OpeningYour drawing defines the part. We build it. Every copper embedded heat sink is machined to your exact geometry, verified with a CMM report before shipment. No surprises.We a
OpeningYour drawing defines the part. We build it. Every copper embedded heat sink is machined to your exact geometry, verified with a CMM report before shipment. No surprises.We are BQUQ, a precision
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing defines the part. We build it. Every copper embedded heat sink is machined to your exact geometry, verified with a CMM report before shipment. No surprises.
We are BQUQ, a precision manufacturing factory in Dongguan, China. 20 years on the floor. CNC, stamping, springs, and heat sinks under one roof. You send the file. We handle the rest.
Tolerance: ±0.02 mm on critical mating surfaces
Lead time: 7–12 days for prototypes, 15–20 days for production runs
No MOQ — one piece or ten thousand, same engineering rigor
Material certs: Mill certificates included with every batch
Specifications
Parameter
Value
Base material
C1100 copper, C1020 oxygen-free copper (optional)
Fin material
AL6063-T5, AL6061-T6, or pure copper fins
Embedded interface
Copper block press-fit or soldered into aluminum base
Machining process
4-axis / 5-axis CNC milling, CNC turning
Surface finish
As-machined 3.2 Ra, or anodized (black, clear) / nickel plating
Flatness
0.05 mm over 100 mm length
Dimensional tolerance
±0.02 mm (machined features), ±0.1 mm (overall envelope)
Thermal interface
Optional pre-applied phase-change TIM or graphite pad
Batch size
1–50,000 pieces
Inspection
100% critical dimension check, CMM report per batch
Lead time
Prototype: 7 days, Production: 15–20 days
We use high-speed CNC centers with spindle speeds up to 20,000 RPM. This gives clean fin edges and tight pitch control — critical when your fin density exceeds 8 fins per inch. For copper embedded designs, we machine the pocket to a depth tolerance of ±0.02 mm, then press-fit or reflow-solder the copper slug. The result: zero air gaps, maximum heat transfer.
Three Reasons Buyers Send Us Their Drawings
1. Batch-traceable quality.
Every heat sink gets a unique batch number. Raw material lot, machine operator, tool wear logs, and inspection data are linked to that number. If a problem appears in your field, we trace it back to the exact pour and pass. No guesswork.
2. Inspection report per batch.
You don't have to ask. Each shipment includes a dimensional report, material cert, and surface finish check. For critical aerospace or EV applications, we add full CMM data and X-ray inspection for solder voids. This is standard, not a paid extra.
3. One factory for CNC + stamping + springs + heat sinks.
Your assembly might need a stamped mounting clip, a compression spring for retention, and a machined heat sink. We make all three. One purchase order, one quality system, one shipping date. Fewer vendors, fewer delays, lower logistics cost.
Where These Parts Are Used
Copper embedded heat sinks solve one problem: spreading heat from a small, high-flux source into a larger finned area. Typical applications include:
IGBT modules in solar inverters and EV traction drives — copper slug under the die, aluminum fins for weight reduction
High-power LED arrays in stadium lighting and automotive headlamps — embedded copper pulls heat from the ceramic substrate
Telecom base station amplifiers — 5G MIMO modules with power density over 100 W/cm²
Laser diode mounts for industrial cutting and medical devices — oxygen-free copper for low thermal resistance
CPU/GPU server coolers — copper base with aluminum or copper fins, soldered or press-fit
Power supply rectifiers in railway and marine converters
If your thermal simulation shows a hotspot, we can machine a copper insert exactly where you need it. No need to redesign the whole fin stack.
Q: What is your MOQ?
A: No MOQ. We run one prototype or 50,000 pieces on the same machines. Prototype pricing is higher per piece, but tooling is free for standard shapes. For complex copper embedded designs, we may charge a small fixture fee — credited back on the first production order.
Q: How do you guarantee tolerance and quality?
A: We machine to ±0.02 mm on critical features. After machining, we measure with a CMM and provide a full report. For solder joints, we use X-ray inspection to check void ratio — typically under 5%. If anything is out of spec, we rework or remake at no cost.
Q: What is your lead time?
A: Prototypes ship in 7 days after drawing approval. Production runs of 1,000+ pieces ship in 15–20 days. For urgent needs, we can split the batch — ship half early, the rest within the standard window.
Q: Do you provide material certificates?
A: Yes. Every batch includes mill certificates for copper and aluminum. We also provide RoHS and REACH compliance documents on request. For aerospace or medical, we can add full traceability with heat numbers and mechanical test reports.
Send Your Drawing
Stop comparing quotes from middlemen. Talk to the factory that machines your parts. Send your 2D or 3D file — STEP, IGES, or PDF — and get a firm quote within 12 hours. We include material cost, machining time, surface finish options, and shipping terms. No vague estimates.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Your copper embedded heat sink, made in China, machined to your numbers, verified before it ships. That's the BQUQ standard. Send the drawing.
