Screw Type EMI Filters – High Reliability Threaded Feedthrough Capacitors

LCA® screw-in EMI filters are engineered for high-reliability interference suppression in military, aerospace, industrial, and RF/microwave systems. Their threaded design ensures secure panel mounting, and optional hermetic sealing makes them suitable for extreme environments.

Key Features

  • Capacitance Range: 100pF to 100nF
  • Voltage Ratings: 50V to 1000V DC
  • Threaded metal housing for vibration-resistant installation
  • Optional glass-to-metal hermetic sealing
  • Excellent insertion loss performance: up to 60 dB from 1 MHz to 1 GHz

Typical Applications

  • Military communications and control systems
  • Avionics and aerospace electronics
  • Industrial automation panels
  • Medical equipment requiring EMI suppression

Need custom specifications or bulk orders? Contact our engineering team for tailored EMI filter solutions.

Dimension（unit：mm）screw mount emi filters
Model Number S M L1 L2 Capacitance DWV Circuit
type
L3325 3.3 2.5*0.45 6.6 3 5pF-10nF 16VDC-500VDC C
L4030 4 3*0.5 6-12 2.5-3.5 5pF-100nF 16VDC-500VDC C
L5040 5 4*(0.5-0.7) 6.5-13.5 2.5-6 5pF-100nF 16VDC-500VDC C/PI
L6040 6 4*0.7 7.5-11 2.5-4 5pF-100nF 100VDC-1KVDC C
L6050 6 5*0.8 10-15.5 4-4.5 5pF-100nF 100VDC-1.5KVDC C
L7060 7 6*1.0 16 8 101/221 100VDC-1.5KVDC C
L8050 8 5*0.8 10-11 6 5pF-10nF 100VDC-1.5KVDC C
L8060 8 6*(0.75-1.0) 9-15 4-10 5pF-1uF 100VDC-1.5KVDC C
L10080 10 8*(0.75-1.0) 15 7 5pF-100npF 100VDC-1.5KVDC C
L8-32UNC-2A 4.75-5.0 8-32UNC-2A 5.1-9.2 1.52-2.4 5pF-10nF 100VDC-500VDC C/PI
L1/4-28UNF-2A 10 1/4-28UNF-2A 7.9-19 3.2-14.3 10nf-1.4uf 100VDC-500VDC C/PI
L12-28UNF-2A 6 12-28UNF-2A 12 4 103 100VDC-500VDC C
L6-32UNC-2A 4 6-32UNC-2A 9.1 3.2 331 100VDC-500VDC C
L8-36UNF-2A 5 8-36UNF-2A 3.3 1 221 100VDC-500VDC C
Lead diameter：0.6mm、0.7mm、0.75mm、1.0mm、1.2mm、1.5mm、2.0mm
Custom design is available.
Screw-type-emi-Filters-M3
EMI screw filter S5 M4
High-frequency screw type EMI filter
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