Q1 2013 Reliability Monitor Report (2012 data)

Reliability
Monitor
Report
High Temperature Operating Life
Data Retention Bake
Temperature Cycle
Temperature & Humidity Bias/ HAST
Steam Pressure Pot
First QUARTER 2013
Table of Contents
1. Executive Summary
1
2. HTOL (sorted by product BU)
2
3. HTOL (sorted by technology)
3-4
4. Data Retention Bake (sorted by product BU)
5
5. Data Retention Bake (sorted by technology)
6
6. Temperature Cycle
7
7. Temperature Humidity Bias & HAST
8
8. Steam Pressure Pot
9
9. Failure Rate Calculations
10
10. Definitions
11
RELIABILITY MONITOR REPORT
Reliability Monitor Report
Date:
Oct 22, 2013
Executive Summary
The intent of the Reliability Monitor Program is to measure the reliability of previously
qualified devices on a quarterly basis. This is achieved by selecting representative
devices within a process, package or business unit and performing a series of reliability
tests to ensure that the reliability has maintained over time. Listed below are the
overall results for the last quarter.
1.
High Temperature Operating Life (125° - 150°C; 0 failures)
✓ Failure Rate: 10 FITS (616,196 device-hours)
✓ Note: The Exponential Model is used to derive FIT rates (60% Confidence; EA = 0.6
eV). Also, Thermal and Voltage Acceleration are used to compute the overall
acceleration factor. Weighted acceleration factors (WAF) for a group of products are
calculated by taking the weighted average of each device’s acceleration factor multiplied
by its corresponding device hours. All failures were inconclusive.
2.
Data Retention Bake (150°C; 0 failures)
✓ Failure Rate: 98 FITS (80K device-hours)
✓ Note: The Exponential Model is used to derive FIT rates (60% Confidence; EA = 0.6
eV). Since there is no bias applied during testing and the stress temperature is fixed for
all devices at 150°C, the acceleration factor is 117 for all groupings.
3.
Temperature Cycle (-65°C to 150°C, 500 cycles) *
✓ Failure Rate: 0.00% (0 failures out of 80 units)
4.
Temperature Humidity Bias (85°C/85%RH) and HAST (130°C/85%RH) *
✓ Failure Rate: 0.00% (0 failures out of 622K device-hours)
✓ Note: A 20:1 Acceleration Factor is used to combine HAST results with THB).
5.
Steam Pressure Pot (121°C/100%RH) *
✓ Failure Rate: 0.00% (0 failures out of 80 units)
RELIABILITY MONITOR REPORT
* indicates that preconditioning is performed prior to the stress test.
1
High Temperature Operating Life
(sorted by FAMILY)
48 Hours
REJ
SS
168 Hours
REJ
SS
500 Hours
REJ
SS
1K Hours
REJ SS
BU
QTR
APG
4
LAST 4Q
0
82
0
82
0
82
0
4
LAST 4Q
0
280
0
280
0
280
4
LAST 4Q
0
999
0
340
0
4
LAST 4Q
0
1,739
0
545
RFA
4
LAST 4Q
0
0
5,211
13,332
0
0
ATMEL
4
LAST 4Q
0
0
5,211
16,432
0
0
ASIC
MEMORY
MCU
Device-Hours*
WAF
EFR PPM
FITS
82
82,000
23
0
492
0
100
190,000
13
0
363
340
0
340
371,632
111
0
22
0
545
0
308
483,812
70
0
27
384
2,682
0
0
384
2,682
0
0
231
1,381
616,196
2,693,700
146
106
0
0
10
3
384
3,929
0
0
384
3,929
0
0
231
2,211
616,196
3,821,144
146
96
0
0
10
2
RELIABILITY MONITOR REPORT
2
High Temperature Operating Life
(sorted by TECHNOLOGY)
48 Hours
REJ
SS
168 Hours
REJ
SS
500 Hours
REJ
SS
1K Hours
REJ
SS
TECH
QTR
Device-Hours*
WAF
EFR PPM
FITS
UHF6
4
LAST 4Q
0
153
0
153
0
153
0
0
76,500
42
0
287
4
LAST 4Q
0
800
0
0
0
0
0
0
38,400
117
0
204
4
LAST 4Q
0
77
0
77
0
77
0
0
38,500
117
0
203
4
LAST 4Q
0
231
0
231
0
231
0
77
154,000
79
0
75
4
LAST 4Q
0
77
0
77
0
77
0
0
38,500
206
0
116
4
LAST 4Q
0
77
0
77
0
77
0
77
77,000
42
0
285
