Equivalent & Substitute Parts for 1111Y5000221FUT

Part Overview

The 1111Y5000221FUT is a 220 pF ±1% 500V ceramic capacitor manufactured by Knowles Syfer in the FlexiCap™ series. This surface mount multilayer ceramic capacitor (MLCC) features C0G/NP0 temperature coefficient characteristics and is designed for RF, microwave, and high-frequency applications requiring low loss and ultra-low ESR performance.

The 1111Y5000221FUT is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and redesign efforts.

Substiute Parts

1111Y5000221FUT

Knowles SyferIn Stock: 12541111Y5000221FUT Datasheet

Current PartRFQ

1111Y5000221FQT

Knowles SyferIn Stock: 8621111Y5000221FQT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1111Y5000221FUT is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 220 pF
• Tolerance: ±1%
• Rated voltage: 500V
• Temperature coefficient: C0G/NP0 (1B)
• Operating temperature range: -55°C ~ 125°C
• Package designation: 1111 (2828 Metric)
• Physical dimensions: 0.110" L x 0.110" W x 0.070" max thickness
• Mounting technology: Surface mount MLCC

The substitute part 1111Y5000221FQT meets all these criteria and is manufactured by the same supplier (Knowles Syfer) within the same product series.

Parameter Comparison

Engineering Selection Recommendations

The 1111Y5000221FQT is the direct substitute for the obsolete 1111Y5000221FUT. Both parts are manufactured by Knowles Syfer and share identical electrical specifications, temperature characteristics, and physical dimensions. The substitute part maintains active product status, ensuring ongoing availability and supply chain continuity.

Both parts carry ROHS3 compliance and MSL 1 rating, confirming equivalent environmental and handling requirements. The substitute part is suitable for direct replacement in existing designs without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the 1111Y5000221FQT be used as a direct replacement for the 1111Y5000221FUT?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 220 pF capacitance, ±1% tolerance, 500V rating, C0G/NP0 temperature coefficient, and 1111 (2828 Metric) package. The substitute part is suitable for direct PCB assembly without design changes.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The 1111Y5000221FUT is obsolete, while the 1111Y5000221FQT is active. Both parts are from the same manufacturer and series with identical performance characteristics.

Q: Are there any compliance or certification differences?

A: No. Both parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Environmental and handling requirements are equivalent.

Q: Will the substitute part fit the same PCB footprint?

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

Q: Are there any performance differences in RF or microwave applications?

A: No. Both parts are specified for RF, microwave, and high-frequency applications with identical electrical characteristics, including low loss and soft termination features.