ECQ-B1122JF Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECQ-B1122JF is a 1200 pF film capacitor manufactured by Panasonic Electronic Components, rated for 100V DC operation with polyester dielectric material. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production requirements. The radial through-hole configuration and general-purpose application profile allow for direct substitution with compatible alternatives meeting the core electrical and mechanical specifications.

Substiute Parts

ECQ-B1122JF

Panasonic Electronic ComponentsIn Stock: 1117ECQ-B1122JF Datasheet

Current PartRFQ

BFC241941202

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 945BFC241941202 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-B1122JF is determined by the following critical parameters:

Electrical Compatibility:

• Capacitance value must match: 1200 pF
• Voltage rating must meet or exceed: 100V DC
• Tolerance must be equal to or tighter than: ±5%

Mechanical Compatibility:

• Mounting type: Through Hole (radial configuration)
• Lead spacing: 0.197" (5.00mm)
• Package case: Radial
• Termination: PC Pins

Environmental Compatibility:

• Operating temperature range must encompass or exceed the original specification

The substitute part BFC241941202 meets all electrical and mechanical compatibility criteria, with enhanced voltage rating (400V DC) and improved tolerance (±2%), while maintaining identical lead spacing and radial through-hole configuration.

Parameter Comparison

Engineering Selection Recommendations

The BFC241941202 is a direct electrical and mechanical substitute for the ECQ-B1122JF. Selection of this substitute is supported by the following factors:

Electrical Advantages:

• Voltage rating of 400V DC exceeds the original 100V requirement, providing design margin
• Tolerance of ±2% is superior to the original ±5%, improving circuit accuracy

Mechanical Compatibility:

• Identical lead spacing (5.00mm) and radial through-hole configuration ensure PCB compatibility
• Physical dimensions are comparable, with minimal height variation (0.276" vs. 0.315")

Product Status:

• The substitute part is classified as Active, ensuring long-term availability and supply chain stability
• The original ECQ-B1122JF is obsolete, making substitution necessary for continued production

Compliance:

• Both parts carry EAR99 ECCN classification and identical HTSUS code (8532.25.0010)
• The substitute is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements

Temperature Consideration:

• The substitute operating range (-55°C ~ 85°C) does not extend to the original upper limit of 105°C; circuit thermal requirements must be verified for applications requiring operation above 85°C

Frequently Asked Questions (FAQ)

Q: Can BFC241941202 be used as a direct replacement for ECQ-B1122JF on existing PCBs?

A: Yes. Both parts share identical lead spacing (5.00mm), radial through-hole configuration, and PC pin termination. Physical dimensions are compatible with standard PCB layouts designed for the original part.

Q: What are the key differences between these two capacitors?

A: The primary differences are dielectric material (polyester vs. polypropylene), voltage rating (100V vs. 400V), tolerance (±5% vs. ±2%), and operating temperature range (-40°C to 105°C vs. -55°C to 85°C). The substitute offers higher voltage rating and tighter tolerance, but with a reduced upper temperature limit.

Q: Is the substitute suitable for high-temperature applications?

A: The BFC241941202 is rated to 85°C maximum. If the original design requires operation above 85°C, thermal performance must be evaluated. The ECQ-B1122JF specification extends to 105°C.

Q: Are there any compliance or regulatory differences?

A: Both parts share the same ECCN (EAR99) and HTSUS classification. The substitute is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards.

Q: Why is the substitute part more expensive or harder to source if it is active?

A: Availability and pricing depend on current market demand and distributor inventory levels. The substitute's Active status ensures it will remain available for future orders, unlike the obsolete original part.

Q: Can the substitute be used in AC applications?

A: The ECQ-B1122JF does not specify an AC voltage rating. The BFC241941202 specifies 125V AC rating, making it suitable for AC applications within that limit.