I2L4
4
LAST 4Q
0
0
77
77
0
0
77
77
0
0
77
77
0
0
0
0
38,500
38,500
117
117
0
0
203
203
BD1-2_P
4
LAST 4Q
0
157
0
157
0
157
0
157
157,000
6
0
987
BCDMOS
4
LAST 4Q
0
0
76
152
0
0
76
152
0
0
76
152
0
0
0
0
38,000
76,000
117
60
0
0
206
201
77K
4
LAST 4Q
0
73
0
73
0
73
0
73
73,000
96
0
130
75K
4
LAST 4Q
0
0
4,027
4,637
0
0
77
687
0
0
77
687
0
0
77
615
266,600
840,600
180
161
0
0
19
7
63K
4
LAST 4Q
0
899
0
240
0
240
0
240
271,632
135
0
25
58.9K
4
LAST 4Q
0
0
800
800
0
0
0
0
0
0
0
0
0
0
0
0
38,400
38,400
44
44
0
0
548
548
58K
4
LAST 4Q
0
320
0
77
0
77
0
0
50,164
3
0
6,105
4
LAST 4Q
0
145
0
145
0
145
0
100
122,500
19
0
393
4
LAST 4Q
0
90
0
90
0
90
0
0
45,000
3
0
6,805
UHF5
SCMOS3
SAC2NV
SIGE1
IL4-12KC_PC
57K
56K
RELIABILITY MONITOR REPORT
3
High Temperature Operating Life
(sorted by TECHNOLOGY)
48 Hours
REJ
SS
168 Hours
REJ
SS
500 Hours
REJ
SS
1K Hours
REJ
SS
TECH
QTR
46K
4
LAST 4Q
0
82
0
82
0
82
0
4
LAST 4Q
0
154
0
154
0
154
4
LAST 4Q
0
151
0
151
0
45.3K
4
LAST 4Q
0
0
154
154
0
0
77
77
45.2K
4
LAST 4Q
0
77
0
4
LAST 4Q
0
77
4
LAST 4Q
0
40.1K
4
LAST 4Q
40K
45.6K
45.5K
45.1 K
40.2K
38.6 K
35.4K
35K
ATMEL
Device-Hours*
WAF
EFR PPM
FITS
82
82,000
23
0
492
0
0
77,000
142
0
84
151
0
151
225,000
110
0
37
0
0
77
77
0
0
77
77
157,696
157,696
142
142
0
0
41
41
77
0
77
0
0
38,500
104
0
228
0
77
0
77
0
0
38,500
42
0
571
154
0
154
0
154
0
0
77,000
111
0
108
0
0
77
1,177
0
0
77
77
0
0
77
77
0
0
77
77
77,000
129,800
117
109
0
0
102
65
4
LAST 4Q
0
477
0
77
0
77
0
77
96,200
117
0
81
4
LAST 4Q
0
3,600
0
77
0
77
0
77
246,104
17
0
225
4
LAST 4Q
0
77
0
77
0
77
0
77
77,000
117
0
102
4
LAST 4Q
0
1,487
0
536
0
536
0
254
440,648
57
0
36
4
LAST 4Q
0
0
5,211
16,432
0
0
384
3,929
0
0
384
3,929
0
0
231
2,211
616,196
3,821,144
146
96
0
0
10
2
* The Device-Hours computation includes additional read-outs not detailed in the report.
RELIABILITY MONITOR REPORT
4
Data Retention Bake
(sorted by FAMILY)
168 Hours
REJ
SS
500 Hours
REJ
SS
1K Hours
REJ
SS
BU
QTR
MEMORY
4
LAST 4Q
0
0
80
560
0
0
80
560
0
0
MCU
4
LAST 4Q
0
474
0
474
4
LAST 4Q
0
0
80
1,034
0
0
80
1,034
ATMEL
Device-Hours
AF
FITS
80
560
80,000
560,000
117
117
98
14
0
394
434,000
117
18
0
0
80
954
80,000
994,000
117
117
98
8
RELIABILITY MONITOR REPORT
5
Data Retention Bake
(sorted by TECHNOLOGY)
168 Hours
REJ
SS
500 Hours
REJ
SS
1K Hours
REJ
SS
TECH
QTR
63 K
4
LAST 4Q
0
0
80
480
0
0
80
480
0
0
80
480
80,000
480,000
117
117
98
16
58K
4
LAST 4Q
0
77
0
77
0
77
77,000
117
102
4
LAST 4Q
0
80
0
80
0
80
80,000
117
98
4
LAST 4Q
0
317
0
317
0
237
277,000
117
28
4
LAST 4Q
0
80
0
80
0
80
80,000
117
98
4
LAST 4Q
0
0
80
1,034
0
0
80
1,034
0
0
80
954
80,000
994,000
117
117
98
8
37K
35K
34K
ATMEL
Device-Hours AF
RELIABILITY MONITOR REPORT
6
FITS
Temperature Cycle
100 Cycles
REJ
SS
200 Cycles
REJ
SS
500 Cycles
REJ
SS
1K Cycles
REJ
SS
PACKAGE
QTR
CASON
4
LAST 4Q
0
0
80
80
0
0
80
80
0
0
80
80
0
0
80
80
0.00%
0.00%
BGA
4
LAST 4Q
0
80
0
80
0
80
0
80
0.00%
4
LAST 4Q
0
80
0
80
0
80
0
80
0.00%
4
LAST 4Q
0
160
0
160
0
160
0
160
0.00%
4
LAST 4Q
0
400
0
400
0
400
0
400
0.00%
4
LAST 4Q
0
154
0
72
0
0
0
0
0.00%
4
LAST 4Q
0
0
80
954
0
0
80
872
0
0
80
800
0
0
80
800
0.00%
0.00%
MLF / QFN
PDIP
SOIC
TQFP
ATMEL
RELIABILITY MONITOR REPORT
7
% Defective
Temperature Humidity Bias / HAST
Temperature Humidity Bias
HAST
168 Hours 500 Hours 1K Hours 100 Hours Device-Hours* % Defective
REJ SS REJ SS REJ SS REJ SS
PACKAGE
QTR
MLF / QFN
4
LAST 4Q
0
308
0
308
0
308
0
2,852
6,012,000
0.00%
4
LAST 4Q
0
154
0
154
0
77
