ECQ-UBAF103MA Equivalent & Substitute Parts

Part Overview

The ECQ-UBAF103MA is a 10000 pF film capacitor manufactured by Panasonic Electronic Components, rated for 300V AC operation with polypropylene metallized dielectric. This component is designed for EMI and RFI suppression applications in through-hole configurations. The part carries a "Not For New Designs" product status, indicating that Panasonic has discontinued active development for this model. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance and repairs.

Substiute Parts

ECQ-UBAF103MA

Panasonic Electronic ComponentsIn Stock: 1075ECQ-UBAF103MA Datasheet

Current PartRFQ

ECQ-UBAF103M

Panasonic Electronic ComponentsIn Stock: 6279ECQ-UBAF103M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECQ-UBAF103MA are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Capacitance value: 10000 pF
• Tolerance: ±20%
• Voltage rating (AC): 300V
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Parameters (Must Match Exactly):

• Mounting type: Through Hole
• Package type: Radial
• Lead spacing: 0.591" (15.00 mm)
• Physical dimensions: 0.728" L × 0.197" W
• Height (seated max): 0.394" (10.00 mm)
• Termination: PC Pins

Environmental & Compliance Parameters (Must Match):

• Operating temperature range: -40°C to 110°C
• RoHS3 Compliance
• Application classification: EMI, RFI Suppression
• Ratings: X1

Only parts meeting all of these parameters are classified as direct substitutes. No parameter deviation is permitted.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-UBAF103M is a direct parametric equivalent to the ECQ-UBAF103MA. Both parts are manufactured by Panasonic Electronic Components within the ECQUB series and share identical electrical, mechanical, and environmental specifications.

Selection Basis:

Both the main part and substitute carry "Not For New Designs" status, indicating that neither part is recommended for new circuit designs. Selection between these parts should be based on availability and supply chain considerations rather than technical differentiation.

Both parts maintain ROHS3 compliance and are suitable for the same applications: EMI and RFI suppression in through-hole configurations. The identical lead spacing (0.591"), physical dimensions (0.728" L × 0.197" W), and height (0.394" max) ensure direct board-level compatibility without layout modifications.

The ECQ-UBAF103M currently maintains higher inventory availability (6236 pcs) compared to the ECQ-UBAF103MA (1038 pcs), making it the preferred selection for supply chain continuity in legacy system support and repair applications.

Frequently Asked Questions (FAQ)

Q: Can ECQ-UBAF103M be used as a direct replacement for ECQ-UBAF103MA?

A: Yes. The ECQ-UBAF103M is a direct parametric equivalent. All electrical specifications (capacitance, tolerance, voltage rating, dielectric material), mechanical dimensions (lead spacing, physical size, height), and environmental operating parameters are identical. No circuit modifications or board layout changes are required.

Q: Are there any differences in the radial package configuration between these parts?

A: No. Both parts use identical radial through-hole packaging with PC pin termination, 0.591" lead spacing, and 0.394" maximum seated height. They are mechanically interchangeable on PCBs designed for either part number.

Q: What is the significance of the "Not For New Designs" product status?

A: This status indicates that Panasonic has discontinued active development and marketing of these part numbers. Both the ECQ-UBAF103MA and ECQ-UBAF103M carry this designation. These parts remain available for legacy system maintenance, repair, and support but should not be specified in new circuit designs.

Q: Do both parts meet the same compliance and regulatory requirements?

A: Yes. Both the ECQ-UBAF103MA and ECQ-UBAF103M are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. They carry identical regulatory certifications and are suitable for the same applications.

Q: What applications are these capacitors designed for?

A: Both parts are specified for EMI and RFI suppression applications. The X1 ratings classification indicates suitability for line-to-ground filtering in AC circuits rated at 300V.

Q: Is there a difference in lead spacing or PCB footprint between the two part numbers?

A: No. Both parts have identical lead spacing of 0.591" (15.00 mm) and identical physical dimensions of 0.728" L × 0.197" W. They use the same PCB footprint and are directly interchangeable without layout modifications.