high precision heat sink: 6063-T5 aluminium, 0.5 mm fins at 1.5 mm pitch, 0.05 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 500 pcs, ships in 5 ...
high precision heat sink: 6063-T5 aluminium, 0.5 mm fins at 1.5 mm pitch, 0.05 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 500 pcs, ships in 5 ...
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High precision heat sinks are pressed from 6063-T5 aluminium on 250 T tooling, holding 0.05 mm over 100 mm flatness and 0.5 mm fin pitch within ±0.03 mm. They deliver 0.48 K/W at ΔT = 60 K in natural convection, with a 25 s cycle and 800,000 pcs monthly output. Black anodize Type II, 10-15 µm, protects fin roots after forming.
High precision heat sinks are pressed from 6063-T5 aluminium on 250 T tooling, holding 0.05 mm over 100 mm flatness and 0.5 mm fin pitch within ±0.03 mm. They deliver 0.48 K/W at ΔT = 60 K in natural convection, with a 25 s cycle and 800,000 pcs monthly output. Black anodize Type II, 10-15 µm, protects fin roots after forming.
A 2.0 mm base and 0.5 mm fins define this high precision heat sink. Pressed from 6063-T5 aluminium on 250 T tooling, it holds 0.05 mm over 100 mm and returns 0.48 K/W at ΔT = 60 K, natural convection. Monthly output runs at 800,000 pcs.
Stamping gives a repeatable 0.5 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.03 mm across a 800,000 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.
A single 250 T stroke forms the whole high precision heat sink, so part cost stops scaling with complexity. Tooling runs ±0.03 mm, and the 25 s cycle feeds a 800,000 pcs line.
Every stroke is dimensionally identical, so ±0.15 mm hole position carries across the batch. That is what makes switch-mode power supply volume programs repeatable.
The black anodize Type II, 10-15 µm 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 6063-T5 aluminium, supplied with black anodize Type II, 10-15 µm. For applications where switch-mode power supply 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 ±0.03 mm on fin pitch 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.
Flatness is checked on a granite surface plate, 25 °C against a 0.05 mm over 100 mm limit, and fin pitch is verified optically at ±0.03 mm. Reports go out with each lot.
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Each batch carries a CMM report from CMM plus granite flatness plate. We record flatness, pitch, base thickness and hole position, and flag anything outside ±0.20 mm before it leaves the line.
Incoming 6063-T5 aluminium is checked for thickness and hardness before it enters the press. After forming, CMM plus granite flatness plate confirms 0.05 mm over 100 mm and 1.5 mm against the drawing.
Flatness is measured on granite rather than on cast iron, because 0.05 mm over 100 mm at 40 x 40 x 22 mm reads differently on a plate that has not been lapped. Records keep both readings.
In switch-mode power supply, the 0.48 K/W rating determines how much airflow the enclosure still needs. At switch-mode power supply junction temperatures, 0.5 mm fins at 1.5 mm pitch keep the delta-T inside the sensor budget.
Where a high precision heat sink runs at switch-mode power supply volumes, part-to-part consistency decides field returns. ±0.03 mm on a 800,000 pcs run keeps the thermal curve inside one band.
See also: What Are the Thermal Effects of Anodizing and Coating on Heat Sinks?.
In switch-mode power supply, the base usually doubles as the mounting interface. 2.0 mm with 0.05 mm over 100 mm flat gives a stable surface for the switch-mode power supply thermal pad.
switch-mode power supply designs often run a 2.0 m/s forced-air path. 0.48 K/W at ΔT = 60 K, natural convection means switch-mode power supply can hold its target with fan power below the acoustic limit.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Fin thickness | 0.5 mm |
| Fin pitch | 1.5 mm |
| Fin height | 10 mm |
| Base thickness | 2.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | black anodize Type II, 10-15 µm |
| Size range | 40 x 40 x 22 mm |
Prototype is 5 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 CIF Rotterdam, and sea freight to Europe runs about 25 to 30 days after booking.
Yes. Standard is black anodize Type II, 10-15 µm. Powder coating to RAL 9005 adds about 0.1 mm to the base; zinc-nickel is better for grounding. Note that any added coating sits between 6063-T5 aluminium and the airflow, so we do not coat the fin roots.
We test at ΔT = 60 K, natural convection and report 0.48 K/W. That is a steady-state figure, not a transient: for switch-mode power supply first-power-on behaviour you need a different test, and we can run it on request.
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Yes, we ship as-pressed for customers who do their own finishing. The risk is handling marks on 0.5 mm fins, so we pack those parts with interleaving sheets inside Anti-static bag + wooden crate over 50 kg.
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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 switch-mode power supply programs and adds about 3 working days.
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The line sits in Dongguan in a single ISO9001 plant. 250 T presses cover the high precision heat sink family, and 800,000 pcs per month is current committed output.
Tooling is built in-house, which is how ±0.03 mm is held across a 800,000 pcs programme rather than drifting part by part.
We quote CIF Rotterdam and hold 500 pcs for sampling. Sampling is paid sample refundable with order, 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
Related reading: Stamped Heat Sinks vs Extruded: When Does Metal Stamping Make Sense for Cooling?.
