IPC/WHMA-A-620 cable and harness manufacturing
IPC/WHMA-A-620 Cable & Harness Manufacturing Capability
Assembly, inspection, and batch records aligned to the Class requirements in the customer project file.
For OEM programs that specify IPC/WHMA-A-620 in drawings, BOM notes, or quality files, EDPcable aligns the joining process, inspection checkpoints, and release records to the required project Class. Certificate copies, Class coverage, and record formats are confirmed during RFQ / QA review; formal qualification documents remain the controlling evidence.
Capability scope
Best fit for projects that already define IPC Class requirements, joining methods, inspection level, and record format. If the Class requirement is unclear or the BOM is still moving, run engineering review first.
RFQ confirms Class 2 / Class 3 requirements, joining method, inspection level, and record format
Trained operators, inspection checkpoints, and batch records are aligned to the project quality file
Deliverables may include IPC joining inspection records, FAI, COC, batch labels, and certificate copies when agreed
Projects outside the confirmed Class or process scope are reviewed before commitment, not promised from the web page
Process Flow
| Step | Station / Action | Control Point | Output Record |
|---|---|---|---|
| Input review | Drawing / Class requirement / joining method / inspection level | Class mapped to in-house capability | Engineering review record |
| Training confirmation | Operator training status / training records | Trained operators matched to the Class | Training record confirmation |
| Sample build | Joining to the Class workmanship standard + internal inspection | Sample Class consistency | Sample inspection record |
| Customer sample confirmation | Customer acceptance / Class deviation discussion | Both sides confirm the release boundary | Sample confirmation record |
| Production execution | Trained operators join to the Class workmanship standard | Process Class stability | Process record |
| In-process IPC sampling | Joints inspected at the Class sampling ratio | Class deviation identification | IPC joining inspection record |
| Release confirmation | Batch sample + IPC re-review + COC | Class + records complete | COC + IPC inspection report |
Inspection Checkpoints
| Checkpoint | What is checked | Record | Limit |
|---|---|---|---|
| Incoming material match | Solder / termination parts / tooling meet the Class | Incoming record | Customer-supplied parts need a customer-defined Class standard |
| In-process joining inspection | Solder joints / terminations / shield joints to the Class | IPC joining inspection record (sampling table) | Sampling ratio per the Class standard |
| In-process visual inspection | Bend zones / routing / marking | Visual inspection record | Specific structure requirements confirmed in engineering review |
| Pre-shipment IPC re-review | Joints / labels / documents complete | Outgoing IPC re-review record | Class 3 projects have a fuller re-review scope |
Deliverable Records
| Deliverable Record | Stage | Use | Limit |
|---|---|---|---|
| IPC joining inspection record | Production | Evidence of Class consistency | Sampling to the Class, not 100% inspection |
| FAI (first article inspection) | First article / pilot | Align first-article joint quality with the Class | Needs a customer-confirmed Class standard |
| COC | Production | Batch release statement | Not equivalent to third-party certification |
| Training certificate copy | Ongoing | Customer internal audit input | Requires an agreed NDA |
| Batch label | Production | Trace to a specific batch + Class | Label format as agreed with the customer |
Applicable Projects
Best fit for cable and harness projects where drawings, BOM, or quality files specify IPC/WHMA-A-620 requirements, with focus on:
Class 3 joining requirements for medical OEM projects (patient monitoring / diagnostic)
Class 2 joining + 100% electrical testing for eDP / LVDS display projects
Class 2/3 end joining for micro-coax projects
Class 2 crimp sampling for IDC ribbon projects
Related Applications
IPC/WHMA-A-620 joining workmanship applies to display interconnect, medical device, FFC/FPC, IDC, LVDS, and micro-coax harness projects, and is often used together with 100% electrical testing, engineering review and drawing control, ISO 9001, and ISO 13485 medical manufacturing. When laser stripping, FPC-to-wire, or cleanroom medical harnesses are involved, the joining standard and the matching process requirements should be confirmed together.
Why EDPcable
IPC assembly requirements can be handled for display interconnect, medical device, FFC/FPC, IDC, LVDS, and micro-coax cable projects
Class requirements are reviewed before sampling so process setup and inspection records follow the same project basis
Certificate copies and training evidence can support customer audits under the agreed disclosure path
One-business-day first response, with the project team handling day-to-day quality-file coordination
FAQ
- Does EDPcable build to IPC/WHMA-A-620 workmanship standards?
- EDPcable uses IPC/WHMA-A-620 trained operators and project quality files for applicable cable and harness work. Certificate copies and Class coverage are disclosed during RFQ / QA review when needed.
- How do we choose Class 2 or Class 3?
- The customer defines the Class based on application risk. Class 3 is normally used for higher-reliability or safety-critical programs; it affects process setup, inspection scope, and records.
- Can inspection records follow our format?
- Yes. Standard EDPcable inspection records and COC can be used, or customer templates can be agreed during project review.
- What happens if a project is outside the current Class coverage?
- Projects outside the current Class coverage are reviewed before commitment. The limitation is clarified during RFQ so the project can be re-scoped or routed to a qualified path before sampling.
RFQ Inputs
For a new project inquiry, please share:
IPC Class requirement (Class 2 or Class 3, or a customer-defined standard)
Joining method (soldering / crimping / termination / mixed)
Inspection level requirement (accepted sampling ratio / 100% inspection)
IPC joining record format requirement (standard vs customer system)
Way to provide training certificate copies (direct sharing / internal audit report / NDA conditions)
Batch rhythm and Class consistency expectation
Send the IPC Class, drawing, and quality-file requirements before sampling
Confirming the Class, joining method, inspection scope, and record format early keeps samples, production, and audit documents on the same basis.