Tech Journal · #307

micro-coaxial

How to Read Connector Part Numbers and Suffixes

EDPcable Engineering Team2026-06-18
How to Read Connector Part Numbers and Suffixes
ARTICLE · #3072026-06-18

Summary

Read a connector part number with the ordering guide for its exact manufacturer and series. Start with the complete string, then distinguish the physical product identifier, the packaging order code and the drawing revision. They answer different questions. This guide uses IRISO's published examples to show how a shared series and contact count can lead to different product and packing codes. It also explains where to verify an I-PEX number in a drawing, what a suffix cannot prove, and which unresolved details should stop a replacement or purchase release. A six-point check and an RFQ record help turn a partial identification into a documented engineering decision. The examples explain identification; they do not establish interchangeability or validate a finished cable assembly.

Start With the Manufacturer and the Complete Number

To read a connector part number, identify its manufacturer and exact series, find that series' ordering guide, and check every field against the product drawing. Keep punctuation, leading zeros and the complete suffix. There is no universal position in which a letter means plating, a number means pitch, or the last characters mean a revision.

For a request such as “DF14 cable” or “FI-X replacement,” record the missing full number as an open question. Do not fill the gap with a code borrowed from another maker. Reading the number identifies a component candidate; approving the mating interface and the cable assembly is a separate engineering decision.

Separate Three Identifiers Before Decoding a Suffix

Identifier or evidenceQuestion it answersWhat to record separately
Complete manufacturer product numberWhich physical component is specified?Maker, full string and source document
Packaging or ordering numberIn what orderable delivery form is it supplied?Packing code and its documented product mapping
Drawing number and revisionWhich definition did engineering check?Drawing ID, revision and retrieval date
Mating component numberWhich opposite half is specified?Exact mating number and drawing reference
Contact numbering and wiring scheduleWhere does each conductor terminate?View direction, pin 1 and net assignment
Assembly drawing and acceptance planWhat is the complete deliverable?Cable, termination, routing and project verification requirements

A drawing revision is not automatically part of the orderable number. A packaging difference is not automatically a different mating interface, either. Confirm the manufacturer's mapping instead of silently dropping a suffix. Matching contact count alone does not establish the wiring schedule; use the connector pitch guide to separate spacing from position count.

Worked Example: IRISO Product and Packaging Numbers

IRISO's own model-number guide gives two examples. The following is a reading exercise for those examples, not a conversion rule or an approved substitution.

Published exampleFields explained by that guideDetail that still needs the drawing
IMSA-13065B-20Y917 — packaging number13065 series; B plug; 20 contacts; Y embossed/blister packaging917 is assigned in the packing drawing
IMSA-13065B-20W-TM16 — product numberSame series, plug designation and contact count; a shape classification and plating field followResolve W and the complete plating specification against the product drawing
The two strings comparedThe common prefix is useful for identificationObtain the actual product-to-packing mapping; a common prefix does not prove these are interchangeable

Do not infer a thickness, latch, electrical rating or lifetime from the unexplained characters. This example cannot decode an I-PEX, Hirose or JAE number. A maker-specific field description is a starting point for finding evidence, not permission to guess the remaining fields.

Verify an I-PEX Number in the Drawing

The I-PEX drawing guide separates the recommended part-number/position table, title-block revision, materials/finish information, mating information and packing pages. Use those locations as a document checklist:

  1. Find the full requested variant in the number table; expand any position-count placeholder from the actual variant list. Keep the requested number and any recommended alternative as separate entries.
  2. Record the title-block drawing revision. Confirm relevant dimensions and finish from their own tables rather than assigning a guessed meaning to a suffix.
  3. Check the opposite-half number, mating geometry and contact orientation. A familiar family name does not define a complete pair.
  4. Read the packing information for procurement and feeding requirements. Keep it distinct from the mechanical interface review.

For an existing design, a manufacturer's recommended number still needs a documented comparison with the installed part and the approved design. For a cable-side project, continue with the I-PEX 20455 interface page or JAE FI-X interface page only after identifying the actual mating parts.

Six Checks Before Releasing a Replacement or Purchase

This is a proposed project review checklist, not a report of testing performed by EDPcable.

CheckEvidence to retainHold the decision when
IdentityComplete number, maker and authoritative sourceOnly a series, distributor abbreviation or unclear photo is available
Product versus packingManufacturer's mapping and both relevant drawingsA suffix has been removed or assumed to affect packing only
Mating and installationBoth mating numbers, dimensions, latch and available spaceFit is inferred only from pitch, count or visual similarity
WiringPin-1 view, contact numbering and approved net listCable-side and mating-side views give conflicting assignments
Materials and processSpecified finish, termination and applicable manufacturer instructionsPlating, wire accommodation or process requirements remain unresolved
Project acceptanceAgreed sample checks and electrical/mechanical acceptance criteriaComponent identification is being used as proof of assembly performance

If a number is obsolete or untraceable, ask for the manufacturer's lifecycle information and available replacement documentation. A sample and photos can support identification, but they do not guarantee that a replacement is available or suitable. Record unresolved items and the owner's disposition before purchase or production.

Send a Traceable RFQ Record

A useful record has separate fields: requested full number; maker; product drawing ID/revision; packing code and mapping; opposite-half number; pin-1 view/net list; cable construction and length; installation constraints; and acceptance criteria. Mark unknown values “confirmation required” instead of treating blanks as approval.

For example, if a supplier quote omits the packing suffix, retain the original requested string, request the exact offered order code and product mapping, and compare the drawings before accepting the change. This is a purchasing scenario, not a claim that the quoted parts differ mechanically. Use the cable assembly RFQ guide for the complete assembly definition, or Micro-Coaxial Cable Assemblies for the relevant application scope.

Trademark Notice

Manufacturer names, marks and example part numbers identify their respective owners' products and documentation. EDPcable is independent of those owners; these identification examples do not imply authorization, partnership or verified interchangeability.

FAQ04

Frequently asked questions

  • Does the final letter always identify a revision?

    No. Decode it using the exact series ordering guide. Keep the orderable product number, packing code and drawing revision in separate fields unless the manufacturer explicitly defines their relationship.

  • Can I remove a packaging suffix when ordering?

    Only after confirming the offered order code and its mapping to the required product with the manufacturer or authorized documentation. Also verify the packing and feeding requirements; a similar prefix is insufficient.

  • Can a series name or matching pitch prove compatibility?

    No. Confirm the complete mating pair, dimensions, latch, contact orientation and wiring. Assembly performance needs the project acceptance plan as well.

  • What should I do if a part number is discontinued?

    Check authoritative lifecycle and replacement information. Retain the original number and compare the proposed replacement with the approved drawings and samples. Availability and suitability remain open until reviewed.

Last updated: 2026-10-15
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