AT10L Trimmer Capacitor Equivalent & Substitute Parts

Part Overview

The AT10L is a 1–10pF trimmer capacitor rated for 250V with top panel mount adjustment, manufactured by Knowles Voltronics. This air dielectric component is designed for general-purpose applications requiring precision capacitance tuning in high-voltage circuits. The part is currently in active production status with 1136 units in stock.

Equivalent and substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit selection from alternative manufacturers offering identical or compatible electrical and mechanical specifications.

Substiute Parts

AT10L

Knowles VoltronicsIn Stock: 1212AT10L Datasheet

Current PartRFQ

GAA10001

Sprague-GoodmanIn Stock: 1183GAA10001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT10L is determined by strict equivalence across the following critical parameters:

• Capacitance Range: Must be 1–10pF
• Voltage Rating: Must be 250V
• Dielectric Material: Must be Air
• Adjustment Type: Must be Top
• Mounting Type: Must be Panel Mount
• Q Factor: Must be 5000 @ 100MHz
• Operating Temperature: Must span –65°C to 125°C
• Height (Seated): Must be 0.500" (12.70mm)

The GAA10001 manufactured by Sprague-Goodman meets all electrical and thermal specifications. The primary dimensional difference is the component diameter: AT10L measures 0.300" (7.62mm) while GAA10001 measures 0.236" (6.00mm). This variation does not affect electrical performance but may impact panel cutout design and mechanical fit in existing assemblies.

Parameter Comparison

Engineering Selection Recommendations

AT10L (Primary Selection): Active production status with current inventory availability. ROHS3 compliant. Recommended for new designs and applications where supply continuity is required.

GAA10001 (Substitute Selection): Electrically and thermally equivalent across all critical parameters. Marked as obsolete; use only when AT10L is unavailable and existing inventory of GAA10001 is confirmed. RoHS compliant. Panel diameter difference (0.236" vs. 0.300") requires mechanical verification for panel cutout compatibility.

Frequently Asked Questions (FAQ)

Q: Can GAA10001 replace AT10L in existing assemblies? A: Electrical and thermal performance are equivalent. Mechanical fit depends on panel cutout dimensions. The GAA10001 has a smaller diameter (0.236" vs. 0.300"), which may require panel modification or use of an adapter ring.

Q: What is the significance of the product status difference? A: AT10L is in active production; GAA10001 is obsolete. For new designs, AT10L is the appropriate choice. GAA10001 should be considered only as a temporary substitute when AT10L supply is constrained.

Q: Are there compliance differences between the two parts? A: Both are RoHS compliant. AT10L carries ROHS3 certification, while GAA10001 carries standard RoHS certification. Both are EAR99 classified and REACH unaffected.

Q: Does the diameter difference affect electrical performance? A: No. The diameter difference is mechanical only and does not impact capacitance, voltage rating, Q factor, or temperature performance.

Q: What is the inventory status for each part? A: AT10L has 1136 units in stock. GAA10001 has 1148 units in stock, though it is marked obsolete and may have limited future availability.