Standard of Excellence: Finding and Developing Future Leaders in Manufacturing
Global Sourcing Spotlight: Navigating the Variables of Holiday Schedules in Global Sourcing
Nolan’s Notes: Soldering Technologies
Knowles Extends Operating Life of Electronic Devices with New Arc Suppressor/Snubber Network Devices
August 8, 2024 | PRNewswireEstimated reading time: 1 minute
Knowles Corporation, a market leader and global provider of advanced micro-acoustic microphones and speakers, audio solutions, and high-performance capacitors and RF products, announced the QAS Series, a new line of RC-type Arc Suppressor/Snubber components that extend the operating life of electronic and electro-mechanical devices.
Knowles' Cornell Dubilier brand QAS Series devices provide single-device RC networks in two-lead radial packages. QAS networks extend the operating life of electronic and electro-mechanical devices by reducing and/or eliminating electrical arcing at the point of electrical contact. Without a snubber circuit, arcing often leads to early failures in relays, switch contacts, and solid-state components such as SCRs and TRIACs.
When the contacts in an arc suppression circuit open, a voltage is applied across the capacitor instead of the relay contacts. This prevents arcing because the capacitor charges faster than the contacts open. When the contacts close, the inrush current from the charged capacitor and source can exceed the safe conductance of the contacts. The resistor in the network limits the inrush current significantly, reducing the arc produced at contact closure, and extends the service life of the contacts. In practical applications, for DC voltage, the RC network is typically connected across the relay contacts, and for AC voltage, it is connected across the load.
The QAS is also effective at reducing spark-generated EMI/RFI that can cause interference with the operation of a circuit.
Each device consists of metallized polyester capacitor RC network, coated with a flame-retardant epoxy. Having a single device containing an RC network has advantages for circuit designers rather than building discrete networks. The single device is more compact, pretested, and environmentally more robust. The QAS product line includes 24 devices with:
- Capacitance values of up to 1.0uF
- Resistor values up to 680 ohms,
- Rated voltage options up to 1600 Vdc/660 Vac, 60 Hz
- Operating temperature range –55 °C to +85 °C at full rated voltage.
Share on:
Suggested Items
Würth Elektronik Expands Its FPC Connector Family
10/30/2024 | Würth ElektronikThe selection of connectors for flat flexible cables (FFC) and flexible printed circuits (FPC) from Würth Elektronik is getting even larger.
Intel Demonstrates Breakthroughs in Next-Generation Transistor Scaling for Future Nodes
12/11/2023 | IntelIntel unveiled technical breakthroughs that maintain a rich pipeline of innovations for the company’s future process roadmap, underscoring the continuation and evolution of Moore’s Law.
ZESTRON’s Michael Kövi to Present at SMTAI 2019
09/17/2019 | ZESTRONZESTRON has announced that Michael Kövi, application engineer, ZESTRON Europe, will be presenting “Handling Technical Cleanliness in Electronic Production” at SMTA International. Kövi’s presentation will be on Thursday, September 26, during session MFX7 – Cleaning: Challenges.
Ultra-Clean Fabrication Platform Produces Nearly Ideal 2D Transistors
05/20/2019 | Columbia EngineeringAn enhanced optical microscope image of a Hall-bar structure used to characterize transistor properties for devices made with ultraclean transferred contacts. The long radial lines, made from deposited gold, connect the small contacts at the center of the device to large probe pads for easy measurements.
Thin Films for More Efficient Solar Cells
10/08/2018 | KAUSTThe efficiency of solar cells can be increased by thin-film contacts developed by researchers at KAUST.