CNC-Machined Dense Fin Aluminum Extrusion Heat Sink 200×85
Industrial-grade electronic heat sink built for solid-state relays, power modules, and high-density power electronics. Extruded for thermal efficiency, CNC machined for precision fit.
- Product Introduction
CNC-Machined Dense Fin Heat Sink for Industrial Electronics
A precision aluminum extrusion heat sink engineered for solid-state relays, power modules, and high-density industrial electronics.
Whether you are a procurement buyer sourcing an aluminum heat sink manufacturer, an engineering contractor integrating a power module, a technical engineer sizing thermal performance, or a designer fitting a cooler into a compact enclosure - this 200×85 mm CNC machined heat sink is built to make your choice lower-risk and your assembly faster.
The product is manufactured from high-grade Aluminum 6063-T5 using an extrusion process that forms a thick, flat base and a dense array of parallel fins. The extrusion is then CNC machined to length, drilled, and tapped for mounting holes, delivering the flatness, hole spacing, and edge tolerances that power-device assemblies demand. The dense fin geometry maximizes surface area in a compact footprint, making it an ideal solid-state relay heat sink, IGBT heat sink, and general-purpose electronic heat sink for power electronics cooling.
Materials & Construction
Aluminum 6063-T5 offers an excellent balance of thermal conductivity, extrudability, and machining stability. The base is left thick enough to spread heat from a concentrated heat source into the fin array, while the CNC finish on the mounting surface ensures good thermal contact with SSRs, thyristors, and diode modules.
Key Benefits of This Industrial Aluminum Heat Sink
Why engineers specify this extruded aluminum heat sink for power-electronics assemblies.
CNC Machined Precisio
Tight tolerances on base flatness, hole spacing, and edge finish for direct device mounting.
High Surface Density
Dense parallel fins deliver a large surface area in a compact 200×85 mm footprint.
Universal Power Electronics Fit
Mounting patterns suit SSRs, SCRs, IGBT modules, rectifiers, and power supplies.
Custom Lengths & Holes
We can cut to any length and add threaded or clearance holes to your drawing.
Export-Ready Quality
ISO 9001 production with RoHS/REACH compliant materials and full documentation.
Fast Prototyping
Samples in 7–10 days, so you can validate thermal fit before committing to volume.
Technical Specifications
| Parameter | Value |
| Material | Aluminum 6063-T5 |
| Base Dimensions (L x W) | 200 × 85 mm |
| Overall Height (approx.) | 60–70 mm (confirm on order) |
| Fin Type | Dense parallel fins |
| Fin Pitch | 1.5–2.5 mm (typical) |
| Surface Finish | Natural aluminum / optional anodized black or clear |
| Manufacturing Process | Aluminum extrusion + CNC machining |
| Mounting Options | M3 / M4 threaded holes, clearance holes, or custom pattern |
| Operating Temperature | −40 °C to +150 °C |
| Certifications | RoHS, REACH compliant; ISO 9001 |
How to Select the Right Electronic Heat Sink
A quick reference for procurement and engineering teams to shortlist the correct configuration.
| Your component/application | Recommended configuration |
| Solid-state relay (SSR), 10–40 A | Standard 200×85 dense fin, M4 tapped holes |
| Thyristor / SCR / rectifier module | Anodized finish, drilled mounting to device footprint |
| IGBT / power module, higher wattage | Longer extrusion or copper insert base, forced-air option |
| Compact enclosure / tight space | Custom cut length and side-mounting holes |
| Harsh / outdoor environment |
Anodized black + corrosion-resistant coating |
Not sure which configuration fits your device? Send us the device model, mounting hole pattern, and worst-case power dissipation - we will recommend the right CNC heat sink and provide a free fit review.
Applications for Power Module Heat Sinks
Proven across industrial and commercial electronics where reliable power electronics cooling is critical.
Solid-State Relays (SSR)
Dissipates switching losses so SSRs stay within safe operating temperature.
IGBT & Thyristor Modules
Thick base spreads heat from concentrated power-module footprints.
Power Supplies & Rectifiers
Keeps diodes, MOSFETs, and transformer-adjacent components cool.
Motor Drives & Inverters
Reliable cooling for variable-frequency drives and servo controllers.
LED Drivers & Ballasts
Passive, silent cooling that extends driver life in enclosed fixtures.
Automotive & EV Power
CNC-machined mounting holes match OEM power-device footprints.
Engineering Support & Customization
We don't just cut extrusions - we help you deliver a thermal solution that fits your device and assembly line.
Free Fit Review
Send your device footprint and we recommend the right base size, fin density, and mounting hole pattern.
CNC Machining to Drawing
Custom length, tapped holes, clearance holes, slots, and surface finishing to your spec.
Rapid Prototyping
First samples in 7–10 days so you can validate fit, finish, and thermal performance before volume.
Full Documentation
2D drawing, 3D STEP model, material certificate, and RoHS/REACH test reports supplied on request.
Flexible MOQ & Lead Time
Low minimums for prototypes, competitive volume pricing, and reliable export logistics.
Global Export Experience
Shipped to 40+ countries with clear HS codes and customs-friendly documentation.
Customer Reviews & Testimonials
Mark T
Industrial Automation Engineer
Sandra W
Procurement Manager, Power Electronics OEM
Liang Z
Product Engineer, Motor Drive Manufacturer
Frequently Asked Questions
Q: What is a CNC machined aluminum extrusion heat sink?
A: It is an aluminum extrusion heat sink that is cut and finished to precise dimensions by CNC machining. Extrusion forms the base and fins; CNC ensures the mounting holes, length, and flatness meet your device requirements.
Q: Can you make this heat sink in a different length or with different holes?
A: Yes. We regularly produce custom lengths, hole patterns, and finishes. Send your drawing or device footprint and we will return a quote and 3D model.
Q: What is the minimum order quantity (MOQ) and lead time?
A: Prototyping starts from low MOQs with samples in 7–10 days. Production orders typically run 2–4 weeks depending on finish and hole complexity; expedited schedules are available for engineering contractors on a deadline.
Q: What surface finish and certifications do you offer?
A: Standard finish is natural aluminum. Optional anodized black or clear is available. Materials are RoHS / REACH compliant and production is ISO 9001 certified. Material certificates and test reports are supplied on request.
Q: What documentation comes with an order?
A: Every shipment includes a 2D drawing, 3D STEP model, material certificate, and inspection report. RoHS / REACH certificates are available for compliance-heavy projects.
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