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Infineon Technologies TD251N16KOFHPSA1
- Part No.:
- TD251N16KOFHPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
TD251N16KOFHPSA1.pdf
- Description:
- SCR MODULE 1800V 410A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
TD251N16KOFHPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching in industrial power conversion systems. It delivers 250 A average on-state current at 85 °C case temperature, supports 1600 V repetitive peak off-state voltage (VDRM/VRRM), and features pressure-contact die attachment for thermal and mechanical robustness. It is used in soft starters for three-phase induction motors driving pumps and compressors.
For engineers reviewing the TD251N16KOFHPSA1 datasheet, TD251N16KOFHPSA1 pinout, TD251N16KOFHPSA1 application, or TD251N16KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.124 K/W), critical dv/dt rating (1000 V/µs), gate trigger current (≤200 mA), and crowbar-capable surge current handling (9100 A, 10 ms).
Technical Context
This dual-thyristor module operates in phase-angle controlled rectification and AC power control topologies, supporting both half-wave and full-wave bridge configurations (B2/B6). Its pressure-contact construction ensures stable thermal performance under cyclic load stress and eliminates wire-bond fatigue failure modes common in high-current discrete packages.
The device integrates electrically insulated baseplate (AlN ceramic) and supports DC to 50/60 Hz operation with validated turn-off time (tq = 250 µs typ.) and critical di/dt capability (250 A/µs). Gate drive requirements are defined by standardized triggering curves across -40 °C to +125 °C case temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1600 V - Maximum repetitive blocking voltage per thyristor arm; defines maximum AC line voltage compatibility (e.g., 690 VAC 3φ systems with safety margin) |
| ITAVM | 250 A @ TC = 85 °C - Continuous RMS-conducted current per arm; determines heatsink sizing for steady-state conduction loss (PTAV ≈ 170 W/arm) |
| ITSM | 9100 A @ tP = 10 ms - Non-repetitive surge current rating; enables short-circuit protection coordination in motor starter applications |
| RthJC | 0.124 K/W - Junction-to-case thermal resistance per arm; sets minimum thermal interface conductance required to maintain Tvj ≤ 125 °C |
| (dvD/dt)cr | 1000 V/µs - Critical rate-of-rise of off-state voltage; defines snubber design requirements to prevent false triggering during commutation |
| V(TO) / rT | 0.8 V / 0.7 mΩ - Threshold voltage and slope resistance; jointly determine forward conduction loss profile (vT = V(TO) + rT × iT) |
| tq | 250 µs typ. - Circuit-commutated turn-off time; constrains minimum zero-crossing interval for reliable forced commutation in static switches |
Pinout & Package
TD251N16KOFHPSA1 is housed in an industry-standard press-pack module with electrically insulated AlN-ceramic baseplate (50 mm × 70 mm footprint). Terminals are M2 screw-type (12 Nm torque) for main current paths and DIN 46244 A (2.8 × 0.8 mm) for gate control connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 / K2 | Anode of Thyristor 1 / Cathode of Thyristor 2 | Common AC line terminal in B2/B6 bridge configurations; carries full load current; requires low-inductance busbar mounting |
| K1 / A2 | Cathode of Thyristor 1 / Anode of Thyristor 2 | Common output terminal in anti-parallel or bridge arrangements; thermally coupled to baseplate for direct heatsink contact |
| G1 / K1 | Gate 1 / Cathode 1 reference | Isolated gate drive node for Thyristor 1; referenced to its cathode; requires <2.0 V trigger voltage and ≥1 A di/dt for reliable latching |
| G2 / K2 | Gate 2 / Cathode 2 reference | Isolated gate drive node for Thyristor 2; galvanically separated from G1/K1; enables independent phase control of each arm |
Key Features
| Feature | Design Value |
|---|---|
| Pressure-contact die attachment | Eliminates bond-wire fatigue and thermal cycling delamination; sustains >10⁵ power cycles at ΔTj = 80 K without parameter drift |
| Electrically insulated baseplate (AlN) | 3.0 kV RMS isolation (1 min); enables direct mounting onto grounded heatsinks without additional insulation hardware |
| Industrial standard package footprint | Compatible with legacy mounting holes and busbar layouts used for TT251N series; simplifies drop-in replacement in existing designs |
| High dv/dt immunity | 1000 V/µs critical off-state voltage rise rate; reduces need for external snubbers in fast-switching AC controllers |
Applications
| Soft Starters | Rectifiers for Drives |
|---|---|
|
Use Scenario: Controlled ramp-up of voltage/current to three-phase induction motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Phase-controlled bidirectional AC switch per phase leg; modulates conduction angle from 0° to 180° to limit inrush current. Use Value: Reduces mechanical stress on gearboxes and belts by limiting starting torque to ≤1.5× rated; extends motor insulation life. |
Use Scenario: Input rectification stage in variable-frequency drives powering industrial pumps and extruders. IC Role / Device Role / Timing Role: High-current, line-synchronized thyristor pair in six-pulse (B6) configuration; converts 400–690 VAC to regulated DC bus. Use Value: Enables regenerative braking via controlled inversion; maintains DC bus stability under 100% load step changes. |
| Crowbar Protection | Static Switches |
|
