12 Jan 2007
Quartz Crystal Devices(HKTDC Electronic Components & Parts, Vol 01,2007)
|Gen-Worldly Quartz Crystal Co uses materials from Japan, Korea and the Chinese mainland to produce its GW-brand quartz crystals|
Hong Kong has numerous suppliers of a wide range of RoHS-compliant quartz crystal devices, and they offer everything from simple quartz crystals to more complex components that are integral parts of popular electronic products.
For example, the quartz crystals from Gen-Worldly Quartz Crystal Co are of the surface mount device (SMD) type. "These units are compact and can be used in small electronic devices such as MP3 players," explains manager Eddie Cheung.
"Unit prices of our SMD range of crystals range from US$0.07-0.30 FOB Hong Kong," he adds. "Usually, the final product is tailor-made to the customer's specifications using materials such as quartz crystal blanks and alloys from Japan, Korea and the Chinese mainland."
Under the GW brand, the enterprise makes 15 million quartz crystals and quartz crystal devices such as oscillators each month at its ISO 9000-certified, 1,000-square-metre, 400-worker factory in Shenzhen on the mainland.
"We are quick in delivery," Cheung says of the 18-year-old company, which usually ships orders within 10 days of confirmation. "Our minimum order requirement is 5,000 units, and we sell mostly to the mainland, the US, Europe and East Asia."
Chequers Electronic (China) Ltd also has a product portfolio that includes a variety of compact SMD quartz crystal units. "Our crystal devices are used a lot in digital electronic consumer products such as cameras and PDAs," says director Nelson Mak.
Established in 1988, the company exports mainly to the EU, the US, Japan and Korea. "We source the outer cases from Japan and quartz crystal blanks from the mainland," Mak says, stating that popular models measure 4x2.5mm or 3x2.5mm and are priced at about US$0.50 each FOB Hong Kong.
The firm manufactures about three million SMD quartz crystal units per month under its own CQ brand at three factories in Jiangsu Province on the mainland. The minimum order requirement is 1,000 units and the lead time is 3-4 weeks. "We have a workforce of more than 3,000, and each of our factories is ISO 9000-certified while one is additionally ISO 14000-certified," Mak declares.
Another manufacturer of SMD crystals is Abundance Enterprise Co, among whose products is an SMD voltage-controlled crystal oscillator measuring 7x5mm.
"As the output frequency is controlled by voltage, this device works with high precision and is commonly used in telecommunications products," assures sales engineer Jeffrey Wong. "It is competitively priced and for an order of 30,000 units, for example, the FOB Hong Kong price is about US$0.70 each," he adds.
A similar, high-precision device from this manufacturer is an SMD temperature-compensated crystal oscillator. "Also highly accurate and reliable, this model is most often used in mobile phone technology," says Wong. "Here, the unit price ranges from just over US$1 to more than US$4 FOB Hong Kong, depending on specifications."
Apart from oscillators, the company manufactures SMD crystal resonators, such as a model measuring 3.2x2.5mm. "This is a compact unit that is suitable for Bluetooth telecommunications products," Wong states. "We have another SMD crystal resonator that measures 7x5mm that is very common in cordless phones."
Using its own AEC brand, the 1988-established enterprise produces 20 million quartz crystal devices a month at its ISO 9001-certified, 18,000-square-metre, 800-worker plant in the mainland's Hubei Province. "Our products are manufactured using crystal blanks and copper from the mainland and Japan," Wong says.
"The minimum order is 1,000 units for delivery two weeks after order confirmation," he adds. "We sell worldwide, including major markets such as Europe and the US, and we also produce crystal resonators for audiovisual products and remote control units."
Meanwhile, Elemechtec Quartz Crystal Co has a catalogue packed with quartz crystal resonators available in many different frequencies. These are usually sold under the EMT brand to the mainland, Hong Kong and Taiwan.
"The cases come from Japan and the quartz crystal materials from the mainland," states business assistant Mark Chan, adding that the minimum order is 2,000 units with a lead time of two weeks.
Set up in 1991, today the firm operates a 20,000-square-foot, 70-worker factory in Shenzhen. "We manufacture about two million quartz crystal resonators a month," Chan adds.
Alongside these and other manufacturers, Hong Kong also has numerous trading firms playing important roles in satisfying the global demand for electronic components. Among them is A & T Trading Co, which deals in an extensive array of quartz crystal devices. "Our products include quartz crystals, both of the low-profile and SMD types," manager Alan Au says.
The 23-year-old firm handles orders for some four million quartz crystal devices a month, accepting minimum orders of 1,000 units for delivery 2-4 weeks after order confirmation. "Our largest market is Europe, which accounts for about 50% of our turnover," says Au. "We also export to North America and Southeast Asia."
As is crystal clear from the great variety, quartz crystal devices from Hong Kong are well able to meet the diverse needs of different customers.
WRITTEN BY LIZA LEE
Chequers Electronic (China) Ltd
Mongkok Commercial Centre
16 Argyle St
Mong Kok, Kowloon
Elemechtec Quartz Crystal Co
Mega Trade Centre
1 Mei Wan St
Tsuen Wan, New Territories
Gen-Worldly Quartz Crystal Co
Sun Ling Plaza
30 On Kui St
On Lok Tsuen
Fan Ling, New Territories