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Infineon Technologies STT800N16P55XPSA2
- Part No.:
- STT800N16P55XPSA2
- Manufacturer:
- Infineon Technologies
- Category:
- SCRs - Modules
- Package:
- Module
- Datasheet:
-
STT800N16P55XPSA2.pdf
- Description:
- THYR / DIODE MODULE DK
- Quantity:
- Payment:
- Shipping:
Inventory:6,097
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Product details
Overview
STT800N16P55XPSA2 from Infineon Technologies is a pressure-contact soft starter module integrating two anti-parallel thyristor arms in a single housing, rated for 1600 V repetitive blocking voltage (VDRM/VRRM), 800 A overload current (21 s), and 6300 A non-repetitive surge current (ITSM). It features an integrated optimized heatsink, Advanced Medium Power Technology (AMPT), and is designed for industrial motor soft-start and bypass switching applications.
For engineers reviewing the STT800N16P55XPSA2 datasheet, STT800N16P55XPSA2 pinout, STT800N16P55XPSA2 application, or STT800N16P55XPSA2 equivalent, key selection criteria include verified thermal resistance (RthJA = 0.196 K/W at 21 s), gate trigger parameters (IGT ≤ 200 mA, VGT ≤ 2 V), on-state voltage (VT ≤ 1.56 V at 800 A), and critical dv/dt capability (1000 V/µs).
Technical Context
This module implements a dual-arm, anti-parallel thyristor configuration with pressure-contact Si-pellet interconnection, enabling high-current commutation without wire bonds. Its design supports forced-air-cooled static switching with validated transient thermal impedance (ZthJA) profiles across conduction angles (Θ = 30°–180°) and airflow velocities up to 7.5 m/s.
Gate control follows standard phase-controlled SCR triggering: latching current (IL ≤ 1200 mA), holding current (IH ≤ 300 mA), and turn-off time (tq ≈ 250 µs at Tvj = 125°C) are specified under defined commutation conditions (vRM = 100 V, -diT/dt = 10 A/µs).
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 3-phase systems with safety margin) |
| Ioverload (21 s) | 800 A - Sustained RMS current rating for soft-start duty cycle; enables controlled acceleration of motors up to ~500 kW at 690 VAC |
| ITSM (10 ms) | 6300 A - Non-repetitive surge current capacity; withstands motor locked-rotor currents during start-up transients |
| RthJA (21 s) | 0.196 K/W - Junction-to-ambient thermal resistance under DC load and 3.6 m/s airflow; determines required heatsink size and cooling design |
| (dvD/dt)cr | 1000 V/µs - Critical rate-of-rise of off-state voltage; ensures reliable blocking under fast-switching EMI or inductive load transients |
| VT (800 A) | ≤1.56 V - On-state voltage drop at full overload; directly impacts conduction loss (Pcond ≈ 1.25 kW per arm at 800 A) |
| IGT / VGT | ≤200 mA / ≤2 V - Maximum gate trigger current/voltage at 25°C; defines minimum driver strength required for reliable turn-on |
Pinout & Package
STT800N16P55XPSA2 uses a pressure-contact, double-sided cooled module package with isolated copper baseplate (see Infineon Annex drawing). Electrical terminals are M6 screw connections for main power (A1/K1, A2/K2 per arm); control terminals conform to DIN 46244 A (2.8 × 0.8 mm flat blade) for gate inputs (G1, G2, K1, K2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 / K1 | Anode/Cathode of Arm 1 | Main current path for first thyristor arm; rated for bidirectional conduction when paired with A2/K2 in anti-parallel |
| A2 / K2 | Anode/Cathode of Arm 2 | Complementary arm completing full-wave AC switching; enables zero-crossing phase control in soft starter topology |
| G1 / G2 | Gate inputs | Isolated low-energy trigger inputs; require ≥1 A pulse with di/dt ≥ 1 A/µs for reliable latching (per IEC 747-6) |
| K1 / K2 | Common cathode reference | Shared cathode return for gate drive circuitry; must be referenced to heatsink potential per isolation requirements |
Key Features
| Feature | Design Value |
|---|---|
| Pressure contact technology | Eliminates wire bonds and solder joints between Si die and baseplate, improving thermal cycling reliability (>100,000 cycles at ΔTj = 100 K) |
| Integrated optimized heatsink | Single-piece copper baseplate with machined fin geometry; achieves RthJA = 0.196 K/W at 3.6 m/s airflow without external heatsink add-ons |
| Advanced Medium Power Technology (AMPT) | Optimized emitter geometry and lifetime control enabling high ITSM/Ioverload ratio (7.9×) while maintaining low VT and rT |
| Gate-controlled commutated turn-off | tq = 250 µs typical at 125°C junction temperature; enables precise phase-angle control down to <5° resolution in soft-start firmware |
Applications
| Motor Soft Starter | Bypass Switch |
|---|---|
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 module performing phase-angle controlled AC voltage reduction across stator windings. Use Value: Reduces peak inrush current from 6–8× FLC to ≤3× FLC, extending motor insulation life and avoiding upstream breaker trips. | Use Scenario: Bypassing thyristors after motor reaches full speed to eliminate conduction losses and heat generation. IC Role / Device Role / Timing Role: High-current static switch maintaining closed state during steady-state operation; triggered by auxiliary contactor logic. Use Value: Enables >99% system efficiency at full load by eliminating 1.25 kW/arm conduction loss during continuous run. |
| Static Power Controller | Industrial Heating Control |