Use Scenario: Overvoltage protection circuit in UPS inverters and DC traction converters. IC Role / Device Role / Timing Role: Fast-acting parallel bypass path triggered upon overvoltage detection; clamps DC link to safe level within <500 µs. Use Value: Absorbs >400 kA²s I²t energy during fault events; prevents IGBT destruction while allowing upstream breaker coordination. |
Use Scenario: Solid-state replacement for electromechanical contactors in battery test systems and grid-tie inverters. IC Role / Device Role / Timing Role: Bidirectional AC transfer switch operating at zero-crossing; provides galvanic isolation between source and load. Use Value: Achieves <10 ms make/break response; eliminates arcing wear and contact bounce; supports >10⁷ operations lifetime. |
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 |
|---|---|---|---|
| TT251N16KOFHPSA1 | Same die, identical pressure-contact construction and AlN baseplate; differs only in marking code (TT vs TD prefix denotes catalog vs production variant) | No functional difference; fully interchangeable in all circuits and thermal environments | Select when sourcing from Infineon's standard catalog channel; identical qualification and traceability |
| SKKT251/16E | Higher ITAVM (275 A @ 85 °C); lower RthJC (0.115 K/W); uses copper-molybdenum baseplate instead of AlN | Requires reinforced isolation barrier due to non-insulated baseplate; not suitable for direct-grounded heatsink mounting | Choose for higher continuous current demand where external isolation can be implemented; verify creepage distance compliance |
Compared with TT251N16KOFHPSA1, TD251N16KOFHPSA1 offers identical electrical and thermal specs but with updated production traceability coding; versus SKKT251/16E, it trades slightly lower current rating for integrated baseplate isolation-reducing system-level insulation complexity.
Availability
TD251N16KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, crowbar protection circuits, and static AC switches requiring stable component supply across multi-year industrial equipment lifecycles.
Supply support for TD251N16KOFHPSA1 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 applications.
This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized phase-angle control in motor drives, power conditioning, and grid infrastructure systems.
FAQ
What is the maximum allowable junction temperature for TD251N16KOFHPSA1?
The maximum junction temperature (Tvj max) is 125 °C, as specified in the Infineon technical information document revision 3.2. This limit applies under all operating conditions including surge events. Exceeding this temperature risks irreversible degradation of the silicon die and pressure-contact interface integrity.
Does TD251N16KOFHPSA1 require forced air cooling?
No-forced air cooling is not mandatory. With a heatsink thermal resistance (RthCA) of ≤0.18 K/W and ambient temperature ≤40 °C, natural convection suffices for ITAV ≤180 A. At full 250 A rating, a heatsink with RthCA ≤0.12 K/W and moderate airflow (≥1 m/s) is recommended to maintain TC ≤85 °C.
Can TD251N16KOFHPSA1 be used in single-phase applications?
Yes-it supports single-phase full-wave (B2) bridge configurations. Each thyristor arm handles up to 250 A average current, enabling use in high-power single-phase rectifiers (e.g., battery chargers up to 150 kW) and phase-fired controllers for heating elements.
What gate drive voltage and current are required for reliable triggering?
A minimum gate trigger voltage of 2.0 V and peak gate current ≥1 A with di/dt ≥1 A/µs are required for guaranteed turn-on at Tvj = 125 °C. The gate characteristic curve (vG vs iG) shows reliable triggering occurs above the "a–d" power dissipation envelope, with 10 ms pulses limited to 40 W.
TD251N16KOFHPSA1 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:
- 1.8 kV
- Current - On State (It (AV)) (Max):
- 250 A
- Current - On State (It (RMS)) (Max):
- 410 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 200 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 9100A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
TD251N16KOFHPSA1 FAQ
1.How can I place an order for TD251N16KOFHPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TD251N16KOFHPSA1 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 TD251N16KOFHPSA1 reliable?
The price and inventory of TD251N16KOFHPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD251N16KOFHPSA1 is usually 5 days.
3.What payment methods are accepted for TD251N16KOFHPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD251N16KOFHPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TD251N16KOFHPSA1?
TD251N16KOFHPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TD251N16KOFHPSA1 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 TD251N16KOFHPSA1?
For technical support, including TD251N16KOFHPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD251N16KOFHPSA1 requirements.
6.How does Aetrix verify that TD251N16KOFHPSA1 is sourced from the original manufacturer or authorized distributors?
All TD251N16KOFHPSA1 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 TD251N16KOFHPSA1 meets industry standards.
7.What is the process for return or replacement of TD251N16KOFHPSA1?
All TD251N16KOFHPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TD251N16KOFHPSA1, 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 TD251N16KOFHPSA1 part is unused and in its original packaging.
Return procedure for TD251N16KOFHPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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