aluminum heat sink 300x140x20: 6063-T5 aluminium, tolerance 0.10 mm, surface zinc-nickel plating, trivalent passivation, lead time 15 working days, MOQ 1000 pcs. Capacity 120,000 pcs for telecom and base station. Drawing review and first-article report included.
aluminum heat sink 300x140x20
Key Takeaway
Aluminum heat sink 300x140x20 is a 300 mm × 140 mm × 20 mm extruded profile with 1.0 mm fin thickness, 1.5 mm fin pitch, and 0.35 K/W thermal resistance. General tolerance is ±0.10 mm and standard finish is clear anodize Type II at 5-10 µm. Cost is driven by secondary operations like deburring, plating, and inspection, not raw material. It scales from 50 validation pieces to 50,000 production units.
Related reading: Quality Control in CNC Production: SPC on the Shop Floor.
Key Takeaway
Aluminum heat sink 300x140x20 is specified with 1.0 mm fin thickness, 1.5 mm fin pitch, 0.35 K/W thermal resistance, and ±0.10 mm general tolerance. Whether you need 50 pieces for validation or 50,000 for production, the same physics apply. Clear anodize Type II at 5-10 µm is standard. Cost is driven by secondary operations like deburring, plating, and inspection, not raw material.
Whether you need 50 pieces for validation or 50,000 for a production line, aluminum heat sink 300x140x20 follows the same physics. What changes is which process window we hold, and how much inspection we put behind it.
Key Specifications at a Glance
| Parameter | Value / Range |
|---|---|
| Material | pure copper C110 |
| Fin thickness | 1.0 mm |
| Fin pitch | 1.5 mm |
| Thermal resistance | 0.35 K/W |
| Surface finish | clear anodize Type II, 5-10 µm |
| General tolerance | ±0.10 mm |
Market and Technical Context
Cost pressure in IGBT power module rarely comes from the raw material. It comes from secondary operations: deburring, plating, and 100% inspection. Removing one of those steps usually moves unit cost more than any material substitution.
Tariff and logistics uncertainty has made regional qualification a priority in IGBT power module. Buyers increasingly ask for a second qualified source, which changes how aluminum heat sink 300x140x20 is specified and how tolerances are documented.
How We Manufacture It
The route for aluminum heat sink 300x140x20 starts with a process window, not a machine. We fix material condition and tooling geometry first, then confirm that ±0.10 mm is held at production speed rather than on a single slow part.
In production, aluminum heat sink 300x140x20 runs with in-process checks at fixed intervals. Operators log dimensions every 30 to 50 pieces, which catches tool wear before the batch drifts outside ±0.10 mm.
Deburring and edge conditioning are specified on the drawing for aluminum heat sink 300x140x20. A sharp edge that passes dimensional inspection can still fail assembly, so edge break is a controlled parameter rather than a cosmetic one.
Material and Surface Finish
Where aluminum heat sink 300x140x20 sees contact loading, material hardness is specified alongside dimensional tolerance. Hardness without a defined test method is the most common source of incoming-inspection disputes.
See also: Dc Dc Module Heatsink.
Substitution requests are common when pure copper C110 goes on allocation. We qualify any substitute against the same ±0.10 mm and clear anodize Type II, 5-10 µm criteria before shipping, and provide the certificate with the change.
Learn more about Assessing Supplier Capacity: Booking Slots Early.
Recycled content and RoHS/REACH declarations are available for aluminum heat sink 300x140x20 on request. If your IGBT power module customer audits material origin, ask for the mill certificate at quote stage, not at delivery.
Tolerance and Inspection
Measurement method is part of the specification. A feature measured on a CMM and the same feature measured with a gauge can disagree, so aluminum heat sink 300x140x20 drawings state how each critical dimension is verified.
Process capability is tracked per feature. Where Cpk falls below the agreed threshold on aluminum heat sink 300x140x20, we either adjust the process or reclassify the feature, rather than sorting parts at the end.
Further technical detail: BQUQ Cnc Machined Knurled Knobs Handles Precision Manufacturing China.
Non-conforming material is quarantined physically, not just in the system. For aluminum heat sink 300x140x20, that means the batch stays in a marked area until disposition is documented, which prevents the most common shipping error.
Recommended reading: How to Choose the Right Thermal Interface Material for Your Heat Sink.
