How It Works — Quanta Source
Quanta Source
How it works Our platform FAQ About Contact Submit excess list
THE PROCESS

Selling excess should be the easiest thing you do this quarter.

One list, one named trader, one clean transaction — from first contact to funds received. Here's exactly what happens, at every step.
SELLING YOUR EXCESS

How excess buying works

Turning surplus electronic components back into capital, in nine simple steps. No haggling marathons, no logistics headaches — you list, we quote, we collect. Here's how it works.
© Quanta Source
01 / 09 You're stuck with excess
STEP 01
You're stuck with excess
A pallet of surplus components sits in your warehouse — parts from a cancelled order, an over-buy, or an end-of-life design. It's taking up space and tying up capital.
STEP 02
List your part numbers
Sit down and record the manufacturer part numbers and quantities — a simple spreadsheet is perfect — then email the list to Quanta Source.
STEP 03
Receive your quotation
We review the list and reply with a clear, itemised offer for the parts we can buy. No obligation, no pressure.
STEP 04
Photograph your stock
A few quick photos of the pallet — labels, packaging, date codes — is all we need. Nothing to unpack, nothing to move.
STEP 05
Send the photos over
Email the photos back to Quanta Source and we'll confirm everything matches the quotation.
STEP 06
Paperwork made simple
We exchange the sales paperwork by email — a straightforward agreement covering the parts, the price, and collection.
STEP 07
Get paid
Payment for the goods lands directly in your company account — typically before the stock leaves your building.
STEP 08
We arrange collection
Quanta Source books and pays for the courier. When the van arrives, you simply hand over the boxes.
STEP 09
Cash in, space back
Money in the account, room back in the warehouse. That's excess handled — and we're here whenever the next surplus turns up.
Start with your list →
WHAT WE BUY

If it's on a BOM, we'll look at it

Factory-sealed or opened, current or end-of-life, single lines or entire warehouse inventories.
Semiconductors
MCUs, FPGAs, processors, analog & logic ICs
Memory & storage
DRAM, NAND, NOR, eMMC, modules
Passives
MLCCs, resistors, inductors, crystals — full reels preferred
Power
Regulators, converters, MOSFETs, IGBTs, modules
Connectors & electromech
Connectors, relays, switches, sockets
RF & optoelectronics
RF front-ends, LEDs, displays, sensors
Obsolete & EOL lines
Discontinued parts still in demand worldwide
Entire inventories
Site closures, product EOL, stock rationalisation — we take the whole problem
COMPONENT SOURCING

The parts you can't find, found.

Shortages, allocation, obsolescence, 52-week lead times — when the franchise channel can't deliver, our trading network usually can. The same platform that places excess stock gives us sight of inventory that never reaches the open market.
Obsolete and end-of-life specialists
Vetted supply lines in the UK, Europe & Asia
Inspection & documentation as standard
Send a requirement →
1
Send the part number and quantity. Target price and required date codes welcome.
2
We search the network — held stock, partner inventories and lines that never hit the open market.
3
Quote, inspect, deliver. Firm pricing, verified stock, insured shipping to your door.
Strictly confidential
Your list, pricing and identity are never disclosed without consent.
No obligation, ever
Accept all of an offer, part of it, or none. Listing costs nothing.
Reuse first
We buy stock we believe we can redeploy, so it returns to production rather than disposal.
GET STARTED

Ready when your list is

Confidential, no-obligation offer — typically within 48 hours.
Quanta Source — Electronic Components, Global Sourcing
An independent distributor and trader of electronic components. We buy excess inventory, source hard-to-find parts, and keep working components in circulation.
SITE
How it works Our platform FAQ About Contact Submit an excess list
OFFICES
LondonHQ
Hong Kong
Shenzhen
Melbourne
Full addresses →
CONTACT
hello@quanta-source.com
We aim to respond within one business day, across UK, Asia & Australia hours.
CERTIFIED & ACCREDITED
ISO 9001 certified ISO 14001 certified ISO 45001 certified Global Electronics Association member London Chamber of Commerce and Industry member British Chamber of Commerce in China member
© 2026 Quanta Source Ltd. All rights reserved. Registered in England & Wales, company no. 17356050. Registered office: 66 Paul St, London, EC2A 4NA.