Equivalent & Substitute Parts for EP10 Trimmer Capacitor

Part Overview

The EP10 is a 0.8–10pF trimmer capacitor manufactured by Knowles Voltronics, rated for 250V operation with side adjustment and through-hole mounting. This component is classified as obsolete, making identification of compatible substitutes essential for ongoing production and maintenance applications. The AP10 serves as a direct functional alternative within the same product family, offering active product status and comparable electrical performance.

Substiute Parts

EP10

Knowles VoltronicsIn Stock: 1211EP10 Datasheet

Current PartRFQ

AP10

Knowles VoltronicsIn Stock: 1170AP10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EP10 with the AP10 is based on the following aligned electrical and mechanical parameters:

• Voltage Rating: Both parts are rated 250V, ensuring equivalent electrical stress capability
• Adjustment Type: Both employ side adjustment, maintaining identical mechanical interface and tuning methodology
• Dielectric Material: Both use PTFE, providing equivalent frequency stability and temperature performance
• Q Factor: Both specify 5000 @ 100MHz, ensuring comparable insertion loss and selectivity characteristics
• Mounting Type: Both are through-hole components, compatible with identical PCB footprints
• Operating Temperature Range: Both operate across –65°C to 125°C, supporting identical thermal environments

The primary difference is the capacitance range: EP10 spans 0.8–10pF while AP10 spans 1–10pF. This represents a 0.2pF minimum value offset. The AP10 is suitable for applications where the minimum capacitance requirement is 1pF or greater.

Parameter Comparison

Engineering Selection Recommendations

The AP10 is the appropriate substitute for the EP10 based on the following criteria:

• Product Status: The AP10 maintains active product status, ensuring long-term availability and supply chain continuity, whereas the EP10 is obsolete
• Regulatory Compliance: The AP10 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements
• Electrical Equivalence: Identical voltage rating, Q factor, dielectric material, and adjustment mechanism ensure functional compatibility
• Mechanical Compatibility: Identical height and through-hole mounting type support direct PCB footprint compatibility

Selection of the AP10 is contingent upon the application's minimum capacitance requirement being 1pF or greater. Applications requiring capacitance values below 1pF cannot use the AP10 as a substitute.

Frequently Asked Questions (FAQ)

Q: Can the AP10 directly replace the EP10 in all applications?

A: The AP10 is electrically and mechanically compatible with the EP10 for applications where the minimum required capacitance is 1pF or greater. If your circuit requires tuning below 1pF, the AP10 is not suitable.

Q: What is the physical difference between these parts?

A: The AP10 has a smaller diameter (0.220" vs. 0.300") but maintains the same height (0.500"). Both are through-hole mounted with identical lead spacing, so PCB footprint compatibility depends on the original hole diameter specification.

Q: Why is the EP10 obsolete?

A: The EP10 is classified as obsolete by the manufacturer. The AP10 represents the current active product offering within the Knowles Voltronics trimmer capacitor family.

Q: Are there compliance differences between EP10 and AP10?

A: Yes. The AP10 is ROHS3 compliant and REACH unaffected, meeting modern regulatory standards. The EP10 compliance status is not specified in available documentation.

Q: Do both parts have the same tuning characteristics?

A: Yes. Both parts feature identical Q factors (5000 @ 100MHz), side adjustment mechanism, and PTFE dielectric material, ensuring equivalent frequency stability and tuning resolution.

Q: What is the inventory status for these parts?

A: EP10 inventory is 1154 pieces new original in stock. AP10 inventory is 1095 pieces new original in stock.