EB10 Trimmer Capacitor Equivalent & Substitute Parts

Part Overview

The EB10 is a 0.8–10pF trimmer capacitor manufactured by Knowles Voltronics, designed for through-hole mounting applications requiring top adjustment. This component operates at 250V rated voltage with an air dielectric and is suitable for general-purpose tuning and calibration circuits. The EB10 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

EB10

Knowles VoltronicsIn Stock: 753EB10 Datasheet

Current PartRFQ

AB10

Knowles VoltronicsIn Stock: 816AB10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EB10 trimmer capacitor is determined by strict alignment of the following critical parameters:

• Capacitance Range Compatibility: The substitute must cover the required tuning range. The EB10 operates from 0.8–10pF; substitutes must accommodate this minimum and maximum capacitance requirement.
• Voltage Rating: The substitute must maintain or exceed the 250V rated voltage specification.
• Dielectric Material: Air dielectric is required to maintain electrical performance characteristics.
• Adjustment Type: Top adjustment mechanism must be preserved for mechanical compatibility.
• Mounting Configuration: Through-hole mounting with identical physical dimensions (0.300" diameter, 0.480" maximum seated height) ensures PCB compatibility.
• Operating Temperature Range: The substitute must support the –65°C to 125°C operating window.
• Q Factor Performance: The substitute should maintain equivalent Q performance at 100MHz (5000 @ 100MHz).

The AB10 is identified as a direct substitute based on these parameters. While the AB10 capacitance range is specified as 1–10pF (versus 0.8–10pF for the EB10), it maintains all other critical electrical and mechanical specifications, making it suitable for applications where the minimum capacitance requirement does not fall below 1pF.

Parameter Comparison

Engineering Selection Recommendations

The AB10 is the identified substitute for the obsolete EB10 trimmer capacitor. Selection of the AB10 is supported by the following factors:

• Product Status: The AB10 is classified as Active, ensuring continued availability and supply chain stability compared to the obsolete EB10.
• Compliance Certifications: The AB10 is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component manufacturing and use.
• Electrical Equivalence: Both components share identical voltage rating (250V), dielectric material (air), adjustment mechanism (top), and Q factor performance (5000 @ 100MHz).
• Mechanical Compatibility: Identical physical dimensions and through-hole mounting configuration ensure direct PCB compatibility without layout modifications.
• Capacitance Range Consideration: The AB10 minimum capacitance of 1pF versus the EB10 minimum of 0.8pF represents a 0.2pF difference. Applications requiring tuning below 1pF must evaluate circuit-specific impact before substitution.

Frequently Asked Questions (FAQ)

Q: Can the AB10 directly replace the EB10 in all applications?

A: The AB10 is mechanically and electrically compatible with the EB10 for most applications. The primary consideration is the capacitance range: the AB10 minimum is 1pF while the EB10 minimum is 0.8pF. If your circuit requires tuning below 1pF, the AB10 may not be suitable. For applications operating within the 1–10pF range, direct substitution is valid.

Q: What is the significance of the EB10 being obsolete?

A: Obsolete status indicates the EB10 is no longer manufactured or supported by Knowles Voltronics. The AB10, classified as Active, is the recommended alternative to ensure long-term component availability and supply chain continuity.

Q: Are there physical differences between the EB10 and AB10?

A: No. Both components share identical physical dimensions: 0.300" diameter (7.62mm) and 0.480" maximum seated height (12.19mm). Both use through-hole mounting, making them mechanically interchangeable on PCBs designed for the EB10.

Q: What compliance advantages does the AB10 offer?

A: The AB10 is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards. The EB10 compliance status is not specified, which is typical for obsolete components. The AB10 is the preferred choice for new designs and systems requiring current regulatory compliance documentation.

Q: How do the electrical specifications compare?

A: Both components operate at 250V rated voltage, use air dielectric, feature top adjustment, and deliver 5000 Q @ 100MHz. The only electrical difference is the capacitance range: EB10 is 0.8–10pF and AB10 is 1–10pF. Operating temperature ranges are identical (–65°C to 125°C).

Q: What should I verify before substituting the AB10 for the EB10?

A: Confirm that your circuit tuning requirements fall within the 1–10pF range. If your design requires capacitance values below 1pF, the AB10 is not suitable. For all other applications within this range, the AB10 is a valid substitute with improved availability and compliance status.