05/27/2004 RELIABILITY REPORT FOR DS1204, Rev F1 Dallas Semiconductor 4401 South Beltwood Parkway Dallas, TX 75244-3292 Prepared by: Ken Wendel Reliability Engineering Manager Dallas Semiconductor 4401 South Beltwood Pkwy. Dallas, TX 75244-3292 Email : [email protected] ph: 972-371-3726 fax: 972-371-6016 mbl: 214-435-6610 Conclusion: The following qualification successfully meets the quality and reliability standards required of all Dallas Semiconductor products and processes: DS1204, Rev F1 In addition, Dallas Semiconductor's continuous reliability monitor program ensures that all outgoing product will continue to meet Maxim's quality and reliability standards. The current status of the reliability monitor program can be viewed at http://www.maxim-ic.com/TechSupport /dsreliability.html. Device Description: A description of this device can be found in the product data sheet. You can find the product data sheet at http://dbserv.maxim-ic.com/l_datasheet3.cfm. Reliability Derating: The Arrhenius model will be used to determine the acceleration factor for failure mechanisms that are temperature accelerated. AfT = exp((Ea/k)*(1/Tu - 1/Ts)) = tu/ts AfT = Acceleration factor due to Temperature tu = Time at use temperature (e.g. 55°C) ts = Time at stress temperature (e.g. 125°C) k = Boltzmann’s Constant (8.617 x 10-5 eV/°K) Tu = Temperature at Use (°K) Ts = Temperature at Stress (°K) Ea = Activation Energy (e.g. 0.7 ev) The activation energy of the failure mechanism is derived from either internal studies or industry accepted standards, or activation energy of 0.7ev will be used whenever actual failure mechanisms or their activation energies are unknown. All deratings will be done from the stress ambient temperature to the use ambient temperature. An exponential model will be used to determine the acceleration factor for failure mechanisms, which are voltage accelerated. AfV = exp(B*(Vs - Vu)) AfV = Acceleration factor due to Voltage Vs = Stress Voltage (e.g. 7.0 volts) Vu = Maximum Operating Voltage (e.g. 5.5 volts) B = Constant related to failure mechanism type (e.g. 1.0, 2.4, 2.7, etc.) The Constant, B, related to the failure mechanism is derived from either internal studies or industry accepted standards, or a B of 1.0 will be used whenever actual failure mechanisms or their B are unknown. All deratings will be done from the stress voltage to the maximum operating voltage. Failure rate data from the operating life test is reported using a Chi-Squared statistical model at the 60% or 90% confidence level (Cf). The failure rate, Fr, is related to the acceleration during life test by: Fr = X/(ts * AfV * AfT * N * 2) X = Chi-Sq statistical upper limit N = Life test sample size Failure Rates are reported in FITs (Failures in Time) or MTTF (Mean Time To Failure). The FIT rate is related to MTTF by: MTTF = 1/Fr NOTE: MTTF is frequently used interchangeably with MTBF. The calculated failure rate for this device/process is: FAILURE RATE: MTTF (YRS): 245656 FITS: 0.5 The parameters used to calculate this failure rate are as follows: Cf: 60% Ea: 0.7 B: 0 Tu: 25 °C Vu: 5.5 Volts The reliability data follows. A the start of this data is the device information. The next section is the detailed reliability data for each stress. The reliability data section includes the latest data available and may contain some generic data. Device Information: Process: Passivation: Die Size: Number of Transistors: Interconnect: Gate Oxide Thickness: 1P, 1M, 2.0um, Pfield , WJ BPSG Passivation w/Nitride 100 x 82 Unknown Aluminum / 1% Silicon / 0.5% Copper 250 Å , OPERATING LIFE DESCRIPTION DATE CODE CONDITION READPOINT QUANTITY INFANT LIFE 9435 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9435 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9452 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9452 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9504 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9504 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9522 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9522 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9527 125C, 7.0 VOLTS 48 HRS 315 0 HIGH TEMP OP LIFE 9527 125C, 5.5 VOLTS 1000 HRS 116 0 HIGH VOLTAGE LIFE 9527 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9531 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9531 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9544 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9544 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9552 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9552 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9619 125C, 7.0 VOLTS 48 231 0 HRS FAILS HIGH VOLTAGE LIFE 9619 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9643 125C, 7.0 VOLTS 48 HRS 229 0 HIGH VOLTAGE LIFE 9643 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9712 125C, 7.0 VOLTS 48 HRS 231 0 HIGH VOLTAGE LIFE 9712 125C, 7.0 VOLTS 1000 HRS 77 0 HIGH VOLTAGE LIFE 9722 125C, 7.0 VOLTS 1000 HRS 153 0 INFANT LIFE 9745 125C, 7.0 VOLTS 