Johanson Manufacturing produces High Quality Trimmer Capacitors, Non Magnetic Variable Inductors and Microwave Tuning Elements.

Based around our Thin-Trim capacitors, Johanson's Cera-Trims are designed for use in harsh environments. The ceramic housing and color-coded epoxy seal protect the capacitor from solder fluxes and cleaning solvents. In use, the housing continues to protect the trimmer and provide rugged reliability.

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  • RF Amplifier
  • LC Filters and Networks
  • Broadband Wireless LAN
  • Cordless and Cellular phones
  • DR/Crystal Ocillator
  • Microstrip line filters


  • Working Voltage: 250 VDC (500 VDC test)
  • Insulation resistance: >104
  • Temperature range: -55°C to +125°C
  • Tuning Tool: 4192
  • ROHS Compliant parts available


  • Add suffix to JMC P/N for reel packaging
  • R1=500 per reel, R2=2500 per reel

Cera Trim Non
Cera Trim SL
JMC P/N Range pF min Q @100 MHz
2320-0 2320-0SL 0.6 to 2.5 3000
2320-1 2320-1SL 1.0 to 5.0 1000
2320-2 2320-2SL 2.5 to 10.0 1000
2320-3 2320-3SL 5.0 to 18.0 500
2320-4 2320-4SL 6.5 to 25.0 300
 RoHS Range pF min Q @100 MHz
2322-0G 2322-0GSL 0.6 to 2.5 3000
2322-1G 2322-1GSL 1.0 to 5.0 1000
2322-2G 2322-2GSL 2.5 to 10.0 1000
2322-3G 2322-3GSL 7.5 to 18.0 500
2322-4G 2322-4GSL 8.5 to 25.0 300

Important Information: Storage Instructions for Cera-Trim®

Sealed Cera-Trim® Capacitors are packed with a 1/6 unit of desiccant and must remain in their original packing as long as possible beforesoldering. Care should be taken to make sure the re-sealable outer bag is completely sealed after each use.

All Cera-Trims, with or without process seals, should be stored in a temperature and humidity controlled environment.

If sealed Cera-Trims need to be re-packed then they must be packed in a re-sealable poly/metal anti-static bag with a fresh 1/6 unit of desiccant.

If sealed Cera-Trims have been inadvertently left exposed to ambient humidity for more than 1 hour, then dry the units per the following procedure:

for sealed units that are not in tape & reel packaging
Place units in an oven at 35 ± 5°C for 8 hours minimum or faster drying may be done at 125 ± 5°C for 60 to 90 minutes. Re-pack using freshdesiccant packs after drying.

for sealed units that are in tape & reel packaging
Place units in an oven at 35 ± 5°C for 8 hours minimum. Re-pack using fresh desiccant packs after drying.

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