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PCB (polychlorinated biphenyl) Containing Capacitors

Some oil-filled capacitors manufactured by MARCON ELECTRONICS CO., LTD. (Futai Chikudennki CO., LTD, Tokyo Denki CO., LTD.) of Nippon Chemi-Con Group used PCBs as insulating oil. We stopped using PCBs in July 1972, and therefore, PCBs are not used as insulating oil for capacitors manufactured after August 1972.

Electrolytic Capacitors and PCB

Electrolyte used for electrolytic capacitors is conductive liquid, and therefore, PCBs are not used in principle because of its insulating properties. Electrolytic capacitors manufactured by Nippon Chemi-Con Corporation and MARCON ELECTRONICS CO., LTD. do not use PCBs regardless of manufacturing year.

Identification of PCB-Containing Capacitors

Products displaying "DFコンデンサ", "シバノール入", "不燃性油入", "NON-INFLAMMABLE LIQUID" "NON-INFLAMMABLE LIQUID" contain PCBs.

Types of Products Containing PCBs

"DFコンデンサ", "シバノール入", "不燃性油入", "NON-INFLAMMABLE LIQUID"
Following series with above indication(s) contain PCB.

CD*** D*** FCD*** FCDE***
KD*** MCD*** NCD*** NHD***
NLD*** PFCD*** SA*** SD***
SDAB*** SDB*** SDR*** SP***
TCD*** ***AD-*** ***AK*** ***AST-***
***AS-*** ***AT-*** ***A-*** ***ED***
***EDF*** ***EDS*** ***FCD*** ***SDS***

*** is a combination of alphanumeric characters.

Products Not Containing PCBs

  • All capacitors manufactured after August 1972
  • All SH Capacitors (Metallized electrode capacitors: Capacitors labeled as MP or SH)
  • Reactors
  • Discharge Coils

Contact US

Chemi-Con Yamagata Corp.
Administration Group

1-1, Saiwai-cho, Nagai, Yamagata 993-8511, Japan
TEL +81-238-84-2134  FAX +81-238-84-2396

Detailed information related to PCBs can be obtained from

The Japan Electrical Manufacturers' Association