Metal core PCBs - Multi Circuit Boards

Metal core circuit boards

Metal core or IMS (Insulated Metallic Substrate) circuit boards are an excellent alternative to standard circuit boards, if the circuit boards are exposed to large mechanical loads, or a high level of dimensional stability is required, or high temperatures must be conducted away from power components or LED's.

The thermal conductivity assisted by the aluminium cores in the circuit boards makes higher packing densities, longer operating times, and improved security against failure possible, such as for LED technology and for high power transistors.

Additional application areas for this technology include: high current application, power LED's, SMD and power circuit boards. The high thermal conductivity permits a quick and effective transfer of the heat produced.

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Available types

You can order single sided and double sided pth aluminium core circuit boards from Multi CB (see: layer buildup). Depending on the design, thermal conductivity ranges from 0.67 to 2.2 W/m*K! (The value for FR4 is approx. 0.3 W/m*K.)

Technical options for metal core circuit boards

1 layer		Notes
Material	Aluminium core, FR4 covering	Data sheet 1 layer
Max. size	230mm x 380mm
Aluminium thickness	1.5mm, 2.0mm
Initial copper	35µm (for 1.5mm), 140µm (for 2.0mm)
Surface	Lead-free HAL, immersion gold, immersion tin
RoHS compliant	yes

2 layers plated through		Notes
Material	Aluminium core, FR4 covering	Data sheet 2 layers
Max. size	600mm x 600mm
Aluminium thickness	1.2mm, 1.5mm, 1.6mm	In stock
	0.8mm, 1.0mm, 2.0mm	On request
Basis copper	18µm, 35µm, 70µm, 105µm, 140µm
Surface	Lead-free HAL, immersion gold, immersion tin
RoHS compliant	yes

Design parameters		Notes
Min. conductor width	200µm
Min. conductor spacing	200µm
Min. annular ring	150µm
Min. via (pth)	0.3mm	Aspect ratio 1:5
Min. Via spacing	1.0mm
Min. drilling (npth)	1.0mm

Technical properties	Unit	1 layer	2L- CCAF -01	2L- CCAF -04	2L- CCAF -05	Test method
Thermal conductivity factor	W / m*k	0.67	1	1.5	2.2	ASTM-D 5470
Dielectric constant εr(permittivity)	(for 1 MHz)	4.7	4.2	4.2	4.24	IEC-61189
Loss factor	(for 1 MHz)	0.018	0.02	0.02	0.033	IEC-61189
Surface resistance	MΩ	1.1 *10^6	5*10^7	5*10^7	3.68 *10^7	IEC-61189
Thermal durability	°C / W	-	1	0.65	0.45	ASTM-E 1225
Glass transition dielectric	°C	130	-	-	-	IPC-TM150

Overview of technical options for special production circuit boards.

For optimal preparation, we recommend that you contact our CAM-Station engineers early on. We would be very happy to advise you during the development process.

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Pricing Examples

Printed Circuit Boards always include:

- E-Test
- Solder-stop 2x
- Marking print 1x
- Gerber-Import
- Scoring (series)
- Design-Rule-Check

- Tooling costs
- Photoplot
- Conductors 150μm
- Drill holes 0,3mm
- Unlimited drilling
- HAL, FR4 1,6, 35μm Cu

Prototypes

2 layers - 6 WD	41,- €
1 Printed circuit board 100x100mm
4 layers - 8 WD	118,- €
1 Printed circuit board 160x100mm
6 layers - 8 WD	148,- €
1 Printed circuit board 160x100mm

Series

e.g. 100 pcs. Eurocard 100x160mm

2 layers - each	4,92 €

4 layers - each	7,05 €

6 layers - each	10,67 €

8 layers - each	16,99 €

SMD Stencils

max. 200x300mm - 3WD	47,50 €
1 Stencil, including 1000 pads
max. 600x600mm - 3WD	90,44 €
1 Stencil, including 2500 pads

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Prices plus VAT and delivery costs.

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