AD14 Trimmer Capacitor Equivalent & Substitute Parts

Part Overview

The AD14 is a 1–14pF trimmer capacitor rated for 125V operation with top adjustment and through-hole mounting. Manufactured by Knowles Voltronics, this component is designed for general-purpose applications requiring variable capacitance tuning in the low-picofarad range. The part is Active status and ROHS3 compliant, making it suitable for current production environments. Substitute parts may be required due to inventory constraints, supply chain disruptions, or design flexibility needs while maintaining identical electrical and mechanical specifications.

Substiute Parts

AD14

Knowles VoltronicsIn Stock: 953AD14 Datasheet

Current PartRFQ

AF14

Knowles VoltronicsIn Stock: 1232AF14 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The AF14 is classified as a parametric equivalent to the AD14 based on strict alignment across all critical electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

• Capacitance range: 1 ~ 14pF (identical)
• Voltage rating: 125V (identical)
• Adjustment mechanism: Top adjustment (identical)
• Dielectric type: Air (identical)
• Q factor: 3000 @ 100MHz (identical)
• Physical dimensions: 0.300" diameter, 0.480" maximum seated height (identical)
• Operating temperature range: -65°C ~ 125°C (identical)
• Mounting configuration: Through-hole (identical)
• Compliance: ROHS3 compliant, REACH unaffected (identical)

The AF14 maintains full compatibility with the AD14 in all specified parameters, permitting direct substitution in circuit designs without modification to PCB layout, schematic, or performance expectations.

Parameter Comparison

Engineering Selection Recommendations

Both the AD14 and AF14 are Active-status components manufactured by Knowles Voltronics with identical ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on availability and supply chain considerations. The AF14 currently maintains higher inventory (1202 pcs) compared to the AD14 (859 pcs), making it a viable alternative when supply constraints exist. Both parts meet all regulatory and environmental requirements for production use. No performance degradation or design modification is required when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Can the AF14 be used as a direct replacement for the AD14 in existing designs?

A: Yes. The AF14 and AD14 are electrically and mechanically identical across all specified parameters, including capacitance range, voltage rating, adjustment type, physical dimensions, and operating temperature. No circuit modification or PCB redesign is required.

Q: Are there any differences in mounting or PCB layout between these parts?

A: No. Both parts use identical through-hole mounting with the same 0.300" diameter and 0.480" maximum seated height. PCB footprints and hole spacing remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AD14 and AF14 are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for production and distribution.

Q: What is the primary reason to consider the AF14 as an alternative?

A: Supply availability. The AF14 maintains higher current inventory levels, making it a practical choice when AD14 stock is limited or lead times are extended.

Q: Are there any performance differences in Q factor or frequency response?

A: No. Both parts deliver identical Q factor performance of 3000 @ 100MHz, ensuring equivalent high-frequency characteristics and tuning precision.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both parts operate across the identical temperature range of -65°C to 125°C, supporting equivalent thermal performance in extreme environment applications.