PCN-1014 Alternate 880nm LED die Reliability Report Projected Lifetime of Infrared LED The Optek Quality Assurance System provides a means to monitor, control and correct product quality on a real-time basis. Each product family that Optek produces is tested extensively prior to manufacturing release for quality and reliability. Optek’s ongoing commitment to quality and product improvement ensures that reliability will be maintained throughout the product’s life cycle. SUMMARY Fifty-eight LED die were assembled in to an OP231 package4. Units completed high temperature operating life without failures. Refer to PCN-1014 notice for affected part numbers. Stress Results Test Samples Test Conditions Total Device Hours Failures 1 High temperature operating life (HTOL) 58 units TA = 70°C, IF = 20 mA 1008 hours 0 Projected Product Life, Operation at 75 mA DC Ambient temperature 60% confidence MTBF 2 90% confidence FIT 3 MTBF 2 FIT 3 (°C) (hours) (per 109 hours) (hours) (per 109 hours) 85 563,338 1,775.1 224,846 4,447.5 75 959,742 1,041.9 383,064 2,610.5 65 1,682,147 594.5 671,399 1,489.4 55 3,040,249 328.9 1,213,461 824.1 45 5,680,877 176.0 2,267,422 441.0 35 11,006,224 90.9 4,392,940 227.6 25 22,181,118 45.1 8,853,201 113.0 Notes: 1. End point failure criteria is defined as an electrical catastrophic failure or if Radiant Power Output (Po) changes greater than 50%. 2. Mean time between failures (MTBF) is the projected number of operating hours before the first failure and between failures. 3. Failure in time (FIT) is the number of failures expected in one billion device hours. 1 FIT = 1 failure per 1,000,000,000 device-hours. 4. OP231 LED is a hermetic TO-46 package was chosen for the product life test to adequately dissipate heat. Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (800) 341-4747 FAX: (972) 323– 2396 [email protected] www.optekinc.com Page 1 of 2 A subsidiary of TT electronics plc Issue 2.0 10.13 PCN-1014 Alternate 880nm LED die Reliability Report Projected Lifetime of Infrared LED Projected Product Life, Operation at 100 mA DC 60% confidence 90% confidence Ambient temperature MTBF (°C) (hours) (per 109 hours) (hours) (per 109 hours) 85 225,190 4,440.7 89,881 11,125.9 75 371,365 2,692.8 148,224 6,746.6 65 628,422 1,591.3 250,823 3,986.9 55 1,093,425 914.6 436,421 2,291.4 45 1,960,647 510.0 782,558 1,277.9 35 3,632,270 275.3 1,449,756 689.8 25 6,971,823 143.4 2,782,680 359.4 2 FIT 3 MTBF 2 FIT3 Projected Product Life, Operation at 125 mA DC 60% confidence 90% confidence Ambient temperature MTBF (°C) (hours) (per 109 hours) (hours) (per 109 hours) 85 79,436 12,588.7 31,706 31,540.1 75 125,766 7,951.3 50,197 19,921.4 65 203,679 4,909.7 81,295 12,300.9 55 338,003 2,958.6 134,908 7,412.5 45 575,845 1,736.6 229,838 4,350.9 35 1,009,288 990.8 402,839 2,482.4 25 1,824,149 548.2 728,077 1,373.5 2 FIT 3 MTBF 2 FIT3 Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (800) 341-4747 FAX: (972) 323– 2396 [email protected] www.optekinc.com Page 2 of 2 A subsidiary of TT electronics plc Issue 2.0 10.13