MPXQP1K: Film Capacitor 0.1µF 275VAC Radial

Part Overview

The MPXQP1K is a 0.1 µF film capacitor rated for 275V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the MPX series. This component is classified as obsolete, making identification of suitable alternatives necessary for ongoing maintenance and new circuit implementations. The capacitor is designed for EMI and RFI suppression applications, utilizing metallized polypropylene dielectric technology with radial lead configuration for through-hole mounting.

Substiute Parts

MPXQP1K

Cornell Dubilier Electronics (CDE)In Stock: 843MPXQP1K Datasheet

Current PartRFQ

ECQ-UAAF104K

Panasonic Electronic ComponentsIn Stock: 6370ECQ-UAAF104K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPXQP1K is permissible with components that satisfy the following critical parameters:

• Capacitance: 0.1 µF (exact match required)
• Tolerance: ±10% (or tighter tolerance acceptable)
• Voltage Rating (AC): 275V or higher (equal or superior rating required)
• Dielectric Material: Polypropylene (PP), Metallized (technology type must match)
• Mounting Type: Through Hole (same mechanical configuration required)
• Package / Case: Radial (lead configuration must match)
• Lead Spacing: 0.591" (15.00mm) (mechanical fit requirement)
• Ratings: X2 (safety rating must be maintained)
• Compliance: ROHS3 and REACH standards must be met

The ECQ-UAAF104K from Panasonic Electronic Components qualifies as a direct substitute based on these parameters. Both components are 0.1 µF film capacitors with 275V AC ratings, polypropylene metallized dielectric, radial through-hole mounting, matching lead spacing, X2 ratings, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-UAAF104K is the direct substitute for the obsolete MPXQP1K. Both components meet identical electrical specifications and are classified as functionally equivalent for EMI and RFI suppression applications.

The Panasonic ECQ-UAAF104K carries a "Not For New Designs" status, indicating it is aging but remains available in inventory (6303 pcs). The component maintains full compliance with ROHS3 and REACH standards, identical to the CDE original. The extended operating temperature range of the Panasonic unit (-40°C ~ 110°C versus -40°C ~ 100°C for the CDE part) provides additional thermal margin for applications operating near the upper temperature limit.

Physical dimensions differ slightly; the ECQ-UAAF104K is marginally smaller in length (17.50mm vs. 18.00mm) and width (5.00mm vs. 6.00mm) with reduced seated height (12.50mm vs. 14.00mm). The lead spacing remains identical at 15.00mm, ensuring mechanical compatibility with existing PCB layouts. These dimensional reductions may provide advantages in space-constrained circuit designs without compromising electrical performance or safety ratings.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-UAAF104K be used directly in place of the MPXQP1K without circuit redesign?

A: Yes. The substitute meets all critical electrical parameters: identical 0.1 µF capacitance, ±10% tolerance, 275V AC rating, metallized polypropylene dielectric, X2 safety rating, and matching 15.00mm lead spacing. The component is pin-compatible for through-hole mounting.

Q: What is the impact of the ECQ-UAAF104K's extended operating temperature range?

A: The Panasonic part supports operation to 110°C, compared to 100°C for the original. This extension reduces thermal stress margin requirements in high-temperature applications and poses no compatibility risk in designs specified for the lower temperature limit.

Q: Are the dimensional differences between the two capacitors significant?

A: The ECQ-UAAF104K is slightly more compact (approximately 0.5mm shorter and 1mm narrower) with 2.5mm less seated height. These differences do not affect electrical compatibility. Verification of PCB layout clearances is recommended for high-density circuit designs to confirm spatial adequacy.

Q: Do both parts comply with current regulatory standards?

A: Yes. Both the MPXQP1K and ECQ-UAAF104K are ROHS3 compliant and REACH unaffected. Both carry EAR99 export classification and identical HTSUS commodity codes.

Q: Why is the ECQ-UAAF104K marked "Not For New Designs"?

A: This designation indicates the product is in the mature/declining phase of its lifecycle but remains available from inventory. It poses no functional or reliability concern for new applications; the status reflects the manufacturer's long-term product strategy rather than technical limitations.