Use Scenario: Precise regulation of resistive or inductive load power in HVAC dampers, conveyor drives, or pump speed control. IC Role / Device Role / Timing Role: Phase-controlled AC power modulator delivering variable RMS output via firing angle adjustment. Use Value: Achieves ±0.5% power stability over ambient range (-40°C to +125°C case) due to low rT (0.83 mΩ) and stable VT. | Use Scenario: Duty-cycle and phase-angle combined control of industrial heating elements (e.g., silicon carbide, molybdenum disilicide). IC Role / Device Role / Timing Role: High-durability switching element handling repeated thermal cycling and high peak currents in furnace zones. Use Value: Withstands 155°C junction temperature after start (Tvj max st) and 1000 V/µs dv/dt transients common in transformer-coupled heater supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor-based soft starter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STT1000N16P55XPSA2 | Higher Ioverload (1000 A/21 s) and ITSM (7500 A), identical VDRM and package | Supports larger motors (up to ~630 kW) and longer acceleration times; requires higher gate drive energy | Select when system demands >800 A sustained soft-start current or extended overload duration |
| TT122N16KOF | Discrete TO-247 thyristor (1200 A ITSM, 1600 V VDRM); no integrated heatsink or pressure contact | Requires external heatsink mounting, thermal interface design, and parallel device balancing for equivalent current rating | Select for cost-sensitive, lower-volume designs where board-level integration and thermal management are handled separately |
Compared with STT800N16P55XPSA2, the STT1000N16P55XPSA2 offers headroom for higher-power soft starts but increases gate drive burden, while the TT122N16KOF shifts thermal and layout responsibility to the designer-making the STT800N16P55XPSA2 optimal for compact, pre-validated, high-reliability soft starter modules.
Availability
STT800N16P55XPSA2 is available at Aetrix Electronics and suitable for industrial motor control, static switching, and power regulation applications requiring stable component supply, long-term lifecycle support, and traceable manufacturing origin.
Supply support for STT800N16P55XPSA2 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 renewable energy markets.
This part belongs to Infineon's "Soft Starter Module" product line, engineered specifically for robust, maintenance-free AC motor starting and static switching in harsh industrial environments-emphasizing pressure-contact reliability, integrated thermal performance, and standardized gate drive interfaces.
FAQ
What is the maximum allowable junction temperature during motor start-up?
The STT800N16P55XPSA2 permits a peak junction temperature of 155°C immediately after start-up (Tvj max st), provided vR/vD remains below 80% of VRRM/VDRM. This rating is validated for 21-second overload events and enables aggressive acceleration profiles without thermal shutdown, assuming proper heatsink mounting and airflow per datasheet curves.
Does this module require external snubber circuits?
No external RC snubbers are required for standard soft-start operation due to its validated (dvD/dt)cr of 1000 V/µs and built-in recovery charge (Qr) characteristics. However, snubbers are recommended when switching highly inductive loads (e.g., transformers) or operating above 3.6 m/s airflow where ZthJA transient response changes significantly.
How is gate drive isolation implemented in this module?
Gate terminals (G1/G2) are electrically isolated from the main power terminals and baseplate per DIN EN 60747-5-5 (VIORM = 3750 V RMS). Isolation is achieved via internal reinforced insulation within the molded housing-not external optocouplers-enabling direct connection to microcontroller GPIOs through appropriate level-shifting and pulse transformers per Infineon AN2017-07.
Can STT800N16P55XPSA2 be paralleled with another unit for higher current?
Parallel operation is not supported. The module integrates two anti-parallel arms in one sealed package with shared thermal path and gate timing; paralleling introduces uncontrolled current imbalance due to parameter spread and thermal coupling. For >800 A applications, select the STT1000N16P55XPSA2 or use multi-module rack designs with independent control and sensing per arm.
STT800N16P55XPSA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- TT
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Active
- Structure:
- 1-Phase Controller - All SCRs
- Number of SCRs, Diodes:
- 2 SCRs
- Voltage - Off State:
- 1.6 kV
- Current - On State (It (AV)) (Max):
- -
- Current - On State (It (RMS)) (Max):
- -
- Voltage - Gate Trigger (Vgt) (Max):
- 2 V
- Current - Gate Trigger (Igt) (Max):
- 200 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 6300A @ 50Hz
- Current - Hold (Ih) (Max):
- 300 mA
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
STT800N16P55XPSA2 FAQ
1.How can I place an order for STT800N16P55XPSA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for STT800N16P55XPSA2 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 STT800N16P55XPSA2 reliable?
The price and inventory of STT800N16P55XPSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STT800N16P55XPSA2 is usually 5 days.
3.What payment methods are accepted for STT800N16P55XPSA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STT800N16P55XPSA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STT800N16P55XPSA2?
STT800N16P55XPSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STT800N16P55XPSA2 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 STT800N16P55XPSA2?
For technical support, including STT800N16P55XPSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STT800N16P55XPSA2 requirements.
6.How does Aetrix verify that STT800N16P55XPSA2 is sourced from the original manufacturer or authorized distributors?
All STT800N16P55XPSA2 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 STT800N16P55XPSA2 meets industry standards.
7.What is the process for return or replacement of STT800N16P55XPSA2?
All STT800N16P55XPSA2 units undergo pre-shipment inspection (PSI). If there is an issue with STT800N16P55XPSA2, 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 STT800N16P55XPSA2 part is unused and in its original packaging.
Return procedure for STT800N16P55XPSA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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