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Selected Kno sm cards 742x555 multi turn trim
Kno sm cards 742x555 multi turn trim

Product Overview

Features

  • Capacitance ranges from 0.45 to 55 pF across multiple series
  • DC working voltage up to 1000 V; dielectric withstand voltage up to 2000 V
  • Up to 13 full turns of linear tuning
  • Temperature coefficient options from ±50 to ±100 ppm/°C
  • Q values up to 4000 at 100 MHz
  • Operating temperature range −65°C to +125°C
  • Shock rated to 1500g and vibration rated to 50g at 10–2000 Hz

Benefits

  • Enables precise frequency control over a wide tuning range
  • Supports high-voltage circuits with compact footprint
  • Maintains stable performance under mechanical stress
  • Reduces tuning drift and backlash
  • Offers long rotational life and low dynamic noise 

Target Applications

  • RF impedance matching
  • Crystal oscillator trimming
  • Interstage coupling in amplifier
  • Base station tunin
  • High-voltage RF systems

Specifications

Part Number
A4M3
C Min. (pF)
0.45
C Max. (pF)
3
DWV
250
Mounting Type
Vertical, SMT
Non Magnetic
No
Seal
No
Self Resonance
3 GHz at 3 pF
Temp. Coefficient
0 ± 100
Torque
0.3 to 1.0 in-oz
DC Voltage
125
CatalogSeriesDescription
Miniature PTFE Trimmers A4 series
Product
Trimmer
Product Type
Multi Turn
Range
Miniature PTFE Trimmers A4 series
Brand
Voltronics

Product Documentation

Datasheets

Design Files

3D Models

Distributor Inventory

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Part Number Part Description Quantity Distributor
A4M3 KNOWLES VOLTRONICS 73
DigiKey
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