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

Infineon Technologies TZ740N22KOFHPSA3

Name: TZ740N22KOFHPSA3
Brand: Infineon Technologies
SKU: TZ740N22KOFHPSA3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TZ740N22KOFHPSA3

Manufacturer:: Infineon Technologies

Category:: SCRs - Modules

Package:: Module

Datasheet:: TZ740N22KOFHPSA3.pdf

Description:: SCR MODULE 2.2KV 1500A MODULE

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Product details

Overview

TZ740N22KOFHPSA3 from Infineon Technologies is a pressure-contact thyristor module for phase-controlled AC power regulation in high-current industrial systems. It delivers 819 A average on-state current at 85°C case temperature, 2200 V reverse repetitive peak voltage, and 30 kA non-repetitive surge current, enabling robust operation in soft starters and static switches.

For engineers reviewing the TZ740N22KOFHPSA3 datasheet, TZ740N22KOFHPSA3 pinout, TZ740N22KOFHPSA3 application, or TZ740N22KOFHPSA3 equivalent, key selection criteria include junction-to-case thermal resistance (0.0405 K/W), gate trigger current (≤250 mA), threshold voltage (0.82 V), and insulated base plate construction for high-voltage isolation in drive rectifiers and crowbar circuits.

Technical Context

This double-sided, dual-thyristor module uses pressure-contact silicon pellet technology to eliminate wire bonds and enhance thermal cycling reliability. Its 70 mm base plate supports forced-air or liquid cooling, with pre-applied TIM option reducing case-to-heatsink thermal resistance to 0.010 K/W.

The device operates with 125°C maximum junction temperature and features 1000 V/µs critical dv/dt rating and 200 A/µs critical di/dt capability-enabling stable commutation in 50/60 Hz line-frequency applications such as six-pulse bridge rectifiers and battery charger front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	2200 V - Sustains full reverse line voltage in 3-phase 690 VAC systems with safety margin
I_TAVM	819 A @ T_C = 85°C - Continuous RMS current handling per arm under industrial thermal conditions
R_thJC	0.0405 K/W - Enables efficient heat transfer from junction to base plate for compact heatsink design
V_T0	0.82 V - Low conduction threshold reduces forward losses in high-current rectifier bridges
r_T	0.17 mΩ - Slope resistance determines linear on-state voltage drop under load (e.g., 1.51 V @ 3000 A)
I₂t	4.5×10⁶ A²s @ 25°C - Withstands short-circuit energy in crowbar protection without latch-up
(dv/dt)_cr	1000 V/µs - Prevents false triggering during fast transients in motor drive inverters

Pinout & Package

Package: Industrial-standard 70 mm × 146 mm pressure-contact thyristor module with electrically insulated AlN ceramic base plate, M2 terminal torque (18 Nm), and DIN 46244 A control terminals (2.8 × 0.8 mm).

Pin/Terminal	Circuit Role	Design Meaning
Anode 1 (A1)	Main current input for first thyristor arm	High-current copper stud (M12) rated for 1500 A RMS; requires 6 Nm mounting torque
Cathode 1 (K1)	Main current return for first thyristor arm	Shared base plate connection; thermally coupled to junction via low-R_thJC path
Anode 2 (A2)	Main current input for second thyristor arm	Independent stud terminal enabling dual-arm phase control in B6 bridge configurations
Cathode 2 (K2)	Main current return for second thyristor arm	Electrically isolated from K1 by internal AlN insulation; supports floating gate drive
Gate 1 (G1)	Trigger control for first thyristor	DIN 46244 A flat blade terminal; accepts ≤250 mA I_GT, ≤2 V V_GT
Gate 2 (G2)	Trigger control for second thyristor	Isolated gate path; enables independent firing angle control in asymmetrical phase control

Key Features

Feature	Design Value
Pressure contact silicon pellet	Eliminates bond wires and thermal interface voids, improving power cycling lifetime >10⁵ cycles
Electrically insulated base plate	AlN ceramic (class 1 insulation, 3.6 kV/1 sec test) enables direct mounting on grounded heatsinks
Pre-applied TIM option	Reduces R_thCH from 0.015 K/W to 0.010 K/W, lowering case temperature rise by ~3.5°C at 800 A
Advanced Medium Power Technology (AMPT)	Optimized doping profile achieves 0.82 V V_T0 and 1000 V/µs dv/dt immunity simultaneously
Standardized mechanical footprint	70 mm × 146 mm outline with 54 mm × 59 mm terminal pitch ensures drop-in replacement in legacy soft starter designs

Applications

Soft Starter

Drive Rectifier

Use Scenario: Controlled ramp-up of induction motor voltage during startup to limit inrush current.

IC Role / Device Role / Timing Role: Dual-arm phase-controlled thyristor module regulating AC line voltage applied to motor windings.

Use Value: Delivers 819 A continuous current with 30 kA surge tolerance, enabling reliable motor acceleration without contactor wear.

Use Scenario: AC-to-DC conversion in variable-speed drive front-end using six-pulse bridge topology.

IC Role / Device Role / Timing Role: Two independent thyristor arms configured as half-bridge legs in B6 rectifier configuration.

