4120R-601-250/201

Overview

The Bourns 4120R-601-250/201 is an EMI filter circuit belonging to the 601 series, designed as an RC (T-type) network. It features a 20-pin dual in-line package with a 0.300-inch (7.62mm) pitch. The component provides eight channels of filtering, utilizing a resistance value of 25 Ohms and a capacitance of 200 pF per channel. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides eight-channel low-pass filtering for EMI suppression
• Utilizes T-network RC topology for signal integrity
• Designed for through-hole mounting on printed circuit boards

Applications

• General purpose EMI suppression
• Signal line filtering in electronic equipment
• Data bus protection

Procurement Notes

Verify current availability status as this component may be subject to discontinuation or limited stock. Confirm that the 20-DIP package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your specific environmental conditions. Check for alternative leaded or surface-mount versions if supply constraints exist.

Selection Notes

Select this component when eight-channel passive filtering is required without active components. The fixed 25 Ohm resistance and 200 pF capacitance values define the cutoff frequency characteristics. Consider the physical size of the 20-pin DIP package during layout planning. Verify compatibility with the voltage ratings of the signals being filtered.

Part Context

This part belongs to Bourns' 601 series of RC network filters. These components are standardized for general-purpose noise reduction. The series offers various resistance and capacitance combinations to suit different impedance matching needs. The 4120R variant specifically denotes the resistor-capacitor configuration within this family.

Replacement Considerations

Check for direct substitutes within the same series offering identical pin counts and electrical values. Verify mechanical compatibility with existing board layouts. Consider updated generations from the manufacturer if available.