A1 & A4 PTFE Trimmers

Voltronics / Knowles A1 and A4 Polytetrafluoroethylene (PTFE) Trimmers are capacitors featuring a high-reliability solid dielectric, positive tuning stops, and up to 5 (A4) or 13 (A1) full turns of linear tuning. Voltronics / Knowles A1 PTFE Trimmers are an ideal replacement for conventional miniature-air and sapphire dielectric trimmers. A1 assures no intermittent noiseless performance. A4 PTFE Trimmers offer the shortest length of any similar trimmer capacitor.

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Description Datasheet Availability Pricing (SEK) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Capacitance Range
Voltage Rating
Termination Style
Length
Type
Diameter
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
Knowles Voltronics Trimmer/Variable Capacitors 0.5-8 pF +/-100 500V HIGH VOLTAGE
Datasheet
323In Stock
Min.: 1
Mult.: 1

0.5 pF to 8 pF 500 V 6.6 mm (0.26 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors TRIMMER CAPACITOR
Datasheet
149In Stock
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 3 PF, 1000 VDC
Datasheet
12In Stock
Min.: 1
Mult.: 1

A4_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors 0.45 to 4.0pF SOL DIELECTRIC TRIM
Datasheet
42In Stock
Min.: 1
Mult.: 1

0.45 pF to 4 pF 250 V SMD/SMT 6.6 mm (0.26 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors 0.6 - 12PF 125V
Datasheet
4In Stock
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors 0.45 - 3pF 125volts
Datasheet
30Expected 2026-08-14
Min.: 1
Mult.: 1

0.45 pF to 3 pF 125 V SMD/SMT 5.72 mm (0.225 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A4 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 4 PF, 500 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 4 PF, 2000 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 8 PF, 250 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP 8 PF, 1000 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors 0.6pF to 12pF 125volts
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

0.6 pF to 12 pF 125 V SMD/SMT 6.6 mm (0.26 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

0.6 pF to 12 pF 125 V A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

0.6 pF to 12 pF 125 V A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors 0.45 - 4.0pF 250volts
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

0.45 pF to 4 pF 250 V SMD/SMT 6.6 mm (0.26 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 4 PF, 2000 VDC
Datasheet
Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk

Knowles Voltronics Trimmer/Variable Capacitors 0.5-8.0pF 125volts
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

0.5 pF to 8 pF 125 V SMD/SMT 6.6 mm (0.26 in) Multi-Turn PTFE Trimmer Capacitors 4.06 mm - 65 C + 125 C A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 8 PF, 1000 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors TRIMMER CAPACITOR
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 12 PF, 250 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 8 PF, 250 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 12 PF, 250 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 12 PF, 250 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 4 PF, 500 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1 Bulk
Knowles Voltronics Trimmer/Variable Capacitors VARCAP, 4 PF, 2000 VDC
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

A1_HV Bulk