Q2 2012 Reliability Monitor Report

Reliability
Monitor
Report
High Temperature Operating Life
Data Retention Bake
Temperature Cycle
Temperature & Humidity Bias/ HAST
Steam Pressure Pot
Second QUARTER 2012
ATMEL PROPRIETARY
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. Technology List
10
10. Failure Rate Calculations
11
11. Definitions
12
RELIABILITY MONITOR -- ATMEL PROPRIETARY
Reliability Monitor Report
Date:
Jun 21, 2012
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: 13 FITS (1,352K 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: 22 FITS (354K 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 314 units)
4.
Temperature Humidity Bias (85°C/85%RH) and HAST (130°C/85%RH) *
Failure Rate: 0.00% (0 failures out of 3,811K 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 303 units)
RELIABILITY MONITOR -- ATMEL PROPRIETARY
* indicates that preconditioning is performed prior to the stress test.
1
High Temperature Operating Life
(sorted by FAMILY)
BU
QTR
48 Hours
168 Hours
500 Hours
1K Hours
REJ
SS
REJ
SS
REJ
SS
REJ
SS
Device-Hours*
WAF
EFR PPM
FITS
APG
1
LAST 4Q
0
0
82
328
0
0
82
328
0
0
82
328
0
0
82
328
82,000
328,000
23
23
0
0
492
123
ASIC
1
LAST 4Q
0
0
280
1,190
0
0
280
990
0
0
280
990
0
0
100
700
190,000
854,600
13
24
0
0
363
45
MEMORY
1
LAST 4Q
0
0
100
1,372
0
0
100
1,000
0
0
100
1,000
0
0
100
999
100,000
1,017,356
48
47
0
0
189
19
MCU
1
LAST 4Q
0
0
1,662
8,158
0
0
468
1,369
0
0
468
1,190
0
0
231
408
406,812
1,154,944
61
34
0
37
23
RFA
1
LAST 4Q
0
0
4,462
8,360
0
0
539
3,157
0
0
539
3,157
0
0
231
1,925
573,304
2,713,744
67
142
0
0
24
2
ATMEL
1
LAST 4Q
0
0
6,586
19,408
0
0
1,469
6,844
0
0
1,469
6,665
0
0
744
4,360
1,352,116
6,068,644
54
82
0
0
13
2
RELIABILITY MONITOR -- ATMEL PROPRIETARY
2
High Temperature Operating Life
(sorted by TECHNOLOGY)
TECH
QTR
48 Hours
168 Hours
500 Hours
1K Hours
Device-Hours*
WAF
EFR PPM
FITS
77
154,000
84
0
102
70
0
0
0
0
38,500
61,000
117
75
0
0
203
200
77
77
0
0
77
77
77,000
77,000
42
42
0
0
285
285
0
231
0
231
231,000
142
0
28
77
616
0
0
77
616
0
0
77
616
77,000
677,440
117
280
0
0
102
5
0
0
77
609
0
0
77
430
0
0
0
77
50,164
406,692
3
7
0
0
6,105
314
145
445
0
0
145
445
0
0
145
445
0
0
100
400
122,500
422,500
19
22
0
0
393
100
0
0
90
387
0
0
90
387
0
0
90
387
0
0
0
277
45,000
332,000
3
18
0
0
6,805
153
1
LAST 4Q
0
0
82
246
0
0
82
246
0
0
82
246
0
0
82
246
82,000
246,000
23
23
0
0
492
164
45.6K
1
LAST 4Q
0
0
154
467
0
0
154
467
0
0
154
467
0
0
0
236
77,000
351,500
142
114
0
0
84
23
45201
1
LAST 4Q
0
231
0
231
0
231
0
231
231,000
142
0
28
1
LAST 4Q
0
231
0
231
0
231
0
0
38,500
142
0
168
40K
1
LAST 4Q
0
0
477
631
0
0
77
231
0
0
77
231
0
0
77
231
96,200
250,200
117
117
0
0
81
31
38.6 K
1
LAST 4Q
0
0
3,600
3,754
0
0
77
231
0
0
77
231
0
0
77
231
246,104
400,104
17
55
0
0
225
41
35K
1
LAST 4Q
0
0
1,487
6,413
0
0
536
2,189
0
0
536
2,189
0
0
254
1,131
440,648
1,862,752
57
47
0
0
36
10
REJ
SS
REJ
SS
REJ
SS
REJ
SS
1
LAST 4Q
0
231
0
231
0
231
0
SCMOS3
1
LAST 4Q
0
0
77
122
0
0
77
122
0
0
77
122
SAC2NV
1
LAST 4Q
0
0
77
77
0
0
77
77
0
0
40009
1
LAST 4Q
0
231
0
231
75K
1
LAST 4Q
0
0
77
1,896
0
0
58K
1
LAST 4Q
0
0
320
3,174
57K
1
LAST 4Q
0
0
56K
1
LAST 4Q
46K
UHF
45102
RELIABILITY MONITOR -- ATMEL PROPRIETARY
3
High Temperature Operating Life
(sorted by TECHNOLOGY)
TECH
34K
19K
ATMEL
QTR
48 Hours
168 Hours
500 Hours
1K Hours
Device-Hours*
WAF
EFR PPM
FITS
99
108,716
42
0
202
0
200
218,240
42
0
101
0
0
744
4,360
1,352,116
6,068,644
54
82
0
0
13
2
REJ
SS
REJ
SS
REJ
SS
REJ
SS
1
LAST 4Q
0
292
0
100
0
100
0
1
LAST 4Q
0
580
0
200
0
200
1
LAST 4Q
0
0
6,586
19,408
0
0
1,469
6,844
0
0
1,469
6,665
* The Device-Hours computation includes additional read-outs not detailed in the report.
