EZA-ST42AAAJ

Overview

The Panasonic EZA-ST42AAAJ is an SMD RC network from the EZA series, designed for EMI/RFI filtering. It integrates four resistors and four capacitors within a compact 1608 (1603 metric) package measuring 4 x 2.1 x 0.65mm. The component features a capacitance of 47pF with a tolerance of -20/+30% and a resistance of 220Ω with ±5% tolerance. Rated for 25V DC, it operates between -25°C and +85°C.

Feature Summary

• Integrates multiple passive components into a single surface-mount device to reduce board space.
• Provides EMI and RFI suppression through internal RC filter configurations.
• Utilizes a low-profile design suitable for high-density PCB layouts.

Applications

• High-speed digital signal line filtering
• Clock circuit noise suppression
• Data bus protection in consumer electronics

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Panasonic Industry before procurement. Confirm that the 1608 package dimensions align with your PCB footprint requirements. Ensure the operating temperature range meets your system's environmental specifications. Check for any recent product discontinuation notices or lifecycle changes associated with this part number.

Selection Notes

Select this component when space-constrained designs require integrated EMI filtering on high-speed lines. The 220Ω resistance and 47pF capacitance values are optimized for specific impedance matching and cutoff frequency requirements. Consider the -20/+30% capacitance tolerance when designing for precise timing applications. Compare against discrete component solutions if higher individual component tolerances are required.

Part Context

This part belongs to the Panasonic EZA series of chip RC networks, which are engineered for efficient electromagnetic interference suppression in compact electronic devices. The series offers various resistor and capacitor combinations within standardized footprints, allowing designers to simplify assembly processes while maintaining signal integrity in sensitive circuits.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative RC networks by matching the 1608 package size, 25V rating, and equivalent electrical characteristics. Consult Panasonic Industry for current obsolescence status and recommended alternatives if this model is discontinued.