ECQ-M4102KZ Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECQ-M4102KZ is a 1000 pF polyester film capacitor rated for 400V DC operation in a radial through-hole package, manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The capacitor is designed for general-purpose applications requiring stable capacitance and reliable performance across the -40°C to 85°C operating temperature range.

Substiute Parts

ECQ-M4102KZ

Panasonic Electronic ComponentsIn Stock: 909ECQ-M4102KZ Datasheet

Current PartRFQ

ECQ-E6102KF

Panasonic Electronic ComponentsIn Stock: 3875ECQ-E6102KF Datasheet

SimilarRFQ

B32529C6102K000

EPCOS - TDK ElectronicsIn Stock: 6882B32529C6102K000 Datasheet

SimilarRFQ

BFC237051102

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 8352BFC237051102 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECQ-M4102KZ are qualified based on the following criteria:

Primary Substitution Parameters:

• Capacitance value: 1000 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 400V DC minimum (equal or higher acceptable)
• Dielectric material: Polyester-based film (metallized variants acceptable)
• Mounting type: Through hole radial configuration
• Termination: PC pins

Secondary Compatibility Factors:

• Operating temperature range must encompass or exceed the original specification
• Package dimensions should accommodate PCB layout constraints
• Lead spacing compatibility with existing board designs

Three substitute parts meet these criteria with varying levels of feature enhancement and availability status.

Parameter Comparison

Engineering Selection Recommendations

ECQ-E6102KF (Panasonic): This substitute offers higher voltage rating (630V) and extended upper operating temperature (105°C) while maintaining identical capacitance and tolerance specifications. Product status is obsolete, limiting long-term procurement viability. Suitable for applications requiring voltage margin above 400V DC.

B32529C6102K000 (EPCOS - TDK Electronics): This substitute is the only active product in the group, providing the widest operating temperature range (-55°C to 125°C) and AEC-Q200 automotive qualification. Voltage and capacitance ratings match the original specification. Recommended for new designs and applications requiring long-term component availability and automotive-grade reliability.

BFC237051102 (Vishay Beyschlag): This substitute is active and carries AEC-Q200 automotive qualification with RoHS3 compliance. Operating temperature range extends to 105°C. Voltage and capacitance ratings match the original specification. Suitable for automotive and industrial applications requiring established supplier relationships and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can I use ECQ-E6102KF as a direct replacement for ECQ-M4102KZ? A: Yes. The ECQ-E6102KF maintains identical capacitance (1000 pF) and tolerance (±10%) with a higher voltage rating (630V vs. 400V). The higher voltage rating provides additional safety margin. However, both parts are obsolete, so long-term availability is limited.

Q: What is the primary advantage of B32529C6102K000 over the original part? A: B32529C6102K000 is an active product with current manufacturing and availability. It provides an extended operating temperature range (-55°C to 125°C vs. -40°C to 85°C) and carries AEC-Q200 automotive qualification, making it suitable for demanding applications and long-term procurement strategies.

Q: Are there physical size differences between these substitutes? A: Yes. The ECQ-M4102KZ measures 11.00mm L x 5.50mm W with 6.50mm lead spacing. The B32529C6102K000 measures 7.30mm L x 2.50mm W with 5.00mm lead spacing, and BFC237051102 measures 7.20mm L x 2.50mm W with 5.08mm lead spacing. Verify PCB layout compatibility before substitution.

Q: Do all substitutes meet RoHS3 compliance? A: ECQ-E6102KF, B32529C6102K000, and BFC237051102 are all RoHS3 compliant. The original ECQ-M4102KZ compliance status is not specified in the available data.

Q: Which substitute is best for new product designs? A: B32529C6102K000 or BFC237051102 are recommended for new designs due to active product status and established long-term availability. Both carry automotive-grade certifications and RoHS3 compliance, providing design stability and regulatory alignment.