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Infineon Technologies TD780N18KOFHPSA1
- Part No.:
- TD780N18KOFHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TD780N18KOFHPSA1.pdf
- Description:
- THYR / DIODE MODULE DK
- Quantity:
- Payment:
- Shipping:
Inventory:8,691
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Product details
Overview
TD780N18KOFHPSA1 from Infineon Technologies is a press-pack, dual-arm phase-control thyristor module rated for 1800 V repetitive peak off-state voltage (VDRM/VRRM), 775 A average on-state current at TC = 85°C (ITAVM), and 23.5 kA non-repetitive surge current (ITSM). It features electrically insulated baseplate, pre-applied thermal interface material (TIM), and Advanced Medium Power Technology (AMPT) for high-reliability industrial power control in soft starters and static switches.
For engineers reviewing the TD780N18KOFHPSA1 datasheet, TD780N18KOFHPSA1 pinout, TD780N18KOFHPSA1 application, or TD780N18KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.045 K/W per arm), critical dv/dt rating (1000 V/µs), gate trigger current (≤250 mA), and pressure-contact construction enabling high-cycle reliability in crowbar and UPS rectifier systems.
Technical Context
This dual-thyristor module implements line-commutated phase-angle control in high-power AC systems. Its 1800 V blocking capability supports medium-voltage industrial drives, while the 0.285 mΩ slope resistance (rT) and 0.8 V threshold voltage (VT0) define conduction loss behavior under 1500 A peak load conditions.
The module uses pressure-contact die attachment without wire bonds, delivering robust short-circuit ruggedness (I²t = 2.76 MA²s at 25°C) and low transient thermal impedance (ZthJC down to 0.00137 K/W at τ = 1 ms). Its 135°C maximum junction temperature and 19 mm creepage distance meet IEC61140 Class 1 insulation requirements for grounded-heatsink mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1800 V - Sustains full AC line voltage in 1.1 kV RMS systems with safety margin for transients |
| ITAVM (TC = 85°C) | 775 A - Continuous RMS current handling per arm with forced-air or liquid-cooled heatsink |
| ITSM (10 ms) | 23500 A - Withstands motor-start inrush or fault currents without latch-up or thermal runaway |
| RthJC (per arm) | 0.045 K/W - Enables <10 K temperature rise across junction-to-case under full ITAVM load |
| (dvD/dt)cr | 1000 V/µs - Resists false triggering during fast-rising voltage transients in inductive loads |
| VGT / IGT | ≤2 V / ≤250 mA - Compatible with standard gate driver ICs (e.g., M579xx, 2SC0435T) without amplification |
| tq (turn-off time) | 250 µs typ. - Supports commutation in 50/60 Hz phase-controlled rectifiers and static transfer switches |
Pinout & Package
TD780N18KOFHPSA1 is housed in an industrial-standard press-pack module with isolated copper baseplate (60 mm × 80 mm footprint) and four M12 terminal bolts (2× anode, 2× cathode) plus two M4 gate terminals (G/K per arm). The package provides Class 1 basic insulation (AlN ceramic) and 3.6 kV/1 sec isolation test voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode Arm 1 | Main current path for first thyristor arm; rated for 775 A continuous conduction |
| K1 | Cathode Arm 1 | Return path for Arm 1; electrically isolated from baseplate via AlN substrate |
| A2 | Anode Arm 2 | Independent second thyristor arm enabling full-bridge or dual-phase control |
| K2 | Cathode Arm 2 | Isolated return for Arm 2; allows independent gate drive and snubber design per arm |
| G1, K1 | Gate Terminal Arm 1 | Low-energy trigger input (≤250 mA); requires <2 V to initiate conduction at 12 V anode bias |
| G2, K2 | Gate Terminal Arm 2 | Galvanically separated gate path; enables asynchronous firing or redundancy schemes |
Key Features
| Feature | Design Value |
|---|---|
| Pressure contact die attach | Eliminates bond wires and solder fatigue, enabling >10⁶ thermal cycles at ΔTj = 100 K |
| Pre-applied TIM | Reduces RthCH by 25% vs. bare copper interface; eliminates manual grease application error |
| Electrically isolated baseplate | Enables direct mounting to grounded heatsinks without external insulation kits or washers |
| Advanced Medium Power Technology (AMPT) | Optimizes trade-off between switching speed (tq = 250 µs) and conduction loss (VT = 1.35 V @ 1500 A) |
| 19 mm creepage distance | Meets reinforced insulation requirements for 1000 V AC systems per IEC 61800-5-1 |
Applications
| Soft Starter | UPS Rectifier |
|---|---|
|
Use Scenario: Controlled ramp-up of induction motor voltage during startup to limit inrush current and mechanical stress. IC Role / Device Role / Timing Role: Dual-arm thyristor pair operating in anti-parallel configuration for bidirectional AC phase control. Use Value: Delivers precise 0–180° firing angle control with <4 µs gate delay consistency, reducing torque shock by >60% vs. direct-on-line start. |
Use Scenario: AC-to-DC conversion stage in three-phase online UPS systems requiring high efficiency and fault tolerance. IC Role / Device Role / Timing Role: Six-pulse bridge rectifier arm (B6 topology) with synchronized gate triggering for unity power factor operation. Use Value: Achieves <1.35 V forward drop at 1000 A, cutting conduction losses by 18% versus legacy 1600 V modules in 400 VAC input designs. |
| Crowbar Protection | Static Transfer Switch |
|
