Equivalent & Substitute Parts for 1111Y5000300FUT

Part Overview

The 1111Y5000300FUT is a 30 pF ±1% 500V ceramic capacitor manufactured by Knowles Syfer, featuring C0G/NP0 temperature coefficient characteristics. This component is designed for RF, microwave, and high-frequency applications requiring low loss and ultra-low ESR performance. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

1111Y5000300FUT

Knowles SyferIn Stock: 10791111Y5000300FUT Datasheet

Current PartRFQ

1111Y5000300FQT

Knowles SyferIn Stock: 10421111Y5000300FQT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1111Y5000300FUT is determined by strict equivalence across the following parameters:

• Capacitance value: 30 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 substitute part 1111Y5000300FQT meets all specified parameters and is manufactured by the same supplier, Knowles Syfer, ensuring electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 1111Y5000300FQT is the direct equivalent substitute for the obsolete 1111Y5000300FUT. Both parts are manufactured by Knowles Syfer and share identical electrical specifications, physical dimensions, and compliance certifications. The substitute part maintains active product status, ensuring continued availability and supply chain support. Both components are ROHS3 compliant and carry MSL rating 1, indicating no moisture sensitivity constraints during storage and handling. Selection of the 1111Y5000300FQT eliminates obsolescence risk while maintaining full functional and mechanical compatibility in RF, microwave, and high-frequency circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 1111Y5000300FQT be used as a direct replacement for the 1111Y5000300FUT?

A: Yes. Both parts are electrically and mechanically identical, with matching capacitance (30 pF), tolerance (±1%), voltage rating (500V), temperature coefficient (C0G, NP0), package designation (1111 / 2828 Metric), and physical dimensions. The substitute part is manufactured by the same supplier and carries identical compliance certifications.

Q: What is the primary difference between these two parts?

A: The 1111Y5000300FUT is obsolete, while the 1111Y5000300FQT maintains active product status. This distinction affects procurement availability and long-term supply chain viability.

Q: Are there any differences in performance characteristics between the main part and substitute?

A: No. Both parts share identical electrical performance parameters, including capacitance value, tolerance, voltage rating, temperature coefficient, and operating temperature range. Both are specified for RF, microwave, and high-frequency applications.

Q: Is the package footprint identical between these parts?

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

Q: Do both parts meet the same compliance and environmental standards?

A: Yes. Both the 1111Y5000300FUT and 1111Y5000300FQT are ROHS3 compliant and carry MSL rating 1 (Unlimited), indicating identical environmental handling and storage requirements.