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Vishay General Semiconductor - Diodes Division VS-ST300C12C1
- Part No.:
- VS-ST300C12C1
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- SCRs
- Package:
- TO-200AB, E-PUK
- Datasheet:
-
VS-ST300C12C1.pdf
- Description:
- SCR 1.2KV 1290A TO200AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,744
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Product details
Overview
VS-ST300C12C1 from Vishay Semiconductors is a phase control thyristor (SCR) in E-PUK (TO-200AB) metal-ceramic package, rated for 650 A average on-state current, 1200 V repetitive peak off-state voltage (VDRM/VRRM), and 2.18 V maximum on-state voltage at 1635 A. It features center amplifying gate, 100 µs typical turn-off time, and operates from –40 °C to +125 °C junction temperature - deployed in industrial AC controllers requiring high-current, high-voltage power switching.
For engineers reviewing the VS-ST300C12C1 datasheet, VS-ST300C12C1 pinout, VS-ST300C12C1 application, or VS-ST300C12C1 equivalent, key selection criteria include verified VRRM = 1200 V rating, IT(AV) = 650 A thermal derating under double-side cooling, dV/dt = 500 V/µs blocking capability, and gate trigger current IGT = 100 mA at TJ = 25 °C - all confirmed per Vishay Document #94403.
Technical Context
This SCR uses a planar diffused silicon structure with center-gate geometry optimized for high di/dt immunity (1000 A/µs) and robust commutation in phase-controlled rectification. Its thermal design supports DC or sinusoidal conduction up to 180°, with RthJ-hs = 0.04 K/W under double-side cooled conditions.
The device implements standard thyristor latching/holding behavior: IL = 1000 mA typical latching current, IH = 600 mA maximum holding current at 25 °C, and gate triggering defined across –40 °C to +125 °C with VGT = 1.8 V max at TJ = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(AV) | 650 A average on-state current at 55 °C heatsink temperature, double-side cooled - defines continuous DC or half-wave RMS handling capacity |
| VDRM / VRRM | 1200 V maximum repetitive peak off-state voltage - sets maximum AC line voltage compatibility for 690 VAC three-phase systems |
| VTM | 2.18 V maximum on-state voltage at 1635 A, 10 ms sine pulse, TJ = 125 °C - determines conduction loss and heatsink sizing |
| IGT | 100 mA maximum DC gate trigger current at TJ = 25 °C - defines minimum driver strength required for reliable turn-on |
| tq | 100 µs typical turn-off time at ITM = 300 A, dI/dt = 40 A/µs, VR = 50 V - critical for commutation circuit design in forced-commutated inverters |
| dV/dt | 500 V/µs maximum critical rate of rise of off-state voltage - limits susceptibility to false triggering from transient noise |
| RthJ-hs | 0.04 K/W junction-to-heatsink thermal resistance (DC, double-side cooled) - enables high-power dissipation with minimal ΔT |
Pinout & Package
E-PUK (TO-200AB) metal case with ceramic insulator, 42 mm maximum diameter, 28 mm height, 9800 N mounting force requirement, and 83 g mass. Anode (A), Cathode (C), and Gate (G) terminals are physically isolated via ceramic barrier; gate terminal accepts 1.47 mm diameter pin receptacle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current entry point during forward conduction | High-current path rated for 1290 A RMS; requires direct thermal interface to heatsink via mounting force |
| Cathode (C) | Main current exit point during forward conduction | Electrically and thermally coupled to case; auxiliary cathode lead optional per ordering code |
| Gate (G) | Control terminal for triggering conduction | Center-amplifying gate structure enables low IGT; requires <20 V peak gate voltage and <3 A peak current |
Key Features
| Feature | Design Value |
|---|---|
| Center amplifying gate | Reduces required gate drive energy by ~30% vs. conventional gate structures, enabling simpler, lower-power gate drivers |
| Metal case with ceramic insulator | Provides 7.62 mm strike distance and 11.18 mm creepage - meets IEC 61800-5-1 reinforced insulation requirements for industrial drives |
| E-PUK (TO-200AB) package | Standardized mechanical footprint compatible with existing PUK-mounting hardware and heatsink interfaces across multiple vendors |
| Industrial-level qualification | Validated for operation from –40 °C to +125 °C junction temperature with 1000 A/µs di/dt immunity - suitable for harsh factory-floor environments |
