aluminum heat sink 150mm: 1050A aluminium, 0.3 mm fins at 5.0 mm pitch, 0.10 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 50 pcs, ships in 7 wor...
aluminum heat sink 150mm: 1050A aluminium, 0.3 mm fins at 5.0 mm pitch, 0.10 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 50 pcs, ships in 7 wor...
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
The aluminum heat sink 150mm is a stamped 1050A aluminium part produced on 63 T tooling with ±0.05 mm repeatability across 300,000 pcs runs. It delivers 0.48 K/W at ΔT = 60 K, holds a 0.3 mm fin profile and ±0.10 mm hole position, and receives hard anodize Type III, 25-40 µm as standard for corrosion protection.
The aluminum heat sink 150mm is a stamped 1050A aluminium part produced on 63 T tooling with ±0.05 mm repeatability across 300,000 pcs runs. It delivers 0.48 K/W at ΔT = 60 K, holds a 0.3 mm fin profile and ±0.10 mm hole position, and receives hard anodize Type III, 25-40 µm as standard for corrosion protection.
Running at 300,000 pcs, this aluminum heat sink 150mm is pressed on 63 T tooling with ±0.05 mm repeatability. 1050A aluminium gives 0.48 K/W at ΔT = 60 K, and hard anodize Type III, 25-40 µm is applied as standard.
Stamping gives a repeatable 0.3 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 300,000 pcs run.
The one-piece geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. Nothing sits between 1050A aluminium and the airflow except the stamped surface itself.
One supplier now covers 0.3 mm to 0.3 mm fin gauges from the same 63 T press family, so a thermal redesign is a tooling change rather than a new vendor.
Every stroke is dimensionally identical, so ±0.10 mm hole position carries across the batch. That is what makes switch-mode power supply volume programs repeatable.
The hard anodize Type III, 25-40 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 1050A aluminium, supplied with hard anodize Type III, 25-40 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.
Related reading: How Does Airflow Direction Affect Heat Sink Performance in Forced Convection.
General dimensions run to ±0.15 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, 25 °C against a 0.10 mm over 100 mm limit, and fin pitch is verified optically at ±0.05 mm. Reports go out with each lot.
Lot traceability runs from coil to carton: heat number, press stroke range and inspection record stay attached, so a field issue can be tied back to a specific run.
Flatness is measured on granite rather than on cast iron, because 0.10 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.
Final containment is PE bag + honeycomb carton, 15 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.
switch-mode power supply programs are the reason this geometry exists. Where the enclosure cannot grow taller, fin density is the only lever, and 5.0 mm pitch with 0.3 mm stock is the practical ceiling for aluminium.
See also: What Does the Shift to ER Collet Chucks Mean for Spindle Tooling?.
switch-mode power supply packaging and vibration rules push toward one-piece construction. A stamped aluminum heat sink 150mm has no adhesive to creep, which is the usual failure mode in two-part coolers.
Learn more about Custom CNC Collet Chuck Auto Lathe Parts.
In switch-mode power supply, the base usually doubles as the mounting interface. 1.5 mm with 0.10 mm over 100 mm flat gives a stable surface for the switch-mode power supply thermal pad.
Further technical detail: Spring Testing Methods: Load, Fatigue, and Dimensional Inspection Explained.
switch-mode power supply designs often run a 2.0 m/s forced-air path. 0.48 K/W at ΔT = 75 K, forced air 2.0 m/s means switch-mode power supply can hold its target with fan power below the acoustic limit.
| Parameter | Value / Range |
|---|---|
| Material | 1050A aluminium |
| Fin thickness | 0.3 mm |
| Fin pitch | 5.0 mm |
| Fin height | 50 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.10 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Thermal test condition | ΔT = 75 K, forced air 2.0 m/s |
| Surface finish | hard anodize Type III, 25-40 µm |
| Size range | 40 x 40 x 22 mm |
Yes. Standard is hard anodize Type III, 25-40 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 1050A aluminium and the airflow, so we do not coat the fin roots.
Recommended reading: Custom CNC Collet Chuck Auto Lathe 28 Type Round Bore.
We test at ΔT = 75 K, forced air 2.0 m/s 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.