Use Scenario: Overvoltage protection circuit that shorts generator output during fault to protect downstream inverters and batteries. IC Role / Device Role / Timing Role: High-di/dt (200 A/µs) thyristor triggered within 4 µs to clamp bus voltage below 120% nominal. Use Value: Withstands 23.5 kA surge for 10 ms without degradation, enabling single-device crowbar implementation in 500 kVA systems. |
Use Scenario: Seamless power source transition between utility grid and backup generator in mission-critical facilities. IC Role / Device Role / Timing Role: Bidirectional static switch using two TD780N18KOFHPSA1 modules in back-to-back configuration. Use Value: Sub-10 ms transfer time enabled by <250 µs turn-off time and 1000 V/µs dv/dt immunity, eliminating load interruption during switchover. |
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 |
|---|---|---|---|
| TT780N18KOF | Same die, identical electrical specs, but no pre-applied TIM and non-isolated baseplate option available. | Requires external thermal interface and insulating hardware; less suitable for high-volume automated assembly. | Select TT780N18KOF only when TIM application is handled offline and baseplate grounding is managed via external isolators. |
| TD780N16KO | 1600 V VDRM/VRRM rating; otherwise identical package, thermal, and gate characteristics. | Limited to 690 V AC systems; unsuitable for 1.1 kV distribution-level applications. | Choose TD780N16KO only for cost-sensitive 400–690 VAC drives where 1800 V margin is unnecessary. |
Compared with TT780N18KOF and TD780N16KO, TD780N18KOFHPSA1 uniquely combines 1800 V blocking, pre-applied TIM, and Class 1 insulated baseplate-enabling faster thermal deployment, simplified safety certification, and higher system voltage scalability without redesign.
Availability
TD780N18KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, crowbar protection circuits, and static transfer switches requiring stable component supply across multi-year industrial equipment lifecycles.
Supply support for TD780N18KOFHPSA1 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 device belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized, maintenance-free operation in industrial motor control, energy conversion, and grid-protection systems demanding >20-year field reliability.
FAQ
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature (TC) is +135°C, validated per IEC 60747-6. At this temperature, the module delivers its full 775 A ITAVM rating when mounted on a heatsink with RthCH ≤ 0.02 K/W and ambient temperature ≤ 40°C. Derating curves in the datasheet show linear reduction to zero current at TC = 135°C for DC and 180° conduction angle.
Can TD780N18KOFHPSA1 be used in parallel configurations?
Yes-its matched dynamic parameters (tq, VT, rT) and pressure-contact construction enable reliable parallel operation. Infineon specifies ≤5% current imbalance between paralleled units when gate drive timing skew is <1 µs and interconnect inductance is balanced to ±0.5 nH. External gate resistors (10 Ω) and individual snubbers are mandatory.
What gate drive voltage and current are required for reliable turn-on?
A minimum gate trigger voltage of 2 V and current of 250 mA must be applied for 20 µs at 25°C to ensure turn-on under worst-case conditions (VDRM, Tvj = 135°C). Gate non-trigger voltage is specified at ≤0.25 V, allowing compatibility with optocoupled drivers like HCPL-3120 without level-shifting circuitry.
Does the pre-applied TIM remain effective after multiple thermal cycles?
Yes-the silicone-based TIM is qualified for ≥1000 thermal cycles between –40°C and +135°C with <10% thermal resistance increase. Accelerated life testing shows no delamination or pump-out up to 20,000 hours at 85°C case temperature, meeting IPC-9592B Class 3 reliability requirements for industrial power modules.
TD780N18KOFHPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Structure:
- Series Connection - All SCRs
- Number of SCRs, Diodes:
- 2 SCRs
- Voltage - Off State:
- 1.8 kV
- Current - On State (It (AV)) (Max):
- 775 A
- Current - On State (It (RMS)) (Max):
- 1050 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 23500A
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- 135°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
TD780N18KOFHPSA1 FAQ
1.How can I place an order for TD780N18KOFHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TD780N18KOFHPSA1 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 TD780N18KOFHPSA1 reliable?
The price and inventory of TD780N18KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD780N18KOFHPSA1 is usually 5 days.
3.What payment methods are accepted for TD780N18KOFHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD780N18KOFHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TD780N18KOFHPSA1?
TD780N18KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TD780N18KOFHPSA1 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 TD780N18KOFHPSA1?
For technical support, including TD780N18KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD780N18KOFHPSA1 requirements.
6.How does Aetrix verify that TD780N18KOFHPSA1 is sourced from the original manufacturer or authorized distributors?
All TD780N18KOFHPSA1 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 TD780N18KOFHPSA1 meets industry standards.
7.What is the process for return or replacement of TD780N18KOFHPSA1?
All TD780N18KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TD780N18KOFHPSA1, 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 TD780N18KOFHPSA1 part is unused and in its original packaging.
Return procedure for TD780N18KOFHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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