Equivalent & Substitute Parts for 1111Y5000241FUT

Part Overview

The 1111Y5000241FUT is a 240 pF ±1% 500V ceramic capacitor manufactured by Knowles Syfer in the FlexiCap™ series. This surface mount MLCC features C0G/NP0 temperature coefficient with high Q and low loss characteristics suitable for RF, microwave, and high-frequency applications. The part is currently obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

1111Y5000241FUT

Knowles SyferIn Stock: 7251111Y5000241FUT Datasheet

Current PartRFQ

1111Y5000241FQT

Knowles SyferIn Stock: 9481111Y5000241FQT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1111Y5000241FUT is determined by strict equivalence across the following parameters:

• Capacitance value: 240 pF
• Tolerance: ±1%
• Voltage rating: 500V
• Temperature coefficient: C0G, NP0 (1B)
• Operating temperature range: -55°C ~ 125°C
• Mounting type: Surface Mount, MLCC
• Package designation: 1111 (2828 Metric)
• Physical dimensions: 0.110" L x 0.110" W (2.79mm x 2.79mm)
• Thickness: 0.070" (1.78mm) maximum
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

The 1111Y5000241FQT meets all specified parameters and qualifies as a direct substitute. The primary distinction is product status: the original part is obsolete while the substitute is active.

Parameter Comparison

Engineering Selection Recommendations

The 1111Y5000241FQT is the direct equivalent for the obsolete 1111Y5000241FUT. Both parts are manufactured by Knowles Syfer and maintain identical electrical and mechanical specifications. The substitute part carries active product status with confirmed inventory availability (929 pcs), ensuring supply chain continuity. Both parts maintain ROHS3 compliance and carry identical ECCN and HTSUS classifications. Selection of the 1111Y5000241FQT eliminates obsolescence risk while preserving all functional and compliance requirements of the original design.

Frequently Asked Questions (FAQ)

Q: Can the 1111Y5000241FQT be used as a direct replacement for the 1111Y5000241FUT?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including capacitance, voltage rating, temperature coefficient, operating temperature range, package dimensions, and compliance certifications.

Q: Are there any differences in the physical footprint between these parts?

A: No. Both parts use the 1111 (2828 Metric) package with identical dimensions of 0.110" L x 0.110" W (2.79mm x 2.79mm) and maximum thickness of 0.070" (1.78mm). PCB layouts and assembly processes require no modification.

Q: What is the primary reason for substitution?

A: The 1111Y5000241FUT is obsolete. The 1111Y5000241FQT is the active equivalent from the same manufacturer and series, ensuring continued availability and support.

Q: Are both parts RoHS compliant?

A: Yes. Both the original and substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What is the difference between the FUT and FQT designations?

A: The designations reflect different manufacturing batches or termination specifications within the same electrical and mechanical specification. The FQT variant is the currently active production part.