lhir43743/a-pf doc. no : qw0905- rev. : date : - 2013 a 05 - jul. data sheet lhir43743/a-pf infrared emitting diodes ligitek electronics co.,ltd. property of ligitek only pb lead-free parts l dcc
t-1 3/4 package individually part no. infrared emitting diodes encapsulated in water clear plastic the lhir43743/a-pfseries are high power solution grown efficiency gallium arsenide descriptions: 3. low average degradation. 2. suitable for pulsed applications. 1. high radiant intensity. features: device selection guide: note : 1.all dimension are in millimeter tolerance is lhir43743/a-pf ligitek electronics co.,ltd. property of ligitek only page 1/8 2.54typ + - 5.2 25.0min 1.5 max
note : 1.the forward voltage data did not including 0.1v testing tolerance. 2. the radiant intensity data did not including 15% testing tolerance. absolute maximum ratings at ta=25 " ligitek electronics co.,ltd. property of ligitek only electrical optical characteristics (aa=25) v v 1 50 ratings hir a ma unit page2/8 lhir43743/a-pf part no. vertical axis 26
a11 a10 20 17 24 20 ligitek electronics co.,ltd. property of ligitek only lhir43743/a-pf brightness code for standard led lamps group bin code part no. radiant intensity(mw/sr)at 20 ma a9 min. 14 max. 17 page3/8 a7 10 12 a6 8 10 a5 6 8 a8 12 14 a12 24 29
fig.3 relative radiant power vs. forward dc current fig.5 forward dc voltage vs. temperature i fdc [ma] f o r w a r d d c v o l t a g e n o r m a l i z e @ 2 0 m a , 2 5 " ambient temperature [ " ] r e l a t i v e r a d i a n t p o w e r n o r m a l i z e @ 2 0 m a fig.4 relative radiant power i fpk [ma] r e l a t i v e r a d i a n t p o w e r n o r m a l i z e @ 1 0 0 m a typical electro-optical characteristics curve forward voltage[v] fig.1 forward current vs. rorward voltage f o r w a r d c u r r e n t [ m a ] wavelength[nm] fig.2 relative radiant power vs. wavelength r e l a t i v e r a d i a n t p o w e r n o r m a l i z e @ 2 0 m a ligitek electronics co.,ltd. property of ligitek only hir chip 0.01.02.03.04.0 0.1 1 10 100 1000 10 0.1 1 0.1 -40 0.8 -40 0.0 r e l a t i v e r a d i a n t p o w e r n o r m a l i z e @ 2 0 m a , 2 5 " ambient temperature[ " ] fig.6 relative radiant power vs. temperature vs. forward peak current 1.0 10.0 10100 1001000 1.0 10.0 0.9 1.0 1.1 1.2 -20020406080100-20040 2060100 80 0.5 1.0 1.5 2.0 2.5 3.0 page4/8 0.5 0.0 800 1.0 850 900 950 lhir43743/a-pf part no.
cleaning: use alcohol-based cleaning solvents such as isopropyl alcohol to clean the led. esd(electrostatic discharge): static electricity or power surge will damage the led. use of a conductive wrist band or anti-electrosatic glove is recommended when handing these led. all devices, equipment and machinery must be properly grounded. storage time: 1.the operation of temperatures and rh are : 5 " ~35 " ,rh<60%. 2.once the package is opened, the products should be used within a week. otherwise, they should be kept in a damp proof box with descanting agent. considering the tape life, we suggest our customers to use our products within a year(from production date). 3.if opened more than one week in an atmosphere 5 " ~ 35 " ,rh<60%, they should be treated at 60 " 5 " fo r 15hrs. drive method: led is a current operated device, and therefore, require some kind of current limiting incorporated into the driver circuit. this current limiting typically takes the form of a current limiting resistor placed in series with the led. consider worst case voltage variations than could occur across the current limiting resistor. the forwrd current should not be allowed to change by more than 40% of its desired value. (a) recommended circuit. (b) the difference of brightness between led could be found due to the vf-if characteristics of led. circuit model a led circuit model b led page 5/8 ligitek electronics co.,ltd. property of ligitek only lhir43743/a-pf part no.
2. the led lamps are designed for high-density mount- ing and have a structure which can alleviate mechan- ical stress due to clinching . nevertheless , take care to avoid the occurrence of residual mechanical stress due to clinching . 45
ligitek electronics co.,ltd. property of ligitek only preheat 60 seconds max 0 0 ' 25 ' 120 ' 50 2 260 ' temp( 100 150 time(sec) 260
this test intended to determine the thermal characteristic resistance of the device to sudden exposures at extreme changes in temperature when soldering the lead wire. 1.t.sol=245 " 5 " 2.dwell time=5 1sec 1.t.sol=260 " 5 " 2.dwell time= 10 1sec. solderability test solder resistance test mil-std-202: 208d mil-std-750: 2026 mil-std-883: 2003 jis c 7021: a-2 mil-std-202: 210a mil-std-750: 2031 jis c 7021: a-1 this test intended to see soldering well performed or not. 1.ta=85
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