heat sink compound thermal paste: 6063-T5 aluminium, 0.8 mm fins at 3.0 mm pitch, 0.15 mm over 100 mm flatness, 0.35 K/W thermal resistance. MOQ 200 pcs, shi...
heat sink compound thermal paste: 6063-T5 aluminium, 0.8 mm fins at 3.0 mm pitch, 0.15 mm over 100 mm flatness, 0.35 K/W thermal resistance. MOQ 200 pcs, shi...
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The heat sink compound thermal paste is a stamped 6063-T5 aluminium part with 3.0 mm fin pitch, 0.8 mm stock, and a 40 x 40 x 22 mm envelope. It holds 0.15 mm flatness over 100 mm on the mounting face and achieves 0.35 K/W thermal resistance. Fin pitch stays within ±0.03 mm across a 50,000 pcs run, verified at CMM 0.001 mm resolution.
The heat sink compound thermal paste is a stamped 6063-T5 aluminium part with 3.0 mm fin pitch, 0.8 mm stock, and 40 x 40 x 22 mm envelope, holding 0.15 mm flatness over 100 mm on the mounting face. Thermal resistance is 0.35 K/W, verified at CMM 0.001 mm resolution, with fin pitch held within ±0.03 mm across a 50,000 pcs run.
The heat sink compound thermal paste combines 3.0 mm fin pitch with 0.8 mm stock in 6063-T5 aluminium, so 40 x 40 x 22 mm parts keep 0.15 mm over 100 mm on the mounting face. Thermal resistance is 0.35 K/W, measured at CMM 0.001 mm resolution per lot.
Related reading: Fine Blanking vs Conventional Stamping: Smooth Edges and What They Cost.
Stamping gives a repeatable 0.8 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.03 mm across a 50,000 pcs run.
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 0.8 mm to 0.8 mm fin gauges from the same 110 T press family, so a thermal redesign is a tooling change rather than a new vendor.
Pressing 6063-T5 aluminium keeps the heat sink compound thermal paste light, from 650 g depending on envelope, without sacrificing fin density, which matters where airflow path length is already fixed by the enclosure.
Every stroke is dimensionally identical, so ±0.15 mm hole position carries across the batch. That is what makes EV and OBC charger volume programs repeatable.
The standard material is 6063-T5 aluminium, supplied with clear anodize Type II, 5-10 µm. 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.
See also: Black Anodized Aluminum Heatsink Collection.
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.
Flatness is checked on a granite surface plate, 25 °C against a 0.15 mm over 100 mm limit, and fin pitch is verified optically at ±0.03 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 ±0.15 mm trigger a full-lot sort.
Learn more about Vapor Chamber vs Heat Pipe vs Solid Heat Sink: Key Differences for Engineers.
Flatness is measured on granite rather than on cast iron, because 0.15 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 + 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.
EV and OBC charger programs are the reason this geometry exists. Where the enclosure cannot grow taller, fin density is the only lever, and 3.0 mm pitch with 0.8 mm stock is the practical ceiling for aluminium.
EV and OBC charger customers typically specify 6063-T5 aluminium for corrosion reasons and then hold the drawing to ±0.15 mm. The 50,000 pcs line absorbs the volume without a second source.
Where a heat sink compound thermal paste runs at EV and OBC charger 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 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 | 6063-T5 aluminium |
| Fin thickness | 0.8 mm |
| Fin pitch | 3.0 mm |
| Fin height | 50 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.15 mm over 100 mm |
| Thermal resistance | 0.35 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | clear anodize Type II, 5-10 µm |
| Size range | 40 x 40 x 22 mm |
6063-T5 aluminium is the standard choice. For EV and OBC charger in a corrosive environment we specify 6063-T5 with clear anodize Type II, 5-10 µm; 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.
We test at ΔT = 60 K, natural convection and report 0.35 K/W. That is a steady-state figure, not a transient: for EV and OBC charger first-power-on behaviour you need a different test, and we can run it on request.
On 6063-T5 aluminium at normal press tonnage, expect a tooling life of roughly . At 50,000 pcs that is 6 to 12 months. We keep spare die sets on site for EV and OBC charger programs, which removes the wait if wear shows up in the flatness record.
Yes, we ship as-pressed for customers who do their own finishing. The risk is handling marks on 0.8 mm fins, so we pack those parts with interleaving sheets inside PE bag + export carton, 20 kg per carton.
Further technical detail: 5 Proven Ways to Reduce Cost in Metal Stamping Parts.
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 EV and OBC charger buyers specify.
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Source-direct from Dongguan: coil stock, forming, surface treatment and inspection happen in one building, so 0.15 mm over 100 mm flatness is verified before the part is packed.
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The factory holds ISO9001 and can ship RoHS and REACH documentation with the PE bag + export carton, 20 kg per carton. Third-party SGS inspection is arranged on request before the container is sealed.
Related reading: How Does Metal Stamping Produce Appliance Enclosures, Brackets and Structural Parts?.
