doc. no : qw0905-ldbk9253-1/s5 rev. : a date : 30 - apr. - 2014 data sheet ldbk9253-1/s5 ligitek electronics co.,ltd. property of ligitek only axial type led lamps pb lead-free parts l dcc
directivity radiation note : 1.all dimension are in millimeter tolerance is ?? part no. ldbk9253-1/s5page 1/6 ligitek electronics co.,ltd. property of ligitek only 7.62 1.65 0.25 typ 5.5
v 150 esd electrostatic discharge( * ) emitted note : 1.the forward voltage data did not including 0.1v testing tolerance. 2. the luminous intensity data did not including 15% testing tolerance. typical electrical & optical characteristics (ta=25 " ) absolute maximum ratings at ta=25 " reverse current @5v ldbk9253-1/s5 part no ingan material storage temperature operating temperature power dissipation peak forward current duty 1/10@10khz forward current parameter # a 50 ir forward voltage @ ma(v) spectral halfwidth $% nm dominant wave length % dnm luminous intensity @20ma(mcd) viewing angle 2 & 1/2 (deg) min. 50 lens water clear 470 color typ. max. 3.5 304.0 20 typ. 100 125 tstg t opr -30 ~ +100 -20 ~ +80 " " pd i fp 120 100 i f symbol 30 ratings mw ma ma unit ligitek electronics co.,ltd. property of ligitek only page2/6 part no. ldbk9253-1/s5 dbk blue
fig.5 relative intensity vs. wavelength wavelength (nm) r e l a t i v e i n t e n s i t y @ 2 0 m a part no. ldbk9253-1/s5 dbk chip typical electro-optical characteristics curve ligitek electronics co.,ltd. property of ligitek only r e l a t i v e i n t e n s i t y n o r m a l i z e @ 2 0 m a fig.2 relative intensity vs. forward current forward current(ma) page 3/6 f o r w a r d c u r r e n t ( m a ) fig.1 forward current vs. forward voltage forward voltage(v) r e l a t i v e i n t e n s i t y @ 2 0 m a n o r m a l i z e @ 2 5 R R
temp. ( Q
drive method: led is a current operated device, and therefore, requirer 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. 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. (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 5/6 precautions for use: storage time: 1.the operation of temperatures and rh are : 5 R
solderability test environmental test temperature cycling solderability test thermal shock test solder resistance test high temperature high humidity storage test ramp-up rate(183 R R R ? RR R
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