aluminum heat sink for seeed studio xiao: 6061-T6 aluminium, 0.5 mm fins at 3.0 mm pitch, 0.05 mm over 100 mm flatness, 0.85 K/W thermal resistance. MOQ 200 ...
aluminum heat sink for seeed studio xiao: 6061-T6 aluminium, 0.5 mm fins at 3.0 mm pitch, 0.05 mm over 100 mm flatness, 0.85 K/W thermal resistance. MOQ 200 ...
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The aluminum heat sink for Seeed Studio XIAO uses 6061-T6 aluminium with 3.0 mm fin pitch and 0.5 mm stock, holding 0.05 mm flatness over 100 mm on the mounting face. Thermal resistance is 0.85 K/W, verified at 0.002 mm per lot on an optical comparator. A single 63 T stroke forms each 200 x 100 x 80 mm part in an 8 s cycle, supporting a 50,000 pcs line.
The aluminum heat sink for seeed studio xiao combines 3.0 mm fin pitch with 0.5 mm stock in 6061-T6 aluminium, so 200 x 100 x 80 mm parts keep 0.05 mm over 100 mm on the mounting face. Thermal resistance is 0.85 K/W, measured at optical comparator 0.002 mm per lot.
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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.
A single 63 T stroke forms the whole aluminum heat sink for seeed studio xiao, so part cost stops scaling with complexity. Tooling runs ±0.05 mm, and the 8 s cycle feeds a 50,000 pcs line.
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.
One supplier now covers 0.5 mm to 0.5 mm fin gauges from the same 63 T press family, so a thermal redesign is a tooling change rather than a new vendor.
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.
The standard material is 6061-T6 aluminium, supplied with zinc-nickel plating, trivalent passivation. For applications where 1U server and AI accelerator 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.
General dimensions run to ±0.20 mm, with critical features such as ±0.05 mm on mounting hole position 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.
Incoming 6061-T6 aluminium is checked for thickness and hardness before it enters the press. After forming, optical comparator 0.002 mm confirms 0.05 mm over 100 mm and 3.0 mm against the drawing.
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Sampling is AQL 0.65 for critical dimensions and 1.5 for general, with optical comparator 0.002 mm on every first article. Deviations beyond ±0.20 mm trigger a full-lot sort.
We inspect 0.5 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.
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.
In 1U server and AI accelerator, the 0.85 K/W rating determines how much airflow the enclosure still needs. At 1U server and AI accelerator junction temperatures, 0.5 mm fins at 3.0 mm pitch keep the delta-T inside the sensor budget.
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For 1U server and AI accelerator 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.
1U server and AI accelerator designs often run a 2.0 m/s forced-air path. 0.85 K/W at ΔT = 60 K, natural convection means 1U server and AI accelerator can hold its target with fan power below the acoustic limit.
For 1U server and AI accelerator prototypes, 5 working days covers drawing review and first article. Production lots move to 15 working days once the ±0.05 mm capability is signed off.
| Parameter | Value / Range |
|---|---|
| Material | 6061-T6 aluminium |
| Fin thickness | 0.5 mm |
| Fin pitch | 3.0 mm |
| Fin height | 10 mm |
| Base thickness | 3.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.85 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Size range | 200 x 100 x 80 mm |
Every lot is inspected with optical comparator 0.002 mm, and the report is included in the shipment. We check 0.05 mm over 100 mm, 3.0 mm, 3.0 mm and hole position against ±0.20 mm. Lot traceability from coil to carton is kept for 10 years.
6061-T6 aluminium is the standard choice. For 1U server and AI accelerator in a corrosive environment we specify 6063-T5 with zinc-nickel plating, trivalent passivation; for the highest conductivity we move to copper C110, which raises cost and weight but drops thermal resistance by roughly half at the same envelope.
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General dimensions run to ±0.20 mm; critical ones such as ±0.05 mm on mounting hole position are held separately. Formed features inherit tooling repeatability of ±0.05 mm. If your drawing needs tighter, tell us before tooling so we can plan the extra press operation.
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Standard packing is PE bag + export carton, 20 kg per carton. We quote FOB Guangzhou. Export cartons are labelled with lot, quantity and inspection status, and full documentation including the inspection report travels with the goods.
