170473K400EB Film Capacitor Equivalent & Substitute Parts

Part Overview

The 170473K400EB is a 0.047 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 400V DC operation with polypropylene metallized dielectric. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing system maintenance and new design implementations. The part is designed for DC link and DC filtering applications requiring low ESR performance.

Substiute Parts

170473K400EB

Cornell Dubilier Electronics (CDE)In Stock: 1034170473K400EB Datasheet

Current PartRFQ

150473J400DB

Cornell Dubilier Electronics (CDE)In Stock: 1225150473J400DB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 170473K400EB is determined by the following critical parameters:

Primary Matching Criteria:

• Capacitance value: 0.047 µF (exact match required)
• Voltage rating: 400V DC minimum
• Mounting type: Through Hole Axial configuration
• Termination style: PC Pins

Secondary Compatibility Factors:

• Dielectric material type (polypropylene or polyester metallized film)
• Operating temperature range (minimum -55°C to 105°C coverage)
• Physical envelope constraints (axial package dimensions)
• Tolerance specification (±10% or tighter)

The substitute part 150473J400DB meets these criteria with the following considerations: identical capacitance and voltage rating, matching axial through-hole mounting, equivalent physical length (0.650"), and compatible termination. Dielectric material differs (polyester versus polypropylene), and tolerance is tighter (±5% versus ±10%), with extended upper operating temperature (125°C versus 105°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The 150473J400DB qualifies as a functional substitute for the obsolete 170473K400EB based on matching capacitance (0.047 µF), identical DC voltage rating (400V), and compatible through-hole axial mounting configuration. Both components feature PC pin termination and unlimited moisture sensitivity rating.

Compliance Considerations:

The substitute part 150473J400DB carries active product status with confirmed ROHS3 compliance, whereas the main part status requires inventory verification for RoHS compliance. Both parts maintain REACH Unaffected status and EAR99 export classification.

Physical Integration:

The substitute exhibits a reduced diameter (0.276" versus 0.315") while maintaining identical axial length (0.650"). This dimensional difference permits installation in space-constrained PCB layouts without functional compromise.

Performance Characteristics:

The substitute part features tighter tolerance specification (±5% versus ±10%) and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). Dielectric material differs (polyester versus polypropylene), with polyester film capacitors providing stable performance across general-purpose applications. AC voltage rating is marginally lower (200V versus 220V), which does not impact DC-primary applications.

Frequently Asked Questions (FAQ)

Q: Can the 150473J400DB directly replace the 170473K400EB in existing assemblies?

A: Yes. Both parts share identical capacitance (0.047 µF) and DC voltage rating (400V). The axial through-hole mounting and PC pin termination are compatible. The substitute's smaller diameter (7.00mm versus 8.00mm) accommodates existing PCB footprints without modification.

Q: What is the significance of the dielectric material difference (polypropylene versus polyester)?

A: Polypropylene film capacitors typically exhibit lower ESR and superior high-frequency performance. Polyester film capacitors provide stable capacitance across temperature variations and are suitable for general-purpose filtering applications. For DC link and DC filtering functions, both dielectric types are functionally equivalent.

Q: Does the tighter tolerance (±5%) of the substitute part affect circuit performance?

A: The substitute's ±5% tolerance is more restrictive than the main part's ±10% tolerance, resulting in improved capacitance accuracy. This enhancement does not create compatibility issues and may improve circuit performance in applications sensitive to capacitance variation.

Q: Are there physical space constraints when using the substitute part?

A: The substitute part's reduced diameter (7.00mm versus 8.00mm) provides a space advantage. Both parts maintain identical axial length (16.50mm). PCB footprints designed for the original part accommodate the substitute without modification.

Q: What is the compliance status difference between the two parts?

A: The substitute part (150473J400DB) carries ROHS3 compliance with active product status. The main part (170473K400EB) is obsolete with RoHS status requiring inventory verification. For new designs and long-term supply assurance, the substitute part is the preferred selection.

Q: Are both parts suitable for DC link and DC filtering applications?

A: Yes. Both the 170473K400EB and 150473J400DB are rated for DC link and DC filtering applications. The substitute's extended operating temperature range (-55°C to 125°C) provides additional thermal margin for demanding environments.