Voltronics / Knowles A1 & A4 PTFE Trimmers

Knowles Voltronics 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. Knowles Voltronics A1 PTFE Trimmers serve as 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.

Features

A1
- High-reliability solid dielectric
- Positive tuning stops
- Up to 13 full turns of linear tuning
- Includes 40psi sealed, high-voltage, and non-magnetic versions

A4
- High-reliability solid dielectric
- Positive tuning stops
- Up to five full turns of linear tuning in the shortest length of any similar trimmer capacitor
- Includes high-voltage, non-magnetic, and high reliability / low-voltage versions

Specifications

A1
Capacitance range
- 0.5pF to 4pF (A1_4)
- 0.5pF to 8pF (A1_8)
- 0.6pF to 11pF (A1_12)
Working voltage
- 125V_DC (A1_8 and A1_12) or 250V_DC (A1_4)
Withstanding voltage
- 250V_DC (A1_8 and A1_12) or 500V_DC (A1_4)
Self-resonant frequency
- 2.3GHz at 4pF (A1_4)
- 1.7GHz at 8pF (A1_8)
- 1.2GHz at 11pF (A1_12)
Number of turns
- 7 (A1_4 and A1_8) or 13 (A1_12)
Q minimum at 100MHz at maximum C
- 2000 (A1_12)
- 3000 (A1_8)
- 4000 (A1_4)

A4
Capacitance range
- 0.45pF to 3pF (A4_3)
- 0.6pF to 5pF (A4_5)
125V_DC working voltage
250V_DC withstanding voltage
Self-resonant frequency
- 3GHz at 3pF (A4_3)
- 1.8GHz at 5pF (A4_5)
Number of turns
- 4 (A4_3) or 5 (A4_5)
Q minimum at 100MHz at maximum C
- 2000 (A4_5)
- 3000 (A4_3)

Voltronics / Knowles A1 & A4 PTFE Trimmers

Features

Specifications

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