0
0
115,500
0.00%
4
LAST 4Q
0
462
0
462
0
385
0
0
311
5,337
622,000
11,097,500
0.00%
0.00%
TRANS
ATMEL
RELIABILITY MONITOR REPORT
8
Steam Pressure Pot
96 Hours
REJ
SS
168 Hours
REJ
SS
240 Hours
REJ
SS
PACKAGE
QTR
CASON
4
LAST 4Q
0
0
80
80
0
0
80
80
0
0
80
80
0.0%
0.0%
BGA
4
LAST 4Q
0
80
0
80
0
80
0.0%
4
LAST 4Q
0
80
0
80
0
80
0.0%
4
LAST 4Q
0
160
0
160
0
160
0.0%
4
LAST 4Q
0
400
0
400
0
400
0.0%
4
LAST 4Q
0
143
0
0
0
0
0.0%
4
LAST 4Q
0
0
80
943
0
0
80
800
0
0
80
800
0.00%
0.00%
MLF / QFN
PDIP
SOIC
TQFP
ATMEL
RELIABILITY MONITOR REPORT
% Defective
9
Failure Rate Calculations
Failure Rate:
χ2
λ =
where,
λ
χ2
α
n
AF
DH
=
=
=
=
=
=
(1 −
α
100
, 2⋅n + 2 )
⋅ 109
2 ⋅ AF ⋅ DH
Failure Rate (FITS)
Failure Estimate
Confidence Level (60% or 90%)
Number of Failures
Overall Acceleration Factor (TAF x VAF)
Device Hours
Thermal Acceleration:
TAF
where,
TAF
EA
k
T
f
s
P
θJA
=
=
=
=
=
=
=
=
= e

ea 
1
1
⋅
−

k  Tf + ( Pf ⋅θ JAf ) Ts + ( Ps ⋅θ JAs ) 
Thermal Acceleration Factor
Activation Energy (eV)
Boltzman’s Constant (8.617 x 10-5 eV/°K)
Temperature (°K)
Field Conditions
Stress Conditions
Power Dissipation (W)
Thermal Resistance Coefficient - Junction to Ambient (°C/W)
Voltage Acceleration:
VAF
where,
VAF
Vs
Vn
Z
=
=
=
=
= eZ⋅
[ VS − Vn ]
Voltage Acceleration Factor
Stress Voltage (V)
Nominal Voltage (V)
Voltage Acceleration Constant (typically, 0.5 < Z < 1.0)
RELIABILITY MONITOR REPORT
10
Definitions
Data Retention Bake (DRB): This test is used to measure a device’s ability to retain
a charge for extended periods of time without applying voltage bias. Stressing
at high temperatures (150°C for plastic packages) accelerates any discharge
causing the memory state to change.
Failures In Time (FITS): This is the unit measure for expressing failure rates and is
identical to the expression PPM/K hours. For example, three failures out of a
million components tested for one thousand hours equates to 3 FITS.
High Temperature Operating Life (HTOL): The purpose of this test is to accelerate
thermally activated failure mechanisms through the use of high temperatures
(typically between 125°C and 150°C), increased voltage, and dynamic bias
conditions. Readouts at various time points are taken to determine the Early
Failure Rate (EFR) and Intrinsic Failure Rate (IFR). EFR is expressed in
defective parts per million (DPPM) and IFR is expressed in Failures in Time
(FITS at 55°C).
Highly Accelerated Stress Test (HAST): The purpose of this test is to evaluate a
plastic packaged component’s ability to withstand harsh environmental
conditions with extreme temperature and humidity levels. The parts are
stressed to high temperature (130°C) and relative humidity (85%RH) conditions
in a biased state to achieve maximum acceleration.
Steam Pressure Pot (SPP): The test is used to evaluate a plastic packaged
component’s ability to withstand severe conditions of pressure (15 psig),
temperature (121°C), and humidity (100%RH).
Temperature Cycle (TC): This test is used to measure a product’s sensitivity to
thermal stresses due to differences in expansion and contraction characteristics
of the die and mold compound by repeated alternating temperature dwells
between high and low temperature extremes.
Temperature Humidity Bias (THB): The purpose of this test (85°C/85%RH) is
identical to HAST. The only difference is that HAST accelerates THB by a factor
of 20:1 due to the increase in temperature during test.
RELIABILITY MONITOR REPORT
11