RELIABILITY MONITOR -- ATMEL PROPRIETARY
4
Data Retention Bake
(sorted by FAMILY)
BU
QTR
168 Hours
500 Hours
1K Hours
Device-Hours
AF
FITS
REJ
SS
REJ
SS
REJ
SS
1
LAST 4Q
0
80
0
80
0
80
80,000
117
98
1
0
80
0
80
0
80
80,000
98
LAST 4Q
0
397
0
397
0
397
397,000
117
117
MCU
1
LAST 4Q
0
0
314
1,644
0
0
314
1,564
0
0
234
1,484
274,000
1,537,440
117
117
29
5
ATMEL
1
LAST 4Q
0
0
394
2,121
0
0
394
2,041
0
0
314
1,961
354,000
2,014,440
117
117
22
4
ASIC
MEMORY
RELIABILITY MONITOR -- ATMEL PROPRIETARY
20
5
Data Retention Bake
(sorted by TECHNOLOGY)
TECH
QTR
168 Hours
500 Hours
1K Hours
REJ
SS
REJ
SS
REJ
SS
Device-Hours AF
FITS
63 K
1
LAST 4Q
0
0
80
240
0
0
80
240
0
0
80
240
80,000
240,000
117
117
98
33
58K
1
LAST 4Q
0
0
77
619
0
0
77
539
0
0
77
539
77,000
552,440
117
117
102
14
35K
1
LAST 4Q
0
0
237
1,025
0
0
237
1,025
0
0
157
945
197,000
985,000
117
117
40
8
34K
1
LAST 4Q
0
77
0
77
0
77
77,000
117
102
1
LAST 4Q
0
160
0
160
0
160
160,000
117
49
1
LAST 4Q
0
0
394
2,121
0
0
394
2,041
0
0
314
1,961
354,000
2,014,440
117
117
22
4
19K
ATMEL
RELIABILITY MONITOR -- ATMEL PROPRIETARY
6
Temperature Cycle
PACKAGE
QTR
100 Cycles
200 Cycles
500 Cycles
1K Cycles
REJ
SS
REJ
SS
REJ
SS
REJ
SS
% Defective
BGA
1
LAST 4Q
0
0
80
157
0
0
80
157
0
0
80
157
0
0
80
80
0.00%
0.00%
LGA
1
LAST 4Q
0
79
0
79
0
79
0
79
0.00%
1
LAST 4Q
0
548
0
543
0
471
0
471
0.00%
1
LAST 4Q
0
157
0
157
0
157
0
157
0.00%
1
LAST 4Q
0
79
0
79
0
79
0
79
0.00%
SOIC
1
LAST 4Q
0
0
80
160
0
0
80
160
0
0
80
160
0
0
80
160
0.00%
0.00%
TQFP
1
LAST 4Q
0
0
154
542
0
0
72
383
0
0
0
311
0
0
0
152
0.00%
0.00%
ATMEL
1
LAST 4Q
0
0
314
1,722
0
0
232
1,558
0
0
160
1,414
0
0
160
1,178
0.00%
0.00%
MLF / QFN
PDIP
PLCC
RELIABILITY MONITOR -- ATMEL PROPRIETARY
7
Temperature Humidity Bias / HAST
Temperature Humidity Bias
HAST
PACKAGE
QTR
168 Hours 500 Hours 1K Hours 100 Hours Device-Hours* % Defective
REJ SS REJ SS REJ SS REJ SS
BGA
1
LAST 4Q
0
77
0
77
0
77
0
0
77,000
0.00%
MLF / QFN
1
LAST 4Q
0
0
308
847
0
0
308
847
0
0
308
847
0
0
1,694
3,243
3,696,000