Production runs on 12 s cycles with in-line vision on 0.15 mm over 100 mm. That is what keeps a 50,000 pcs commitment credible in peak season.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
See also: Choosing a TIM: Grease, Pad, Gap Filler and Phase Change.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | ±0.03 mm fin pitch; ±0.15 mm hole position; 0.15 mm over 100 mm mounting face |
| Lead time | Standard for this process: 2–4 weeks after tooling approval |
| MOQ | Standard for this process: 5,000 pcs |
| Capacity | 50,000 pcs run; 110 T press family |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped 0.8 mm fin profile | Repeatable 3.0 mm fin pitch in high-volume EV and OBC charger programs | Tooling change required for thermal redesign |
| Extruded fin profile | Lower tooling cost for simple profiles | Cannot hold 0.8 mm fin profile or ±0.03 mm pitch repeatably |
| 6063-T5 aluminium | Lightweight heat sink compound thermal paste from 650 g | Lower thermal conductivity than copper |
| CMM 0.001 mm inspection | Catching die wear as a measurable fin pitch shift | Adds per-lot inspection time |
| 110 T press family | 0.8 mm to 0.8 mm fin gauges from one supplier | Limited to press envelope and tonnage |
| Stage | Control | Record |
|---|---|---|
| Stamping | Die forms every fin in one stroke; pitch within ±0.03 mm | Stroke dimensional record per lot |
| Fin profile | 0.8 mm fin profile held by die | Profile measurement per lot |
| Mounting face | 0.15 mm over 100 mm flatness | CMM 0.001 mm resolution report |
| Hole position | ±0.15 mm across batch | CMM 0.001 mm resolution report |
| Thermal performance | 0.35 K/W thermal resistance | Measured at CMM 0.001 mm resolution per lot |
| Final shipment | Inspection before every shipment | Lot inspection record |
The heat sink compound thermal paste measures 0.35 K/W thermal resistance. This is verified at CMM 0.001 mm resolution per lot, so the 40 x 40 x 22 mm part with 3.0 mm fin pitch and 0.8 mm stock delivers consistent thermal performance across a 50,000 pcs run.
It uses 6063-T5 aluminium with a 3.0 mm fin pitch and 0.8 mm stock. The stamped construction holds pitch within ±0.03 mm across a 50,000 pcs run, which extrusion cannot match for this 0.8 mm fin profile.
The mounting face holds 0.15 mm over 100 mm. This flatness is maintained on 40 x 40 x 22 mm parts and checked at CMM 0.001 mm resolution per lot, supporting repeatable contact in EV and OBC charger volume programs.
Yes. Stamping gives a repeatable 0.8 mm fin profile that extrusion cannot hold. The die forms every fin in one stroke, so 3.0 mm pitch stays within ±0.03 mm across a 50,000 pcs run, and die wear shows up as a measurable pitch shift caught at CMM 0.001 mm resolution.
Pressing 6063-T5 aluminium keeps the heat sink compound thermal paste light, from 650 g depending on envelope, without sacrificing fin density. This matters where airflow path length is already fixed by the enclosure in 40 x 40 x 22 mm designs.
Every stroke is dimensionally identical, so ±0.15 mm hole position carries across the batch. This repeatability is what makes EV and OBC charger volume programs reliable, with inspection before every shipment at CMM 0.001 mm resolution.
Learn more about High Heat Dissipation Metal Heat Sink Customization with Zero Gap.
One supplier now covers 0.8 mm to 0.8 mm fin gauges from the same 110 T press family. That means a thermal redesign is a tooling change rather than a new vendor, supporting 3.0 mm fin pitch and 0.35 K/W thermal resistance in 50,000 pcs runs.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | Fin pitch ±0.03 mm; flatness 0.15 mm over 100 mm |
| Lead time | Standard for this process: 2–4 weeks after tooling approval |
| MOQ | Standard for this process: 5,000 pcs |
| Capacity | 50,000 pcs run demonstrated |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped 0.8 mm fin | Repeatable fin pitch within ±0.03 mm over 50,000 pcs | Tooling change required for fin gauge changes |
| Extruded fin | Lower tooling cost for simple profiles | Cannot hold 0.8 mm fin profile; pitch varies more |
| 6063-T5 aluminium | Thermal resistance 0.35 K/W with 3.0 mm pitch | Material-specific thermal performance |
| CMM 0.001 mm inspection | Verifying flatness 0.15 mm and pitch ±0.03 mm | Adds inspection time per lot |
The fin pitch is held within ±0.03 mm across a 50,000 pcs run. This is verified at CMM 0.001 mm resolution per lot, ensuring repeatable 3.0 mm fin pitch for consistent thermal performance.
Further technical detail: Die-Cast Heat Sinks: Design Limits and Finishing.
Thermal resistance is 0.35 K/W. This is achieved with 6063-T5 aluminium, 0.8 mm stock, and 3.0 mm fin pitch in a 40 x 40 x 22 mm envelope, measured at CMM 0.001 mm resolution.
We hold 0.15 mm flatness over 100 mm on the mounting face. This is inspected at CMM 0.001 mm resolution, ensuring proper contact for thermal paste application.
Stamping gives a repeatable 0.8 mm fin profile that extrusion cannot hold. The die forms every fin in one stroke, so pitch stays within ±0.03 mm across a 50,000 pcs run, and die wear shows up as a measurable shift caught at CMM 0.001 mm resolution.
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Standard lead time is 2–4 weeks after tooling approval, with an MOQ of 5,000 pcs. Capacity is demonstrated at 50,000 pcs runs, and one supplier covers 0.8 mm fin gauges from the same 110 T press family.
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The part is made from 6063-T5 aluminium with 0.8 mm stock. This material and thickness support the 3.0 mm fin pitch and 0.35 K/W thermal resistance in the 40 x 40 x 22 mm envelope.
Inspection before every shipment includes CMM verification at 0.001 mm resolution for fin pitch ±0.03 mm and flatness 0.15 mm over 100 mm. Thermal resistance is verified per lot at 0.35 K/W.
| Parameter | Specification |
|---|---|
| Material | 6063-T5 aluminium |
| Fin thickness | 0.8 mm |
| Fin pitch | 3.0 mm |
| Fin height | 50 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.15 mm over 100 mm |
| Thermal resistance | 0.35 K/W |
| Surface finish | clear anodize Type II, 5-10 µm |
| Monthly capacity | 50,000 pcs |
| MOQ (prototype) | 200 pcs |
| Lead time (production) | 12 working days |
| Size range | 40 x 40 x 22 mm |