Use Value: 2200 V V_RRM supports 690 VAC 3-phase input; 0.0405 K/W R_thJC maintains <125°C junction temp at full load.

Crowbar Protection

Battery Charger

Use Scenario: Short-circuiting DC bus during overvoltage events to protect downstream converters and batteries.

IC Role / Device Role / Timing Role: High-current thyristor module triggered to clamp bus voltage by diverting fault current through low-impedance path.

Use Value: 4.5×10⁶ A²s I²t rating withstands 30 kA/10 ms faults; 350 µs turn-off time enables rapid fault clearing.

Use Scenario: Regulated AC/DC conversion for traction battery charging in industrial EV chargers.

IC Role / Device Role / Timing Role: Phase-controlled rectifier delivering adjustable DC output voltage to battery management system.

Use Value: 0.82 V V_T0 and 0.17 mΩ r_T minimize conduction losses across 0–1000 A charge profiles.

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
TT740N22KOFHPSA3	Same die, identical electrical specs, but uses solder-bonded instead of pressure-contact construction	Limited to lower thermal cycling stress; unsuitable for frequent soft-start duty cycles	Select when cost sensitivity outweighs lifetime requirements in fixed-speed applications
TZ740N22KOFHPSA4	Identical package and ratings, but with enhanced TIM layer yielding R_thCH = 0.008 K/W	Enables higher current derating in space-constrained enclosures with passive cooling	Select when ambient temperature exceeds 55°C or heatsink surface area is limited

Compared with TT740N22KOFHPSA3 and TZ740N22KOFHPSA4, TZ740N22KOFHPSA3 offers superior long-term reliability in high-cycle industrial environments due to pressure-contact architecture, while maintaining identical voltage/current ratings and mechanical compatibility.

Availability

TZ740N22KOFHPSA3 is available at Aetrix Electronics and suitable for soft starters, drive rectifiers, crowbar protection circuits, and battery chargers requiring stable component supply across multi-year production programs.

Supply support for TZ740N22KOFHPSA3 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-Modul" product line, engineered specifically for high-power AC phase control in industrial motor drives, UPS systems, and grid-connected power conditioning equipment.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature for continuous operation is 85°C, as specified for the 819 A I_TAVM rating. Operation above this temperature requires derating per the TC = f(I_TAVM) curve on page 7 of the technical information sheet, where 125°C junction temperature limits case temperature to 65°C at full current under worst-case thermal conditions.

Does TZ740N22KOFHPSA3 require external snubber circuits?

Snubbers are recommended for inductive loads with di/dt exceeding 200 A/µs or when operating near the 1000 V/µs (dv/dt)_cr limit. The module's 350 µs turn-off time and 200 A/µs (di/dt)_cr make snubbers necessary in six-pulse rectifiers feeding large DC link inductors to prevent commutation failure.

How is gate drive isolation implemented in this module?

Gate terminals G1 and G2 are electrically isolated from the main power terminals and base plate by internal creepage distance (36 mm) and reinforced insulation (3.6 kV/1 sec). Each gate accepts 1–2 V trigger voltage and 100–250 mA trigger current, requiring separate isolated gate drivers referenced to their respective cathodes (K1/K2).

Can TZ740N22KOFHPSA3 be used in parallel configurations?

Parallel operation is not recommended due to mismatch in dynamic parameters (e.g., tq, V_T) between units. The module is designed for single-arm or dual-arm (B2/B6) use only. For higher current, Infineon specifies series-connected modules with matched dynamic characteristics-not parallel stacking-per application note AN2015-07.

TZ740N22KOFHPSA3 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:: 2.2 kV

Current - On State (It (AV)) (Max):: 819 A

Current - On State (It (RMS)) (Max):: 1500 A

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

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

Current - Non Rep. Surge 50, 60Hz (Itsm):: 30000A @ 50Hz

Current - Hold (Ih) (Max):: 500 mA

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

TZ740N22KOFHPSA3 FAQ

1.How can I place an order for TZ740N22KOFHPSA3 through Aetrix?

Please submit a Request for Quotation (RFQ) for TZ740N22KOFHPSA3 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 TZ740N22KOFHPSA3 reliable?

The price and inventory of TZ740N22KOFHPSA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZ740N22KOFHPSA3 is usually 5 days.

3.What payment methods are accepted for TZ740N22KOFHPSA3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZ740N22KOFHPSA3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TZ740N22KOFHPSA3?

TZ740N22KOFHPSA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TZ740N22KOFHPSA3 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 TZ740N22KOFHPSA3?

For technical support, including TZ740N22KOFHPSA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZ740N22KOFHPSA3 requirements.

6.How does Aetrix verify that TZ740N22KOFHPSA3 is sourced from the original manufacturer or authorized distributors?

All TZ740N22KOFHPSA3 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 TZ740N22KOFHPSA3 meets industry standards.

7.What is the process for return or replacement of TZ740N22KOFHPSA3?

All TZ740N22KOFHPSA3 units undergo pre-shipment inspection (PSI). If there is an issue with TZ740N22KOFHPSA3, 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 TZ740N22KOFHPSA3 part is unused and in its original packaging.

Return procedure for TZ740N22KOFHPSA3:

1.Submit a request within 90 days.

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

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