disipador de calor de aluminio para 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 resista...
disipador de calor de aluminio para 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 resista...
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A disipador de calor de aluminio para seeed studio xiao in 6061-T6 aluminium delivers 0.35 K/W thermal resistance under ΔT = 60 K, natural convection. Fins are 1.0 mm thick at 2.0 mm pitch over a 1.5 mm base, and every batch ships with a CMM report at CMM 0.001 mm resolution.
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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Stamped construction tolerates batch variation better than extrusion: die wear shows up first as a measurable shift in fin pitch, which inspection catches at CMM 0.001 mm resolution rather than in the field.
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 disipador de calor de aluminio para 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.
The zinc-nickel plating, trivalent passivation finish is applied after forming, so corrosion protection does not get cut through at the fin roots the way it does on machined alternatives.
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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.
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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.
Sampling is AQL 0.65 for critical dimensions and 1.5 for general, with CMM 0.001 mm resolution on every first article. Deviations beyond ±0.10 mm trigger a full-lot sort.
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.
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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.
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In EV and OBC charger, the 0.35 K/W rating determines how much airflow the enclosure still needs. At EV and OBC charger junction temperatures, 1.0 mm fins at 2.0 mm pitch keep the delta-T inside the sensor budget.
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.
EV and OBC charger customers typically specify 6061-T6 aluminium for corrosion reasons and then hold the drawing to ±0.10 mm. The 120,000 pcs line absorbs the volume without a second source.
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Designers working on EV and OBC charger ask for flatness before they ask for thermal data, because EV and OBC charger assembly is automated and a non-flat base stops the line.
| 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 |
MOQ is 50 pcs for a prototype run and 1000 pcs for production. Below the prototype quantity the tooling amortisation dominates the unit cost, so we quote the sample route instead: sample fee 30-80 USD.
Every lot is inspected with CMM 0.001 mm resolution, and the report is included in the shipment. We check 0.05 mm over 100 mm, 2.0 mm, 1.5 mm and hole position against ±0.10 mm. Lot traceability from coil to carton is kept for 10 years.
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.
Extrusion is cheaper above roughly 500,000 pieces per year and gives a smoother profile. Stamping wins below that and wherever fin gauge drops below 0.5 mm, because extrusion cannot hold 1.0 mm consistently. For EV and OBC charger prototypes, tooling cost usually decides it.
0.05 mm over 100 mm measured on granite surface plate, 20 °C. This is the number that matters for EV and OBC charger, because the thermal pad needs even contact. If your assembly needs better, say so and we can add a skim operation.
The line sits in Dongguan in a single ISO9001 plant. 160 T presses cover the disipador de calor de aluminio para seeed studio xiao family, and 120,000 pcs per month is current committed output.
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.
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.
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Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
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| 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 |
