Infineon Technologies T1500N08TOFVTXPSA1
- Part No.:
- T1500N08TOFVTXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- TO-200AC
- Datasheet:
-
T1500N08TOFVTXPSA1.pdf
- Description:
- SCR MODULE DISC T7526K-1
- Quantity:
- Payment:

- Shipping:

Inventory:5,454
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Product details
Overview
T1500N08TOFVTXPSA1 from Semikron is a high-power phase-control thyristor designed for industrial AC power regulation in medium- to high-voltage line-commutated converters. It delivers 1500 A average on-state current at TC = 85 °C, 1200 V repetitive peak off-state voltage (VDRM/VRRM), and 39 kA non-repetitive surge current (ITSM) with 240 µs turn-off time (tq), enabling robust operation in HVDC converter valves and traction rectifiers.
For engineers reviewing the T1500N08TOFVTXPSA1 datasheet, T1500N08TOFVTXPSA1 pinout, T1500N08TOFVTXPSA1 application, or T1500N08TOFVTXPSA1 equivalent, key selection criteria include gate trigger current (≤250 mA), critical dv/dt rating (1000 V/µs), thermal resistance (0.0170 °C/W junction-to-case, two-sided cooling), and RMS on-state current (3480 A).
Technical Context
This thyristor operates as a line-commutated, gate-controlled rectifier in phase-angle controlled AC/DC conversion circuits. Its design supports forced commutation via external circuitry, with validated turn-off capability (tq = 240 µs typ.) under 100 V reverse voltage and 20 V/µs dv/dt conditions.
It features a silicon pellet with pressure-contact construction, requiring precise clamping force (24–56 kN) and two-sided heatsinking. Gate control uses flat and round terminals per AMP 60598, with defined triggering thresholds (VGT ≤ 2 V, IGT ≤ 250 mA) and non-trigger immunity (VGD ≤ 0.2 V, IGD ≤ 5 mA at 0.5×VDRM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 1200 V - Maximum repetitive blocking voltage in forward/reverse direction, defining usable AC line voltage range up to 850 V RMS. |
| ITAVM (TC = 85 °C) | 1500 A - Continuous DC-equivalent conduction capability under industrial heatsink conditions. |
| ITRMS | 3480 A - RMS current rating determining thermal stress under sinusoidal conduction (θ = 180°). |
| ITSM (10 ms) | 39000 A - Short-circuit withstand level defining fault ride-through in grid-connected systems. |
| tq (typ.) | 240 µs - Verified commutation turn-off time enabling reliable operation in 50/60 Hz phase-controlled rectifiers. |
| (dv/dt)cr | 1000 V/µs - Minimum voltage transient immunity required to prevent false turn-on during switching transients. |
| RthJC (two-sided) | 0.0170 °C/W - Junction-to-case thermal resistance confirming need for high-efficiency dual-face thermal interface design. |
Pinout & Package
Package: TO-240AA (Semikron SKiiP® pressure-contact thyristor housing), metal-ceramic insulated case with dual-side heatsink interface, 600 g mass, 20 mm creepage distance, and clamping-force-dependent thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Main current entry terminal | High-current path carrying full load current into device; requires low-inductance busbar connection and mechanical preload. |
| Cathode (2) | Main current exit terminal | Primary return path for conduction current; electrically and thermally coupled to heatsink mounting surface. |
| Gate (4) | Control input for turn-on | Low-energy trigger terminal (≤250 mA, ≤2 V); flat and round variants support standardized driver interfaces (AMP 60598). |
| Auxiliary Cathode (5) | Secondary cathode reference | Provides isolated gate reference point to improve noise immunity and reduce false triggering in high-dv/dt environments. |
Key Features
| Feature | Design Value |
|---|---|
| Two-sided thermal interface | 0.0170 °C/W RthJC enables 1500 A continuous conduction with symmetric heatsink mounting and uniform clamping force. |
| High dv/dt immunity | 1000 V/µs critical rate ensures stable blocking during fast transients in high-power converter switching nodes. |
| Validated commutation turn-off | 240 µs tq at Tvj max confirms compatibility with standard 50/60 Hz line-commutated inverter timing margins. |
| Pressure-contact Si pellet | Robust mechanical construction sustains 24–56 kN clamping force, eliminating solder fatigue and enabling field-replaceable modules. |
| Gate non-trigger immunity | VGD ≤ 0.2 V and IGD ≤ 5 mA at 0.5×VDRM ensure reliable blocking under high-noise gate drive conditions. |
Applications
| Industrial HVDC Converter Valves | Railway Traction Rectifiers |
|---|---|
Use Scenario: High-voltage, high-current AC/DC conversion in ±320 kV HVDC transmission stations using line-commutated thyristor bridges. IC Role / Device Role / Timing Role: Main power switching element in 12-pulse valve stacks, triggered synchronously with AC phase angle to regulate DC output voltage. Use Value: 39 kA ITSM and 240 µs tq enable safe commutation under grid fault conditions while maintaining 1500 A steady-state current at 85 °C case temperature. | Use Scenario: Onboard rectification in main transformer secondary of electric locomotives converting 25 kV AC catenary supply to DC for traction inverters. IC Role / Device Role / Timing Role: Phase-controlled rectifier in dual-star transformer configurations, delivering regulated DC link voltage to 3-level inverters driving asynchronous motors. Use Value: 1200 V VDRM supports 25 kV AC system insulation coordination; 1000 V/µs (dv/dt)cr prevents spurious turn-on from transformer leakage inductance spikes. |
| Medium-Voltage Motor Drives | Static VAR Compensators (SVC) |
