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Electronics product flowchart for NPI

By Mark Zetter

As I’ve written previously, OEM readers engaging EMS partners for their OEM NPI programs can expect capable contract manufacturers to carefully lead the OEM through an established and itemized list of NPI product requirements and process flow.

To help OEMs better anticipate and understand this process the following steps to a typical NPI timeline are spelled out (letters A through G) followed by an NPI flowchart image corresponding to each NPI time letter/step. (Click for a list of providers in our company directory offering new product introduction (NPI) services – prototyping, tool and mold design, process technology development, assembly documentation…)

Most standard NPI business models contain four turn time variations.

These include the standard five-day turn, a three-day turn, a 48-hour turn, and the increasingly-popular 24-hour turn.

OEM product lot size requirements, in addition to other product business or service requirements, can each impact which turn schedule fits best.

 

NPI Timeline

A. Per quote checklist

B. Per NPI checklist

C. Material audit: 1 day
Audit/IQA per BOM & AVL

D. Stencil: 1 day
Fixtures: 3 – 4 days
ICT fixture: 4 – 6 wks

E. Turn time: 3 – 5 days (Notes: Build 2 boards for internal FA)

Checkpoints:
1. Paste height, X-R Chart
2. Feeder audit
3. 100% inspection at:
-Post -Reflow
-Post – Wave
-Final Inspection
-ICT/FCT if required

F. Submit bds to customer for FA approval.

G. Includes:
1. Process Flow Chart
2. DFM / DFT (Visual)
3. Yields & breakdown
4. Critical process parameters
5. Paste height, X-R Chart

 

NPI Flowchart (image)


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