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Printed Circuit Boards(HKTDC Electronic Components & Parts, Vol 01,2003)

Hong Kong Electronic Components & Parts

Vol 1, 2003

Product Features

Coils
Transforming Consumer Electronics

Printed Circuit Boards
All Aboard

Jacks & Sockets
Tiny Taskmasters

Printed Circuit Boards

All Aboard

Carven Circuits Ltd produces different types of PCBs, such as FR-4 type, double-sided, gold-plated, and hot air levelling rigid boards for the US and Germany

Printed circuit boards (PCBs) are vital components of IC chip technology that are used in just about every modern appliance and device. Not surprisingly, P Hong Kong can supply quality PCBs at excellent prices - and for many different industries.

Carven Circuits Ltd, for example, is a manufacturer of high quality PCBs whose major product line is FR-4 type, double-sided, gold-plated and hot air levelling rigid boards for the telecommunications, automobile and electronic equipment industries.

The company holds numerous endorsements such as QS-9000, TL 9000 and ISO 9002, ISO 14001 and OHSAS 18001 certificates, Underwriters Laboratories' full process approval and various local industry awards.

Sales manager Margaret Mok says, "We manufacture both single- and double-sided boards and surface finish using hot air levelling and flash gold plate. Our major markets are the US and Germany and our main buyers are in the automotive industry."

She adds, "Our customers in the US believe that while the market remained flat in 2002 it will be better in the third quarter of 2003." Delivery time is 2-3 weeks for a minimum order of one FEU.

Mok adds Carven is ready to meet European demands for lead-free boards by making lead-free products and says it is "well prepared" for the upcoming lead ban in 2004.

Elec & Eltek Int'l Ltd is capable of producing PCBs of 30 layers and more thanks to its extensive experience and knowledge of PCB manufacturing and cutting-edge technology. The company can also provide blind-via and buried-via design features with tight impedance control for high-speed applications.

Elec & Eltek adopted laser/resin coated copper (RCC) technology in 1999 to mass-produce high-density interconnect microvia boards. It has also worked at mastering odd- and large-size backplane boards for the communications infrastructure market, especially gigahertz operating environments.

Elec & Eltek CEO Canice Chung says, "We build more than 30 layers for backplane boards used in communication systems and high-end servers. Middle range high-end PCBs - say eight- to 14-layers - go on server insertion cards, in notebooks and projectors."

Chung says Elec & Eltek ships globally. "One quarter goes to the US, one quarter to Europe, and the balance to Asia - 25% to the Chinese mainland and 25% to south Asia." Delivery time after confirmation of a minimum order of 1,000 square feet is around 14 days.

Leadway Technology Corp Ltd produces the PCBs used in remote control devices, telecommunications, computers and peripherals, audio devices and Personal Digital Assistants (PDAs).

Managing director Eddy Tsoi explains, "We have 15 years of PCB manufacturing experience, with various surface finish capabilities and types of manufacturing process control.

"For example, print and etch plus flux coating, hot air levelling, gold plating plus gold finger tabs, and selective gold - flash or heavy gold - as well as additional processes such as carbon print. Special products include bondable PCB for gold (Au) wire and aluminium (Al) wire bonding."

The company produces numerous PCB types and quantities including single-layer and double-layer (35%), four-layer (35%), six- to eight-layer (25%), and special products (5%).

Leadway supports customers with up-front feasibility studies and assistance for specific construction projects, use of special materials and development of special products.

Tsoi says the firm's PCB key export markets by geographical area are the US (30%), Japan (30%), Asia (35%), Europe and others (5%). Leadway has no minimum order policy. Delivery time is 3-4 weeks.

Global Circuits Board Co Ltd, established in 1987, is a small-to-medium sized PCB manufacturer with UL and ISO 9002 certifications that tends to service the consumer goods market. The company produces single- and double-sided boards as well as multi-layered boards.

Marketing manager Simon Cheang says, "We produce rigid-type PCB boards up to eight layers. Our company can handle different finishes, including hot air levelling, gold plated and immersion plating using gold."

Cheang maintains that while every country is looking at environmental protection, the issue is particularly important in Europe and Japan. "They are looking for lead-free products so we have moved away from hot air levelling to use the Entek finishing process for the copper." Global Circuits undertakes this process on request. Delivery time is one week for a sample and three weeks for production. The minimum order value is US$3,000.

Hong Kong Membrane Circuit Technology Corp Ltd mostly provides customised telecommunications products. The firm was set up by Luen Fung Silicone Rubber Mfg Co, which has a lot of experience in silicone rubber technology. "This is very useful when it comes to interfacing PCBs with keyboards," says manager Leo Lam.

"We supply the thin flexible type PCBs, single- and double-sided, that are typically for notebook computers, mobile phones and cameras," he explains. "While we do not specify a minimum order, delivery time is around two weeks."

WRITTEN BY TONY HENDERSON

Contact Details

Carven Circuits Ltd
1/F, New East Sun Ind Bldg
18 Shing Yip St, Kwun Tong
Kowloon, Hong Kong
Tel: 852-2790-3023
Fax: 852-2341-2112
Email: mmok@carvencircuits.com.hk

Elec & Eltek Int'l Ltd
2/F, Blk A
Merit Ind Centre
94 To Kwa Wan Rd
Kowloon, Hong Kong
Tel: 852-2954-3009
Fax: 852-2330-7798
Email: kevinma@eleceltek.com

Global Circuits Board Co Ltd
Rm C, 8/F
Manning Ind Bldg
118 How Ming St, Kwun Tong
Kowloon, Hong Kong
Tel: 852-2344-2069
Fax: 852-2950-0112
Email: info@gcb.com.hk

Hong Kong Membrane Circuit Technology Corp Ltd
Unit 13, 10/F
Heng Ngai Jewelry Centre
4 Hok Yuen St, Hung Hom
Kowloon, Hong Kong
Tel: 852-2954-4200
Fax: 852-2333-5979
Email: hkmh@hkmembrane.com.hk

Leadway Technology Corp Ltd
Unit C, 9/F
China Trade Centre
122-124 Wai Yip St, Kwun Tong
Kowloon, Hong Kong
Tel: 852-2552-9600
Fax: 852-2553-2699
Email: info@leadway.com.hk

Universal Mfg (HK) Co Ltd
Unit 4, 10/F
Hung Tai Ind Bldg
37-39 Hung To Rd, Kwun Tong
Kowloon, Hong Kong
Tel: 852-2952-9802
Fax: 852-2952-9606
Email: uml@netvigator.com