DSS1NB32A472Q91A

Overview

The Murata DSS1NB32A472Q91A is a three-terminal feedthrough capacitor from the EMIFIL DSS1 series. It features a capacitance of 4700 pF (4.7 nF) with a tolerance of ±10%. Rated for 100 V DC, it supports a maximum current of 6 A and operates within a temperature range of -40°C to +85°C. The component utilizes radial leads for through-hole mounting and is housed in a Q55B package.

Feature Summary

• LC(T)-type third-order low-pass EMI filter configuration
• Three-terminal design integrating built-in bead for enhanced noise suppression
• Radial leaded construction suitable for panel or chassis mounting

Applications

• Power line filtering in electronic equipment
• EMI suppression in industrial control systems
• Noise reduction in communication infrastructure

Procurement Notes

Verify the specific suffix Q91A against official Murata documentation to confirm package dimensions and terminal configuration. Confirm RoHS compliance status as required by project specifications. Check lifecycle status, as some sources indicate this model may be scheduled for obsolescence. Ensure the selected distributor provides valid traceability documents for critical applications.

Selection Notes

Select this component when high-current handling up to 6 A is required alongside effective high-frequency noise attenuation. The three-terminal architecture offers superior grounding compared to standard two-terminal capacitors. Verify that the physical dimensions of the Q55B package fit the designated PCB or panel cutout. Consider thermal derating if operating near the upper temperature limit.

Part Context

This part belongs to Murata's EMIFIL DSS1 series of feedthrough capacitors. These components are engineered for robust electromagnetic interference suppression in demanding environments. The series typically includes various capacitance values and voltage ratings to suit different power line filtering requirements across automotive, industrial, and consumer electronics sectors.

Replacement Considerations

Check manufacturer notices for discontinuation status. Consult Murata for active replacements within the DSS1 series. Verify equivalent electrical parameters including capacitance, voltage rating, and current capacity before substitution.