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DIFF Subgroup
H10D 8/70

Tunnel-effect diodes

Introduced: January 2025

Full Title

Full titles differ between systems:

IPC:

Diodes > Tunnel-effect diodes

CPC:

Diodes (variable-capacitance diodes H10D1/64; gated diodes H10D12/00) > Tunnel-effect diodes

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2025.

Child Classifications

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  • H10D 8/75 Tunnel-effect PN diodes, e.g. Esaki diodes since 2025 IPC+CPC Available in IPC and CPC
  • H10D 8/755 CPC only CPC only