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The Department of Optics and Photonics in the Institute of Optical Sciences (IOS) Taiwan has successfully investigated the world’s smallest micro-optical modules that guarantee the fastest possible rate of reliable data transmission up to 40Gb/s. The rate has also been upgraded from Megabyte to Gigabyte. Such “seckilling” development has formed a revolution of lighting in the optoelectronics industry!

As a result, we are fully awake to the digital technology of the high-definition video and audio and high-speed mobile network situation. The major electronic manufacturers must continue to enhance its data transmission rate and improve the quality and speed of audio and video data transmission in favour of a competitive electronic market for consumers.
 
In addition to the recently Introduction to High Frequency Board- JetPCB takes control of impedance the transmission speed of electronic devices will be affected by copper traces, connectors, chip packaging, and through-hole caused by poor signals (Note 1).

When FR4 can no longer satisfy your needs…
Considering factors of copper traces, we use low loss insulating material, such as Nelco and Rogers to replace other FR4 materials in order to reduce the signal attenuation caused by the copper traces on a PCB. Though Rogers material can provide a data transmission rate which is about 2 times greater than other FR4 materials (including Nelco), the selling price is about 15~ 20% higher. Therefore, the most ideal material to be used is Nelco.

Following is an introduction of Rogers and Nelco materials:

	Rogers*	Nelco*
Place of origin	United States (Connecticut, CT)	United States (New York)
Characteristics of standard	An alternative to PTFE Excellent high frequency performance due to tight dielectric tolerance and low loss Stable electrical properties versus frequency Low thermal coefficient of dielectric constant Low Z-axis expansion Low in-plane expansion coefficient Excellent dimensional stability Volume manufacturing process Easy, low cost fabrication RoHS compliant, environmentally friendly	RoHS Compliant High Tg / High-speed / Low loss/High thermal performance/ Electrical specifications CAF(Note 2) The insulating properties of its high compatibility & high thermal stability qualify the needs for lead-free assembly
Range of applications	Cellular Base Station Antennas and Power Amplifiers RF Identification Tags Automotive Radar and Sensors LBN’s for Direct Broadcast Satellites (Note 3)	High speed low loss and fine-line multilayers Backplanes Communications and networking servers Wireless handsets and infrastructure Automotive Diverse mounting and packaging Buried capacitance
Other recommendations	RO4000® material's thermal coefficient of expansion (CTE) is similar to that of copper which allows the material to exhibit excellent dimensional stability, a property needed for mixed dielectric multi-layer boards constructions. RO4003® laminates are currently offered in various configurations utilizing both 1080 and 1674 glass fabric styles, with all configurations meeting the same laminate electrical performance specification. Specifically designed as a drop-in replacement for the RO4350B laminates utilize RoHS compliant flame-retardant technology for applications requiring UL 94V-0 certification	New lead-free assembly compatible materials featuring CAF resistance and enhanced electrical properties. N4000-13 The leading high speed digital, low loss epoxy material with a proven track record of satisfied customers. Featuring outstanding thermal and electrical properties. N4000-13 EP™ Based on the proven N4000-13 and providing enhanced thermal reliability and CAF resistance for high temperature and lead-free assembly processes. N4000-29 Designed for lead free processing and high-performance applications. Featuring a high Tg, extremely low-CTE and excellent moisture resistance (Note 4)
JetPCB Service Description	For more information related to manufacturing production of single/ double-sided/ multilayer PCB, please refer to  “Production Info” or RO4000® Series High Frequency Circuit Materials	Taiwan currently does not have Nelco suppliers so it must be imported from Singapore. For more information please contact our sales team; information on different types of materials can be found in here

*Copyright Policy: The information provided above comes from the company's website. JetPCB.com shares such information for educational purposes only.

Note:
*1 Source may refer to: Global Sources Electronic Engineering Times
*2 CAF : Conductive Anodic Filament
*3 LBN: Low Noise Blockconverter
*4 Low CTE: low coefficient of thermal expansion


Source may refer to:
Global Sources Electronic Engineering Times
Yam News
National Central University News