LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only LED DISPLAY LTP-1557KF DATA SHEET Rev Description PHANOMKORN - ORIGINAL A REVISE MIN IV ON PAGE 4/5 B By APRIL 20,2006 PHANOMKORN NOVEMBER 28,2007 CHANGE THE TEST CONDITION OF AVERAGE LUMINOUS PHANOMKORN INTENSITY ON PAGE 4/5 FROM 1mA TO 20 mA SPEC. NO.: DS30-2006-047 DATE JULY 07,2008 : REV. NO. : PAGE NO. : PART NO.: LTP-1557KF BNS-OD-C131/A4 JULY 07,2008 B 0 OF 5 PAGE: 0 of 5 LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only 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 LED 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 CATHODE COLUMN ANODE ROW LTP-1557KF PART NO.: LTP-1557KF BNS-OD-C131/A4 PAGE: 1 of 5 LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only PACKAGE DIMENSIONS NOTES: 1. All dimensions are in millimeters. Tolerances are ± 0.25 mm unless otherwise note. 2. Pin tip’s shift tolerance is ± 0.4 mm. INTERNAL CIRCUIT DIAGRAM PART NO.: LTP-1557KF BNS-OD-C131/A4 PAGE: 2 of 5 LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only PIN CONNECTION No. 1 ANODE ROW 5 2 ANODE ROW 7 3 CATHODE COLUMN 2 4 CATHODE COLUMN 3 5 6 4 CATHODE COLUMN 5 ANODE ROW 6 8 ANODE ROW 3 9 ANODE ROW 1 10 CATHODE COLUMN 4 11 CATHODE COLUMN 3 13 14 BNS-OD-C131/A4 ANODE ROW 7 12 PART NO.: LTP-1557KF CONNECTION ANODE ROW 4 CATHODE COLUMN 1 ANODE ROW 2 PAGE: 3 of 5 LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only ABSOLUTE MAXIMUM RATING AT Ta=25oC PARAMETER MAXIMUM RATING UNIT Power Dissipation Per Segment 70 mW Peak Forward Current Per Segment (Frequency 1Khz, 10% duty cycle) 60 mA 25 0.28 mA mA/℃ Continuous Forward Current Per Segment Forward Current Derating from 250C Reverse Voltage Per Segment Operating Temperature Range 5 -35℃ to +105℃ Storage Temperature Range -35℃ to +105℃ V Soldering Conditions: 1/16 inch below seating plane for 3 seconds at 2600C or of temperature unit (during assembly) not over max. temperature rating above. ELECTRICAL / OPTICAL CHARACTERISTICS AT Ta=25oC PARAMETER SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION µcd IF=20mA 611 nm IF=20mA ∆λ 17 nm IF=20mA Dominant Wavelength λd 605 nm IF=20mA Forward Voltage Per dot VF 2.05 2.6 V IF=20mA Reverse Current Per dot IR 100 µA VR=5V IV-m 2:1 Average Luminous Intensity IV Peak Emission Wavelength λp Spectral Line Half-Width Luminous Intensity Matching Ratio (Similar Light Area) 55170 99200 IF=20mA Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision Internationale De L’Eclairage) eye-response curve. PART NO.: LTP-1557KF BNS-OD-C131/A4 PAGE: 4 of 5 LITE-ON TECHNOLOGY CORPORATION Property of Lite-On Only TYPICAL ELECTRICAL / OPTICAL CHARACTERISTIC CURVES (25oC Ambient Temperature Unless Otherwise Noted) PART NO.: LTP-1557KF BNS-OD-C131/A4 PAGE: 5 of 5