R1510S Datasheet, PDF (19/41 Pages) RICOH electronics devices division – Input Voltage Range (Maximum Rating) Max. 36.0V (50V)

PACKAGE INFORMATION
R1510S
NO.EA-185-140724
POWER DISSIPATION (HSOP-8E)
Power Dissipation (PD) depends on conditions of mounting on board.
This specification is based on the measurement at the condition below:
Measurement conditions
Ultra High Wattage land pattern
Environment
Mounting on board (Wind velocity=0m/s)
Board Material
Glass cloth epoxy plastic (4 layers)
Board Dimensions
Copper Ratio
Through – holes
76.2mm x 114.3mm x 0.8mm
Top side, Back side : 50mm square : Approx.95%
2nd, 3rd Layer: 50mm square : Approx.100%
φ 0.4mm x 21pcs
Measurement Results
Power Dissipation
Thermal Resistance
(Ta=25°C, Tjmax=125°C)
Ultra High Wattage land pattern
2.9W
θja = (125-25°C)/2.9W= 35°C/W
θjc=10°C/W
76.2
50
4.0
3.0 ^2.9
2.0
Ultra High Wattage
Land Pattern
1.0
0
105
0 25 50 75 100 125 150
Ambient Temperature (°C)
Power Dissipation
Measurement Board Pattern
IC Mount Area (Unit : mm)
19