Knowles 3825YA Safety Certified MLCC Capacitors

Introduction

Knowles 3825YA Safety Certified MLCC Capacitors are compact surface-mount capacitors designed for safety-critical filtering, suppression, and isolation-related circuit functions. Their low-profile multilayer ceramic construction helps designers add robust capacitance to space-constrained electronic assemblies.

Part Description

The 3825YA series is a multilayer ceramic capacitor (MLCC) family from Knowles. These capacitors incorporate FlexiCap™ technology, which is designed to reduce the risk of cracking caused by board flexure, mechanical stress, or thermal expansion differences between the capacitor and the PCB.

The series is certified to UL and TUV safety standards, making it appropriate for designs where approved safety capacitors are needed. Its surface-mount format supports automated assembly while helping reduce board area and profile compared with larger through-hole alternatives.

Key characteristics include:

• Multilayer ceramic capacitor construction
• Surface-mount, low-profile package format
• FlexiCap™ termination technology for improved mechanical robustness
• UL and TUV safety certification
• Suitable for high-voltage and transient-related applications
• Designed for compact power conversion, communications, and EV electronics

Applications

Potential applications for Knowles 3825YA capacitors include:

• AC-DC power supplies
• Mains-input filtering circuits
• EMI and RFI suppression
• Safety-rated line-to-line or line-to-earth filtering
• Transient protection networks
• Modems and broadband communication equipment
• Routers, switches, and networking hardware
• Electric vehicle high-voltage battery systems
• High-voltage DC bus filtering
• Industrial control power supplies

Industries

Possible industries using these capacitors include:

• Consumer electronics
• Telecommunications
• Data communications and networking
• Automotive and electric vehicles
• Industrial automation
• Power electronics
• Renewable energy systems
• Smart grid and utility equipment
• Medical electronics
• Building and home automation

Usage Ideas

1. Compact AC-DC Adapter
   Use a 3825YA capacitor in the input filtering stage of a compact AC-DC power supply to help address conducted noise while meeting safety requirements.

2. EV Battery Management System
   Incorporate the capacitor into a high-voltage battery management or monitoring circuit where compact safety-certified components and resistance to PCB stress are beneficial.

3. Industrial Ethernet Switch
   Add the capacitor to an industrial networking device for EMI suppression and transient-related filtering around power-entry or communications circuitry.

Conclusion

Knowles 3825YA Safety Certified MLCC Capacitors combine a compact surface-mount form factor with UL and TUV safety certification. Their FlexiCap™ technology helps improve reliability in applications exposed to PCB flexing and mechanical stress. These features make the series a practical option for power supplies, networking products, high-voltage automotive electronics, and other demanding safety-focused designs.