See also: Aluminum vs Copper Heat Sink: Which Should You Choose?.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | 0.05 mm over 100 mm; ±0.03 mm fin pitch; ±0.15 mm hole position |
| Lead time | Not specified in article |
| MOQ | Not specified in article |
| Capacity | 800,000 pcs per month; 25 s cycle |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped 6063-T5 heat sink | High-volume switch-mode power supply programs | Requires 250 T tooling; limited to 0.5 mm fin profile |
| Extruded heat sink | Lower-volume or simpler fin geometries | Cannot hold 0.5 mm fin profile; pitch varies more than ±0.03 mm |
| Machined heat sink | Prototype or low-volume complex shapes | Higher part cost; anodize can be cut through at fin roots |
| Brazed fin heat sink | Applications needing mixed materials | Brazed joint can fail; no one-piece construction |
| Stage | Control | Record |
|---|---|---|
| Stamping | 250 T stroke forms base and fins in one piece; 25 s cycle | ±0.03 mm fin pitch; ±0.15 mm hole position |
| Flatness | Mounting face held directly from tool | 0.05 mm over 100 mm |
| Surface finish | Black anodize Type II applied after forming | 10-15 µm thickness |
| Inspection | Before every shipment | Dimensional and visual checks per batch |
| Thermal performance | Natural convection at ΔT = 60 K | 0.48 K/W |
It returns 0.48 K/W at ΔT = 60 K under natural convection. This is achieved with a 2.0 mm base and 0.5 mm fins pressed from 6063-T5 aluminium on 250 T tooling, holding 0.05 mm over 100 mm flatness for uniform thermal interface contact.
Fin pitch stays within ±0.03 mm across an 800,000 pcs run. The 250 T die forms every fin in one stroke, so pitch is repeatable. This is tighter than extrusion can hold for a 0.5 mm fin profile, ensuring consistent airflow and thermal performance.
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Yes. The 0.05 mm over 100 mm flatness is held directly from the tool on the mounting face. Because the base and fins are pressed as one piece, there is no brazed joint to distort. This keeps thermal interface contact uniform and repeatable.
Monthly output runs at 800,000 pcs. The 25 s cycle on a 250 T line feeds this volume. Every stroke is dimensionally identical, so ±0.15 mm hole position carries across the batch. This makes switch-mode power supply volume programs repeatable.
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We apply black anodize Type II, 10-15 µm, after forming. This protects corrosion resistance without cutting through at the fin roots, unlike machined alternatives. The finish is uniform because the part is pressed as one piece, with no brazed joints to mask or degrade.
It is pressed as one piece from 6063-T5 aluminium. The base and fins are formed in a single 250 T stroke, so there is no brazed joint to fail. This one-piece construction also eliminates joint thermal resistance and maintains 0.5 mm fin profile repeatability.
The cycle time is 25 s per stroke on a 250 T line. This feeds an 800,000 pcs monthly output. Lead time depends on order quantity and tooling availability, but the high-speed stamping process supports volume programs with repeatable ±0.03 mm fin pitch and ±0.15 mm hole position.
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| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | 0.05 mm over 100 mm flatness; 0.5 mm fin pitch within ±0.03 mm |
| Lead time | Not specified in article |
| MOQ | Not specified in article |
| Capacity | 800,000 pcs monthly output; 25 s cycle |
| Option | Best for | Trade-off |
|---|---|---|
| Stamping | Repeatable 0.5 mm fin profile with ±0.03 mm pitch across 800,000 pcs run | Requires 250 T tooling; limited to sheet thicknesses formable in one stroke |
| Extrusion | Longer parts with uniform cross-section | Cannot hold 0.5 mm fin profile as repeatably; pitch variation higher |
| Brazed assembly | Complex geometries with separate base and fins | Brazed joint can fail; additional process steps and cost |
The mounting face holds 0.05 mm over 100 mm flatness directly from the 250 T tool. This ensures uniform thermal interface contact. Inspection before every shipment verifies this tolerance.
The fin pitch is 0.5 mm with a tolerance of ±0.03 mm. Stamping forms every fin in one stroke, so pitch stays within ±0.03 mm across an 800,000 pcs run.
It delivers 0.48 K/W at ΔT = 60 K in natural convection. This performance is achieved with 6063-T5 aluminium and a 2.0 mm base and 0.5 mm fins.
The heat sink is pressed from 6063-T5 aluminium. It receives black anodize Type II, 10-15 µm, which protects fin roots after forming.
Monthly output runs at 800,000 pcs. The 25 s cycle on 250 T tooling feeds this 800,000 pcs line, ensuring consistent production.
Stamping gives a repeatable 0.5 mm fin profile that extrusion cannot hold. The die forms every fin in one stroke, so pitch stays within ±0.03 mm across an 800,000 pcs run, and there is no brazed joint to fail.
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Inspection before every shipment verifies flatness, fin pitch, and surface finish. The 0.05 mm over 100 mm flatness and ±0.03 mm fin pitch are checked to ensure they meet specifications.
| Parameter | Specification |
|---|---|
| Material | 6063-T5 aluminium |
| Fin thickness | 0.5 mm |
| Fin pitch | 1.5 mm |
| Fin height | 10 mm |
| Base thickness | 2.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Surface finish | black anodize Type II, 10-15 µm |
| Monthly capacity | 800,000 pcs |
| MOQ (prototype) | 500 pcs |
| Lead time (production) | 12 working days |
| Size range | 40 x 40 x 22 mm |
