4 Layer High Frequency PCB Built On 6.6mil and 20mil RO4350B with Blind Via for

4 Layer High Frequency PCB Built On 6.6mil and 20mil RO4350B with Blind Via for Radar Sensor

(Printed circuit boards are custom-made products, the picture and parameters shown are just for reference)

Hi Everyone,

Multilayer Rogers PCBs are made based on several core combined, which are different from FR-4 multilayer PCBs. As is known to all, there’re 8 cores in RO4350B family, i.e. 4mil (0.101mm) to 60mil (1.524mm).

So it’s very interesting that stack-up of 4 layers can be done in many different ways.

Today, we are going to introduce Rogers 4-layer PCBs built on 6.6mil and 20mil RO4350B.

Let’s see first one and stack-up is shown first.

Layer 1 to layer 2 is the first core of 6.6mil, layer 3 to layer 4 is the second core of 20mil, they are combined through 2 sheet of RO4450F (1 RO4450F=4mil). This board is used for radar sensor, 1.0mm thick, pads with immersion gold. It contains blind via from top layer to inner 1. Since it's asymmetric buildup, 1.2% warpage is allowed. It's fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 10 boards are packed for shipment.

The second one is very similar to previous one, the stack-up explains all.

Features and benefits

1) The dielectric constant (DK) is low and stable, so the signal transmission is good without delay.

2) Immersion gold has excellent surface planarity, particularly helpful for PCBs with BGA packages or even CSP mounted components to reduce failure rate during assembly and soldering.

3) 100% tests inclusive of electrical test and AOI inspection, thermal stress test, reliability test, insulation resistance test and ionic contamination test,

4) Fast and flexible to save the time of production from prototype to standard production

5) UL recognized and RoHS Directive-compliant

Applications

TV antenna, Transmitter combiner, Sound control switch induction, Tower Mounted Amplifier, RF module, Power splitter, Low Noise Block, 4G antenna

Why choose us?

1) Focus on your core competencies: We’ve deeply known it is full of fierce competition for our customers in the market. You can focus on such important competencies as research and development, sales and marketing based on our professional performance and skilled services that exceeding your expectation.

2) Cutting-edge technology: it is rational for a small and medium-sized customer to hanker after the latest equipment and manufacturing expertise for its PCBs. By the partnerships

with Bicheng PCB, you gain access to reach your expectation with our 3 factory bases with over 26,000 square meters.

4) Save the cost of production: Production cost is one of the key points of our customers’ product competitiveness. Bicheng PCB have been striving to reduce its manufacturing cost from equipment introduce, worker training and technology improvement to increase their profitability. Customers are satisfied with our cost savings but without quality loss.

5) Avoid hassle: It’s an upset matter when quality problem hassling you. Bicheng engineering design prevents problem from occurring in pre-production. You will not get headache with Bicheng prototypes, small orders and volume production. Our rate of customer complaint is less than 1% and will be solved satisfactory.

6) Save time: Market requires the products updating quickly. Bicheng PCB always works fast and flexible to save the time of production from prototype to standard production,

quick turn-around or scheduled deliveries.

7) An excellent team: Bicheng is trustworthy partner with passion, discipline, responsibility and honesty. We have a team of experienced sales persons and skilled customer services. Do not change your supplier. If change is must, Bicheng is the right one for you.