48 HRS 234 0 HIGH VOLTAGE LIFE 9745 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9811 125C, 7.0 VOLTS 48 HRS 234 0 HIGH VOLTAGE LIFE 9811 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 9838 125C, 7.0 VOLTS 48 HRS 234 0 HIGH VOLTAGE LIFE 9838 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 0001 125C, 7.0 VOLTS 48 HRS 234 0 HIGH VOLTAGE LIFE 0001 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 0016 125C, 7.0 VOLTS 48 HRS 237 0 HIGH VOLTAGE LIFE 0016 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 0042 125C, 7.0 VOLTS 48 HRS 234 0 HIGH VOLTAGE LIFE 0042 125C, 7.0 VOLTS 1000 HRS 77 0 INFANT LIFE 0046 125C, 7.0 VOLTS 48 HRS 233 0 HIGH VOLTAGE LIFE 0046 125C, 7.0 VOLTS 1000 HRS 77 0 HIGH VOLTAGE LIFE 0050 125C, 7.0 VOLTS 1000 HRS 77 0 HIGH TEMP OP LIFE 0327 125C, 5.5 VOLTS 1000 HRS 77 0 HIGH TEMP OP LIFE 0328 125C, 5.5 VOLTS 1000 HRS 77 0 Total: 0 STORAGE LIFE DESCRIPTION DATE CODE CONDITION READPOINT QUANTITY STORAGE LIFE 0327 150C 1000 HRS 77 0 STORAGE LIFE 0328 150C 1000 HRS 77 0 Total: FAILS 0 TEMPERATURE CYCLE DESCRIPTION DATE CODE CONDITION READPOINT QUANTITY TEMP CYCLE 9435 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9452 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9504 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9522 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9527 -55C TO 125C 1000 CYS 77 0 TEMP CYCLE 9527 -55C TO 125C 10 CYS 231 FAILS BURN-IN 9527 125C, 7.0 VOLTS 58 HRS 231 0 TEMP CYCLE 9527 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9531 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9544 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9552 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9619 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9643 -55C TO 125C 1000 CYS 36 0 TEMP CYCLE 9712 -55C TO 125C 1000 CYS 39 0 TEMP CYCLE 9745 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 9811 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 9838 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 0001 -55C TO 125C 1100 CYS 40 0 TEMP CYCLE 0016 -55C TO 125C 1000 CYS 60 0 TEMP CYCLE 0042 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 0046 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 0050 -55C TO 125C 1000 CYS 40 0 TEMP CYCLE 0327 -55C TO 125C 1000 CYS 77 0 TEMP CYCLE 0328 -55C TO 125C 1000 CYS 77 0 Total: 0 TEMPERATURE HUMIDITY BIAS DESCRIPTION DATE CODE CONDITION READPOINT QUANTITY FAILS BIASED MOISTURE 9435 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9452 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9504 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9522 85/85, 5.5 VOLTS 959 HRS 77 0 HAST 9527 120C, 85%R.H.,5.5V 200 HRS 76 0 BIASED MOISTURE 9527 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9531 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9544 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9552 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9619 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9643 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9712 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9745 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9811 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 9838 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 0001 85/85, 5.5 VOLTS 959 HRS 77 0 HAST 0016 130C, 85%R.H.,5.5V 100 HRS 59 0 BIASED MOISTURE 0042 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 0046 85/85, 5.5 VOLTS 959 HRS 77 0 BIASED MOISTURE 0050 85/85, 5.5 VOLTS 959 HRS 77 0 HAST 0327 130C, 85%R.H.,5.5V 96 HRS 77 0 HAST 0328 130C, 85%R.H.,5.5V 96 HRS 77 0 Total: 0 UNBIASED MOISTURE RESISTANCE DESCRIPTION DATE CODE CONDITION READPOINT QUANTITY AUTOCLAVE 9435 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9452 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9504 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9522 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9527 121C, 2 ATM STEAM, UNBIASED 168 HRS 45 0 AUTOCLAVE 9527 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9531 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9544 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9552 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9619 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9643 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9712 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 9745 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 9811 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 9838 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 0001 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 0016 121C, 2 ATM STEAM, UNBIASED 96 HRS 38 0 AUTOCLAVE 0042 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 0046 121C, 2 ATM STEAM, UNBIASED 96 HRS 39 0 AUTOCLAVE 0050 121C, 2 ATM STEAM, UNBIASED 96 HRS 40 0 AUTOCLAVE 0327 121C, 2 ATM STEAM, UNBIASED 168 HRS 77 0 AUTOCLAVE 0328 121C, 2 ATM STEAM, UNBIASED 168 HRS 77 0 Total: FAILURE RATE: MTTF (YRS): 245656 FITS: 0.5 FAILS 0