VFD Inverter Stamped Fin Heat Sink: ADC12 die-cast aluminium, 1.0 mm fins at 5.0 mm pitch, 0.15 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 50 ...
VFD Inverter Stamped Fin Heat Sink: ADC12 die-cast aluminium, 1.0 mm fins at 5.0 mm pitch, 0.15 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 50 ...
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The VFD Inverter Stamped Fin Heat Sink is a one-piece ADC12 die-cast aluminium cooler pressed on 110 T tooling with ±0.03 mm repeatability, delivering 0.48 K/W at ΔT = 60 K. Hard anodize Type III at 25-40 µm is standard, flatness is 0.15 mm over 100 mm, and weight starts at 280 g depending on envelope. Running at 800,000 pcs, it suits high-volume VFD inverter cooling.
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The VFD Inverter Stamped Fin Heat Sink is a one-piece ADC12 die-cast aluminium cooler pressed on 110 T tooling with ±0.03 mm repeatability, delivering 0.48 K/W at ΔT = 60 K. Hard anodize Type III at 25-40 µm is standard, flatness is 0.15 mm over 100 mm, and weight starts at 280 g depending on envelope.
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Running at 800,000 pcs, this VFD Inverter Stamped Fin Heat Sink is pressed on 110 T tooling with ±0.03 mm repeatability. ADC12 die-cast aluminium gives 0.48 K/W at ΔT = 60 K, and hard anodize Type III, 25-40 µm is applied as standard.
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Because the base and fins are pressed as one piece, there is no brazed joint to fail. 0.15 mm over 100 mm flatness on the mounting face is held directly from the tool, which keeps thermal interface contact uniform.
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.
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 plus granite flatness plate rather than in the field.
Pressing ADC12 die-cast aluminium keeps the VFD Inverter Stamped Fin Heat Sink light, from 280 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 VFD and inverter volume programs repeatable.
The standard material is ADC12 die-cast aluminium, supplied with hard anodize Type III, 25-40 µm. For applications where VFD and inverter 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 CMM plus granite flatness plate. 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, CMM plus granite flatness plate confirms 0.15 mm over 100 mm and 5.0 mm against the drawing.
Flatness is measured on granite rather than on cast iron, because 0.15 mm over 100 mm at 80 x 60 x 35 mm reads differently on a plate that has not been lapped. Records keep both readings.
We inspect 1.0 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.
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For VFD and inverter builds, the 0.15 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.
VFD and inverter customers typically specify ADC12 die-cast aluminium for corrosion reasons and then hold the drawing to ±0.15 mm. The 800,000 pcs line absorbs the volume without a second source.
VFD and inverter packaging and vibration rules push toward one-piece construction. A stamped VFD Inverter Stamped Fin Heat Sink has no adhesive to creep, which is the usual failure mode in two-part coolers.
In VFD and inverter, the base usually doubles as the mounting interface. 1.5 mm with 0.15 mm over 100 mm flat gives a stable surface for the VFD and inverter thermal pad.
| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Fin thickness | 1.0 mm |
| Fin pitch | 5.0 mm |
| Fin height | 30 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.15 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | hard anodize Type III, 25-40 µm |
| Size range | 80 x 60 x 35 mm |
Yes. Send a drawing or a sample and we return a DFM note within 3 working days. Most VFD and inverter customisations change 5.0 mm, 1.5 mm or the hole pattern, and all three are tooling changes on the existing 110 T press rather than a new machine.
The family covers 80 x 60 x 35 mm, with unit weights from 280 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.
We supply a 2D drawing with the CMM report, and 3D STEP on request. Both show flatness callouts and tooling split lines, which matters if you are checking 0.15 mm over 100 mm in your own assembly.
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.
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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 800,000 pcs. For VFD and inverter in a fixed-height enclosure, stamped is normally the right answer.
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The line sits in Dongguan in a single ISO9001 plant. 110 T presses cover the VFD Inverter Stamped Fin Heat Sink family, and 800,000 pcs per month is current committed output.
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The factory holds ISO9001 and can ship RoHS and REACH documentation with the PE bag + honeycomb carton, 15 kg per carton. Third-party SGS inspection is arranged on request before the container is sealed.
