Solicon DRC Series - Solid State Contactors RELIABILITY PREDICTION ALD Document Number: _________________ Revision: 01 Customer Document Number: _____________ Revision: 00 Issue Date: June 03, 2014 Exhibiting this document in full or in part, to any person or party is prohibited. Making copies in any way or form or using it or allowing others to use is prohibited without the explicit consent, verbally or in writing, of ALD Ltd or by our customer. Prepared by ALD for Crydom Crydom Contact Persons: ________________ NAME SIGNATURE DATE Prepared Reuven Kayumov 06/03/2014 Checked Alex Vainshtein 06/03/2014 Last Revised Approved 52 Menachem Begin Str., Tel Aviv, 67137 ISRAEL Phone: (972) 3-791-3200 Fax: (972) 3-791-3210 Web: www.aldservice.com CONTENTS 1. 2. GENERAL ................................................................................................................... 3 1.1. Introduction......................................................................................................................................... 3 1.2. Abbreviations and Definitions ........................................................................................................... 3 RELIABILITY PREDICTION SUMMARY .............................................................. 3 2.1. Reliability prediction Summary ........................................................................................................ 3 2.2. General Assumptions .......................................................................................................................... 3 2.3. MTBF Calculation Model .................................................................................................................. 4 3. APPENDICES CONTENTS ........................................................................................ 4 4. REFERENCES............................................................................................................. 4 5. APPENDIX A TEMPERATURE CURVES .............................................................. 5 List of Tables TABLE 1: MTBF CALCULATION SUMMARY RESULTS FOR SOLICON DRC SERIES - SOLID STATE CONTACTORS.................................................................................................................................. 3 TABLE 2: APPLICABLE DOCUMENTS LIST ................................................................................................ 4 2 1. GENERAL 1.1. Introduction This document presents the reliability prediction of Solicon DRC Series - Solid State Contactors. The reliability prediction was performed, using A.L.D. Ltd. software - RAM Commander, version 8.3 SP3. 1.2. Abbreviations and Definitions MTBF - Mean Time Between Failures 9 - Failures per 10 hours λ FIT - Failure In Time (when Time = 109 hours) GF - Ground, Fixed N/A - Not Applicable 2. Qty - Quantity FR - Failure Rate RefDes - Reference Designator IAW - In Accordance With RELIABILITY PREDICTION SUMMARY 2.1. Reliability prediction Summary The reliability prediction results of the Solicon DRC Series - Solid State Contactors are presented in Table 2-1: Table 1 MTBF calculation summary Results for Solicon DRC Series - Solid State Contactors Prediction Method Telcordia Reliability Prediction Procedure for Electronic Equipment, SR-332, Issue 6 Environment GF Ambient Temperature 40°C Product λ [FIT] MTBF [hours] DRC3R48D420 715.16 1,398,288 DRC3R40A400 541.16 1,847,882 DRC3P48D411R2 518.6 1,928,268 DRC3P48B400 234.6 4,262,575 2.2. General Assumptions • Failure rates of components are constant during equipment life period. • The failures of different components are considered statistically independent. • The assembly reliability model is a series one - failure in any component causes an 3 assembly failure. • Only hardware failures were taken into consideration in the reliability prediction. 2.3. MTBF Calculation Model The formula for module/card MTBF calculation is: n λ = ∑λi MTBF = i =1 3. 1 λ Where: λ i = failure rate of i’th item n = number of items APPENDICES CONTENTS APPENDIX A TEMPERATURE CURVES- This Appendix describes the effect of the temperature rise on the equipment failure rate. 4. REFERENCES Table 2 Applicable Documents List Ref # Document Name Document Description Telcordia Reliability Prediction Procedure for Electronic Equipment SR-332, Issue 6 2 DRC3P48B400.xlsx BOM of DRC3P48B400 3 DRC3P48D411R2.xlsx BOM of DRC3P48D411R2 4 DRC3R40A400.xlsx BOM of DRC3R40A400 5 DRC3R48D420.xlsx BOM of DRC3R48D420 6 CRYDOM_DRC.RMW RAM Commander file 1 4 5. APPENDIX A TEMPERATURE CURVES Project name: CRYDOM_DRC MTBF [hours] table: T(°C) DRC3R48D420 DRC3R40A400 DRC3P48D411R2 DRC3P48B400 0 12 24 36 48 60 9,488,929 6,094,659 3,488,908 1,782,612 845,619 390,646 10,458,922 6,970,402 4,224,773 2,306,325 1,161,385 561,721 5 7,380,828 5,035,751 3,409,962 2,241,364 1,399,235 820,778 20,268,593 14,057,725 9,063,116 5,244,689 2,728,720 1,326,023 6