ECQ-UBAF334KA Equivalent & Substitute Parts

Part Overview

The ECQ-UBAF334KA is a 0.33 µF film capacitor manufactured by Panasonic Electronic Components, designed for EMI and RFI suppression applications. This radial polypropylene metallized capacitor operates at 300V AC with a ±10% tolerance and is rated for temperatures between -40°C and 110°C. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, ensuring direct functional replacement without circuit redesign.

Substiute Parts

ECQ-UBAF334KA

Panasonic Electronic ComponentsIn Stock: 1098ECQ-UBAF334KA Datasheet

Current PartRFQ

ECQ-UBAF334K

Panasonic Electronic ComponentsIn Stock: 1700ECQ-UBAF334K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECQ-UBAF334KA are identified based on strict equivalence of the following critical parameters:

• Capacitance Value: 0.33 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - AC: 300V (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Operating Temperature Range: -40°C ~ 110°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 0.886" (22.50mm) (exact match required)
• Termination: PC Pins (exact match required)
• Series: ECQUB (same product series)

Substitution is valid only when all parameters listed above are identical. The ECQ-UBAF334K meets all substitution criteria and belongs to the same ECQUB series from Panasonic Electronic Components.

Parameter Comparison

Engineering Selection Recommendations

Both the ECQ-UBAF334KA and ECQ-UBAF334K are active production parts from Panasonic Electronic Components with identical electrical and mechanical specifications. Selection between these parts is based on availability and inventory status:

• ECQ-UBAF334KA: 1012 pieces in stock
• ECQ-UBAF334K: 1665 pieces in stock

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory conformance for applications requiring EMI and RFI suppression. The ECQ-UBAF334K offers higher inventory availability while maintaining complete parametric equivalence. Either part is suitable for direct substitution in through-hole PCB designs requiring 0.33 µF, 300V AC rated film capacitors with radial lead configuration.

Frequently Asked Questions (FAQ)

Q: Can ECQ-UBAF334K be used as a direct replacement for ECQ-UBAF334KA?

A: Yes. The ECQ-UBAF334K is a parametric equivalent with identical capacitance (0.33 µF), voltage rating (300V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C to 110°C), physical dimensions, lead spacing (22.50mm), and termination type (PC pins). Direct substitution is valid without circuit modification.

Q: Are there any differences in compliance or certification between these parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Regulatory status is identical.

Q: What is the significance of the lead spacing specification?

A: Lead spacing of 0.886" (22.50mm) determines PCB hole pattern compatibility. Both parts share identical lead spacing, ensuring mechanical fit in existing through-hole designs without layout modification.

Q: Can these capacitors be used in AC or DC circuits?

A: These capacitors are rated for 300V AC operation. The voltage rating applies to AC applications. DC voltage rating is not specified for this product category.

Q: What applications are these capacitors designed for?

A: Both parts are specified for EMI and RFI suppression applications with X1 safety rating classification.

Q: Is there a difference in packaging between ECQ-UBAF334KA and ECQ-UBAF334K?

A: Both parts are supplied in bulk packaging. Packaging format is identical.