How to OEM request BOM quotes (RFQ) for EMS manufacturing

By Staff

Bill_of_MaterialsLike most niche industries the electronic contract manufacturing (CM) industry has some peculiar ways of conducting business. The following is an actual sample electronic OEM’s letter sent to a CM or electronics manufacturing services (EMS) provider requesting production quote pricing against a bill of materials (BOM) for a specific OEM program.

To put this BOM request-for-quote (RFQ) letter into perspective know the OEM writing this particular RFQ has done previous work with the EMS provider receiving this BOM RFQ letter. Here, the OEM also informs the EMS provider the OEM’s current EMS provider is not aware the OEM program being quoted will be transitioned from the OEM’s existing (current) EMS solutions provider to the EMS provider announced as the OEM program winner.


Dear [EMS provider],

Previously, you provided PCB assembly and box build quotes that were converted into a competitive price matrix for product supply. In addition, several EMS providers with competitive prices are being asked to provide itemized BOM quotes in order to evaluate competitiveness on the procurement of the materials for our product.

Several commodities are sourced by us [the OEM], those being custom parts or with tooling investment already incurred. At this time, those products will not require quotation. Printed circuit boards are in the process of being controlled by [OEM]. Gerber files are included in this RFQ package.

Our intent with this RFQ package is to validate the business assumptions on our strategic direction and select the EMS provider to discuss our comprehensive supply agreement for the complete turn key box build assembly of our products.

Search SMT/PCB assembly services

In your search results, you can further target provider options by choosing End Markets and/or Services.

Program volumes

We are currently looking at volumes of 1,000 to 2,000 [OEM] [P/N A] and [P/N B] per month (200 to 400 chassis per month.) By the end of [year] we predict to be shipping 4,000 to 5,000 [OEM] [P/N A] and [P/N B] per month (600 to 800 chassis per month)

Program timeline

Target date for quote submittal is [month, day, year, time].


[OEM] is providing the following in order for you to get component pricing:

  • [OEM] AVL
  • Mechanical component drawings such as cables and assemblies
  • Gerber data for PCBs
  • A consolidated BOM in MS Excel with all PCBA and mechanical components pricing
  • Authorization Letter for [OEM] contract prices

OEM contact/information

Please forward all quotes and questions to [OEM executive name] at [OEM].

  • Name
  • Title
  • Email
  • [OEM company name]
  • Address
  • Telephone

In summary, we expect your quote submission to have the following:

A detailed quote on the required BOM items per the [OEM] AVL in MS Excel format
A separate detailed quote on the required BOM items using your preferred components using crosses for alternate suppliers.

Special Note: Please be aware and sensitive the current CM has not been notified of this planned change. In discussions with suppliers or third parties please do not violate the spirit of our NDA.

Four types of contract electronics agreements
OEM decision-making outline for EMS provider selection
That high-priced EMS provider might be best
Determining your total landed cost
OEM tips for better box build quotes


Accompanying this letter would be the following RFQ information:

SECTION I – PCB assembly and mechanicals consolidated BOMs (Format: Excel)

PCB assembly and mechanicals consolidated BOMs with desired format for quoting and levels of total annual volumes for each component. This includes a [OEM] part number and description and actual manufacturer and the manufacturer part number from the [OEM] AVL, plus the annual volume breaks of relative components based on sales volumes. In most instances OEMs will note there may be more than one approved vendor per [OEM] part.

OEMs will instruct EMS providers that, if they can achieve further reduction in BOM cost by using vendors not on the [OEM] AVL the EMS provider(s) should include a separate consolidated BOM with alternate vendor pricing, which also includes a preferred manufacturer, part number, and cost and that all crosses must be an exact match.

  • OEM P/N
  • Part description
  • Lead time
  • Manufacturer #1
  • P/N for Manufacturer #1
  • Annual usage (typically quoted in three different volume buckets w/ volumes pre-determined by OEM)
  • Component P/N price ea (also quoted against volumes pre-determined by OEM)


SECTION II – PCBs (Format: Excel)

The PCB section displays a breakdown of the PCBs used in the OEM’s assemblies. Sometimes, PCB vendors are already selected with pricing but OEMs will encourage EMS providers to get PCB pricing and provide the following information with their quote:

  • OEM P/N
  • Part description
  • Layers
  • Square inches
  • Notes
  • Price
  • PCB vendor name


SECTION III – Programmables (Format: Excel)

This section breaks down different components requiring programming. Typically, an OEM might request BOM quotes on programmables as materials only and, that for programmables, the contract manufacturer provide either a labor rate charge or outside source charge stated as a per part rate matrix. OEMs will want the following details:

  • OEM Programmable P/N
  • Programming description
  • Component that is being programmed
  • EMS provider quote/fee for programming

Private message OEM peers. Access all content.

For electronic OEM professionals working in OEM companies. Connect with OEM peers and access exclusive content.

Add your comment


Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

TIP: Anyone can post article comments whether or not you are registered. But, if you register or log in you can attribute your posts to your user profile in GlobalNet Community.

Your email address will not be published. Required fields are marked *



You might also like:

Sourcing Managers & Category Managers Best Practices for Outsource EMS Manufacturing

Provider spotlight

About is the leading online destination helping electronics OEM decision makers make more informed decisions and reduce risk. We offer educational Webinars, thousands of original articles and helpful tools, a community of influencers who understand the challenges facing your company today, and a comprehensive directory of electronics provider services.

Copyright Venture Outsource, LLC. All Rights Reserved
The material on this site is for informational purposes only and is not a substitute for legal, financial or professional advice. Distribution and use of this material are governed by our User Terms Agreement and by copyright law. By using our Website you agree to site Terms and Privacy policies. For questions please contact at 1-888-860-1193 or visit