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PCE
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DIFF Subgroup
H01C 7/10

voltage responsive, i.e. varistors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material > voltage responsive, i.e. varistors

CPC:

Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material (consisting of loose powdered or granular material H01C8/00; resistors having potential barriers, e.g. field-effect resistors, H10D1/40 - H10D1/43, H10K10/10; semiconductor devices sensitive to electromagnetic or corpuscular radiation, e.g. photoresistors, H10F30/00; magnetic field controlled resistors H10N50/10; bulk negative resistance effect devices H10N80/00) > voltage responsive, i.e. varistors

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H01C 7/1006 CPC only CPC only
  • H01C 7/1013 CPC only CPC only
  • H01C 7/102 Varistor boundary, e.g. surface layers (H01C7/12 takes precedence) since 1995 IPC+CPC Available in IPC and CPC