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Guiding Light(HKTDC Electronic Components & Parts, Vol 01,2009)


Optoelectronic Components

LED bulbs from Ningbo Sunpu Opto Semiconductor Co Ltd work much longer than ordinary energy-saving light bulbs
Energy efficient and dependable, the light-emitting diode (LED) is gaining popularity as the functional unit for optoelectronic components.

One example is a super energy-saving 5W LED bulb, model M19E27, from Ningbo Sunpu Opto Semiconductor Co Ltd.

"This model consumes 60% less power than conventional incandescent bulbs and has a lifespan of about 20,000 hours compared with 3,000 hours for incandescent counterparts," says Director Scott Tang.

Offering a wide choice of emitted light - including red, green, blue, yellow, pure white and warm white - the bulb uses high-brightness LED technology and gives off different levels of luminous intensity for indoor applications.

"Our LED bulbs are priced from US$10-20 each FOB Hong Kong, depending on the model. They're especially popular in Japan and Europe, where businesses such as supermarkets opt to use them because of their energy efficiency and durability," Mr Tang says.

Emitting an equally wide light spectrum is the company's 12W LED flux strip model 2.254X11.

"This model is a favourite with restaurants that require cove lighting decor, being 60% more energy-efficient than fluorescent lights and lasting about 40,000 hours," Mr Tang notes, adding that the item is priced at about US$10 per metre FOB Hong Kong.

Bright ideas

Also capable of high luminosity, low power consumption and longevity are offerings from Wah Wang Holdings (HK) Co Ltd, such as the firm's series of through-hole LEDs that are widely used in advertising panels and torches.

"Besides, they can also be used in solar lamps, toys and other premium lighting products such as small objects that require decorative lights," says Winson Au, Assistant to the General Manager.

The LEDs come in different sizes, including 10mm (such as model WW 10A 3SWQ4-N2), 5mm (such as model WW 05A 3SWQ4-N) and 3mm (such as model WW 03A 3SWQ4-N2).

The company also offers a series of high-power LEDs, available in 0.5W, 1W, 3W or 6W, which are often used outdoors in torches, lighting systems and street lamps, and indoors in decorative or emergency lighting.

"Our 1W high-power LEDs, for example, provide a light intensity that is 20 times that of normal LEDs, and have a lifespan of more than 50,000 hours," Mr Au claims, adding that the series includes a 3W RGB LED (model WW-E203FH1-B8), a 1W star power LED with heat sink (model WW-E101WL1-W4), and a 6W star power LED (model WW- E306WH0-W2).

Also on offer is Wah Wang's series of top LEDs, including 35x28mm model WW-WNA30TS-Q.

"This version is widely used in mobile phones and other digital devices that require backlighting solutions because of its high light intensity, superb heat dissipation ability and surface-mounted interface," explains Mr Au.

Stunning spectaclesf

Elsewhere, to dress up buildings with dazzling light effects, LED blocks made by Sui Rich Esat HK Co Ltd provide the perfect solution.

"Used for accent lighting and perimeter lighting, these LED blocks comprise small direct-view fixtures that, when put together in large numbers, create mesmerising lighting effects on buildings with changing colours in rich, saturated tones," says Sales Engineer Daniel Li.

Each light fixture is fully enclosed in a rugged die-cast aluminium housing and is given an IP66 rating, which means it can be used under wet conditions.

The LED blocks offer the RGB colour range and three types of control: computer-based video control, DMX512 control and stand-alone pre-programmed control.

"We can provide clients with solutions and installation services to meet their specific requirements. Our engineers and technicians have installed the blocks on buildings in such cities as Shanghai, Shenzhen and Xiamen," Mr Li notes.

Also increasingly popular are the company's LED curtain screens, which have resolutions similar to TVs and which are ideal for applications such as large outdoor advertising panels.

"Our main markets for this product are Europe, the US and Asia," says Mr Li.

Interior illumination

For indoor decorations, the company's LED SMD festoon model 72819295916 can be used in display cabinets or curved decorations to provide a soft-lit ambience. "The 0.72W model provides brightness equivalent to a conventional 5W bulb but consumes 80% less power," Mr Li says.

