Mixed Material Circuit Board Different Materials Combined Fr4 PCB

• Customization: Available
• Type: Rigid Circuit Board
• Dielectric: CEM-4
• Model NO.: BIC-072-V1.0
• Material: Fiberglass Epoxy
• Flame Retardant Properties: V0
• Mechanical Rigid: Rigid
• Processing Technology: Electrolytic Foil
• Base Material: Aluminum
• Insulation Materials: Hydrocarbon Resin
• Model: PCB
• Brand: Rogers
• Tihickness: 8mil, 10mil, 12mil, 20mil, 32mil and 60mil
• Soldermask Color: Blcak, Blue, Yellow, Red, Green...
• Copper Weight: 0.5oz, 1oz, 2oz
• Transport Package: Packing
• Specification: ≤ 400mm X 500mm
• Trademark: Bicheng
• Origin: China
• HS Code: 8534009000
• Production Capacity: 10000PCS/Year

Product Description

Hybrid PCB Mixed Material Circuit Board Different Materials Combined PCB RO4350B + FR4 + RT/duroid 5880 with Immersion Gold
(PCB's are custom-made products, the picture and parameters shown are just for reference)

Hello Everyone,
Today we're going to talk about hybrid PCB. We mainly refer to high frequency material mixed with epoxy glass.
Let's see the stack-up to get idea about hybrid structure.

Layer 1 to layer 2 is the core of RO4350B high frequency material and layer 3 to layer 4 is the core of FR-4 epoxy glass. The 2 cores are bonded by a sheet of adhesive (prepreg).

Types of hybrid PCB
The hybrid PCB can be a mixture of FR-4 and high frequency material as abovementioned, another type is a mixture of high frequency material with different dielectric constant (DK), for example RT/duroid 5880 and RO4350B etc. 

Why do we use hybrid PCB?
There're 3 main reasons that convince us to use this type of high frequency multilayer PCB, i.e. cost, reliability improved and electrical properties enhanced.

The cost of high frequency material is much higher than FR-4, sometimes, when using hybrid of FR-4 and high frequency material can solve the cost problem.

It causes reliability problems when the CTE value of the PCB material used is relatively high, while some high frequency materials have high CTE characteristics. When a low CTE FR-4 material is combined with a high CTE material to make a multilayer board, the composite CTE is acceptable, thus enhancing reliability.

Most of the time, some lines of the mixed PCB board require very high electrical performance, some do not require high, in this case, the parts with low electrical performance requirements will be used FR4, while the parts with high electrical performance requirements will use more expensive high frequency materials. Some using different DK of material to make mixed PCB, it is also to improve electrical properties, such as in some applications of combiners and filters, using different values of DK material.

Micro-section of a hybrid PCB

Why choose FR-4?
Mixture of FR-4 and high frequency materials is becoming more and more common because FR-4 and the vast majority of high frequency materials have little compatibility problems.


Lamination
To get a reliable lamination, we first choose PP sheet of high frequency material and use the correct pressing cycle. The adhesive layer of the same material is more favorable for the simpler pressing cycle.

Our PCB Capability(Hybrid PCB)

PCB Type:	Hybrid PCB, Mixed PCB
Hybrid type:	RO4350B + FR4;
	RO4003C + FR4;
	F4B + FR4;
	RT/duroid5880 + FR4;
	RT/duroid5880 + RO4350B
	RO3000 Series + FR4
	RT/duroid +FR4
Solder mask:	Green, Red, Blue, Black, Yellow
Layer count:	4 Layer, 6 Layer, Multilayer
Copper weight:	1oz (35µm), 2oz (70µm)
PCB thickness:	1.0-10mm
PCB size:	≤400mm X 500mm
Surface finish:	Bare copper, HASL, ENIG, Immersion tin, Immersion silver, OSP, ENEPIG, Pure gold

Thank you for your reading and you're welcome to contact us for your PCB enquiries.