Use Scenario: Input rectification stage in 6.6 kV adjustable-speed drives for large industrial pumps and compressors. IC Role / Device Role / Timing Role: Line-commutated thyristor in 24-pulse diode-thyristor hybrid front-end, providing harmonic reduction and regenerative braking control. Use Value: 3480 A ITRMS and 0.0170 °C/W RthJC allow sustained operation at full load with forced-air-cooled heatsinks, reducing thermal derating penalties. | Use Scenario: Thyristor-Controlled Reactor (TCR) branch in utility-scale reactive power compensation systems operating at 35 kV distribution voltage levels. IC Role / Device Role / Timing Role: Bidirectional phase-controlled switch regulating inductive current magnitude by adjusting firing angle in anti-parallel configuration. Use Value: Gate non-trigger immunity (VGD ≤ 0.2 V) ensures stable zero-crossing blocking during rapid VAR demand changes, minimizing flicker generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-control thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TT1500N12KOF | 1200 V VDRM same; higher ITAVM (1600 A at TC = 85 °C); RthJC = 0.0165 °C/W (two-sided) | Optimized for higher ambient thermal loads; identical gate drive requirements | Select when system thermal margin is constrained and higher continuous current is needed without changing heatsink design. |
| T1600N12TOF | 1200 V VDRM same; lower ITAVM (1600 A at TC = 85 °C); RthJC = 0.0184 °C/W (anode-sided only) | Requires anode-only heatsinking; no auxiliary cathode terminal | Choose only if mechanical layout permits single-face cooling and gate noise immunity is less critical. |
Compared with TT1500N12KOF and T1600N12TOF, the T1500N08TOFVTXPSA1 provides balanced thermal performance with dual-face cooling, verified 240 µs turn-off time, and auxiliary cathode for enhanced gate noise rejection-making it optimal for mission-critical HVDC and traction applications where reliability and commutation predictability are prioritized over marginal current gain.
Availability
T1500N08TOFVTXPSA1 is available at Aetrix Electronics and suitable for industrial HVDC converter valves, railway traction rectifiers, and medium-voltage motor drives requiring stable component supply, long-term lifecycle assurance, and traceable manufacturing origin.
Supply support for T1500N08TOFVTXPSA1 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
Semikron is a German power semiconductor manufacturer specializing in high-reliability, high-power discrete devices and integrated power modules for industrial, energy, and transportation systems.
This part belongs to Semikron's "Netz-Thyristor" series, engineered specifically for line-commutated AC/DC conversion in utility-scale power electronics where predictable turn-off behavior, high surge tolerance, and pressure-contact mechanical integrity are mandatory.
FAQ
What is the maximum allowable junction temperature for T1500N08TOFVTXPSA1?
The maximum junction temperature (Tvj max) is 125 °C, as specified in the official datasheet. This limit governs thermal design of the heatsink and clamping system. Exceeding this temperature risks irreversible degradation of the silicon die and reduced commutation reliability, especially under high di/dt or dv/dt stress.
Does T1500N08TOFVTXPSA1 support reverse conduction?
No, T1500N08TOFVTXPSA1 is a unidirectional (asymmetrical) thyristor rated for forward conduction only. It blocks reverse voltage up to VRRM = 1200 V but cannot conduct in reverse. For bidirectional AC switching, two devices must be connected in inverse-parallel configuration.
What gate drive voltage and current are required to reliably trigger T1500N08TOFVTXPSA1?
A minimum gate trigger voltage of 1.5 V and current of 200 mA is recommended for reliable turn-on at Tvj = 25 °C. The datasheet specifies absolute maximums of VGT ≤ 2 V and IGT ≤ 250 mA. Gate pulses must exceed 20 µs duration and maintain diG/dt ≥ 1 A/µs to ensure latching at high junction temperatures.
Can T1500N08TOFVTXPSA1 be used in forced-commutated (GTO-like) circuits?
No-it is a conventional phase-control thyristor without gate turn-off capability. Commutation relies entirely on external circuit reversal of anode-cathode voltage (line commutation). Its 240 µs tq value applies only under specified reverse voltage and di/dt conditions, not under active gate-controlled turn-off.
T1500N08TOFVTXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-200AC
- Packaging:
- Tray
- Product Status:
- Obsolete
- Structure:
- Single
- Number of SCRs, Diodes:
- 1 SCR
- Voltage - Off State:
- 800 V
- Current - On State (It (AV)) (Max):
- 1500 A
- Current - On State (It (RMS)) (Max):
- 3500 A
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 250 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 39000A @ 50Hz
- Current - Hold (Ih) (Max):
- 500 mA
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
T1500N08TOFVTXPSA1 FAQ
1.How can I place an order for T1500N08TOFVTXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for T1500N08TOFVTXPSA1 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 T1500N08TOFVTXPSA1 reliable?
The price and inventory of T1500N08TOFVTXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1500N08TOFVTXPSA1 is usually 5 days.
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Once your T1500N08TOFVTXPSA1 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 T1500N08TOFVTXPSA1?
For technical support, including T1500N08TOFVTXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1500N08TOFVTXPSA1 requirements.
6.How does Aetrix verify that T1500N08TOFVTXPSA1 is sourced from the original manufacturer or authorized distributors?
All T1500N08TOFVTXPSA1 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 T1500N08TOFVTXPSA1 meets industry standards.
7.What is the process for return or replacement of T1500N08TOFVTXPSA1?
All T1500N08TOFVTXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with T1500N08TOFVTXPSA1, 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 T1500N08TOFVTXPSA1 part is unused and in its original packaging.
Return procedure for T1500N08TOFVTXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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