From your Gerber to a finished, tested board — quoted in 2 hours.
One factory for fabrication, assembly and component sourcing. Send a Gerber and a BOM and you get one consolidated price, one lead time and one point of contact — no MOQ, prototypes from 5 pcs through to 10,000 pcs runs.
Transparent starting prices. No quote needed to see them.
- Free DFM report
- Ships in 24–48 h
- Worldwide tracked shipping
- Min trace / space 4 / 4 mil
- Free impedance report
- 3–5 day build
- BOM sourcing included
- AOI + X-Ray inspection
- Functional test optional
Indicative starting prices for standard specifications, excluding shipping and components. Final price confirmed after the free DFM check.
Real orders, moving through the plant right now.
Buyer, quantity, value and current production stage — anonymised and updated continuously. This is the same board our production team watches.
One upload matches your whole BOM against live stock.
Upload an Excel BOM and the system parses part numbers, flags missing or end-of-life lines, and proposes in-stock alternatives with a price per line before a human touches it.
Buyers trust a factory they can see.
- 3 SMT lines with 0201 capability and automatic optical inspection
- In-house PCB fabrication from 1 to 32 layers
- X-Ray, ICT and functional test cells on the same floor
- Live camera visit available on request for any active order
One factory, four regulated industries.
Medical devices
Low-volume, high-mix boards for diagnostic and monitoring equipment, with full traceability packs.
Industrial control
Motor drives, PLC I/O and power boards built to survive 24/7 duty in hot cabinets.
Automotive
IATF-aligned process control, AEC-Q sourcing and PPAP-style documentation on request.
IoT & wireless
RF-aware layout support, module bring-up and small-batch pilot runs before crowdfunding.
3,600 m² in Shenzhen, 168 people, 15 years of small-batch PCBA.
YouHuYou Components was set up in 2011 to serve the awkward middle of the market: orders too small for a big contract manufacturer and too complex for a quick-turn broker. Everything under one roof — fabrication, assembly, test and component sourcing.
Production equipment
| SMT & assembly line | |
|---|---|
| SMT lines | 3 lines, 2 × Hanwha + 1 × Yamaha |
| Placement rate | 28,000 CPH per line |
| Minimum chip | 0201 (01005 on request) |
| IC package range | QFN, QFP, BGA, CSP, POP up to 0.35 mm pitch |
| Board size | 50 × 50 mm to 520 × 460 mm |
| Through-hole | Selective and wave soldering, 2 lines |
| Fabrication & inspection | |
|---|---|
| PCB fabrication | 1–32 layers, in-house + partner fabs |
| AOI | 3D post-reflow, in-line |
| X-Ray | BGA void and ball inspection, 1 unit |
| ICT / FCT | Custom jigs, 6 test benches |
| First article | FAI report with every new assembly |
| X-Ray, ICT, FCT | Quoted per project, not hidden in unit price |
How an order moves through the plant
DFM & quote
Gerber and BOM reviewed for manufacturability, then one consolidated quote within 2 hours.
Fabrication
Boards fabricated or pulled from partner fabs, with material certificates retained.
Assembly & test
SMT, through-hole, AOI, X-Ray and functional test, with photos at every stage.
Ship & support
DHL / FedEx / UPS with tracked delivery, plus 12-month workmanship warranty.
Fabrication and assembly, quoted together.
Pick a tab for the process parameters, or use the calculator below to get an instant ballpark before you upload anything.
| Fabrication parameters | |
|---|---|
| Layer count | 1 – 32 layers |
| Min trace / spacing | 3 / 3 mil (4 / 4 mil standard) |
| Min drill | 0.15 mm mechanical, 0.1 mm laser |
| Board thickness | 0.4 – 3.2 mm |
| Copper weight | 1 – 6 oz outer, up to 4 oz inner |
| Materials | FR-4, high-Tg, Rogers, aluminium, flexible |
| Surface finish | HASL, lead-free HASL, ENIG, OSP, immersion silver |
| Solder mask | Green, black, blue, red, white, matte |
| Max board size | 600 × 500 mm |
| Quick-turn lead time | 24 h (2L) · 3 days (4L) · 5 days (6L+) |
Free DFM before payment
Every Gerber is checked for annular ring, solder-mask slivers, copper-to-edge clearance and drill aspect ratio. You get the report whether or not you place the order.
Typical volume band
Same process control across all bands; the price per board simply falls as quantity rises.
| Assembly parameters | |
|---|---|
| Process | SMT, through-hole, mixed-technology |
| Min component | 0201 chip, 0.35 mm pitch IC |
| BGA / CSP | Yes, with X-Ray verification |
| Board size | 50 × 50 mm to 520 × 460 mm |
| Placement rate | 28,000 CPH per line |
| Stencils | Laser-cut, retained for repeat orders |
| Inspection | AOI, X-Ray, ICT, FCT, visual |
| Conformal coating | Available on request |
| Order band | 5 – 10,000 pcs |
| Prototype lead time | 3–5 days after parts arrive |
| Test & inspection equipment | |
|---|---|
| AOI | 3D post-reflow, in-line |
| X-Ray | BGA void %, ball integrity |
| ICT | Custom bed-of-nails jigs |
| FCT | Application-specific functional test |
| FAI | First article inspection report |
| Burn-in | Temperature cycling on request |
What we do not hide
Test jigs and burn-in are quoted as separate line items. If a board cannot be tested without tooling, we say so in the quote instead of adding a vague "test fee".
Instant ballpark calculator
PCB-only estimate. Component and assembly costs come from the BOM quote.
