WE Standard: WES_FIT - Reliability Data

Transcription

1 WE Standard: Date of Issue: Actual Revision: 1.17 Issued by: Christin Otto

2 FIT - Reliability Data page 1 of 31 Table of Content 1 Document Control General Information Determination of FIT values Matchcode Mappings to Tables EMC Components (1) EMC Components (2) Power Magnetics Signal & Communication Opto-Electronic Parts Capacitors λ Tables Table λ-values Table λ-values Table λ-values Table λ-values Table λ-values Table λ-values Table λ-values σ Tables Table σ-values Table σ-values Table σ-values Table σ-values Table σ-values Table σ-values Table σ-values Upper Confidence Level Calculation Example: FIT-Calculation for WE PD2 with 90% UCL FAQ What is the Failure Rate λ? What is FIT? What is MTBF? How do I convert the Fit values to MTBF or the other way around?... 31

3 FIT - Reliability Data page 2 of 31 1 Document Control No Page Change Description Issued by Date 1 all Change previous WE_FIT - paper to WES_FIT MBar ,5 Add series WE-CMBNC MBar Add Capacitors (Chaptor 4.6), Restructure Curves MBar Add series WE-MAPI MBar Add series WE-ZB MBar Add series WE-GDTI MBar Change series WE-RJ45 into WE-RJ45 LAN MBar Add series WE-MAIA, WE-PDA MBar , Add Series WE-XHMI, WE-TVSP, WE-PMMI, WE- PMCI, WE-TIF Add series WE-UCF, WE-ExB, WE-FCL, WE-GFH, WE-FAMI, WE-PoEH, WE-LLCR, WE-CAIR Update the text of chapter 3.1 Update the temperature of chapter 8.b COt COt Cot Change part description HaK Add series WCAP-CSMH, WCAP-FTBE, WCAP- FTBP, WL-SBRW, WL-SBSW, WL-SFCD, WL- SFCW, WL-SFRW, WL-SFSW, WL-TIRW, WL- SIMW, WL-SUMW, WE-LQSH, WE-LQFS, WE-KIHC, WE-PD2SA COt Add series WL-SBCW, WE-LAN AQ, WE-PDeco, WE-HCLW COt

4 FIT - Reliability Data page 3 of 31

5 FIT - Reliability Data page 4 of 31 2 General Information Through this document Würth Electronics provides FIT data for parts of our portfolio. The FIT data is shown for each Matchcodes of a product family. The Matchcode for a specific product is stated in the specifications of each product. The provided reliability values are based on the calculation Models of Telcordia SR-332 Issue 3 All given FIT values are based on an operating time of 10 9 hours. WE provides the following values: - FIT λ : Mean Device Failure Rate - FIT σ: Standard Deviation of Failure Rate As you can see in the curves within the tables 1-9 and the example in Chapter Example: FIT- Calculation for WE PD2 with 90% UCL, the increase of temperature directly influences the initial FIT data (λ /σ). Please keep in mind that the usage of a component in a higher operating temperature will increase the FIT values and may shorten the effective product life. Through this the design of your application and the related operating temperature will have a direct influence on the reliability of the used components. So directly during the design stage the base factors for later product / module reliabilities are being set. 3 Determination of FIT values If you need a FIT value for a specific product, then please follow the procedure described below: 1. Select your Matchcode: The Matchcode is shown in the specifications of a product. Use the tables in Chapter 4 to find your Matchcode. 2. Within the rows you can find in the columns FIT λ and FIT σ the table (numeralized) and the curve (nouns) where you can look up the desired FIT λ and FIT σ values. 3. Go to the specified table and read the desired values at the operating temperature of your application. WARNING: The maximum allowed operating temperate can be less than 125 C. Please check the specific Data Sheet. For each product the maximum operating temperature given in the datasheet is obligatory.

