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Infineon Technologies TD140N18KOFHPSA1
- Part No.:
- TD140N18KOFHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TD140N18KOFHPSA1.pdf
- Description:
- SCR MODULE 2200V 250A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:5,787
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Product details
Overview
TD140N18KOFHPSA1 from Infineon Technologies is a phase-control thyristor module rated for 140 A average on-state current (TC = 85°C), 1800 V repetitive peak off-state voltage (VDRM/VRRM), and 4000 A non-repetitive surge current (10 ms, Tvj = 25°C). It features pressure-contact silicon die, aluminum nitride (AlN) internal isolation, and is designed for industrial AC power control in medium-voltage motor drives and heating systems.
For engineers reviewing the TD140N18KOFHPSA1 datasheet, TD140N18KOFHPSA1 pinout, TD140N18KOFHPSA1 application, or TD140N18KOFHPSA1 equivalent, key selection criteria include its 0.095 °C/W junction-to-case thermal resistance, 150 A/µs critical di/dt rating, 1000 V/µs critical dv/dt capability, and compatibility with forced-air-cooled heatsinks such as KM17 with Papst 4650N fans.
Technical Context
This dual-thyristor module operates in B2 (two-pulse) and B6 (six-pulse) bridge configurations, supporting line-commutated AC-AC and AC-DC conversion. Its 125°C maximum junction temperature and -40°C to +125°C operating case temperature range enable robust operation in harsh industrial environments.
The device uses symmetric gate triggering with 150 mA max IGT and 2 V max VGT at 25°C, and exhibits low conduction loss: 1.84 V max on-state voltage at 500 A and 125°C, with 0.9 V threshold voltage and 1.75 mΩ slope resistance - enabling high-efficiency power handling under continuous load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1800 V - Repetitive blocking voltage per arm; defines maximum AC line voltage it can safely commutate in B2/B6 rectifiers. |
| ITAVM (TC = 85°C) | 140 A - Continuous average on-state current per arm; sets RMS current limit for thermal design with natural or forced cooling. |
| ITSM (10 ms) | 4000 A - Non-repetitive surge current rating; determines short-circuit withstand capability during fault conditions. |
| (diT/dt)cr | 150 A/µs - Minimum required commutation di/dt to avoid false turn-on; dictates snubber design and gate drive strength. |
| (dvD/dt)cr | 1000 V/µs - Critical off-state voltage rise rate; defines immunity to transient overvoltages without spurious triggering. |
| RthJC (per arm) | 0.190 °C/W - Junction-to-case thermal resistance under DC conduction; used to calculate junction temperature rise from measured case temp. |
| vT (max) | 1.84 V @ 500 A, 125°C - On-state voltage drop; directly determines conduction losses (PTAV ≈ vT × ITAV) in thermal modeling. |
Pinout & Package
TD140N18KOFHPSA1 is housed in a press-pack module package with isolated copper baseplate, AlN ceramic insulation, and M1 mechanical mounting (6 Nm ±15%). Terminals are arranged for dual-arm configuration: two main anode/cathode pairs plus independent gate terminals for each thyristor.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, K1 | Main terminals of thyristor arm 1 | Carry full load current in one half-bridge leg; require low-inductance busbar connection and thermal interface to heatsink. |
| A2, K2 | Main terminals of thyristor arm 2 | Completes complementary arm for B2/B6 bridge topology; electrically isolated from arm 1 via AlN substrate. |
| G1, K1 | Gate-cathode terminals for arm 1 | Accept trigger pulse (≤150 mA, ≤2 V); referenced to K1; requires low-impedance gate drive path to prevent false firing. |
| G2, K2 | Gate-cathode terminals for arm 2 | Independent gate control enables asymmetric firing angles; must be galvanically isolated from G1/K1 and power ground. |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact Si die | Enables high-current density and repeatable thermal contact without solder fatigue; supports >10⁶ thermal cycles in industrial duty. |
| AlN internal isolation | Provides 3.0 kV RMS insulation test voltage (1 sec) and 15 mm creepage distance - meets IEC 60747-6 for reinforced isolation. |
| Low RthJC (0.190 °C/W) | Reduces junction temperature rise by ~76°C vs. comparable modules at 140 A, extending lifetime and enabling compact heatsink designs. |
| High (dvD/dt)cr (1000 V/µs) | Eliminates need for RC snubbers in many 50/60 Hz applications, simplifying layout and reducing component count in AC controllers. |
| Rated for B2 & B6 bridges | Validated for both two-pulse and six-pulse configurations - supports flexible system architecture in motor drives and DC power supplies. |
Applications
| Industrial Motor Speed Control | Three-Phase AC Heating Control |
|---|---|
|
Use Scenario: Phase-angle control of induction motor stator voltage in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Dual-arm thyristor module switching line-frequency AC in B6 bridge to regulate RMS output voltage. Use Value: Enables smooth torque control without harmonic filters; leverages 125°C Tj rating for sustained overload operation up to 159 A (TC = 77°C). |
Use Scenario: Power regulation in resistive three-phase furnaces and industrial ovens. IC Role / Device Role / Timing Role: B6-connected thyristor module delivering adjustable AC power to balanced delta/star loads. Use Value: Achieves <1.84 V conduction drop at full load, minimizing heat generation in enclosed heater cabinets where airflow is limited. |
| Medium-Voltage Rectification | Static VAR Compensation (SVC) |
|
