LITE-ON ELECTRONICS, INC.
Property of Lite-On Only FEATURES
*2.0 inch (50.8 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.
DESCRIPTION
The LTP-2157AKR is a 2.0 inch (50.8 mm) matrix height 5×7 dot matrix display. This device utilizes AlInGaP Super Red 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. AlInAaP Super Red LTP-2157AKR DESCRIPTION Cathode Column Anode Row
PART NO.: LTP-2157AKR BNS-OD-C131/A4
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only PACKAGE DIMENSIONS
NOTES: All dimensions are in millimeters. Tolerances are ± 0.25 mm (0.01“) unless otherwise noted.
INTERNAL CIRCUIT DIAGRAM
PART NO.: LTP-2157AKR BNS-OD-C131/A4
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only PIN CONNECTION
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CONNECTION ANODE ROW 5 CATHODE ROW 7 ANODE COLUMN 2 ANODE COLUMN 3*1 CATHODE ROW 4*2 ANODE COLUMN 5 ANODE ROW 6 ANODE ROW 3 ANODE ROW 1 CATHODE COLUMN 4 CATHODE COLUMN 3*1 ANODE ROW 4*2 CATHODE COLUMN 1 ANODE ROW 2
NOTES : 1. Pin 4 & 11 are internally connected. 2. Pin 5 & 12 are internally connected.
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only ABSOLUTE MAXIMUM RATING AT Ta=25oC
PARAMETER Average Power Dissipation Per Dot Peak Forward Current Per Dot Average Forward Current Per Dot Derating Linear From 25℃ Per Dot Reverse Voltage Per Dot Operating Temperature Range MAXIMUM RATING 70 90 15 0.2 5 -35℃ to +85℃ UNIT mW mA mA mA/℃ V
-35℃ to +85℃ Storage Temperature Range Solder Temperature: max 260℃ for max 3sec at 1.6mm[1/16inch] below seating plane.
ELECTRICAL / OPTICAL CHARACTERISTICS AT Ta=25oC
PARAMETER Average Luminous Intensity Peak Emission Wavelength Spectral Line Half-Width Dominant Wavelength Forward Voltage any Dot Reverse Current any Dot Luminous Intensity Matching Ratio SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION IV λp ∆λ λd VF IR IV-m 1650 3500 639 20 631 2 2.3 2.6 2.8 100 2:1 µcd nm nm nm V µA Ip=32mA 1/16Duty IF=20mA IF=20mA IF=20mA IF=20mA IF=80mA VR=5V Ip=32mA 1/16Duty
Note: Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (Commision Internationale De L’Eclairage) eye-response curve.
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only TYPICAL ELECTRICAL / OPTICAL CHARACTERISTIC CURVES (25oC Ambient Temperature Unless Otherwise Noted)
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