Skived fins are milled, so you get thin, tall fins and higher density in a given height, but the cost scales directly with fin area. Stamping gives the same result in one stroke at a much lower unit cost below 50,000 pcs. For 1U server and AI accelerator in a fixed-height enclosure, stamped is normally the right answer.
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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.
Our 1U server and AI accelerator experience runs back to the first tooling programme in 2015. That history is why the standard zinc-nickel plating, trivalent passivation and ±0.20 mm are conservative rather than optimistic.
Quality staff sit beside the press, not in a separate room. Deviations on 3.0 mm or 0.05 mm over 100 mm stop the run at the tool rather than at final inspection.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
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| Parameter | Value / Range |
|---|---|
| Material | 6061-T6 aluminium |
| Tolerance | ±0.05 mm tooling; 0.05 mm over 100 mm flatness |
| Lead time | Standard for this process |
| MOQ | Standard for this process |
| Capacity | 50,000 pcs line; 8 s cycle |
| Option | Best for | Trade-off |
|---|---|---|
| One-piece stamped 6061-T6 | Uniform thermal contact, no joint failure | Tooling change for redesign |
| Two-part bonded cooler | Complex geometries | Adhesive layer adds thermal resistance |
| Zinc-nickel plated trivalent passivation | Corrosion protection after forming | Plating adds process step |
| 0.5 mm fin gauge | Compact XIAO builds | Lower stiffness than thicker gauges |
| 3.0 mm fin pitch | Balanced airflow and surface area | Not for ultra-dense fin arrays |
| Stage | Control | Record |
|---|---|---|
| Forming | Single 63 T stroke, ±0.05 mm tooling | 8 s cycle log |
| Flatness | 0.05 mm over 100 mm on mounting face | Optical comparator 0.002 mm per lot |
| Thermal | 0.85 K/W thermal resistance | Lot measurement record |
| Plating | Zinc-nickel trivalent passivation after forming | Plating batch record |
| Final | Inspection before every shipment | Shipment inspection report |
The thermal resistance is 0.85 K/W. This is measured on the one-piece 6061-T6 aluminium body with 3.0 mm fin pitch and 0.5 mm stock. The 0.05 mm over 100 mm flatness on the mounting face helps keep thermal interface contact uniform, supporting consistent performance in 200 x 100 x 80 mm parts.
The heat sink is made from 6061-T6 aluminium. After forming, it receives zinc-nickel plating with trivalent passivation. This finish protects corrosion without cutting through at the fin roots, since it is applied after the single 63 T stroke forms the one-piece base and fins.
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Tooling runs ±0.05 mm. The mounting face holds 0.05 mm over 100 mm flatness directly from the tool. Inspection uses an optical comparator at 0.002 mm per lot. These tolerances apply to the 200 x 100 x 80 mm aluminum heat sink for Seeed Studio XIAO and similar parts from the same press family.
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A single 63 T stroke presses the base and fins as one piece, eliminating brazed joints or adhesive layers. The 8 s cycle feeds a 50,000 pcs line. Tooling runs ±0.05 mm, and the one-piece geometry removes the thermal path interruption found in two-part coolers.
The line supports 50,000 pcs with an 8 s cycle time. This capacity comes from the single 63 T press stroke that forms the whole aluminum heat sink for Seeed Studio XIAO. Part cost stops scaling with complexity because the one-piece geometry is formed in one operation.
Yes. One supplier covers 0.5 mm to 0.5 mm fin gauges from the same 63 T press family. A thermal redesign becomes a tooling change rather than a new vendor. The 3.0 mm fin pitch and 0.5 mm stock are standard, and tooling runs ±0.05 mm for consistent results.
Inspection occurs before every shipment. The 0.05 mm over 100 mm flatness on the mounting face is checked, and thermal resistance is measured at 0.85 K/W. An optical comparator verifies 0.002 mm per lot. The zinc-nickel trivalent passivation finish is also inspected after forming.
| Parameter | Specification |
|---|---|
| Material | 6061-T6 aluminium |
| Fin thickness | 0.5 mm |
| Fin pitch | 3.0 mm |
| Fin height | 10 mm |
| Base thickness | 3.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.85 K/W |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Monthly capacity | 50,000 pcs |
| MOQ (prototype) | 200 pcs |
| Lead time (production) | 15 working days |
| Size range | 200 x 100 x 80 mm |
