Equivalent & Substitute Parts for 1111J5002P10BUT

Part Overview

The 1111J5002P10BUT is a 2.1 pF ceramic capacitor manufactured by Knowles Syfer, designed for RF and microwave applications requiring high frequency performance. This component features C0G/NP0 temperature coefficient characteristics with a 500V rated voltage and ultra-low ESR properties. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing design support and procurement planning.

Substiute Parts

1111J5002P10BUT

Knowles SyferIn Stock: 10901111J5002P10BUT Datasheet

Current PartRFQ

1111J5002P10BQT

Knowles SyferIn Stock: 11171111J5002P10BQT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1111J5002P10BUT is determined by strict equivalence across the following critical parameters:

• Capacitance value: 2.1 pF
• Tolerance: ±0.1pF
• Voltage rating: 500V
• Temperature coefficient: C0G, NP0 (1B)
• Operating temperature range: -55°C ~ 125°C
• Package type: 1111 (2828 Metric)
• Physical dimensions: 0.110" L x 0.110" W (2.79mm x 2.79mm)
• Mounting configuration: Surface Mount, MLCC

The substitute part 1111J5002P10BQT meets all electrical and mechanical parameters required for direct substitution. Both parts are manufactured by Knowles Syfer and share identical capacitance, tolerance, voltage rating, temperature coefficient, and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The 1111J5002P10BQT is the direct equivalent substitute for the obsolete 1111J5002P10BUT. Selection of the substitute part is based on:

• Identical electrical specifications across all critical parameters
• Matching mechanical and package specifications for direct PCB compatibility
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status of the substitute part
• Equivalent export classification (EAR99) and tariff coding (8532.24.0020)

No design modifications or board-level adjustments are required when transitioning from the main part to the substitute.

Frequently Asked Questions (FAQ)

Q: Can 1111J5002P10BQT be used as a direct replacement for 1111J5002P10BUT?

A: Yes. Both parts share identical capacitance (2.1 pF), tolerance (±0.1pF), voltage rating (500V), temperature coefficient (C0G, NP0), operating temperature range (-55°C ~ 125°C), and package specifications (1111 / 2828 Metric). No circuit modifications are necessary.

Q: What is the primary reason for substitution?

A: The 1111J5002P10BUT is obsolete. The 1111J5002P10BQT is the active equivalent from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are there any compliance differences between the two parts?

A: The substitute part carries ROHS3 compliance and REACH unaffected status. Both parts share the same ECCN (EAR99) and HTSUS code (8532.24.0020).

Q: Will the substitute part fit the existing PCB layout?

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 maximum thickness of 0.070" (1.78mm). Surface mount footprints are compatible.

Q: Are the electrical performance characteristics identical?

A: Yes. Both parts feature identical capacitance value, tolerance, voltage rating, temperature coefficient, and operating temperature range. High Q and low loss characteristics are maintained in the substitute part.