6 FIT - Reliability Data page 5 of 31 4 Matchcode Mappings to Tables 4.1 EMC Components (1) FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WE-CBA Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-CBF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-CBF HF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-CMB Coil, Power Filter 5.1 B 6.1 O WE-CMB HC Coil, Power Filter 5.1 B 6.1 O WE-CMB NiZn Coil, Power Filter 5.1 B 6.1 O WE-CMBH Coil, Power Filter 5.1 B 6.1 O WE-CMBNC Coil, Power Filter 5.1 B 6.1 O WE-CMS Coil, Ferrite Beads 5.1 C 6.1 O WE-CNSW Coil, Power Filter 5.1 B 6.1 O WE-CNSW HF Coil, Power Filter 5.1 B 6.1 O WE-ExB Coil, Power Filter 5.1 B 6.1 O WE-FC Coil, Power Filter 5.1 B 6.1 O WE-FCL Coil, Power Filter 5.1 B 6.1 O WE-FI Coil, Power Filter 5.1 B 6.1 O WE-LF Coil, Power Filter 5.1 B 6.1 O WE-LF SMD Coil, Power Filter 5.1 B 6.1 O WE-MI Coil, Ferrite Beads 5.1 C 6.1 O WE-MLS Coil, Ferrite Beads 5.1 C 6.1 O WE-MPSB Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-PBF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-PF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-SCC Coil, Power Filter 5.1 B 6.1 O WE-SD Coil, Power Filter 5.1 B 6.1 O WE-SL Coil, Power Filter 5.1 B 6.1 O WE-SL1 Coil, Power Filter 5.1 B 6.1 O WE-SL2 Coil, Power Filter 5.1 B 6.1 O WE-SL3 Coil, Power Filter 5.1 B 6.1 O WE-SL5 Coil, Power Filter 5.1 B 6.1 O WE-SL5 HC Coil, Power Filter 5.1 B 6.1 O WE-SLM Coil, Power Filter 5.1 B 6.1 O WE-SUKW Coil, Ferrite Beads 5.1 C 6.1 O

7 FIT - Reliability Data page 6 of 31 FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WE-TFC Coil, Power Filter 5.1 B 6.1 O WE-TFCH Coil, Power Filter 5.1 B 6.1 O WE-TMSB Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-UKW Coil, Ferrite Beads 5.1 C 6.1 O WE-UCF Coil, Power Filter 5.1 B 6.1 O WE-WAFB Coil, Ferrite Beads 5.1 C 6.1 O WE-ZB Coil, Power Filter 5.1 B 6.1 O 4.2 EMC Components (2) Matchcode WE-TVS Standard WE-TVS High Speed WE-TVS Super Speed WE-TVSP WE-VE WE-VE ULC WE-VEA WE-VS WE-VD Product Category Voltage Regulator, < 1.5 W Voltage Regulator, < 1.5 W Voltage Regulator, < 1.5 W Voltage Regulator, < 1.5 W Varistor, Metal Oxide Varistor, Metal Oxide Varistor, Metal Oxide Varistor, Metal Oxide Varistor, Metal Oxide Electrical Stress FIT - λ FIT - σ Table Curve Table Curve 50% 5.1 A 6.2 S 100% 5.2 F 6.2 R 50% 5.1 A 6.2 S 100% 5.2 F 6.2 R 50% 5.1 A 6.2 S 100% 5.2 F 6.2 R 50% 5.1 A 6.2 S 100% 5.2 F 6.2 R 50% 5.2 E 6.2 Q 100% 5.2 D 6.2 P 50% 5.2 E 6.2 Q 100% 5.2 D 6.2 P 50% 5.2 E 6.2 Q 100% 5.2 D 6.2 P 50% 5.2 E 6.2 Q 100% 5.2 D 6.2 P 50% 5.2 E 6.2 Q 100% 5.2 D 6.2 P

8 FIT - Reliability Data page 7 of Power Magnetics FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WE-CFWI Coil, Load Coil 5.1 A 6.1 N WE-CST Transformer, Pulse Low Level 5.2 F 6.3 T WE-DCT Coil, Load Coil 5.1 A 6.1 N WE-DD Coil, Load Coil 5.1 A 6.1 N WE-EHPI Coil, Load Coil 5.1 A 6.1 N WE-FB Transformer, Power (> 1W) 5.3 G 6.3 U WE-FB3751 Transformer, Power (> 1W) 5.3 G 6.3 U WE-FLEX Transformer, Power (> 1W) 5.3 G 6.3 U WE-FLEX+ Transformer, Power (> 1W) 5.3 G 6.3 U WE-GDT Transformer, Pulse Low Level 5.2 F 6.3 T WE-GDTI Transformer, Pulse Low Level 5.2 F 6.3 T WE-FAMI Coil, Load Coil 5.1 A 6.1 N WE-GF Coil, Load Coil 5.1 A 6.1 N WE-GFH Coil, Load Coil 5.1 A 6.1 N WE-HCC Coil, Load Coil 5.1 A 6.1 N WE-HCF Coil, Load Coil 5.1 A 6.1 N WE-HCI Coil, Load Coil 5.1 A 6.1 N WE-HCLW Coil, Load Coil 5.1 A 6.1 N WE-HCM Coil, Load Coil 5.1 A 6.1 N WE-LHMI Coil, Load Coil 5.1 A 6.1 N WE-LQ Coil, Load Coil 5.1 A 6.1 N WE-LQFS Coil, Load Coil 5.1 A 6.1 N WE-LQS Coil, Load Coil 5.1 A 6.1 N WE-LQSH Coil, Load Coil 5.1 A 6.1 N WE-LLCR Transformer, Power (> 1W) 5.3 G 6.3 U WE-MAIA Coil, Load Coil 5.1 A 6.1 N WE-MAPI Coil, Load Coil 5.1 A 6.1 N WE-PD Coil, Load Coil 5.1 A 6.1 N WE-PD HV Coil, Load Coil 5.1 A 6.1 N WE-PD2 Coil, Load Coil 5.1 A 6.1 N WE-PDeco Coil, Load Coil 5.1 A 6.1 N WE-PD2 HV Coil, Load Coil 5.1 A 6.1 N WE-PD2A Coil, Load Coil 5.1 A 6.1 N

