Low Cost Axial Vactrols VTL5C3, 5C4 PACKAGE DIMENSIONS INCH (MM) PLASTIC POTTING CONTOUR NOT CONTROLLED DESCRIPTION VTL5C3 has a steep slope, good dynamic range, a very low temperature coefficient of resistance, and a small light history memory. VTL5C4 features a very low on resistance, fast response time, with a smaller temperature coefficient of resistance than VTL5C1. ABSOLUTE MAXIMUM RATINGS 25C LED Forward Voltage Drop 20 mA: 2.0V (1.65V Typ.) Maximum Temperatures Storage and Operating: 40C to 75C Min. Isolation Voltage 70% Rel. Humidity: 2500 VRMS Cell Power: 175 mW Derate above 30C: 3.9 mW/C Output Cell Capacitance: 5.0 pF 1 LED Current: 40 mA Derate above 30C: 0.9 mA/C Cell Voltage: 250V (VTL5C3), 50V (VTL5C4) LED Reverse Breakdown Voltage: 3.0 V Input - Output Coupling Capacitance: 0.5 pF ELECTRO-OPTICAL CHARCTERISTICS 25C ON Resistance 2 Dynamic Range Response Time 4 Slope OFF 3 (Typ.) (Typ.) Part Material Dark Turn-on to Turn-off (Decay) Resistance Number Type R Input current Adapted R 0.5 mA 63% Final R to 100 k 10 sec. (Min.) DARK ON ------------------------- ------------------------ (Typ.) (Typ.) (Max.) R 5 mA R 20 mA 1 mA 30 k VTL5C3 3 10 mA 5 10 M 20 75 db 2.5 ms 35 ms 40 mA 1.5 1 mA 1.2 k VTL5C4 4 10 mA 125 400 M 18.7 72 db 6.0 ms 1.5 sec 40 mA 75 Refer to Specification Notes, page 41. Excelitas Technologies, 10900 Page Ave., St. Louis, MO 63132 USA Phone: 314-423-4900 Fax: 314-423-3956 Web: www.excelitas.com 45Typical Performance Curves Output Resistance vs. Input Current Response Time VTL5C3 VTL5C3 Output Resistance vs. Input Current Response Time VTL5C4 VTL5C4 Input Characteristics Notes: 1. At 1.0 mA and below, units may have substantially higher resistance than shown in the typical curves. Consult factory if closely controlled characteristics are required at low input currents. 2. Output resistance vs input current transfer curves are given for the following light adapt conditions: (1) 25C 24 hours no input (2) 25C 24 hours 40 mA input (3) +50C 24 hours 40 mA input (4) 20C 24 hours 40 mA input 3. Response time characteristics are based upon test following adapt condition (2) above. Excelitas Technologies, 10900 Page Ave., St. Louis, MO 63132 USA Phone: 314-423-4900 Fax: 314-423-3956 Web: www.excelitas.com 46