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OLF249 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – Radiation Tolerant Phototransistor | |||
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OLF249
Radiation Tolerant Phototransistor
Hermetic Surface Mount Optocoupler
1
ANODE
CATHODE
2
BASE
7
COLLECTOR
5
EMITTER
6
.030±.005
SCHEMATIC
.015±.002
1
8
2
7
3
6
4
5
.050 BSC
.180 SQ. MAX
.200 MIN.
.100 MAX.
.004/.006
SEATING PLANE
PACKAGE OUTLINE
Features
⦠Hermetic SMT package
⦠Compliant surface mounting leads
⦠High current transfer ratio
⦠Small package size
⦠High reliability and rugged construction
⦠Hi-rel screening available
⦠Radiation tolerant
Description
The OLF249 consists of a light emit-
ting diode optically coupled to a NPN silicon
phototransistor mounted in a 8-pin hermetic
surface mount flat pack package. The
leads can be formed to provide compliant
solder connections to the mounting sub-
strate. Electrical parameters are similar to
the JEDEC registered 4N49 optocoupler but
with much better CTR degradation charac-
teristics due to radiation exposure
Special electrical parametric selections
are availabe on request.
NOTES:
1. Measured between pins 1, 2 , 3 and 4 shorted together and pins 5, 6, 7 and 8 shorted together. TA = 25°C and duration = 1 second.
2. Derate linearly to 125°C free-air temperature at 0.67 mA / °C above 65°C.
3. For pulse width ⤠1 µS, pulse repetition rate ⤠300 pps.
4. Derate linearly to 125°C free-air temperature at 3.0 mW / °C above 25 °C
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