With a diameter of 10.5mm and a length of 41mm, the festoon has a diffused light angle of 120° and offers a colour choice of cool white, warm white, blue, green, red and yellow.

Clearly, bright ideas for optoelectronic components abound in China, where LED manufacturers can be buyers' guiding lights.


Elite Enterprises (HK) Co Ltd
Flat 1603A, Nanyang Plaza
57 Hung To Rd
Kwun Tong, Kowloon
Hong Kong
Tel: 852-2723-3122
Fax: 852-2723-3990
Web: www.elite-ent.com.hk
Year Established: 2001
Major Product Categories: LED lamps, high-power LEDs, SMDs, super flux, LED modules, LED screens
Own Brands & Certificates: Prolight; RoHS, CE
Minimum Order: -
Monthly Production: 50 million pieces (Prolight product model PG1N-1LWS)
Delivery Time: 1 month
Factory Size & Location: 500 square metres
Workforce: 300
Light Engine Ltd
6/F, Photonics Centre
2 Science Park East Ave
Hong Kong Science Park
Sha Tin, New Territories
Hong Kong
Tel: 852-2144-2082
Fax: 852-2144-2081
Web: www.lightengine-tech.com
Year Established: 2003
Major Product Categories: LED lighting and display modules, LED bulbs, signage, automotive items
Own Brands & Certificates: ISO 9001, ISO 14001, ISO TS 16949
Minimum Order: 5,000 pieces
Monthly Production: -
Delivery Time: 4-6 weeks
Factory Size & Location: 45,000 square metres; Huizhou, Dongguan, Zhongshan
Workforce: 1,200
Ningbo Sunpu Opto Semiconductor Co Ltd
150 Xin Hui Rd, Hi-Tech Park
Ningbo, Zhejiang
Tel: 86-574-87901630
Fax: 86-574-87902332
Web: www.sunpu-opto.com
Year Established: 1990
Major Product Categories: LEDs, LED lighting products
Own Brands & Certificates: ISO 14001, ISO 9001,
ISO/TS16949, RoHS, CE
Minimum Order: 50,000 pieces (LEDs) , 10,000 pieces (LED bulbs) 1,000 pieces (other LED lighting products)
Monthly Production: 150 million pieces
Delivery Time: 30 days
Factory Size & Location: 60,000 square metres; Ningbo
Workforce: 600
Optosupply Ltd
Unit 202, Wah Yiu Ind Centre
30-32 Au Pui Wan St, Fo Tan
New Territories, Hong Kong
Tel: 852-2790-5099
Fax: 852-2342-9833
Web: www.optosupply.com
Year Established: 2001
Major Product Categories: LEDs
Own Brands & Certificates: Optosupply
Minimum Order: 1,000 pieces
Monthly Production: 60 million pieces
Delivery Time: 1-2 weeks
Factory Size & Location: 5,000 square metres; Shenzhen
Workforce: 300
Sui Rich Esat HK Co Ltd
Rm 11, 10/F, Blk B
Merit Ind Centre, 94 To Kwa Wan Rd
To Kwa Wan, Kowloon
Hong Kong
Tel: 852-2333-9732
Fax: 852-2333-9679
Web: www.suirich.com.hk
Year Established: 2001
Major Product Categories: LED application products
Own Brands & Certificates: Suirich
Minimum Order: US$10,000
Monthly Production: -
Delivery Time: 4-6 week
Factory Size & Location: Shanghai, Shenzhen, Dongguan
Workforce: 200
Wah Wang Holdings (HK) Co Ltd
Unit 08, 8/F, Nanyang Plaza
57 Hung To Rd, Kwun Tong
Kowloon, Hong Kong
Tel: 852-2512-9939
Fax: 852-2344-2398
Web: www.wahwang.com
Year Established: 1999
Major Product Categories: components and products
Own Brands & Certificates: RoHS, SGS, En60825
Minimum Order: -
Monthly Production: 50 million pieces
Delivery Time: 7-25 days
Factory Size & Location: Shenzhen
Workforce: -