aluminum heat sink for seeed studio xiao: 6061-T6 aluminium, 1.0 mm fins at 2.0 mm pitch, 0.05 mm over 100 mm flatness, 0.35 K/W thermal resistance. MOQ 50 p...
aluminum heat sink for seeed studio xiao: 6061-T6 aluminium, 1.0 mm fins at 2.0 mm pitch, 0.05 mm over 100 mm flatness, 0.35 K/W thermal resistance. MOQ 50 p...
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Our aluminum heat sink for seeed studio xiao uses 6061-T6 aluminium with 1.0 mm fins and a 1.5 mm base flat to 0.05 mm over 100 mm. Rated 0.35 K/W at ΔT = 60 K, it supports EV and OBC charger builds at 120,000 pcs monthly output with zinc-nickel plating, trivalent passivation as standard.
Stamping gives a repeatable 1.0 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 120,000 pcs run.
Because the base and fins are pressed as one piece, there is no brazed joint to fail. 0.05 mm over 100 mm flatness on the mounting face is held directly from the tool, which keeps thermal interface contact uniform.
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The one-piece geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. Nothing sits between 6061-T6 aluminium and the airflow except the stamped surface itself.
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One supplier now covers 1.0 mm to 1.0 mm fin gauges from the same 160 T press family, so a thermal redesign is a tooling change rather than a new vendor.
Pressing 6061-T6 aluminium keeps the aluminum heat sink for seeed studio xiao light, from 280 g depending on envelope, without sacrificing fin density, which matters where airflow path length is already fixed by the enclosure.
Learn more about Custom Heat Sinks for Electronics: Extruded vs CNC vs Stamped vs Skived.
The standard material is 6061-T6 aluminium, supplied with zinc-nickel plating, trivalent passivation. For applications where EV and OBC charger exposure is a concern, we recommend the passivated route; where conductivity matters more than weight, copper C110 raises thermal performance and roughly doubles unit mass.
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General dimensions run to ±0.10 mm, with critical features such as ±0.03 mm on fin pitch held separately. Formed geometry inherits tooling repeatability of ±0.05 mm, and hole position is held to ±0.10 mm. Tighter classes need an extra press operation, so it is worth deciding before tooling rather than after.
Flatness is checked on a granite surface plate, 20 °C against a 0.05 mm over 100 mm limit, and fin pitch is verified optically at ±0.05 mm. Reports go out with each lot.
Each batch carries a CMM report from CMM 0.001 mm resolution. We record flatness, pitch, base thickness and hole position, and flag anything outside ±0.10 mm before it leaves the line.
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We inspect 1.0 mm fin tips for burr and crack after forming, because stamping can split a root without shifting any drawing dimension. Burr limit is set per part.
Compare it with What Are the Manufacturing Differences Between Bonded Fin and Skived Fin Heat Sinks?.
Final containment is PE bag + export carton, 20 kg per carton. Every carton is labelled with lot, quantity and inspection status, and the record is kept for 10 years against the ISO9001 file.
EV and OBC charger programs are the reason this geometry exists. Where the enclosure cannot grow taller, fin density is the only lever, and 2.0 mm pitch with 1.0 mm stock is the practical ceiling for aluminium.
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For EV and OBC charger builds, the 0.05 mm over 100 mm mounting face matters as much as the thermal rating: it decides whether thermal interface material spreads evenly or pools at one end.
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EV and OBC charger packaging and vibration rules push toward one-piece construction. A stamped aluminum heat sink for seeed studio xiao has no adhesive to creep, which is the usual failure mode in two-part coolers.
For EV and OBC charger prototypes, 7 working days covers drawing review and first article. Production lots move to 12 working days once the ±0.05 mm capability is signed off.
| Parameter | Value / Range |
|---|---|
| Material | 6061-T6 aluminium |
| Fin thickness | 1.0 mm |
| Fin pitch | 2.0 mm |
| Fin height | 22 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.35 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Size range | 20 x 20 x 10 mm |
Prototype is 7 working days from drawing approval; production is 12 working days after the first article is signed off. Tooling for a new part takes . We quote FOB Shenzhen, and sea freight to Europe runs about 25 to 30 days after booking.
Yes, we ship as-pressed for customers who do their own finishing. The risk is handling marks on 1.0 mm fins, so we pack those parts with interleaving sheets inside PE bag + export carton, 20 kg per carton.
Yes. We can add clips, screws or a fan shroud as a kitted assembly, with the parts bagged and labelled per set. This is common in EV and OBC charger programs and adds about 3 working days.
We supply a 2D drawing with the CMM report, and 3D STEP on request. Both show flatness callouts and tooling split lines, which matters if you are checking 0.05 mm over 100 mm in your own assembly.
Yes. Send your enclosure airflow, inlet temperature and the heat load to be dissipated, and we will run a steady-state model and return a suggested 1.0 mm and 2.0 mm combination. That usually saves one tooling iteration.
Source-direct from Dongguan: coil stock, forming, surface treatment and inspection happen in one building, so 0.05 mm over 100 mm flatness is verified before the part is packed.
Production runs on 8 s cycles with in-line vision on 0.05 mm over 100 mm. That is what keeps a 120,000 pcs commitment credible in peak season.
We quote FOB Shenzhen and hold 50 pcs for sampling. Sampling is sample fee 30-80 USD, so a first evaluation does not require a production commitment.
Learn more about What Is a Skived Heat Sink? High-Density Fin Manufacturing Explained.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
Further technical detail: BQUQ Die Cast Aluminum Heatsink – Precision CNC Finishing, No MOQ.
| Parameter | Specification |
|---|---|
| Material | 6061-T6 aluminium |
| Fin thickness | 1.0 mm |
| Fin pitch | 2.0 mm |
| Fin height | 22 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.35 K/W |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Monthly capacity | 120,000 pcs |
| MOQ (prototype) | 50 pcs |
| Lead time (production) | 12 working days |
| Size range | 20 x 20 x 10 mm |