Where It Is Used
IGBT power module is the largest application area for aluminum heat sink 300x140x20, where the part typically sees continuous load and a wide temperature range rather than laboratory conditions.
Compare it with Stainless steel extension spring wholesale.
In assembly, aluminum heat sink 300x140x20 is usually constrained by the mating part rather than by its own specification. Sharing the interface drawing early prevents the common failure where both parts are in tolerance but will not assemble.
What to Confirm Before Ordering
Ask for the first-article report before you ask for a price cut on aluminum heat sink 300x140x20. A supplier who cannot produce dimensional data at 500 pcs will not produce it at 800,000 pcs.
Compare quotes on the same basis: material grade, clear anodize Type II, 5-10 µm, inspection scope, and packaging. A lower unit price that drops 100% inspection is not a lower total cost.
FAQ: Your Questions Before Ordering
What is the minimum order quantity for aluminum heat sink 300x140x20?
General dimensions are held to ±0.10 mm. Critical features are identified on the drawing and held to a tighter band, with the measurement method stated so incoming inspection matches ours.
How long does production take for aluminum heat sink 300x140x20?
Yes. Send the drawing in any common format. We review it for manufacturability first and flag any feature where ±0.10 mm would require an extra operation, so you can decide before tooling.
Do you provide material and inspection certificates?
Yes. Material certificates, heat-lot traceability, and first-article inspection reports ship with the order. If your IGBT power module customer requires additional documentation, specify it at quote stage.
What surface finishes are available for aluminum heat sink 300x140x20?
clear anodize Type II, 5-10 µm is standard for aluminum heat sink 300x140x20. Other finishes are quoted with a defined thickness range and verified on a coupon from the same batch rather than assumed from process settings.
Can you prototype before tooling?
Yes, and we recommend it. Prototyping aluminum heat sink 300x140x20 without tooling validates fit and function at a fraction of tooling cost, and usually surfaces a design change before steel is cut.
If aluminum heat sink 300x140x20 is already in production elsewhere, send a sample and the current drawing. We will quote against it and tell you honestly whether switching improves cost, lead time, or neither.
Related reading: Thermal Management for High Brightness LEDs with Heat Sinks.
See also: heat sink for m.2 ssd.
Learn more about How Much Does a Stamping Die Cost? Full Tooling Price Breakdown.
Key Specifications and Selection Guide
Spec comparison
| Parameter | Value / Range |
|---|---|
| Material | Aluminum (clear anodize Type II) |
| Tolerance | ±0.10 mm |
| Lead time | Standard for production volume |
| MOQ | 50 pieces (validation) to 50,000 (production) |
| Capacity | 50 to 50,000 pieces per order |
Selection / comparison
| Option | Best for | Trade-off |
|---|---|---|
| Standard clear anodize Type II | IGBT power module cooling | 5-10 µm coating, limited corrosion resistance |
| Uncoated aluminum | Cost-sensitive validation | No surface protection, higher inspection burden |
| Tighter tolerance than ±0.10 mm | Critical mating interfaces | Higher cost, slower production speed |
| Reduced inspection (skip 100%) | Low-risk prototypes | Higher risk of escape defects |
| Second qualified source | Tariff and logistics uncertainty | Additional qualification time and cost |
Process / inspection
| Stage | Control | Record |
|---|---|---|
| Material condition | Fix material condition before machining | Material certificate |
| Tooling geometry | Fix tooling geometry first | Tooling setup sheet |
| Production speed | Confirm ±0.10 mm at production speed | First article inspection report |
| Deburring | Secondary operation control | Deburring log |
| Final inspection | 100% inspection when required | Inspection report |
Frequently Asked Questions
What is the thermal resistance of aluminum heat sink 300x140x20?
The thermal resistance is 0.35 K/W. This value is specified with 1.0 mm fin thickness and 1.5 mm fin pitch. It applies whether you order 50 pieces or 50,000 pieces, because the same physics govern heat transfer.
What material and surface finish are standard for this heat sink?
The standard material is aluminum with clear anodize Type II at 5-10 µm. This finish provides mild corrosion protection and is suitable for IGBT power module applications. General tolerance is ±0.10 mm.
Further technical detail: Collet Standards Chart: 5C, 16C, 2J, ER, R8 and TG.
What is the minimum order quantity for aluminum heat sink 300x140x20?
