Circuit Protection with CR Micro

Protection Device Overview

TVS Diodes

  • Unidirectional and bidirectional types
  • Voltage ratings from 5V to 440V
  • Peak pulse power up to 6600W

ESD Protection

  • Low capacitance for high-speed interfaces
  • Array devices for multi-line protection
  • AEC-Q101 qualified for automotive

Selection Criteria

  • Working Voltage - Above normal operating voltage
  • Breakdown Voltage - Below maximum device rating
  • Clamping Voltage - Protects sensitive circuits
  • Peak Pulse Current - Handles expected transients
  • Response Time - Fast enough for application

    • Application Examples

    USB Port Protection

    • ESD array for data lines
    • TVS for VBUS protection

    Power Input Protection

    • TVS for surge protection
    • Series resistor for current limiting

    Motor Drive Protection

    • TVS for inductive kickback
    • RC snubbers for damping

    Layout Guidelines

    • Place protection devices close to connectors
    • Minimize parasitic inductance
    • Use wide traces for high current
    • Implement proper grounding

    Conclusion

    CR Micro protection devices provide cost-effective circuit protection.