heat sink compound: ADC12 die-cast aluminium, 0.4 mm fins at 4.0 mm pitch, 0.10 mm over 100 mm flatness, 0.62 K/W thermal resistance. MOQ 50 pcs, ships in 72...
heat sink compound: ADC12 die-cast aluminium, 0.4 mm fins at 4.0 mm pitch, 0.10 mm over 100 mm flatness, 0.62 K/W thermal resistance. MOQ 50 pcs, ships in 72...
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This heat sink compound is stamped from ADC12 die-cast aluminium with 0.4 mm fins at 4.0 mm pitch, delivering a measured thermal resistance of 0.62 K/W at ΔT = 60 K. The 1.0 mm base holds 0.10 mm over 100 mm flatness, verified on a granite plate. A single 25 T stroke forms the whole part, and the 18 s cycle feeds a 50,000 pcs per month ISO9001 line in Dongguan.
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This heat sink compound is stamped from ADC12 die-cast aluminium with 0.4 mm fins at 4.0 mm pitch, delivering a measured thermal resistance of 0.62 K/W at ΔT = 60 K. The 1.0 mm base holds 0.10 mm over 100 mm flatness, verified on a granite plate. A single 25 T stroke forms the whole part, and the 18 s cycle feeds a 50,000 pcs per month ISO9001 line in Dongguan.
This heat sink compound is stamped from ADC12 die-cast aluminium with 0.4 mm fins at 4.0 mm pitch, giving a measured thermal resistance of 0.62 K/W at ΔT = 60 K. The 1.0 mm base holds 0.10 mm over 100 mm, verified on a granite plate, and the assembly runs at 50,000 pcs per month from a single ISO9001 line in Dongguan.
Because the base and fins are pressed as one piece, there is no brazed joint to fail. 0.10 mm over 100 mm flatness on the mounting face is held directly from the tool, which keeps thermal interface contact uniform.
A single 25 T stroke forms the whole heat sink compound, so part cost stops scaling with complexity. Tooling runs ±0.03 mm, and the 18 s cycle feeds a 50,000 pcs line.
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The one-piece geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. Nothing sits between ADC12 die-cast aluminium and the airflow except the stamped surface itself.
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Pressing ADC12 die-cast aluminium keeps the heat sink compound light, from 650 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.
The standard material is ADC12 die-cast aluminium, supplied with zinc-nickel plating, trivalent passivation. For applications where LED high bay lighting 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 ±0.15 mm, with critical features such as ±0.05 mm on mounting hole position held separately. Formed geometry inherits tooling repeatability of ±0.03 mm, and hole position is held to ±0.15 mm. Tighter classes need an extra press operation, so it is worth deciding before tooling rather than after.
Each batch carries a CMM report from optical comparator 0.002 mm. We record flatness, pitch, base thickness and hole position, and flag anything outside ±0.15 mm before it leaves the line.
Incoming ADC12 die-cast aluminium is checked for thickness and hardness before it enters the press. After forming, optical comparator 0.002 mm confirms 0.10 mm over 100 mm and 4.0 mm against the drawing.
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 ±0.15 mm trigger a full-lot sort.
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We inspect 0.4 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.
For LED high bay lighting builds, the 0.10 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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Where a heat sink compound runs at LED high bay lighting volumes, part-to-part consistency decides field returns. ±0.03 mm on a 50,000 pcs run keeps the thermal curve inside one band.
Designers working on LED high bay lighting ask for flatness before they ask for thermal data, because LED high bay lighting assembly is automated and a non-flat base stops the line.
LED high bay lighting designs often run a 2.0 m/s forced-air path. 0.62 K/W at ΔT = 60 K, natural convection means LED high bay lighting can hold its target with fan power below the acoustic limit.
| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Fin thickness | 0.4 mm |
| Fin pitch | 4.0 mm |
| Fin height | 10 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.10 mm over 100 mm |
| Thermal resistance | 0.62 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Size range | 120 x 80 x 50 mm |
General dimensions run to ±0.15 mm; critical ones such as ±0.05 mm on mounting hole position are held separately. Formed features inherit tooling repeatability of ±0.03 mm. If your drawing needs tighter, tell us before tooling so we can plan the extra press operation.
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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 0.4 mm consistently. For LED high bay lighting prototypes, tooling cost usually decides it.
We test at ΔT = 60 K, natural convection and report 0.62 K/W. That is a steady-state figure, not a transient: for LED high bay lighting first-power-on behaviour you need a different test, and we can run it on request.
The family covers 120 x 80 x 50 mm, with unit weights from 650 g. Because the base is pressed, new sizes are a die insert change rather than a new press line, so development is usually 2 weeks rather than 8.
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 LED high bay lighting programs and adds about 3 working days.
Tooling is built in-house, which is how ±0.03 mm is held across a 50,000 pcs programme rather than drifting part by part.
Quality staff sit beside the press, not in a separate room. Deviations on 4.0 mm or 0.10 mm over 100 mm stop the run at the tool rather than at final inspection.
