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Connector ICD Template

Based on Exercise 7.

Interface identification​

  • Interface name:
  • System / subsystem boundary:
  • Revision:
  • Owner:

Connector definition​

  • Connector P/N:
  • Mating connector P/N:
  • Contact P/Ns:
  • Backshell P/N:
  • Dust cap P/N:
  • Keying / polarization:

Pinout​

PinSignalSource / loadNotes
TBDTBDTBDTBD
TBDTBDTBDTBD

Electrical limits​

  • Working voltage:
  • Current per contact:
  • Rating source (datasheet + revision) and derating basis (curve, loaded contacts, ambient, allowable temperature rise):
  • Contact size / wire gauge:
  • Shielding — type (braid/foil/drain), termination strategy (one end / both ends / 360° backshell), and EMC rationale:

Power / energized-work safety (for power-carrying interfaces)​

  • Load-break / hot-plug rating: yes / no / explicitly prohibited / not specified
  • Mate/unmate under power allowed: yes / no / not specified
  • Touch-safe when unmated: yes / no / not specified
  • Fuse / overcurrent protection:
  • Available fault current:
  • Inrush / precharge requirement:
  • Ground/PE first-mate / last-break behavior (if applicable):
  • Arc/flash hazard note (if applicable):
  • Required warning labels / service procedure (if applicable):

Environmental assumptions​

  • Internal or external:
  • Sealing target:
  • Vibration / shock:
  • Mating cycles:

Assembly / cable requirements​

  • Torque / assembly notes:
  • Cable requirements:
  • Test / inspection requirements:
  • Workmanship / acceptance standard (e.g. IPC/WHMA-A-620 or program/customer equivalent):

Source / evidence tracking​

  • Datasheet revision/date:
  • Manufacturer drawing revision/date:
  • Application specification revision/date:
  • Qualified listing checked: yes / no / not applicable
  • QPD/QPL reference (if applicable):
  • Program/customer requirement reference:
  • Derating curve checked: yes / no / not applicable
  • Tooling/application spec checked: yes / no / not applicable
Claim / value relied onSource documentRev / dateRequirement typeVerification statusVerified by / dateOpen questions / risk if wrong
TBDTBDTBDcustomer / standard / manufacturer / internal / assumptionverified / assumed / example / TBDTBDTBD

Worked example — M12 A-coded sensor drop​

An ICD entry for a 4-pin A-coded M12 sensor interface. Family-level electrical, coding, and sealing values are sourced below; vendor part numbers and project values are marked illustrative. The cable for this interface is worked out in the cable drawing example.

Interface identification​

  • Interface name: Sensor drop S1
  • System / subsystem boundary: field sensor ↔ controller enclosure
  • Revision: A (illustrative)
  • Owner: (project)

Connector definition​

  • Connector P/N: M12 A-coded 4-pin female cordset — vendor P/N illustrative
  • Mating connector P/N: sensor device M12 A-coded 4-pin male port
  • Contact P/Ns: molded cordset (no removable contacts)
  • Backshell P/N: molded strain relief (or cable gland for a field-wireable connector)
  • Dust cap P/N: M12 protective cap — illustrative
  • Keying / polarization: A-coded1

Pinout​

PinSignalSource / loadNotes
1L+ (24 VDC nominal)SourceBrown
2SignalPer deviceWhite
3L− (0 V)SourceBlue
4SignalPer deviceBlack

Pin functions follow the device datasheet; colours per the common A-coded convention.

Electrical limits​

  • Working voltage: ≤ 250 V per contact (IEC 61076-2-101); application 24 VDC1
  • Current per contact: ≤ 4 A (IEC 61076-2-101); application per sensor (typically well under 1 A)1
  • Contact size / wire gauge: ≈ 22 AWG / 0.34 mm² (illustrative)
  • Shielding: unshielded (typical A-coded sensor); shielded variant if EMI requires

Power / energized-work safety​

  • Load-break / hot-plug rating: not specified by the datasheet — treat as not load-break
  • Mate/unmate under power allowed: no — de-energize the 24 V feed before disconnect (service procedure)
  • Touch-safe when unmated: energized (source) side is the female/socket cordset — recessed contacts
  • Fuse / overcurrent protection: sensor branch fused upstream (project value)
  • Available fault current / inrush: low-power sensor circuit — record per project
  • Ground/PE first-mate: n/a (no PE contact in the 4-pin A-coded interface)

Environmental assumptions​

  • Internal or external: external field drop
  • Sealing target: IP67 when mated and torqued; unmated only when capped2
  • Vibration / shock: per application
  • Mating cycles: per datasheet (screw-lock; commonly ≥ 100)

Assembly / cable requirements​

  • Torque / assembly notes: coupling torque per datasheet (e.g. Turck specifies 0.8–1.0 N·m) — verify2
  • Cable requirements: PUR jacket, OD within the gland range; see the cable drawing example
  • Test / inspection requirements: continuity, insulation resistance, coupling-torque check
  • Workmanship / acceptance: IPC/WHMA-A-620 or the program/customer equivalent; molded cordset — incoming inspection (illustrative)

Source / evidence tracking​

  • IEC 61076-2-101 listing (coding, ≤ 4 A / ≤ 250 V class) — verified, cited in Sources below; record the edition/date you check
  • Turck torque example (0.8–1.0 N·m) — verified example, manufacturer-specific; replace with your vendor's figure
  • Vendor P/N, cable OD, revision fields — example-only (illustrative); qualified listing: not applicable for this commercial sensor interface
  • Derating curve checked: not applicable at sensor current — record it for anything approaching the contact rating

Sources​

Footnotes​

  1. IEC 61076-2-101 (M12 circular connectors with screw-locking, A/B/D coding) — 2- to 17-way; up to 250 V and up to 4 A per contact; data ≤ 100 MHz. https://webstore.iec.ch/en/publication/77773 ↩ ↩2 ↩3

  2. An M12 IP rating applies to the complete, correctly-mated and -torqued assembly, not the unmated connector. Coupling torque is manufacturer-specified and varies (e.g. Turck specifies 0.8–1.0 N·m) — treat any single figure as an example and use the manufacturer's value with a torque tool. See the M12 Deep Dive §8.3. ↩ ↩2