MOQ starts at 50 pieces for validation. Production orders can go up to 50,000 pieces. The same process window is used, but inspection intensity and secondary operations may change with volume.
How is the ±0.10 mm tolerance held at production speed?
We fix material condition and tooling geometry first, then confirm that ±0.10 mm is held at production speed rather than on a single slow part. This ensures consistency across 50 to 50,000 pieces.
What drives the cost of aluminum heat sink 300x140x20?
Cost pressure rarely comes from raw material. It comes from secondary operations: deburring, plating, and 100% inspection. Removing one of those steps usually moves unit cost more than any material substitution.
Why do buyers ask for a second qualified source for this heat sink?
Tariff and logistics uncertainty has made regional qualification a priority in IGBT power module. Buyers increasingly ask for a second qualified source, which changes how the heat sink is specified and how tolerances are documented.
What should I confirm before ordering aluminum heat sink 300x140x20?
Confirm material condition, fin thickness (1.0 mm), fin pitch (1.5 mm), thermal resistance (0.35 K/W), surface finish (clear anodize Type II, 5-10 µm), general tolerance (±0.10 mm), order quantity (50 to 50,000), and inspection requirements.
Key Specifications and Selection Guide
Spec comparison
| Parameter | Value / Range |
|---|---|
| Material | Aluminum alloy (6000 series standard for extrusion) |
| Tolerance | ±0.10 mm general |
| Lead time | Standard production schedule after drawing approval; expedite available |
| MOQ | 50 pieces for validation; 50,000 for production |
| Capacity | 50 to 50,000+ pieces per order |
Selection / comparison
| Option | Best for | Trade-off |
|---|---|---|
| Clear anodize Type II 5-10 µm | Standard corrosion resistance and cosmetic finish | Lower emissivity than black anodize |
| Black anodize | Improved thermal radiation and aesthetics | Higher cost than clear anodize |
| As-machined / deburred only | Cost-sensitive, non-visible applications | No corrosion protection; handling marks possible |
| Tighter tolerance than ±0.10 mm | Critical mounting interfaces | Increased inspection and machining cost |
| 100% inspection | High-reliability IGBT power modules | Adds unit cost versus AQL sampling |
Frequently Asked Questions
What is the thermal resistance of aluminum heat sink 300x140x20?
The specified thermal resistance is 0.35 K/W under standard natural convection conditions. This value depends on fin thickness 1.0 mm, fin pitch 1.5 mm, and base thickness 20 mm. For forced air or different mounting, actual performance may vary. Request a thermal simulation for your exact boundary conditions.
What is the standard surface finish for this heat sink?
Clear anodize Type II at 5-10 µm is standard. It provides corrosion resistance and a clean appearance. Black anodize or chromate conversion are available on request. Finish affects thermal radiation and cost, so confirm before ordering.
Recommended reading: Custom CNC Machined Bicycle Parts Aluminum.
What is the general tolerance for aluminum heat sink 300x140x20?
General tolerance is ±0.10 mm. This covers profile dimensions, fin thickness, and fin pitch. Tighter tolerances are possible but increase inspection and machining cost. Specify critical dimensions on your drawing for review.
What is the minimum order quantity for this heat sink?
We support 50 pieces for validation and 50,000 pieces for production. The same physics apply, but process windows and inspection levels change with volume. MOQ depends on finish and tolerance requirements. Contact us for a quote.
Compare it with Custom Copper Helical Antenna Springs.
How is cost driven for aluminum heat sink 300x140x20?
Cost is driven by secondary operations like deburring, plating, and inspection, not raw material. Removing one step usually moves unit cost more than material substitution. For IGBT power modules, 100% inspection is common and adds cost. Optimize by specifying only necessary operations.
What should I confirm before ordering this heat sink?
Confirm fin thickness 1.0 mm, fin pitch 1.5 mm, thermal resistance 0.35 K/W, tolerance ±0.10 mm, and finish clear anodize Type II 5-10 µm. Also confirm quantity, inspection level, and packaging. Provide a drawing with critical dimensions. This avoids delays and rework.
Is aluminum heat sink 300x140x20 suitable for IGBT power modules?
Yes, it is commonly used in IGBT power modules. The 0.35 K/W thermal resistance and 1.5 mm fin pitch suit natural convection. Cost pressure comes from secondary operations, not raw material. Regional qualification is a priority due to tariff and logistics uncertainty. Confirm your thermal and mechanical requirements.
