Vishay Intertechnology Expands 193 PUR-SI Series with New Voltage Ratings
MALVERN, Pa., Jan. 14, 2026 (GLOBE NEWSWIRE) — Vishay Intertechnology, Inc. (NYSE: VSH) has announced an extension of its popular 193 PUR-SI series of miniature snap-in power aluminum electrolytic capacitors. The addition includes new voltage ratings of 550 V and 600 V, designed to cater to the evolving demands of modern electronic applications.
Enhanced Performance for Modern Applications
The latest Vishay BCcomponents devices provide a significant advancement, offering up to 30% higher ripple current compared to standard options within similar size categories. These enhancements extend the useful life of the capacitors, positioning them as preferable choices for various applications.
Before this development, designers commonly used three 400 V to 450 V capacitors in series to manage DC bus voltages up to 1100 V. This traditional approach typically required voltage balancing resistors for stability, increasing design complexity and potential failure points. The new 193 PUR-SI series capacitors simplify circuit design, allowing for fewer components and eliminating the need for additional voltage balancing circuits, effectively saving PCB space and reducing Bill of Materials (BOM) costs.
Specifications and Key Features
The 193 PUR-SI series capacitors are engineered to withstand demanding switching currents prevalent in high-power converters. They can handle ripple currents up to 3.27 A, ensuring reliability in critical applications. These devices boast a long operational lifespan of 5000 hours at +105 °C, making them suitable for environments that require over 25 years of operational capability at ambient temperatures up to +60 °C.
Technical Specifications
- Capacitance Range: 47 µF to 820 µF
- Rated Voltage: 400 V to 450 V; 500 V to 600 V
- Maximum ESR at 100 Hz: 120 mΩ to 3365 mΩ
- Category Temperature Range: -40 °C to +105 °C
- Maximum Impedance at 10 kHz: 80 mΩ to 2700 mΩ
- Useful Life at +105 °C: 5000 hours
Applications and Industry Relevance
The 193 PUR-SI series capacitors are particularly well-suited for various applications, including:
- Smoothing and buffering in switch mode power supplies
- Battery management systems (BMS) for electric (EV) and hybrid electric (HEV) vehicles
- Industrial motor drives and air conditioning systems
- Solar inverters and medical equipment
- Uninterruptible power supplies (UPS) and welding equipment
These capacitors incorporate polarized aluminum electrolytic technology with a non-solid electrolyte, enabling their effectiveness in DC-Link filtering.
Availability and Company Overview
Samples of the extended 193 PUR-SI series capacitors are currently available through catalog houses in limited quantities, with production volumes ready for order, featuring lead times of 18 weeks.
As a leader in the industry, Vishay Intertechnology, Inc., listed on the NYSE as VSH, manufactures one of the world's most extensive portfolios of discrete semiconductors and passive electronic components, addressing the needs of sectors including automotive, industrial, telecommunications, military, aerospace, and medical markets. To learn more about Vishay, visit www.Vishay.com.