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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 : ken.wendel@dalsemi.com 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. 55C) ts = Time at stress temperature (e.g. 125C) 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:
OPERATING LIFE
DESCRIPTION INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH TEMP OP LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE DATE CODE CONDITION 9435 9435 9452 9452 9504 9504 9522 9522 9527 9527 9527 9531 9531 9544 9544 9552 9552 9619 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 5.5 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS READPOINT QUANTITY 48 HRS 231 77 231 77 231 77 231 77 315 116 77 231 77 231 77 231 77 231 FAILS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1P, 1M, 2.0um, Pfield , WJ BPSG Passivation w/Nitride 100 x 82 Unknown Aluminum / 1% Silicon / 0.5% Copper 250 A
,
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE INFANT LIFE HIGH VOLTAGE LIFE HIGH VOLTAGE LIFE HIGH TEMP OP LIFE HIGH TEMP OP LIFE
9619 9643 9643 9712 9712 9722 9745 9745 9811 9811 9838 9838 0001 0001 0016 0016 0042 0042 0046 0046 0050 0327 0328
125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 7.0 VOLTS 125C, 5.5 VOLTS 125C, 5.5 VOLTS
1000 HRS 48 HRS
77 229 77 231 77 153 234 77 234 77 234 77 234 77 237 77 234 77 233 77 77 77 77
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1000 HRS 48 HRS
1000 HRS 1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 48 HRS
1000 HRS 1000 HRS 1000 HRS 1000 HRS Total:
STORAGE LIFE
DESCRIPTION STORAGE LIFE STORAGE LIFE DATE CODE CONDITION 0327 0328 150C 150C READPOINT QUANTITY 1000 HRS 1000 HRS Total: 77 77 FAILS 0 0 0
TEMPERATURE CYCLE
DESCRIPTION TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE DATE CODE CONDITION 9435 9452 9504 9522 9527 9527 -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C READPOINT QUANTITY 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 10 CYS 39 39 39 39 77 231 FAILS 0 0 0 0 0
BURN-IN TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE TEMP CYCLE
9527 9527 9531 9544 9552 9619 9643 9712 9745 9811 9838 0001 0016 0042 0046 0050 0327 0328
125C, 7.0 VOLTS -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C -55C TO 125C
58
HRS
231 39 39 39 39 39 36 39 40 40 40 40 60 40 40 40 77 77
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1100 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS 1000 CYS Total:
TEMPERATURE HUMIDITY BIAS
DESCRIPTION BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE HAST BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE DATE CODE CONDITION 9435 9452 9504 9522 9527 9527 9531 9544 9552 9619 9643 9712 9745 9811 9838 0001 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 120C, 85%R.H.,5.5V 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS READPOINT QUANTITY 959 959 959 959 200 959 959 959 959 959 959 959 959 959 959 959 HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS 77 77 77 77 76 77 77 77 77 77 77 77 77 77 77 77 FAILS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
HAST BIASED MOISTURE BIASED MOISTURE BIASED MOISTURE HAST HAST
0016 0042 0046 0050 0327 0328
130C, 85%R.H.,5.5V 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 85/85, 5.5 VOLTS 130C, 85%R.H.,5.5V 130C, 85%R.H.,5.5V
100 959 959 959 96 96
HRS HRS HRS HRS HRS HRS Total:
59 77 77 77 77 77
0 0 0 0 0 0 0
UNBIASED MOISTURE RESISTANCE
DESCRIPTION AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE AUTOCLAVE DATE CODE CONDITION 9435 9452 9504 9522 9527 9527 9531 9544 9552 9619 9643 9712 9745 9811 9838 0001 0016 0042 0046 0050 0327 0328 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED 121C, 2 ATM STEAM, UNBIASED READPOINT QUANTITY 96 96 96 96 168 96 96 96 96 96 96 96 96 96 96 96 96 96 96 96 168 168 HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS HRS Total: 38 38 38 38 45 38 38 38 38 38 38 38 40 40 40 40 38 40 39 40 77 77 FAILS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
FAILURE RATE:
MTTF (YRS): 245656
FITS: 0.5

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