9 FIT - Reliability Data page 8 of 31 FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WE-PD2SA Coil, Load Coil 5.1 A 6.1 N WE-PD2SR Coil, Load Coil 5.1 A 6.1 N WE-PD3 Coil, Load Coil 5.1 A 6.1 N WE-PD4 Coil, Load Coil 5.1 A 6.1 N WE-PDA Coil, Load Coil 5.1 A 6.1 N WE-PDF Coil, Load Coil 5.1 A 6.1 N WE-PFC Coil, Load Coil 5.1 A 6.1 N WE-PMCI Coil, Load Coil 5.1 A 6.1 N WE-PMI Coil, Load Coil 5.1 A 6.1 N WE-PMMI Coil, Load Coil 5.1 A 6.1 N WE-PoE Transformer, Power (> 1W) 5.3 G 6.3 U WE-PoE+ Transformer, Power (> 1W) 5.3 G 6.3 U WE-PoEH Transformer, Power (> 1W) 5.3 G 6.3 U WE-SI Coil, Load Coil 5.1 A 6.1 N WE-SPC Coil, Load Coil 5.1 A 6.1 N WE-TDC Coil, Load Coil 5.1 A 6.1 N WE-TI Coil, Load Coil 5.1 A 6.1 N WE-TI HV Coil, Load Coil 5.1 A 6.1 N WE-TIF Coil, Load Coil 5.1 A 6.1 N WE-TIS Coil, Load Coil 5.1 A 6.1 N WE-TPC Coil, Load Coil 5.1 A 6.1 N WE-Unit Transformer, Power (> 1W) 5.3 G 6.3 U WE-UOST Transformer, Power (> 1W) 5.3 G 6.3 U WE-WPCC Coil, Load Coil 5.1 A 6.1 N WE-XHMI Coil, Load Coil 5.1 A 6.1 N

10 FIT - Reliability Data page 9 of Signal & Communication FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WE-ASI Coil, Load Coil 5.1 A 6.1 N WE-BAL Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-BPF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-CAIR Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-KI Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-KI HC Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-LAN Transformer, Radio Frequency 5.3 H 6.3 V WE-LAN AQ Transformer, Radio Frequency 5.3 H 6.3 V WE-LPF Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-MCA Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-MK Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-RFH Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-RFI Coil, Chip/Ceramic Filter 5.1 C 6.1 O WE-RJ45 LAN Transformer, Radio Frequency 5.3 H 6.3 V WE-TCI Coil, Chip/Ceramic Filter 5.1 C 6.1 O

