lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 0 of 5 bns-od-c131/a4 led display LTP-1557KF data sheet rev description by - original phanomkorn april 20,2006 a revise min iv on page 4/5 phanomkorn november 28,2007 b change the test condition of average luminous intensity on page 4/5 from 1ma to 20 ma phanomkorn july 07,200 8 spec . no .: ds30-2006-047 d a t e : july 07,200 8 rev . no . : b page no. : 0 of 5
lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 1 of 5 bns-od-c131/a4 features 1.2 inch (30.42 mm) matrix height. low power requirement. single plane, wide viewing angle. solid state reliability. 5 7 array with x-y select. compatible with usascii and ebcdic codes. stackable horizontally. categorized for luminous intensity. lead-free package(according to rohs) description the LTP-1557KF is a 1.2 inch (30.42 mm) matrix height 5 7 dot matrix displays. this device utilizes alingap yellow orange le d chips which are made from alingap on a non-transparent gaas substrate, and has a gray face and white dot color. device part no. description alingap yellow orange LTP-1557KF cathode column anode row
lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 2 of 5 bns-od-c131/a4 package dimensions notes: 1. all dimensions are in millimeters. tolerances are 0.25 mm unless otherwise note. 2. pin tips shift tolerance is 0.4 mm. internal circuit diagram
lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 3 of 5 bns-od-c131/a4 pin connection no. connection 1 anode row 5 2 anode row 7 3 cathode column 2 4 cathode column 3 5 anode row 4 6 cathode column 5 7 anode row 6 8 anode row 3 9 anode row 1 10 cathode column 4 11 cathode column 3 12 anode row 4 13 cathode column 1 14 anode row 2
lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 4 of 5 bns-od-c131/a4 absolute maximum rating at ta=25 o c parameter maximum rating unit power dissipation per segment 70 mw peak forward current per segment (frequency 1khz, 10% duty cycle) 60 ma continuous forward current per segment forward current derating from 25 0 c 25 0.28 ma ma/ reverse voltage per segment 5 v operating temperature range -35 to +105 storage temperature range -35 to +105 soldering conditions: 1/16 inch below seating plane for 3 seconds at 260 0 c or of temperature unit (during assembly) not over max. temperat ure rating above . electrical / optical characteristics at ta=25 o c parameter symbol min. typ. max. unit test condition average luminous intensity i v 55170 99200 m cd i f =20ma peak emission wavelength l p 611 nm i f =20ma spectral line half-width dl 17 nm i f =20ma dominant wavelength l d 605 nm i f =20ma forward voltage per dot v f 2.05 2.6 v i f =20ma reverse current per dot i r 100 m a v r =5v luminous intensity matching ratio (similar light area) i v -m 2:1 i f =20ma note: luminous intensity is measured with a light sensor and filte r combination that approximates the cie (commision internationale de leclairage) eye-re sponse curve.
lite-on technology corporation property of lite-on only part no.: LTP-1557KF page: 5 of 5 bns-od-c131/a4 typical electrical / optical characteristic curves (25 o c ambient temperature unless otherwise noted)
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