ACPL-P314-060E 데이터 시트보기 (PDF) - Avago Technologies
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ACPL-P314-060E Datasheet PDF : 14 Pages
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Thermal Model for ACPL-P314/W314 Streched-SO6 Pack-
age Optocoupler
Definitions
R11: Junction to Ambient Thermal Resistance of LED due
to heating of LED
R12: Junction to Ambient Thermal Resistance of LED due
to heating of Detector (Output IC)
R21: Junction to Ambient Thermal Resistance of Detec-
tor (Output IC) due to heating of LED.
R22: Junction to Ambient Thermal Resistance of Detec-
tor (Output IC) due to heating of Detector (Output
IC).
P1: Power dissipation of LED (W).
P2: Power dissipation of Detector / Output IC (W).
T1: Junction temperature of LED (˚C).
T2: Junction temperature of Detector (˚C).
Ta: Ambient temperature.
ΔT1: Temperature difference between LED junction and
ambient (˚C).
ΔT2: Temperature deference between Detector junction
and ambient.
Ambient Temperature: Junction to Ambient Thermal
Resistances were measured approximately 1.25cm above
optocoupler at ~23˚C in still air
Description
This thermal model assumes that an 6-pin single-channel
plastic package optocoupler is soldered into a 7.62 cm x
7.62 cm printed circuit board (PCB). The temperature at
the LED and Detector junctions of the optocoupler can
be calculated using the equations below.
T1 = (R11 * P1 + R12 * P2) + Ta -- (1)
T2 = (R21 * P1 + R22 * P2) + Ta -- (2)
Jedec Specifications R11
low K board
357
R12, R21
R22
150, 166
228
high K board
249
76, 79
159
Notes:
1. Maximum junction temperature for above parts: 125 °C.
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Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0634EN
AV02-0158EN - July 14, 2011
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