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.
The plant is ISO9001 certified, and parts ship with RoHS and REACH declarations on request. Third-party SGS inspection can be arranged before the container is sealed, which is what most switch-mode power supply buyers specify.
The key is avoiding a second metal at the wet contact area. We recommend hard anodize Type III, 25-40 µm and, where the part touches an aluminium chassis, an isolating washer. Tell us the mating material and we will specify the coating accordingly.
The line sits in Dongguan in a single ISO9001 plant. 63 T presses cover the aluminum heat sink 150mm family, and 300,000 pcs per month is current committed output.
Source-direct from Dongguan: coil stock, forming, surface treatment and inspection happen in one building, so 0.10 mm over 100 mm flatness is verified before the part is packed.
Our switch-mode power supply experience runs back to the first tooling programme in 2015. That history is why the standard hard anodize Type III, 25-40 µm and ±0.15 mm are conservative rather than optimistic.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
Compare it with BQUQ Stamped Metal Hooks Latches Clasps Collection.
| Parameter | Value / Range |
|---|---|
| Material | 1050A aluminium |
| Tolerance | ±0.05 mm repeatability; ±0.10 mm hole position |
| Lead time | Standard for this process: quoted after tooling and volume review |
| MOQ | Standard for this process: volume production, typically 300,000 pcs programs |
| Capacity | 300,000 pcs run on 63 T tooling |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped one-piece heat sink | High-volume switch-mode power supply programs | Requires 63 T tooling; fin geometry fixed by die |
| Extruded heat sink | Lower-volume or simpler fin profiles | Cannot hold 0.3 mm fin profile as repeatably as stamping |
| Two-part cooler with adhesive | Prototype or low-volume builds | Adhesive layer adds thermal resistance to the path |
| Machined heat sink with anodize | Complex features or small batches | Anodize can be cut through at fin roots after machining |
| Stamped heat sink with hard anodize Type III, 25-40 µm | Corrosion protection in volume production | Finish applied after forming; thickness range must be specified |
| Stage | Control | Record |
|---|---|---|
| Stamping | 63 T tooling forms every fin in one stroke; pitch within ±0.05 mm | Dimensional report per stroke/batch |
| Fin profile | 0.3 mm fin profile held across 300,000 pcs run | Profile measurement record |
| Hole position | ±0.10 mm hole position carried across batch | Hole position inspection record |
| Surface finish | Hard anodize Type III, 25-40 µm applied after forming | Coating thickness record |
| Shipment inspection | Inspection before every shipment | Final inspection report |
The 1050A aluminium stamped heat sink delivers 0.48 K/W at ΔT = 60 K. The one-piece geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. The 0.3 mm fin profile is formed in one stroke on 63 T tooling, so pitch stays within ±0.05 mm across a 300,000 pcs run.
Related reading: Extruded vs Skived vs Stamped Heat Sinks: 2024 Cost and Performance Compared.
Stamping on 63 T tooling gives ±0.05 mm repeatability, and ±0.10 mm hole position carries across the batch. The 0.3 mm fin profile is held within ±0.05 mm pitch across a 300,000 pcs run. Every stroke is dimensionally identical, which makes switch-mode power supply volume programs repeatable.
The standard material is 1050A aluminium. Hard anodize Type III, 25-40 µm is applied as standard after forming. Because the finish is applied after forming, corrosion protection does not get cut through at the fin roots the way it does on machined alternatives.
Yes. Running at 300,000 pcs, the part is pressed on 63 T tooling with ±0.05 mm repeatability. The die forms every fin in one stroke, so pitch stays within ±0.05 mm across the run. One supplier covers 0.3 mm to 0.3 mm fin gauges from the same 63 T press family.
Stamping gives a repeatable 0.3 mm fin profile that extrusion cannot hold. The die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 300,000 pcs run. The one-piece geometry also removes the adhesive layer found in two-part coolers, cutting the thermal path.
See also: Large Industrial Heatsink by BQUQ.
It is used in switch-mode power supply volume programs where repeatable thermal performance matters. The 0.48 K/W at ΔT = 60 K and 0.3 mm fin profile suit high-volume builds. One supplier covers 0.3 mm to 0.3 mm fin gauges from the same 63 T press family, so a thermal redesign is a tooling change.
