Equivalent & Substitute Parts for ECQ-E1105KF

Part Overview

The ECQ-E1105KF is a 1 µF film capacitor manufactured by Panasonic Electronic Components, rated for 100V DC operation with ±10% tolerance. This polyester metallized radial capacitor is designed for general-purpose applications and operates across the temperature range of -40°C to 105°C. The part is currently active in production and maintains ROHS3 compliance.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the core parameters: capacitance value, voltage rating, tolerance, dielectric material, mounting type, and lead spacing. Alternative sources provide design flexibility, inventory availability, and supply chain redundancy for this widely used film capacitor category.

Substiute Parts

ECQ-E1105KF

Panasonic Electronic ComponentsIn Stock: 841ECQ-E1105KF Datasheet

Current PartRFQ

105MMR100K

Cornell Dubilier / Illinois CapacitorIn Stock: 12939105MMR100K Datasheet

DirectRFQ

B32521C1105K000

EPCOS - TDK ElectronicsIn Stock: 1911B32521C1105K000 Datasheet

SimilarRFQ

BFC237321105

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2609BFC237321105 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution validity for the ECQ-E1105KF is determined by strict equivalence across the following parameters:

• Electrical Equivalence: Capacitance (1 µF), DC voltage rating (100V), AC voltage rating (63V), and tolerance (±10%) must match exactly
• Dielectric Specification: Polyester metallized construction required
• Mechanical Compatibility: Through-hole radial package with 0.394" (10.00mm) lead spacing for direct PCB mounting
• Termination: PC pins for soldering compatibility
• Compliance: ROHS3 compliance maintained across all substitutes

Three direct substitutes meet these criteria: 105MMR100K (Cornell Dubilier / Illinois Capacitor), B32521C1105K000 (EPCOS - TDK Electronics), and BFC237321105 (Vishay Beyschlag/Draloric/BC Components). Each maintains full electrical and mechanical compatibility while offering alternative sourcing options.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (105MMR100K and B32521C1105K000): Both parts maintain identical electrical specifications and standard 10mm lead spacing, enabling direct PCB footprint compatibility with the ECQ-E1105KF. The B32521C1105K000 offers extended operating temperature range (-55°C to 125°C) and AEC-Q200 automotive qualification, suitable for applications requiring enhanced thermal performance or automotive-grade reliability.

Lead Spacing Consideration (BFC237321105): This Vishay part operates at 15mm lead spacing versus the standard 10mm spacing of the primary part. PCB layout modification is required for this substitute. The BFC237321105 provides extended low-temperature operation (-55°C) and long-life feature designation, applicable to designs with modified footprint tolerance.

All three substitutes maintain ROHS3 compliance and are suitable for general-purpose film capacitor applications where the ECQ-E1105KF is specified.

Frequently Asked Questions (FAQ)

Q: Can 105MMR100K replace ECQ-E1105KF directly on the PCB? A: Yes. The 105MMR100K maintains identical electrical ratings (1 µF, 100V DC, ±10%), dielectric composition (polyester metallized), and lead spacing (10mm), enabling direct footprint compatibility without layout modification.

Q: What is the primary difference between B32521C1105K000 and ECQ-E1105KF? A: Both parts are electrically equivalent. The B32521C1105K000 features an extended operating temperature range (-55°C to 125°C versus -40°C to 105°C) and carries AEC-Q200 automotive qualification. Physical dimensions differ slightly, but lead spacing remains at 10mm for PCB compatibility.

Q: Why does BFC237321105 have different lead spacing? A: The BFC237321105 is manufactured with 15mm lead spacing compared to the standard 10mm spacing of ECQ-E1105KF. This part requires PCB footprint modification and cannot be used as a direct drop-in replacement without layout redesign.

Q: Are all substitutes ROHS3 compliant? A: Yes. ECQ-E1105KF, 105MMR100K, B32521C1105K000, and BFC237321105 all maintain ROHS3 compliance and are suitable for applications requiring regulatory adherence.

Q: Which substitute offers the widest operating temperature range? A: The B32521C1105K000 operates from -55°C to 125°C, providing the broadest temperature coverage among the listed substitutes. ECQ-E1105KF, 105MMR100K, and BFC237321105 operate to 105°C maximum.