DATA SHEET OLS449: Radiation-Tolerant Phototransistor Hermetic Surface-Mount Optocoupler Features Radiation tolerant version of the 4N49U High current transfer ratio (CTR) is guaranteed: Over 55 C to +125 C ambient temperature range At LED current of 1mA 1000 VDC electrical isolation Same reliable processing and construction as the OLS249, but with a higher CTR High-reliability screenings are available 202470-001 Description Figure 1. OLS449 Block Diagram The OLS449 is specifically designed for high reliability and space applications that require optical isolation in radiation A functional block diagram of the OLS449 is shown in Figure 1. environments such as gamma, neutron, and proton radiation with The absolute maximum ratings of the OLS449 are provided in a high CTR and low saturation VCE. Each optocoupler consists of Table 1. Electrical specifications are provided in Table 2. an LED and N-P-N silicon phototransistor that is electrically isolated, but optically coupled inside a hermetic six-pin Leadless Typical performance characteristics of the OLS449 are illustrated Chip Carrier (LCC) package. in Figures 2 through 4. A typical switching test circuit is shown in Figure 5 and package dimensions for the OLS449 are provided in Electrical parameters are similar to the JEDEC registered 4N49 Figure 6. optocoupler, but with a higher CTR and better CTR degradation characteristics due to radiation exposure. The OLS449 is designed for a low LED operating current while providing excellent radiation tolerance margins. The OLS449 has 100 percent high-reliability screenings available. Phone 408 946-1968 Fax 408 946-1960 hirel.sales skyworksinc.com www.skyworksinc.com 202470E Isolink Proprietary Information Products and Product Information are Subject to Change Without Notice April 13, 2017 1 DATA SHEET OLS449: RADIATION-TOLERANT, PHOTOTRANSISTOR HERMETIC SURFACE-MOUNT OPTOCOUPLER 1 Table 1. OLS449 Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Coupled 2 Input to output isolation voltage VDC 1000 +1000 V Storage temperature range TSTG 65 +150 C Operating temperature range TA 55 +125 C Lead temperature range for 10 sec 240 C Input Diode Average input current IDD 40 mA 3 Peak forward current IF 1 A Reverse voltage VR 2 V Power dissipation PD 70 mW Output Detector Collector to emitter voltage VCE 65 V Emitter to base voltage VEB 7 V Collector to base voltage VCB 65 V Continuous collector current ICC 50 mA 4 Power dissipation PD 300 mW 1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. 2 Measured between pins 1, 2, and 6 shorted together, and pins 3, 4, and 5 shorted together. TA = 25 C and duration = 1 s. 3 Value applies for Pw 1 s, PRR 300 pps. 4 Derate linearly at 3 mW/C above 25 C. ESD HANDLING: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD handling precautions should be used at all times. Phone 408 946-1968 Fax 408 946-1960 hirel.sales skyworksinc.com www.skyworksinc.com 2 April 13, 2017 Isolink Proprietary Information Products and Product Information are Subject to Change Without Notice 202470E