Inspection is performed before every shipment. Key controls include ±0.05 mm repeatability from 63 T tooling, ±0.10 mm hole position across the batch, 0.3 mm fin profile, and hard anodize Type III, 25-40 µm thickness. Records are kept for dimensional and coating checks.
Learn more about Reduce CNC Machining Lead Time for Prototypes: Top Tips.
| Parameter | Value / Range |
|---|---|
| Material | 1050A aluminium |
| Tolerance | ±0.05 mm repeatability; ±0.10 mm hole position |
| Lead time | Standard for this process: 2-4 weeks after tooling approval |
| MOQ | Standard for this process: 300,000 pcs for stamped runs |
| Capacity | 300,000 pcs runs on 63 T tooling |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped 1050A aluminium | High-volume runs requiring 0.3 mm fin profile and ±0.05 mm repeatability | Tooling change needed for redesign; limited to 0.3 mm fin gauges from same press family |
| Extruded aluminium | Lower volume or simpler fin geometries | Cannot hold 0.3 mm fin profile; pitch variation exceeds ±0.05 mm |
| Two-part cooler with adhesive | Prototyping or low-volume custom shapes | Adhesive layer adds thermal resistance; less efficient than one-piece stamped design |
| Hard anodize Type III | Corrosion protection in harsh environments | Adds cost and lead time; standard 25-40 µm thickness |
| Alternative surface finishes | Cost-sensitive or non-corrosive applications | May not provide same corrosion resistance as hard anodize Type III |
It delivers 0.48 K/W at ΔT = 60 K. The one-piece stamped design removes the adhesive layer found in two-part coolers, cutting the thermal path. The 0.3 mm fin profile and ±0.05 mm repeatability ensure consistent airflow and heat dissipation across the entire 300,000 pcs run.
Further technical detail: Shot Peening for Springs: Fatigue Life Gains and Process Specs.
The heat sink is made from 1050A aluminium and receives hard anodize Type III, 25-40 µm as standard for corrosion protection. This finish is applied after stamping on 63 T tooling, ensuring the 0.3 mm fin profile and ±0.10 mm hole position are maintained.
Recommended reading: How Does Miniaturization in Manufacturing Achieve Smaller, Precise, Better Parts?.
You get ±0.05 mm repeatability across the 300,000 pcs run and ±0.10 mm hole position. The 0.3 mm fin profile is held within ±0.05 mm pitch. These tolerances are achieved by the 63 T stamping process, which forms every fin in one stroke.
Compare it with Custom Metal Parts Sourcing Guide: How to Buy CNC Parts from China Safely in 2025.
For stamped runs on 63 T tooling, the standard MOQ is 300,000 pcs. Lead time is typically 2-4 weeks after tooling approval, depending on order volume and surface finish requirements. Hard anodize Type III may add additional processing time.
Yes, but changes require a tooling modification. The current 63 T press family covers 0.3 mm to 0.3 mm fin gauges, so a thermal redesign is a tooling change rather than a new vendor. Hole positions can be adjusted within the ±0.10 mm tolerance.
Every batch undergoes inspection before shipment. We check the 0.3 mm fin profile, ±0.05 mm repeatability, ±0.10 mm hole position, and hard anodize Type III thickness (25-40 µm). Records are kept for each 300,000 pcs run on the 63 T tooling.
It is used in electronics cooling, power supplies, LED lighting, and other thermal management systems. The 150mm size, 0.48 K/W thermal resistance at ΔT = 60 K, and corrosion-resistant hard anodize Type III finish make it suitable for harsh environments and high-volume production.
| Parameter | Specification |
|---|---|
| Material | 1050A aluminium |
| Fin thickness | 0.3 mm |
| Fin pitch | 5.0 mm |
| Fin height | 50 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.10 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Surface finish | hard anodize Type III, 25-40 µm |
| Monthly capacity | 300,000 pcs |
| MOQ (prototype) | 50 pcs |
| Lead time (production) | 10 working days |
| Size range | 40 x 40 x 22 mm |
