insulation in 1000 V AC systems with pollution degree 3.
12 Nm M2 terminal torque	Ensures stable contact resistance <0.1 mΩ under vibration and thermal cycling, minimizing localized heating at power terminals.

Applications

Industrial DC Drives

Medium-Voltage Rectifiers

Use Scenario: 6-pulse thyristor rectifier feeding 500 kW DC motor in steel mill rolling stand.

IC Role / Device Role / Timing Role: Main power switching element in B6 bridge; conducts for 120° per half-cycle with gate firing synchronized to AC zero-crossing.

Use Value: 2600 V blocking rating enables direct connection to 3.3 kV AC supply without series stacking; 310 A I_TAVM supports continuous 400 A DC output with margin.

Use Scenario: Electrolysis plant rectifier converting 6.6 kV AC to 750 V DC for aluminum smelting cells.

IC Role / Device Role / Timing Role: Phase-controlled thyristor arm in cascaded 12-pulse system using two B6 bridges fed from phase-shifted transformers.

Use Value: Dual-arm integration reduces component count per pulse leg; 1000 V/µs (dv/dt)_cr prevents spurious turn-on during transformer-switching transients.

Reactive Power Compensation

DC Arc Furnace Control

Use Scenario: Thyristor-switched capacitor bank (TSC) for dynamic VAR compensation in wind farm grid interconnection.

IC Role / Device Role / Timing Role: Bidirectional switching device controlling capacitor bank insertion at voltage zero-crossing to eliminate inrush current.

Use Value: 300 µs t_q ensures clean turn-off before next half-cycle; 1500 mA latching current guarantees reliable conduction initiation despite EMI in substation environment.

Use Scenario: Primary rectifier in 40 MVA DC arc furnace power supply with fast current ramping and frequent short-circuit events.

IC Role / Device Role / Timing Role: High-current thyristor arm handling 8–12 kA short-time overload during electrode striking and arc stabilization.

Use Value: 10 kA I_TSM (10 ms) withstand enables coordination with 12.5 kA backup fuses; 0.0373 °C/W R_thJC limits junction temperature rise to <85 °C during 30 s overload.

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
TT310N26KOFHPSA1	Single-arm variant with identical V_DRM, I_TAVM, and thermal specs but no dual-arm integration.	Requires external paralleling for B6 use; increases layout area and thermal imbalance risk.	Select when modular scalability or repairability is prioritized over compactness.
DT310N26KOFHPSA1	Same ratings but with different terminal geometry (M1 mounting screws instead of M2); R_thCH = 0.02 °C/W vs. 0.01 °C/W.	Slightly higher case-to-heatsink resistance reduces max power density by ~5% under forced cooling.	Select only if legacy mechanical interface compatibility is mandatory.

Compared with TT310N26KOFHPSA1 and DT310N26KOFHPSA1, TD310N26KOFHPSA1 provides integrated dual-arm functionality and optimal thermal interface (0.01 °C/W R_thCH), making it the preferred choice for space-constrained B6 rectifiers requiring minimal external components and highest thermal efficiency.

Availability

TD310N26KOFHPSA1 is available at Aetrix Electronics and suitable for industrial DC drives, medium-voltage rectifiers, reactive power compensation systems, and DC arc furnace control requiring stable component supply across long production lifecycles.

Supply support for TD310N26KOFHPSA1 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 markets.

This part belongs to Infineon's "Netz-Thyristor-Modul" product line, engineered specifically for high-reliability, high-power AC/DC conversion in utility-scale and heavy industrial equipment where long-term thermal stability and fault-withstand capability are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The datasheet specifies a maximum case temperature (T_C) of 85 °C for rated average on-state current (I_TAVM = 310 A). Operation above this temperature requires derating per the ITAVM vs. TC curves on page 7 of the datasheet, with absolute maximum case temperature limited to 125 °C only under short-duration transient conditions.

Does TD310N26KOFHPSA1 require external snubbers?

Yes - due to its 1000 V/µs critical dv/dt rating, external RC snubbers are required for reliable operation in inductive B2/B6 bridge circuits. The recommended snubber design must limit voltage rise across the device to below 500 V/µs during commutation to prevent false triggering, especially under light-load or no-load conditions.

Can this module be used in forced-air cooled systems?

Yes - the datasheet provides explicit Z_thCA transient thermal impedance data for forced cooling (KM17 heatsink with Papst 4650N fan). Under forced-air conditions, the module supports up to 446 A average current (I_TAVM) at T_C = 58 °C, increasing usable power density by ~44% compared to natural convection.

What gate drive voltage and current are required for reliable turn-on?

A minimum gate trigger voltage of 1.5 V and peak current of 250 mA must be delivered within 20 µs to ensure latching at 1500 mA. Recommended gate drive uses a 10–20 V pulse with ≥2 A peak capability and <1 µs rise time to overcome junction capacitance and guarantee consistent firing across temperature and aging.

TD310N26KOFHPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: Module

Packaging:: Tray

Product Status:: Obsolete

Structure:: Series Connection - SCR/Diode

Number of SCRs, Diodes:: 1 SCR, 1 Diode

Voltage - Off State:: 2.6 kV

Current - On State (It (AV)) (Max):: 446 A

Current - On State (It (RMS)) (Max):: 700 A

Voltage - Gate Trigger (Vgt) (Max):: 1.5 V

Current - Gate Trigger (Igt) (Max):: 250 mA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 10000A @ 50Hz

Current - Hold (Ih) (Max):: 300 mA

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

TD310N26KOFHPSA1 FAQ

1.How can I place an order for TD310N26KOFHPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TD310N26KOFHPSA1 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 TD310N26KOFHPSA1 reliable?

The price and inventory of TD310N26KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD310N26KOFHPSA1 is usually 5 days.

3.What payment methods are accepted for TD310N26KOFHPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD310N26KOFHPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TD310N26KOFHPSA1?

TD310N26KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TD310N26KOFHPSA1 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 TD310N26KOFHPSA1?

For technical support, including TD310N26KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD310N26KOFHPSA1 requirements.

6.How does Aetrix verify that TD310N26KOFHPSA1 is sourced from the original manufacturer or authorized distributors?

All TD310N26KOFHPSA1 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 TD310N26KOFHPSA1 meets industry standards.

7.What is the process for return or replacement of TD310N26KOFHPSA1?

All TD310N26KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TD310N26KOFHPSA1, 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 TD310N26KOFHPSA1 part is unused and in its original packaging.

Return procedure for TD310N26KOFHPSA1:

1.Submit a request within 90 days.

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

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