We quote EXW and hold 50 pcs for sampling. Sampling is free sample with drawing, 5-7 days, so a first evaluation does not require a production commitment.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Tolerance | ±0.03 mm repeatability; ±0.15 mm hole position |
| Lead time | Standard for this process: 15-25 days after tooling approval |
| MOQ | Standard for this process: 5,000 pcs |
| Capacity | 800,000 pcs running |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped fin one-piece | High-volume VFD inverter cooling with fixed airflow path | Tooling required; fin pitch set by die |
| Extruded heat sink | Low-volume or simple profiles | Less tolerant to batch variation; die wear shifts fin pitch |
| Two-part bonded cooler | Prototypes or mixed materials | Adhesive layer adds thermal resistance and joint can fail |
| Die-cast with brazed fins | Complex geometries | Brazed joint is a potential failure point |
| Stamped fin with hard anodize Type III | Wear and corrosion resistance | Adds 25-40 µm coating; masking may be needed |
| Stage | Control | Record |
|---|---|---|
| Pressing | 110 T tooling, ±0.03 mm repeatability | Stroke dimensional data |
| Fin pitch | Die wear monitoring | CMM measurement |
| Flatness | 0.15 mm over 100 mm on mounting face | Granite flatness plate |
| Hole position | ±0.15 mm | CMM report |
| Surface finish | Hard anodize Type III, 25-40 µm | Coating thickness certificate |
| Final inspection | Before every shipment | Inspection report |
It delivers 0.48 K/W at ΔT = 60 K with ADC12 die-cast aluminium. The one-piece stamped construction removes the adhesive layer found in two-part coolers, cutting the thermal path. Hard anodize Type III at 25-40 µm is standard.
We hold ±0.03 mm repeatability from 110 T tooling, ±0.15 mm hole position, and 0.15 mm over 100 mm flatness on the mounting face. These are verified by CMM and granite flatness plate before every shipment.
The heat sink is pressed from ADC12 die-cast aluminium. Hard anodize Type III, 25-40 µm, is applied as standard. This combination gives 0.48 K/W at ΔT = 60 K and resists wear and corrosion.
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Weight starts from 280 g depending on envelope. The one-piece stamped design keeps it light without sacrificing fin density, which matters where airflow path length is already fixed by the enclosure.
We are running at 800,000 pcs. Standard lead time for this process is 15-25 days after tooling approval, with MOQ of 5,000 pcs. Every stroke is dimensionally identical for consistent batch output.
Inspection includes CMM for fin pitch and hole position, granite flatness plate for 0.15 mm over 100 mm flatness, and coating thickness checks for hard anodize Type III at 25-40 µm. Records are kept for every shipment.
Stamped construction tolerates batch variation better than extrusion because die wear shows as a measurable fin pitch shift caught by inspection. The one-piece base and fins eliminate brazed joints and adhesive layers, improving thermal path reliability.
| Parameter | Value / Range |
|---|---|
| Material | ADC12 die-cast aluminium |
| Tolerance | ±0.03 mm repeatability |
| Lead time | Standard for this process: 4-6 weeks after tooling approval |
| MOQ | Standard for this process: 1,000 pcs |
| Capacity | 800,000 pcs |
| Option | Best for | Trade-off |
|---|---|---|
| One-piece stamped fin | High-volume VFD inverter cooling | Tooling cost, limited design changes |
| Two-part bonded cooler | Low-volume or prototype builds | Adhesive layer adds thermal resistance |
| Extruded heat sink | Simple profiles, low tooling cost | Less batch variation tolerance, fin pitch limits |
| Skived fin heat sink | High fin density, thin fins | Higher cost, less robust for stamping |
| Die-cast with separate fins | Complex geometries | Brazed joint can fail, extra process step |
It delivers 0.48 K/W at ΔT = 60 K. The one-piece ADC12 die-cast aluminium construction removes the adhesive layer found in two-part coolers, cutting the thermal path. Flatness of 0.15 mm over 100 mm ensures uniform thermal interface contact.
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ADC12 die-cast aluminium is used, with hard anodize Type III at 25-40 µm as standard. This finish provides wear and corrosion resistance. The one-piece stamped construction eliminates brazed joints, improving reliability.
The process holds ±0.03 mm repeatability on 110 T tooling. Flatness is 0.15 mm over 100 mm on the mounting face. Die wear shows up as a measurable shift in fin pitch, caught by CMM and granite flatness plate inspection.
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Weight starts at 280 g depending on envelope. The one-piece ADC12 die-cast aluminium design keeps mass low while maintaining thermal performance of 0.48 K/W at ΔT = 60 K.
Capacity is 800,000 pcs. Standard lead time for this process is 4-6 weeks after tooling approval. MOQ is 1,000 pcs. Running at 800,000 pcs ensures stable die wear and consistent fin pitch.
Every shipment undergoes inspection including CMM dimensional checks, granite flatness plate for 0.15 mm over 100 mm, and coating thickness verification for hard anodize Type III, 25-40 µm. Records are kept for traceability.
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It is used in VFD inverters and other power electronics requiring high-volume cooling. The stamped fin design tolerates batch variation better than extrusion, making it suitable for 800,000 pcs production runs.
| Parameter | Specification |
|---|---|
| Material | ADC12 die-cast aluminium |
| Fin thickness | 1.0 mm |
| Fin pitch | 5.0 mm |
| Fin height | 30 mm |
| Base thickness | 1.5 mm |
| Base flatness | 0.15 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Surface finish | hard anodize Type III, 25-40 µm |
| Monthly capacity | 800,000 pcs |
| MOQ (prototype) | 50 pcs |
| Lead time (production) | 10 working days |
| Size range | 80 x 60 x 35 mm |
