Hitachi Chemical Launches Mass Production of 5G-Compatible Printed Wiring Board Material �MCL-HS200� With Low Transmission Loss and Low Warpage Properties

TOKYO–(BUSINESS WIRE)–Hitachi Chemical Co., Ltd. (Director and President: Hisashi Maruyama; hereinafter �Hitachi Chemical”) launched mass production of “MCL-HS200,” an advanced functional laminate material for printed wiring boards, with low transmission loss and low warpage properties required for semiconductor packaging substrates used in such fields as fifth-generation mobile communications systems (5G), advanced driver-assistance systems (ADAS)^*1, and artificial intelligence (AI) in March.

With technological innovations like the Internet of Things (IoT) for electronics-related products, ADAS, and AI making strides in recent years, 5G networks providing high speed, high capacity, low latency, and multiple connections have become indispensable for the widespread use of these technologies. Demand for 5G is also rising as people around the world spend more time working remotely amid the coronavirus pandemic.

Applications such as 5G and ADAS require higher frequency bands than electric signals used by fourth-generation mobile communications systems (4G), but with electric signals suffering significant attenuation (transmission loss) at higher frequencies, lower transmission loss is required for high frequency circuit boards. Reducing signal delay is also an important requirement.

Furthermore, as devices mounted on smartphones, etc. become smaller and more functionally sophisticated, demand is growing for thinner circuit boards that also minimize warpage caused by semiconductor packaging. However, creating a material capable of not only reducing transmission loss and signal delay but also minimizing warpage presented a difficult challenge.

By applying low polarity resin materials and low dielectric glass cloth, Hitachi Chemical achieved lower transmission loss properties (low dielectric loss tangent) and lower dielectric constant^*2, reducing signal delay. In addition, Hitachi Chemical attained superior low warpage properties required for thinner modules by using low coefficient of thermal expansion (CTE) resins and increasing the filler content. Hitachi Chemical combined its low CTE technology for semiconductor packaging substrates and low dielectric constant technology for multilayer substrate materials designed for high-speed communications, which successfully developed a material with high-dimensional properties of low CTE 10 ppm/? and low dielectric constant (Dk) 3.4 (10 GHz).

Hitachi Chemical is currently pursuing the development of even thinner and lower dielectric constant materials. Hitachi Chemical will continue to contribute to more advanced functional printed wiring boards through our superior technologies and new product development.

<About MCL-HS200>

Overview
MCL-HS200 is a printed wiring board material with low transmission loss and low warpage properties, designed for 5G-compatible radio frequency front-end (RFFE) modules^*3 and antenna in package (AiP) ^*4.

Features
– Superior electric properties (low dielectric constant and low dielectric loss tangent) required for high capacity and high-speed communications and 5G-compatible modules

– Superior low warpage properties (low CTE) required for thinner modules

– Lineup including ultra-thin prepregs applicable to thinner structures

– Superior circuit filling properties applicable to thin substrates

(Provides high fluidity of resin which is capable of circuit filling to thin substrates)

General Properties

Item	Condition	Unit	HS200	HS200(D)	E-700G(R)	E-705G
			E-glass	Low Dielectric glass	E-glass
CTE	a1 (X,Y)	ppm/oC	10	9	9	6
Tg (Grass-transition temperature)	DMA	oC	260	260	300	300
Flexural modulus	–	GPa	18	18	33	33
Dielectric constant	10GHz	–	3.7	3.4	4.6	4.4
Dielectric factor	10GHz	–	0.0045	0.0028	0.0130	0.0115
Note: E-700G(R) and E-705G are Hitachi Chemical’s standard products for low CTE substrates. Note: Above values are concept values for 200?m thickness.

Applications
RFFE modules, AiP, etc. for 5G-compatible smartphones

Please feel free to contact with us through the following URL.

https://www8.hitachi.co.jp/inquiry/hitachi-chem/en/products/form.jsp?UM_QNo=3

*1 Advanced driver-assistance systems (ADAS) are systems to prevent accidents by detecting the vehicle’s surroundings through sensors mounted on its front, sides and rear.

*2 Dielectric constant is the value representing the degree of electronic polarization of a substance in an electric field that exerts force on a charged object, expressed as the ratio of the dielectric constants of two substances.

*3 RFEE module extracts signals containing the information itself (baseband) from the received high frequency signals or modulates the baseband signal for transmission to the outside.

*4 AiP is a technology where the antenna is integrated on the IC package. The antenna element can be formed on the IC package due to higher frequency, and the electric signals can be efficiently amplified.

Contacts

Hitachi Chemical Co. America, Ltd.

Dragon Hikida

TEL: (408)507-9058

E-mail hikida@hitachi-chemical.com