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

Infineon Technologies T2351N52TOHXPSA1

Name: T2351N52TOHXPSA1
Brand: Infineon Technologies
SKU: T2351N52TOHXPSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T2351N52TOHXPSA1

Manufacturer:: Infineon Technologies

Category:: SCRs - Modules

Package:: TO-200AF

Datasheet:: T2351N52TOHXPSA1.pdf

Description:: SCR MODULE 5200V 3530A DO200AE

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Product details

Overview

T2351N52TOHXPSA1 from Infineon Technologies is a phase-control thyristor designed for medium-voltage power conversion, featuring V_DRM/V_RRM = 5200 V, I_TAVM = 2250 A (T_C = 85°C), and high di/dt capability of 300 A/µs. It operates in load-commutated inverters and medium-voltage soft starters with two-sided forced cooling.

For engineers reviewing the T2351N52TOHXPSA1 datasheet, T2351N52TOHXPSA1 pinout, T2351N52TOHXPSA1 application, or T2351N52TOHXPSA1 equivalent, key selection criteria include clamping force range (45–65 kN), transient thermal impedance Z_thJC, gate trigger current (≤350 mA), and critical dv/dt rating (2000 V/µs).

Technical Context

This thyristor uses pressure-contact silicon pellet construction with dual-sided heat sinking and is rated for operation up to 125°C junction temperature. Its design supports line-commutated and load-commutated switching in high-power AC/DC conversion systems.

It delivers stable blocking at 50/60 Hz across –40°C to +125°C ambient, with verified non-rupture case current and high surge immunity (I_TSM = 55 kA, 10 ms). Gate control is optimized for low trigger energy and fast turn-on (t_gd ≤ 2 µs) under standardized test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM/V_RRM	5200 V - maximum repetitive peak off-state voltage in forward/reverse direction, enabling direct use in 3.3 kV AC systems with safety margin
I_TAVM	2250 A @ T_C = 85°C - average on-state current rating defining continuous conduction capability with two-sided cooling
I_TSM	55000 A @ 10 ms - surge current withstand defines short-circuit robustness in drive rectifier fault scenarios
(di/dt)_cr	300 A/µs - minimum required rate of rise for reliable turn-on without spurious triggering
(dv/dt)_cr	2000 V/µs - critical off-state voltage rise rate before unintended commutation occurs
R_thJC	6.0 K/kW - junction-to-case thermal resistance with two-sided DC cooling, used to calculate heatsink requirements
V_T0	0.81 V - threshold voltage determining conduction onset and low-current loss behavior
r_T	0.347 mΩ - slope resistance defining linear on-state voltage drop above threshold (v_T ≈ V_T0 + i_T × r_T)

Pinout & Package

Package: Disc-type, double-side cooled, press-pack thyristor with 121 mm max diameter, 86 mm contact diameter, and 26 mm height. Requires mechanical clamping force of 45–65 kN.

Pin/Terminal	Circuit Role	Design Meaning
Anode (1)	Main current terminal (high-side)	Carries full load current during conduction; must be thermally coupled to heatsink via conductive interface
Cathode (2)	Main current terminal (low-side)	Completes main conduction path; electrically isolated but thermally active in two-sided cooling configuration
Gate (4)	Control input	Triggers conduction when ≥350 mA pulse applied; requires low-inductance gate drive to meet di/dt demands
Hilfskathode / Auxiliary Cathode (5)	Gate reference node	Provides dedicated low-impedance return path for gate current, improving noise immunity and triggering reliability

Key Features

Feature	Design Value
Full 50/60 Hz blocking over –40°C to +125°C	Enables deployment in outdoor or unconditioned industrial environments without derating
High case non-rupture current	Withstands mechanical stress during extreme short-circuit events without housing failure
Two-sided thermal interface design	Supports symmetrical heat extraction from both anode and cathode surfaces for optimal thermal management
Gate-controlled delay time ≤ 2 µs	Ensures precise timing alignment in synchronized multi-thyristor converter topologies
Recovery charge Q_r = 17 mAs	Defines commutation losses and snubber sizing in load-commutated inverter (LCI) applications

Applications

Medium Voltage Softstarter

Drive Rectifier

Use Scenario: Controlled ramp-up of induction motors in mining conveyor systems operating at 3.3 kV.

IC Role / Device Role / Timing Role: Phase-controlled conduction element regulating RMS voltage applied to motor stator windings.

Use Value: Reduces mechanical stress and inrush current by limiting starting torque, enabled by precise gate timing and 5200 V blocking margin.

Use Scenario: Front-end AC/DC conversion in large industrial variable-frequency drives (VFDs).

IC Role / Device Role / Timing Role: Main power switch in six-pulse or twelve-pulse rectifier bridges handling >2 MW output.

Use Value: Sustains 2250 A average current with <1.85 V on-state drop, minimizing conduction losses at full load.

Medium Voltage Drive Inverter

Load Commutating Inverter (LCI)

Use Scenario: Regenerative braking and speed control in high-inertia steel mill rolling stands.

IC Role / Device Role / Timing Role: Bidirectional switching device in cycloconverter topology delivering variable-frequency AC output.