Estimate only. Tooling, impedance control and non-standard specs are quoted manually.
Send the BOM. We handle the shortage.
Sourcing, kitting and shortage resolution as a standalone service — you do not have to buy boards from us to use it. Every line comes back with a channel, a date code and an alternative if the original cannot be found.
Sourcing channels
Authorised distribution for volume lines, original factory stock and a vetted independent network for allocation and end-of-life parts. The channel is written on every quote line.
Shortage & obsolescence
Cross-reference to pin-compatible and same-spec alternatives, with the difference stated in one sentence so your engineer can approve quickly.
Kitting for assembly
Consolidated kitting into one shipment, with reels re-packed for our own feeders or yours, and excess returned or held on consignment.
| BOM service at a glance | |
|---|---|
| SKUs in own stock | 100,000+ |
| Manufacturers & distributors | 3,000+ |
| BOM size handled | Up to 1,200 lines per project |
| Quote turnaround | 2 working hours |
| Minimum order | No MOQ |
| Quality documents | COC, date code, RoHS / REACH on request |
| Counterfeit policy | IDEA-STD-1010 inspection on independent stock |
Upload a BOM and get line-by-line pricing.
Excel, CSV or a plain list of part numbers and quantities. If a part is hard to find, you will see the alternative in the same reply.
How a component page is structured
Every part number gets its own URL with the trading information above the fold, then the specification table, supply detail, compliance, and the three kinds of alternative that matter when a line is short.
| Block | What it contains |
|---|---|
| 1 | Breadcrumb + part number as the H1 |
| 2 | Stock · price tiers · MOQ · lead time |
| 3 | 8–12 row key specification table |
| 4 | Brand, date code, package, packaging |
| 5 | Quality, COC, RoHS / REACH, photos |
| 6 | Pin-to-pin, same-spec and functional alternatives |
| 7 | RFQ form + related part numbers |
Four buying scenarios, four different sets of requirements.
Low volume, high mix, every revision documented.
Diagnostic and monitoring hardware where a design change may need to be re-verified. We hold revision-specific gerbers, stencils and inspection records so a re-order three years later is built the same way.
Boards that must survive a hot cabinet for a decade.
Motor drives, PLC I/O and power conversion. High copper weights, thermal management and heavy through-hole content built on lines set up for it.
Process control that matches an automotive audit.
IATF-aligned documentation, AEC-Q qualified sourcing and traceability down to the reel. PPAP-style packages can be prepared when your customer demands them.
From first prototype to a small production run.
RF-aware layout review, module bring-up and pilot batches sized for a crowdfunding campaign or a first field trial.
Answers to the questions buyers actually ask.
Written for engineers and purchasing managers comparing suppliers — including the parts that are inconvenient to say out loud.
How is PCBA priced, and why does the number move?
Can I supply my own components?
What is the real minimum order?
How do you handle a part that is on allocation?
Which files do you need to quote?
What happens if the boards are wrong?
Long-form articles
How to choose a PCBA supplier12 min→ Why your quote is higher than the last one8 min→ Top 10 DFM mistakes that add a week10 min→ Negotiating MOQ without giving up quality7 min→Four to six new pieces a month, each ending in a quote box rather than a newsletter sign-up.
Still comparing?
Send the same Gerber and BOM to three suppliers, including us. We would rather lose on price with the real numbers on the table than win on a number that changes later.
STM32F103C8T6
ARM Cortex-M3 MCU 72 MHz, 64 KB Flash, 20 KB RAM, LQFP48 — STMicroelectronics
Key specifications
| Manufacturer part number | STM32F103C8T6 |
| Brand | STMicroelectronics |
| Category | ARM Cortex-M3 Microcontroller |
| Description | 32-bit MCU, 72 MHz, 64 KB Flash, 20 KB SRAM, LQFP48 |
| Core | ARM Cortex-M3 |
| Frequency | 72 MHz |
| Memory | 64 KB Flash / 20 KB SRAM |
| Operating voltage | 2.0 – 3.6 V |
| Package / case | LQFP48 |
| Mounting type | SMD |
| Operating temperature | -40℃ to +85℃ |
| MSL | MSL 3 |
Supply information
| Brand | STMicroelectronics (original) |
| Date code | 2409 — new, factory sealed |
| Packaging | Tray / Tape & Reel (1,500 pcs per reel) |
| Lead time | In stock, ships within 24 h |
| MOQ | No MOQ |
| Source channel | Authorised distribution |
Quality & compliance
| Inspection | Visual + dimensional; X-Ray on request |
| Documents | COC, RoHS / REACH declaration, datasheet |
| Counterfeit policy | IDEA-STD-1010 inspection for independent-channel stock |
| Photos | Actual warehouse photos supplied before shipment on request |
Alternatives & cross reference
Related part numbers
Part number is filled in for you.
Three fields to start. Everything else is optional.
Attach the Gerber and BOM if you have them; if not, a description is enough for a first reply. Quotes go out within 2 working hours on business days.
Direct lines
| Sales & engineering desk | [email protected] |
| +86 156 7526 1247 | |
| Shenzhen | Bao'an District, Shenzhen, China |
| Hong Kong | Kwun Tong, Kowloon |
| First reply | Within 2 working hours |
| DFM report | With the quote, free |
| BOM sourcing quote | Same reply, line by line |
| Prototype lead time | 3–5 days from parts in |
| Payment | PayPal, Payoneer, T/T |
| Escalation | Named engineer for production issues |
Prefer to talk?
Quotations in English as standard; 简体中文, Español, Deutsch and Русский supported on request. Customs and packing documents can be issued in the destination language.
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