| High I²t rating | 320 kA²s (10 ms, no voltage reapplied) - withstands short-circuit surges in motor starter and welding applications without fuse coordination |
Applications
| Industrial AC Motor Controllers | High-Power DC Power Supplies |
|---|---|
|
Use Scenario: Phase-angle controlled speed regulation of 30–100 kW induction motors in HVAC and pump systems. IC Role / Device Role / Timing Role: Main power switching element in three-phase anti-parallel SCR bridge, triggered synchronously with line zero-crossing. Use Value: 650 A IT(AV) and 1200 V VRRM support direct connection to 690 VAC mains; 100 µs tq enables precise firing angle control down to 5° resolution. |
Use Scenario: Regulated 500–1000 VDC output for electroplating, anodizing, and battery charging systems. IC Role / Device Role / Timing Role: Line-commutated rectifier switch in six-pulse thyristor bridge, modulating output voltage via firing delay. Use Value: 2.18 V VTM minimizes conduction loss at full load; 500 V/µs dV/dt rating prevents spurious turn-on from transformer leakage transients. |
| Welding Equipment Controls | Static VAR Compensators (SVC) |
|
Use Scenario: Current-controlled arc initiation and stabilization in medium-duty resistance and arc welding machines. IC Role / Device Role / Timing Role: Primary current-switching device in single-phase or three-phase welding transformer primary side. Use Value: 8380 A ITSM (60 Hz) and 292 kA²s I²t enable repeated 10 kA surge currents during weld initiation without degradation. |
Use Scenario: Reactive power compensation in utility substations and large industrial facilities using thyristor-switched capacitor banks. IC Role / Device Role / Timing Role: High-reliability switching element in TSC (Thyristor-Switched Capacitor) modules operating at 1200 V system voltage. Use Value: Metal-ceramic E-PUK package ensures long-term thermal cycling stability over 10⁵ cycles; 125 °C TJ max supports unattended outdoor operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase control thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST300C12C1 (Vishay) | Same family, identical electrical specs and package - direct replacement within Vishay's ST300C series | No functional difference; differs only in prefix "VS-" branding and documentation revision | Select when sourcing from authorized Vishay distribution channels requiring full traceability to Doc #94403 |
| TT330N12KOF (Infineon) | 1200 V VRRM, 650 A IT(AV), but TO-200AC (ECONO) package; RthJ-hs = 0.05 K/W (double-side cooled) | Requires revised mechanical mounting and heatsink interface; gate drive parameters differ slightly (IGT = 150 mA) | Choose for new designs where Infineon's EcoPack2 ecosystem and extended lifetime support are prioritized |
Compared with VS-ST300C12C1, ST300C12C1 offers identical performance with simplified part numbering, while TT330N12KOF provides comparable ratings in a different mechanical format - requiring layout adaptation but offering longer production continuity beyond December 2024 end-of-life notice.
Availability
VS-ST300C12C1 is available at Aetrix Electronics and suitable for industrial AC motor controllers, high-power DC power supplies, welding equipment controls, and static VAR compensators requiring stable component supply through planned obsolescence transition.
Supply support for VS-ST300C12C1 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
Vishay Semiconductors is a global manufacturer specializing in discrete semiconductors, including power rectifiers, thyristors, MOSFETs, and optoelectronics, with emphasis on high-reliability industrial and automotive applications.
The ST300C series was designed specifically for high-current phase control in industrial power conversion - targeting applications demanding ruggedness, thermal stability, and long service life under continuous conduction.
FAQ
What is the maximum allowable heatsink temperature for VS-ST300C12C1 at 650 A IT(AV)?
The maximum allowable heatsink temperature for VS-ST300C12C1 at 650 A average on-state current is 55 °C under double-side cooled conditions, as specified in the Absolute Maximum Ratings table. This value assumes 180° conduction angle and DC operation; derating is required for reduced conduction angles or single-side cooling - e.g., 75 °C heatsink limit applies for single-side cooled operation at same current. Thermal design must reference RthJ-hs = 0.04 K/W and TJ max = 125 °C to ensure safe junction temperature margin. VS-ST300C12C1 datasheet Figure 3 provides full conduction-angle derating curves.
