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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
57273
C Min. (pF)
0.8
C Max. (pF)
8
DWV
1000
Mounting Type
Vertical, SMT
Non Magnetic
No
Seal
Yes
Torque
0.2 to 2.0 in-oz
DC Voltage
500
CatalogSeriesDescription
Giga-Trim Trimmers
Product
Trimmer
Product Type
Multi Turn
Range
Giga-Trim Trimmers
Brand
Johanson

Product Documentation

Datasheets

Design Files

3D Models

Distributor Inventory

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Part Number Part Description Quantity Distributor
57273-1 KNOWLES JOHANSON MANUFACTURING 420
DigiKey
Visit Site
57273-1 TRIMMER / VARIABLE CAPACITORS GIGA-TRIM ROHS 520
Mouser Electronics Inc.
Visit Site

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