Use Scenario: 1800 V-class AC-DC conversion for electroplating and DC traction power supplies. IC Role / Device Role / Timing Role: Line-commutated rectifier arm in 12-pulse system using two TD140N18KOFHPSA1 modules per converter. Use Value: Withstands 2200 V VRRM margin and 300 µs tq typ., ensuring reliable commutation even with weak AC sources and high source impedance. |
Use Scenario: Thyristor-switched capacitor (TSC) banks in utility substations for reactive power balancing. IC Role / Device Role / Timing Role: Fast-turn-on thyristor module triggered synchronously with voltage zero-crossing to minimize inrush and EMI. Use Value: 3 µs tgd max and 150 A/µs (diT/dt)cr allow precise firing control within 1° electrical angle, critical for sub-cycle VAR step resolution. |
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 |
|---|---|---|---|
| TT140N18KOFHPSA1 | Same die, identical ratings, but packaged in older TT-series housing with slightly higher RthJC (0.205 °C/W) and no M2 terminal torque spec. | Compatible in legacy B6 rectifier designs; lacks updated creepage (15 mm) and vibration rating (50 m/s²) of TD-series. | Select when replacing field-installed TT140N units; verify heatsink interface matches older flange geometry. |
| TD162N18KOFHPSA1 | Higher ITAVM (162 A at TC = 77°C), same VDRM/VRRM, but 0.175 °C/W RthJC and 4500 A ITSM - larger die area and heavier baseplate. | Suitable for upgraded systems requiring 15% higher continuous current or enhanced short-circuit robustness. | Choose when thermal margin is constrained or system-level fault current exceeds 4000 A; requires revised mechanical mounting. |
Compared with TT140N18KOFHPSA1, TD140N18KOFHPSA1 offers improved thermal performance and tighter mechanical specs; versus TD162N18KOFHPSA1, it provides optimal cost–performance balance for standard 140 A industrial drives without overengineering.
Availability
TD140N18KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, three-phase heating systems, medium-voltage rectifiers, and static VAR compensation requiring stable component supply across multi-year production cycles.
Supply support for TD140N18KOFHPSA1 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 "Thyristor Modules" product line, engineered specifically for high-reliability, high-power AC phase control in demanding industrial environments - emphasizing thermal robustness, isolation integrity, and long-term parametric stability.
FAQ
What is the maximum allowable case temperature for continuous operation?
The TD140N18KOFHPSA1 supports continuous operation up to 85°C case temperature for its rated 140 A average on-state current (ITAVM). At higher case temperatures - up to 125°C - derating applies: 159 A is permitted only at TC = 77°C, per the datasheet's thermal curves for sinusoidal conduction.
Does this module require external snubber circuits?
Snubbers are not required for basic 50/60 Hz phase control due to its 1000 V/µs critical dv/dt rating and 150 A/µs di/dt capability. However, RC snubbers are recommended for high-dv/dt environments (e.g., transformer-fed supplies) or when operating near VDRM limits to suppress voltage overshoot during commutation.
Can TD140N18KOFHPSA1 be used in asymmetrical firing configurations?
Yes - its independently isolated gate terminals (G1/K1 and G2/K2) support fully independent triggering of each thyristor arm. This enables asymmetrical firing for specialized waveforms, harmonic mitigation, or soft-start sequences in motor drives without cross-talk or latch-up risk.
What is the recommended heatsink mounting torque for mechanical terminals?
The mechanical mounting screws (M1) require 6 Nm torque with ±15% tolerance. Electrical terminals (M2) also specify 6 Nm, but with ±10% tolerance. Proper torque ensures consistent thermal contact pressure across the AlN insulator and prevents thermal runaway or premature fatigue under thermal cycling.
TD140N18KOFHPSA1 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:
- 2.2 kV
- Current - On State (It (AV)) (Max):
- 159 A
- Current - On State (It (RMS)) (Max):
- 250 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 150 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 4000A @ 50Hz
- Current - Hold (Ih) (Max):
- 200 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
TD140N18KOFHPSA1 FAQ
1.How can I place an order for TD140N18KOFHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TD140N18KOFHPSA1 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 TD140N18KOFHPSA1 reliable?
The price and inventory of TD140N18KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD140N18KOFHPSA1 is usually 5 days.
3.What payment methods are accepted for TD140N18KOFHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD140N18KOFHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TD140N18KOFHPSA1?
TD140N18KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TD140N18KOFHPSA1 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 TD140N18KOFHPSA1?
For technical support, including TD140N18KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD140N18KOFHPSA1 requirements.
6.How does Aetrix verify that TD140N18KOFHPSA1 is sourced from the original manufacturer or authorized distributors?
All TD140N18KOFHPSA1 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 TD140N18KOFHPSA1 meets industry standards.
7.What is the process for return or replacement of TD140N18KOFHPSA1?
All TD140N18KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TD140N18KOFHPSA1, 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 TD140N18KOFHPSA1 part is unused and in its original packaging.
Return procedure for TD140N18KOFHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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