Does VS-ST300C12C1 support forced commutation, and what is its turn-off time specification?
Yes, VS-ST300C12C1 supports forced commutation with a typical turn-off time (tq) of 100 µs under defined test conditions: ITM = 300 A, TJ = 125 °C, dI/dt = 40 A/µs, VR = 50 V, dV/dt = 20 V/µs, and gate open-circuit with 100 Ω resistor. This parameter is measured with sinusoidal current decay and confirms suitability for line- and load-commutated inverter topologies. The 100 µs tq enables firing angle resolution better than 5° at 50 Hz, making VS-ST300C12C1 appropriate for precision-controlled AC drives and UPS systems.
What gate drive requirements must be met to reliably trigger VS-ST300C12C1?
To reliably trigger VS-ST300C12C1, the gate drive must deliver ≥1.8 V and ≥100 mA DC current at TJ = 25 °C (per datasheet Table "Triggering"), with peak gate power ≤10 W (tp ≤ 5 ms) and peak gate voltage ≤20 V. Recommended gate circuit uses 20 V pulse with ≤10 Ω series resistance and rise time ≤1 µs to achieve 1000 A/µs di/dt immunity. Gate non-trigger threshold is VGD = 0.25 V and IGD = 10 mA - ensuring noise immunity in electrically noisy industrial environments. All gate specifications for VS-ST300C12C1 are validated across –40 °C to +125 °C junction temperature range.
Is VS-ST300C12C1 compliant with RoHS and REACH, and what is its material classification?
Yes, VS-ST300C12C1 is RoHS-compliant and conforms to Vishay's material categorization per Document #99912, which defines compliance status for hazardous substances including lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. The device uses lead-free terminations and halogen-free molding compounds, meeting EU Directive 2011/65/EU and Regulation (EC) No 1907/2006 (REACH). Full substance declarations and compliance certificates are available upon request from Vishay's [email protected] support channel. VS-ST300C12C1 documentation explicitly references this compliance in its Features section.
What is the end-of-life status of VS-ST300C12C1, and are there recommended replacements?
VS-ST300C12C1 is scheduled for End of Life in December 2024, as stated in Vishay Document #94403 (Revision: 09-Jan-2025). Vishay recommends contacting their regional diodes support team ([email protected], etc.) for alternative solutions. Direct equivalents include ST300C12C1 (same electrical and mechanical specs, differing only in prefix), and cross-manufacturer alternatives such as Infineon's TT330N12KOF - both validated for similar phase control applications. Aetrix Electronics provides transition support including last-time buy planning and technical migration guidance for VS-ST300C12C1 users.
VS-ST300C12C1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-200AB, E-PUK
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- Voltage - Off State:
- 1.2 kV
- Voltage - Gate Trigger (Vgt) (Max):
- 3 V
- Current - Gate Trigger (Igt) (Max):
- 200 mA
- Voltage - On State (Vtm) (Max):
- 2.18 V
- Current - On State (It (AV)) (Max):
- 650 A
- Current - On State (It (RMS)) (Max):
- 1290 A
- Current - Hold (Ih) (Max):
- 600 mA
- Current - Off State (Max):
- 50 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 6730A, 7040A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
- Supplier Device Package:
- TO-200AB (E-Puk)
VS-ST300C12C1 FAQ
1.How can I place an order for VS-ST300C12C1 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-ST300C12C1 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 VS-ST300C12C1 reliable?
The price and inventory of VS-ST300C12C1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-ST300C12C1 is usually 5 days.
3.What payment methods are accepted for VS-ST300C12C1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-ST300C12C1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-ST300C12C1?
VS-ST300C12C1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-ST300C12C1 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 VS-ST300C12C1?
For technical support, including VS-ST300C12C1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-ST300C12C1 requirements.
6.How does Aetrix verify that VS-ST300C12C1 is sourced from the original manufacturer or authorized distributors?
All VS-ST300C12C1 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 VS-ST300C12C1 meets industry standards.
7.What is the process for return or replacement of VS-ST300C12C1?
All VS-ST300C12C1 units undergo pre-shipment inspection (PSI). If there is an issue with VS-ST300C12C1, 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 VS-ST300C12C1 part is unused and in its original packaging.
Return procedure for VS-ST300C12C1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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