How to Buy Electronic Components: A Beginner’s RFQ Checklist
Buying electronic components starts with a clear request for quotation, or RFQ. When important details are missing, suppliers may quote different versions of a component. The lowest price may not cover what your project actually needs. Prepare these seven details before requesting a quote.
1. The Complete Manufacturer Part Number
Copy the full manufacturer part number from your approved bill of materials, including every suffix. Depending on the manufacturer, the final characters may identify packaging, temperature grade or another ordering option. Check the manufacturer’s ordering information instead of shortening the code.
2. The Manufacturer
Include the brand alongside the part number. If your project allows other manufacturers, identify those products as alternatives requiring engineering review. A similar description does not establish compatibility.
3. The Required Quantity
State the quantity for the current order. Identify future forecasts separately. For example: current requirement, 500 pieces; possible future demand, 2,000 pieces per quarter. Explain that a forecast is not a purchase commitment. This helps suppliers distinguish immediate demand from planning estimates.
4. Package and Delivery Format
Specify the package required by the approved design. Also state whether assembly requires tape and reel, cut tape or another delivery format. Package type and delivery packaging are different requirements. Ask the supplier to explain any difference between the quoted ordering code and the requested code before you approve the order.
5. Required Arrival Date
“Urgent” does not identify a usable schedule. Provide the date the components must arrive and the destination country or receiving location. Confirm whether the quoted lead time means dispatch or arrival. Align the delivery requirement with your production plan.
6. Source and Documentation Requirements
Define purchasing-channel, traceability and inspection requirements before ordering. Texas Instruments encourages customers to purchase through TI or TI-authorized distributors to help mitigate counterfeit risk. Check the relevant manufacturer’s guidance when setting requirements for other brands. Appearance or a low price alone cannot establish authenticity or quality.
7. Rules for Alternatives
State whether substitutes are allowed. If they are, require suppliers to list the full alternative ordering code and explain differences separately. Obtain written engineering approval before purchase. Similar speed, package descriptions or product names do not establish that a device is a drop-in replacement.
A Copyable RFQ Template
Manufacturer:
Complete manufacturer part number:
Current order quantity:
Package and delivery-format requirements:
Required arrival date and destination:
Sourcing and documentation requirements:
Engineering-approved alternatives, if any:
Add this instruction: “Please quote the exact requested part number. Identify alternatives separately and do not substitute without written approval.”
Compare Quotations on the Same Basis
When quotations arrive, compare the same part number, quantity, delivery requirement and documentation conditions. Check the validity period and any excluded costs before placing the order. A complete RFQ gives both buyer and supplier a clearer basis for the transaction.
Preparing an inquiry? Include your full part number, manufacturer, quantity, required arrival date and documentation requirements to communicate the need accurately.
Reference: Texas Instruments, Anti-counterfeit: https://www.ti.com/quality-reliability/quality/anti-counterfeit.html