The luminous intensity of white light LED for ROHM illumination under 100mA condition reaches 7CD

Semiconductor manufacturer ROHM Co., Ltd. recently developed a high luminous intensity, packaging heat dissipation good white LED "PSML1/PSML2". PSML1/PSML2 is expected to supply samples from July 2007 (sample price of about 15.4 yuan / one); from November 2007 to the beginning of the production of the scale of the production of 10 million.

The developed PSML1/PSML2 in the current region of the luminous intensity reached the highest level in the world under the 7CD (100mA current conditions). In addition, because the Cu structure with high thermal conductivity is used, and the structure is exposed on the bottom surface of the package, the path of heat to the circuit board is enlarged, and the heat dissipation performance is greatly improved. Therefore, even in the general heat dissipation of the FR-4 circuit board, but also has good heat dissipation, thermal resistance were PSML1 70 /W, PSML2 60 C /W. In addition, due to the improvement of the structure, to solve the problem of the performance is affected by temperature, ease the luminous intensity variation and tonal instability in the current zone, so that the product further prolongs the service life, but also can be used in high temperature environment.

We should give full play to the advantages of PSML1/PSML2 good heat dissipation, they can be used as automobile driving guidance system for back light source, or used as a light source and a vehicle in the car and indicator lights display, entertainment equipment and so on various products.

The main advantages of PSML1/PSML2

(1) under the condition of 100mA, the luminous intensity reaches 7CD, which is the highest level in the world

(2) due to the original structure of ROHM, the heat dissipation is good, reaching the highest level in the world

J-A value (thermal resistance) PSML1:70 C /W; PSML2:60 /W (installed on the FR-4 circuit board data)

(3) to adapt to different purposes there are two types of packaging

PSML1:3.2 * 2.8 * 0.8mm; PSML2:4.0 * 2 * 0.6mm

Source: International Electronic Business