Toshiba America Electronic Components, Inc., (TAEC) has expanded its lineup of compact, high-efficiency white light emitting diodes (LEDs) with three devices in PLCC-2 packages in daylight (or cool) white and two warm whites. These white LEDs are among the brightest white LEDs in Toshiba's current LED product line in this form factor.

"Toshiba has added these new white LEDs to address the market requirements for interior lighting, automotive and LCD backlight applications. We are aggressively introducing high-quality white lights that are capable of high color uniformity and brightness," said Roger Shih, business development engineer, optoelectronics, for TAEC.

The daylight white TLWK1100C LED delivers luminous intensity of 1700 millicandelas (mcd) from a drive current of 20mA. This new device is 200 mcd brighter than the previous generation TLWK1100B, one of Toshiba's most popular white LEDs, and is well-suited for use in automotive and LCD backlighting applications. At 86 lumens per watt (lm/W), it features luminous flux (typ.) of 5.5 lumens (lm), color temperature of 6500K and chromaticity coordinates of Cx 0.31 and Cy 0.30.

Two new warm white devices for general and backlighting applications include the TLWWK1100B and the TLWLK1100B. These LEDs feature luminous intensity of 1500mcd. Both devices are offered at 77 lm/W and feature luminous flux (typ.) of 4.9 lm, and color temperature of 3500K and 3000K, respectively. The 3500K device has chromaticity coordinates of Cx 0.40 and Cy 0.39, and the 3000K device has chromaticity coordinates of Cx 0.44 and Cy 0.40.

All three LEDs are housed in a standard PLCC-2 surface-mount package that measures 3.2mm x 2.9mm x 1.9mm. Their high brightness white light output is a result of a combination of a blue InGaN (indium gallium nitride) LED and a yellow-emitting phosphor. The devices offer efficient operation with maximum power dissipation of 114mW and typical forward voltage (V(F)) of 3.2V. Operating temperature ranges from -40 degrees C to 100 degrees C.

Electrical and Optical Characteristics (Ta -25 degrees C, I(F)=20mA)

                                                      Color               Luminous         Forward  Chromaticity
                                                  Correlated           Intensity          Voltage  Coordinates
Part number         Color             Temperature        I(V) (mcd)           V(F) (V) (Cx) (Cy)
                             typ.             min.  typ.  max            typ.
TLWK1100C     Cool white    6500K   1250  1700      2500                3.2    0.31  0.30
TLWWK1100B  Warm white  3500K   1000  1500      2500                3.2    0.40  0.39
TLWLK1100B    Warm white  3000K   1000  1500      2500                3.2    0.44  0.40

Absolute Maximum Ratings (Ta = 25 degrees C)

                                     DC                    Power       Operating       Storage
                                Forward             Dissipation  Temp. T(opr)   Temp. T(stg)
    Part Number     Current I(F)(mA)   P(D) (mW)    (degrees C)    (degrees C)
    TLWK1100C
    TLWWK1100B         30                        114         -40 to 100       -40 to 100
    TLWLK1100B

Pricing and Availability
The Toshiba TLWK1100C, TLWWK1100B and TLWLK1100B white LEDs are available now, with samples priced at $0.25/each.

*About TAEC and Toshiba Corp.
Through proven commitment, lasting relationships and advanced, reliable electronic components, Toshiba enables its customers to create market-leading designs. Toshiba is the heartbeat within product breakthroughs from OEMs, ODMs, CMs, distributions and fabless chip companies worldwide. A committed electronic components leader, Toshiba designs and manufactures high-quality flash memory-based storage solutions, discrete devices, displays, advanced materials, medical tubes, custom SoCs/ASICs, digital multimedia and imaging products, microcontrollers and wireless components that make possible today's leading cell phones, MP3 players, cameras, medical devices, automotive electronics and more.

Toshiba America Electronic Components, Inc. is an independent operating company owned by Toshiba America, Inc., a subsidiary of Toshiba Corporation, Japan's largest semiconductor manufacturer and the world's third largest semiconductor manufacturer (Gartner, Preliminary 2008 WW Semiconductor Revenue Ranking, Dec. 2008). For additional company and product information, please visit http://www.toshiba.com/taec/.