11 FIT - Reliability Data page 10 of Opto-Electronic Parts FIT - λ FIT - σ Matchcode Product Category Table Curve Table Curve WL-SBCW Single LED / LCD Segment 5.4 I 6.4 W WL-SBRW Single LED / LCD Segment 5.4 I 6.4 W WL-SBSW Single LED / LCD Segment 5.4 I 6.4 W WL-SBTW Single LED / LCD Segment 5.4 I 6.4 W WL-SFCD Single LED / LCD Segment 5.4 I 6.4 W WL-SFCW Single LED / LCD Segment 5.4 I 6.4 W WL-SFRW Single LED / LCD Segment 5.4 I 6.4 W WL-SFSW Single LED / LCD Segment 5.4 I 6.4 W WL-SFTW Single LED / LCD Segment 5.4 I 6.4 W WL-SIMW Single LED / LCD Segment 5.4 I 6.4 W WL-SMCW Single LED / LCD Segment 5.4 I 6.4 W WL-SMRW Single LED / LCD Segment 5.4 I 6.4 W WL-SMSW Single LED / LCD Segment 5.4 I 6.4 W WL-SMTW Single LED / LCD Segment 5.4 I 6.4 W WL-SUMW Single LED / LCD Segment 5.4 I 6.4 W WL-SWTC Single LED / LCD Segment 5.4 I 6.4 W WL-SWTP Single LED / LCD Segment 5.4 I 6.4 W WL-TIRW Single LED / LCD Segment 5.4 I 6.4 W WL-TMRC Single LED / LCD Segment 5.4 I 6.4 W WL-TMRW Single LED / LCD Segment 5.4 I 6.4 W

12 FIT - Reliability Data page 11 of Capacitors FIT - λ FIT - σ Matchcode Product Category Electrical Stress Table Curve Table Curve WCAP-FTX2 Fixed, Plastic 30% 5.5 J 6.5 X 50% 5.5 K 6.5 Y 70% 5.5 L 6.5 Z 100% 5.5 M 6.5 a WCAP-FTXX Fixed, Plastic 30% 5.5 J 6.5 X 50% 5.5 K 6.5 Y 70% 5.5 L 6.5 Z 100% 5.5 M 6.5 a WCAP-FTBE Fixed, Plastic 30% 5.5 J 6.5 X 50% 5.5 K 6.5 Y 70% 5.5 L 6.5 Z 100% 5.5 M 6.5 a WCAP-FTBP Fixed, Plastic 30% 5.5 J 6.5 X WCAP-AS5H WCAP-ASLI WCAP-ASLL WCAP-ASNP 50% 5.5 K 6.5 Y 70% 5.5 L 6.5 Z 100% 5.5 M 6.5 a

13 FIT - Reliability Data page 12 of 31 Matchcode WCAP-ASLUASLU WCAP-AT1H WCAP-ATG5 WCAP-ATG8 WCAP-ATET WCAP-ATLI WCAP-ATUL WCAP-AI3H FIT - λ FIT - σ Product Category Electrical Stress Table Curve Table Curve

14 FIT - Reliability Data page 13 of 31 Matchcode WCAP-AIG5 WCAP-AIG8 WCAP-AIE8 WCAP-AIL5 WCAP-AIL8 WCAP-PSHP WCAP-PSLC WCAP-PSLP FIT - λ FIT - σ Product Category Electrical Stress Table Curve Table Curve

15 FIT - Reliability Data page 14 of 31 Matchcode WCAP-PT5H WCAP-PTG5 WCAP-PTHR WCAP-PTHT FIT - λ FIT - σ Product Category Electrical Stress Table Curve Table Curve WCAP-CSSA Fixed, Ceramic 30% 5.7 f 6.7 n 50% 5.7 g 6.7 o 70% 5.7 h 6.7 p 100% 5.7 i 6.7 q WCAP-CSGP Fixed, Ceramic 30% 5.7 f 6.7 n 50% 5.7 g 6.7 o 70% 5.7 h 6.7 p 100% 5.7 i 6.7 q WCAP-CSMH Fixed, Ceramic 30% 5.7 f 6.7 n 50% 5.7 g 6.7 o 70% 5.7 h 6.7 p 100% 5.7 i 6.7 q

16 FIT - Reliability Data page 15 of 31 5 λ Tables 5.1 Table λ-values 3,0 2,5 2,0 FIT -λ 1,5 1,0 A B C 0,5 0, Operating Temperature [ C ]

17 FIT - Reliability Data page 16 of Table λ-values 34,0 32,0 30,0 28,0 26,0 24,0 22,0 20,0 FIT -λ 18,0 16,0 14,0 12,0 D E F 10,0 8,0 6,0 4,0 2,0 0, Operating Temperature [ C ]

18 FIT - Reliability Data page 17 of Table λ-values 40,0 35,0 30,0 25,0 FIT -λ 20,0 15,0 G H 10,0 5,0 0, Operating Temperature [ C ]

19 FIT - Reliability Data page 18 of Table λ-values 65,0 60,0 55,0 50,0 45,0 40,0 FIT -λ 35,0 30,0 25,0 20,0 15,0 10,0 5,0 I 0, Operating Temperature [ C ]