We quote FOB Guangzhou and hold 50 pcs for sampling. Sampling is sample fee 30-80 USD, so a first evaluation does not require a production commitment.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
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| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Tolerance | ±0.03 mm tooling |
| Lead time | Standard for this process |
| MOQ | Standard for this process |
| Capacity | 50,000 pcs per month |
| Option | Best for | Trade-off |
|---|---|---|
| One-piece stamped heat sink compound | Uniform thermal interface contact and no brazed joint | Requires tooling with ±0.03 mm tolerance |
| Two-part cooler with adhesive layer | Applications where separate base and fin materials are needed | Added thermal path and potential adhesive failure |
| ADC12 die-cast aluminium | Lightweight heat sink compound from 650 g | Fin density limited by die-casting process |
| Zinc-nickel plating with trivalent passivation | Corrosion resistance on stamped surface | Additional finishing step |
| Stage | Control | Record |
|---|---|---|
| Stamping | Single 25 T stroke forms whole part | 18 s cycle time |
| Flatness | 0.10 mm over 100 mm on mounting face | Verified on granite plate |
| Thermal performance | 0.62 K/W at ΔT = 60 K | Measured thermal resistance |
| Tooling | ±0.03 mm | Tooling runs |
| Shipment | Inspection before every shipment | ISO9001 line in Dongguan |
The measured thermal resistance is 0.62 K/W at ΔT = 60 K. This is achieved with 0.4 mm fins at 4.0 mm pitch stamped from ADC12 die-cast aluminium, and the one-piece design removes the adhesive layer found in two-part coolers.
It is stamped from ADC12 die-cast aluminium. The material keeps the heat sink compound light, from 650 g depending on envelope, without sacrificing fin density. The zinc-nickel plating with trivalent passivation finish provides corrosion resistance on the stamped surface.
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The 1.0 mm base holds 0.10 mm over 100 mm flatness on the mounting face, verified on a granite plate. This flatness is held directly from the tool, which keeps thermal interface contact uniform and supports the 0.62 K/W thermal resistance.
The assembly runs at 50,000 pcs per month from a single ISO9001 line in Dongguan. The 18 s cycle feeds this line. Lead time is standard for this process; contact us for current scheduling based on your order quantity and tooling status.
A single 25 T stroke forms the whole heat sink compound, so part cost stops scaling with complexity. Tooling runs ±0.03 mm. Because the base and fins are pressed as one piece, there is no brazed joint to fail, and the one-piece geometry removes the adhesive layer found in two-part coolers.
The heat sink compound has 0.4 mm fins at 4.0 mm pitch. This fin density is achieved with ADC12 die-cast aluminium and a single 25 T stroke. The 1.0 mm base supports the fins and maintains 0.10 mm over 100 mm flatness on the mounting face.
Inspection before every shipment includes verification of the 0.10 mm over 100 mm flatness on a granite plate and the measured thermal resistance of 0.62 K/W at ΔT = 60 K. The ISO9001 line in Dongguan runs at 50,000 pcs per month with an 18 s cycle.
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| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Tolerance | ±0.03 mm (tooling) |
| Lead time | Not specified in article |
| MOQ | Not specified in article |
| Capacity | 50,000 pcs per month |
| Option | Best for | Trade-off |
|---|---|---|
| One-piece stamped heat sink compound | High-volume production, uniform thermal contact | Limited to stamping-compatible geometries |
| Two-part bonded cooler | Complex geometries requiring separate base and fins | Adhesive layer adds thermal resistance and potential failure point |
| Machined heat sink | Prototypes or low-volume, tight tolerances | Higher cost per part, longer cycle times |
| Extruded heat sink | Simple profiles, moderate volumes | Less design flexibility, secondary machining needed for fins |
The measured thermal resistance is 0.62 K/W at ΔT = 60 K. This value is achieved with 0.4 mm fins at 4.0 mm pitch and a 1.0 mm base, ensuring efficient heat dissipation for high-volume applications.
It is stamped from ADC12 die-cast aluminium. This alloy offers good thermal conductivity and die-casting fluidity, allowing thin fins and complex shapes. The one-piece design eliminates brazed joints, improving reliability and thermal performance.
The mounting face holds 0.10 mm over 100 mm flatness, verified on a granite plate. This ensures uniform thermal interface contact, reducing contact resistance and improving overall heat transfer efficiency.
The line in Dongguan produces 50,000 pcs per month with an 18 s cycle time. Lead time depends on order quantity and tooling availability; please contact us for a specific quote.
Yes, tooling runs ±0.03 mm, allowing customization of fin thickness and pitch. However, the current design uses 0.4 mm fins at 4.0 mm pitch for optimal thermal performance. Consult our engineers for tailored solutions.
Our manufacturing line is ISO9001 certified. We inspect every shipment to ensure specifications are met. Certificates of conformance are provided with each order.
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Parts are packed to prevent damage during transit, typically in trays or bulk bags. Custom packaging is available upon request. We ship worldwide from Dongguan, China.
| Parameter | Specification |
|---|---|
| Material | ADC12 die-cast aluminium |
| Fin thickness | 0.4 mm |
| Fin pitch | 4.0 mm |
| Fin height | 10 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.10 mm over 100 mm |
| Thermal resistance | 0.62 K/W |
| Surface finish | zinc-nickel plating, trivalent passivation |
| Monthly capacity | 50,000 pcs |
| MOQ (prototype) | 50 pcs |
| Lead time (production) | 20 working days |
| Size range | 120 x 80 x 50 mm |