Use Value: Supports 300 A/µs di/dt and 2000 V/µs dv/dt ratings to maintain commutation integrity under rapid load transients.

Use Scenario: Synchronous motor excitation in hydroelectric generator sets requiring sinusoidal current waveform.

IC Role / Device Role / Timing Role: Forced-commutated switching element using load inductance for natural turn-off.

Use Value: Low Q_r (17 mAs) and fast tq (450 µs) minimize reactive energy loss and improve commutation success rate.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TT2351N52KOF	Same V_DRM/V_RRM and I_TAVM, but rated for 100°C case temperature and uses different gate termination geometry	Optimized for single-sided cooling; lower thermal resistance to heatsink (R_thCH = 1.5 K/kW vs. 2.0 K/kW)	Select when system uses only anode-side heatsinking and requires tighter gate drive layout tolerance
STT2351N52H	Identical voltage/current ratings but features enhanced dv/dt immunity (2500 V/µs) and higher I_TSM (60 kA)	Targeted at high-noise grid-tied converters where EMI-induced false triggering is a concern	Prefer when operating near harmonic-rich utility interfaces or with long cable runs introducing voltage overshoot

Compared with TT2351N52KOF and STT2351N52H, the T2351N52TOHXPSA1 offers balanced performance for dual-sided cooled LCI and softstarter designs, with verified thermal transient response and gate drive compatibility across standard industrial trigger circuits.

Availability

T2351N52TOHXPSA1 is available at Aetrix Electronics and suitable for medium-voltage soft starters, drive rectifiers, and load-commutated inverters requiring stable component supply, long-life field reliability, and traceable manufacturing origin.

Supply support for T2351N52TOHXPSA1 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 industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

This part belongs to Infineon's "Netz-Thyristor" product line, engineered specifically for high-power, medium-voltage AC power control applications including cycloconverters, soft starters, and industrial rectification systems.

FAQ

What is the recommended clamping force for T2351N52TOHXPSA1 installation?

The device requires a mechanical clamping force between 45 kN and 65 kN to ensure proper thermal contact and electrical integrity across the pressure-contact silicon pellet. Under-torque risks thermal runaway; over-torque may deform the copper housings or damage internal bonding. Use calibrated hydraulic tools and follow Infineon's mounting sequence per Application Note AN2015-007.

Does T2351N52TOHXPSA1 support asymmetrical cooling configurations?

No - its R_thJC specification (6.0 K/kW) is defined exclusively for two-sided, DC-cooled operation. Asymmetrical or single-sided cooling increases junction temperature beyond rated limits and voids the 125°C T_vj guarantee. For single-sided use, select TT2351N52KOF, which specifies R_thJC = 11.0 K/kW (anode-side only).

How is the auxiliary cathode (terminal 5) used in gate drive design?

Terminal 5 provides a dedicated low-inductance return path for gate current, decoupling it from main cathode current loops. It must be connected directly to the gate driver ground with minimal trace length (<10 mm) and no shared vias. Omitting this connection increases t_gd variation and raises risk of false triggering under high di/dt conditions.

Can T2351N52TOHXPSA1 be paralleled for higher current capacity?

Parallel operation is not recommended without active current-sharing circuitry. The device lacks integrated emitter ballasting or matched dynamic parameters. Even with identical gate drive, mismatched v_T and r_T values cause current imbalance exceeding 20% at full load. For >2250 A systems, use multi-phase topologies or higher-rated single devices like T3351N52TOHXPSA1.

T2351N52TOHXPSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-200AF

Packaging:: Tray

Product Status:: Active

Structure:: Single

Number of SCRs, Diodes:: 1 SCR

Voltage - Off State:: 5.2 kV

Current - On State (It (AV)) (Max):: 3110 A

Current - On State (It (RMS)) (Max):: 3530 A

Voltage - Gate Trigger (Vgt) (Max):: 2.5 V

Current - Gate Trigger (Igt) (Max):: 350 mA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 55000A @ 50Hz

Current - Hold (Ih) (Max):: 350 mA

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

T2351N52TOHXPSA1 FAQ

1.How can I place an order for T2351N52TOHXPSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for T2351N52TOHXPSA1 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 T2351N52TOHXPSA1 reliable?

The price and inventory of T2351N52TOHXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T2351N52TOHXPSA1 is usually 5 days.

3.What payment methods are accepted for T2351N52TOHXPSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T2351N52TOHXPSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T2351N52TOHXPSA1?

T2351N52TOHXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T2351N52TOHXPSA1 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 T2351N52TOHXPSA1?

For technical support, including T2351N52TOHXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T2351N52TOHXPSA1 requirements.

6.How does Aetrix verify that T2351N52TOHXPSA1 is sourced from the original manufacturer or authorized distributors?

All T2351N52TOHXPSA1 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 T2351N52TOHXPSA1 meets industry standards.

7.What is the process for return or replacement of T2351N52TOHXPSA1?

All T2351N52TOHXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T2351N52TOHXPSA1, 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 T2351N52TOHXPSA1 part is unused and in its original packaging.

Return procedure for T2351N52TOHXPSA1:

1.Submit a request within 90 days.

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

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