20 FIT - Reliability Data page 19 of Table λ-values

21 FIT - Reliability Data page 20 of Table λ-values

22 FIT - Reliability Data page 21 of Table λ-values

23 FIT - Reliability Data page 22 of 31 6 σ Tables 6.1 Table σ-values 1,0 0,9 0,8 0,7 0,6 FIT -σ 0,5 0,4 N O 0,3 0,2 0,1 0, Operating Temperature [ C ]

24 FIT - Reliability Data page 23 of Table σ-values FIT -σ 23,0 22,0 21,0 20,0 19,0 18,0 17,0 16,0 15,0 14,0 13,0 12,0 11,0 10,0 9,0 8,0 7,0 6,0 5,0 4,0 3,0 2,0 1,0 0,0 P Q R S Operating Temperature [ C ]

25 FIT - Reliability Data page 24 of Table σ-values 13,0 12,0 11,0 10,0 9,0 8,0 FIT -σ 7,0 6,0 5,0 4,0 3,0 2,0 1,0 T U V 0, Operating Temperature [ C ]

26 FIT - Reliability Data page 25 of Table σ-values FIT -σ 46,0 44,0 42,0 40,0 38,0 36,0 34,0 32,0 30,0 28,0 26,0 24,0 22,0 20,0 18,0 16,0 14,0 12,0 10,0 8,0 6,0 4,0 2,0 0,0 W Operating Temperature [ C ]

27 FIT - Reliability Data page 26 of Table σ-values

28 FIT - Reliability Data page 27 of Table σ-values

29 FIT - Reliability Data page 28 of Table σ-values

30 FIT - Reliability Data page 29 of 31 7 Upper Confidence Level Calculation Based on the Telcordia SR-332 Issue 3 estimations and by assuming that the failure rate follows a gamma distribution the UCL (Upper Confidence Level) can be calculated with given mean λ and standard deviation σ like following: shape κ=(λ σ)² scale θ=σ² λ The UCL is the P% quantile of the gamma distribution and can be calculated by the inverse cumulative gamma distribution with the shape κ and scale θ parameters as following: λ % =G (P 100;κ; θ) If the shape parameter is >100 the UCL can also be calculated by using the P% quantile of the normal distribution, by inverse cumulative distribution of normal distribution with mean λ and standard deviation σ: λ % =N (P 100;λ; σ)

31 FIT - Reliability Data page 30 of 31 8 Example: FIT-Calculation for WE PD2 with 90% UCL a) 20 C operating temperature Values according to tables: λ= 0,75 FIT / σ= 0,25 FIT shape κ=(0,75 0,25) =9 scale θ=0,25² 0,75=0, FITs λ % =G (90 100; 9; 0,083333)=1,08 FITs The FIT for a WE-PD2 and an UCL of 90% would be 1,08 FITs at 20 C operating temperature. In Microsoft Excel this can could be solved with following formulas: European Version: American Version: =GAMMAINV(0,9;9;0,083333) =GAMMAINV(0.9,9, ) b) 60 C operating temperature Values according to tables: λ= 1,26 FIT / σ= 0,42 FIT shape κ=(1,26 0,42) =9 scale θ=0,42² 1,26=0,14 FITs λ % =G (90 100; 9; 0,14)=1,82 FITs The FIT for a WE-PD2 and an UCL of 90% would be 1,82 FITs at 60 C operating temperature. In Microsoft Excel this can be solved with following formulas: European Version: American Version: =GAMMAINV(0,9;9;0,14) =GAMMAINV(0.9,9,0.14)

32 FIT - Reliability Data page 31 of 31 9 FAQ What is the Failure Rate λ? The Failute Rate λ describes the failure performance of a product throughout the test or product life cycle. FIT and MTBF are figures to describe the failure rate and these are used for reliability / availability calculations What is FIT? A FIT value describes the Failures in Time and is a key figure for the reliability of a product. The FIT value describes the number of predicted failures / defects for an operating time of 10 9 h / years What is MTBF? MTBF is the short term for Meantime Between Failures and is defined as expected value of the failure free time between two defects /failures How do I convert the Fit values to MTBF or the other way around? Due to the fact that MTBF and FIT are just 2 different kinds to describe a failure rate they can be converted by the formula given below: = 10 h Remark: The FIT reliability data provided within this document are predictions and will not be guaranteed by WE. Due to a big variance of possible mission profiles and applications WE does not provide FIT data for Connectors or Modules.