R1524 Datasheet, PDF (8/32 Pages) RICOH electronics devices division – Input Voltage Range (Maximum Rating) 3.5 V to 36 V (50 V)

R1524x
NO.EA-332-160720
PACKAGE INFORMATION
POWER DISSIPATION (SOT-23-5)
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the
measurement at the condition below:
Measurement Conditions
Environment
Board Material
Board Dimensions
Copper Ratio
Through-holes
Standard Test Land Pattern
Mounting on Board (Wind velocity = 0 m/s)
Glass cloth epoxy plastic (Double sided)
40 mm x 40 mm x 1.6 mm
Top side: Approx. 50%, Back side: Approx. 50%
φ 0.5 mm x 44 pcs
Measurement Result
Power Dissipation
Thermal Resistance
(Ta = 25°C, Tjmax = 125°C)
Standard Test Land Pattern
420 mW
θja = (125 - 25°C)/0.42 W = 238°C/W
On Board
(Standard Land Pattern)
Ambient Temperature vs. Power Dissipation
IC Mount Area (Unit: mm)
Measurement Board Pattern
The above graph shows the Power Dissipation of the package based on Tjmax = 125°C and Tjmax = 150°C.
Operating the IC in the shaded area in the graph might have an influence its lifetime.
Operating time must be within the time limit described in the table below, in case of operating in the shaded area.
Operating Time
Estimated years
(Operating four hours/day)
13,000 hours
9 years
8