7,333,000
0.00%
0.00%
TQFP
1
LAST 4Q
0
308
0
308
0
307
0
695
1,697,500
0.00%
TRANS
1
LAST 4Q
0
0
154
308
0
0
154
308
0
0
77
154
0
0
0
0
115,500
231,000
0.00%
0.00%
ATMEL
1
LAST 4Q
0
0
462
1,540
0
0
462
1,540
0
0
385
1,385
0
0
1,694
4,174
3,811,500
9,810,500
0.00%
0.00%
RELIABILITY MONITOR -- ATMEL PROPRIETARY
8
Steam Pressure Pot
PACKAGE
QTR
96 Hours
168 Hours
240 Hours
REJ
SS
REJ
SS
REJ
SS
% Defective
BGA
1
LAST 4Q
0
0
80
157
0
0
80
80
0
0
80
80
0.0%
0.0%
LGA
1
LAST 4Q
0
80
0
80
0
80
0.0%
1
LAST 4Q
0
548
0
317
0
316
0.0%
1
LAST 4Q
0
157
0
157
0
157
0.0%
1
LAST 4Q
0
80
0
80
0
80
0.0%
SOIC
1
LAST 4Q
0
0
80
160
0
0
80
160
0
0
80
160
0.0%
0.0%
TQFP
1
LAST 4Q
0
0
143
607
0
0
0
80
0
0
0
80
0.0%
0.0%
ATMEL
1
LAST 4Q
0
0
303
1,789
0
0
160
954
0
0
160
953
0.00%
0.00%
MLF / QFN
PDIP
PLCC
RELIABILITY MONITOR -- ATMEL PROPRIETARY
9
Technology List
FAB
TECH
TYPE CMOS / BIP
LITHOGRAPHY [µm]
5
15.3
EEPROM
1.8 - 2.3
sEEPROM
5
19.3
EEPROM
1.1
sEEPROM
5
19.5
Embedded Memory Configurator
1.0
Configurator
5
19.6
Embedded Memory
0.7
EEPROM, MC (Intel core), MC (AVR core)
5
19.7
EPLD
0.5
PLD
5
19.76
EPLD
0.5
PLD
5
19.8
CMOS
0.7
ASIC
5
19.8
Embedded Memory Configurator
0.7
5
19.9
Embedded Memory
0.7
sEEPROM, PEROM, EEPROM, Configurator
Smartcard, AVR, µC
5
25
BiCMOS
1.0
ASIC
5
26
Logic
0.7
ASIC
5
33.5
FLASH
0.5
5
34
EPROM
0.5
NTO
35
5
35.5
Embedded Memory Configurator
0.35
EEPROM, FLASH, MICRO, EPLD
5
37
EEPROM
0.35
FLASH, PEROM, DATA FLASH, sEEPROM
5
39
EEPROM
0.25
DATA FLASH
5
39.1
EEPROM
0.25
FLASH, DATA FLASH
BiCMOS
0.6
5
42
CSO
43
HNO
46
5
55
Logic
5
55.8
5
56
5
TYPICAL PRODUCTS / APPLICATIONS
EPROM
ASIC
ASIC, TX RF
RFA
0.5
ASIC
CMOS
0.5
ASIC
Logic
0.35
ASIC
56.8
Embedded Memory
0.35
ASIC
7
57.0
CMOS
0.25
ASIC
7
57.5
CMOS
0.21
ASIC / RFA
7
58.0
CMOS
0.18
ASIC / RFA
SJO
61
CMOS
0.18
FLASH
SJO
63
HNO
75
HNO
6UH6+BICMOS
RFA
HNO
BCDMOS
HNO
BICMOS
HNO
BICMOS2
HNO
I²L
HNO
SCMOS3
HNO
RFA
6BD1
0.8
ASIC / RFA
ASIC / RFA
RFA
6IL4
2
ASIC
SIGE2
6SG1
0.8
RFA
HNO
UHF
6UH6
0.5
ASIC / RFA
HNO
UNI3
NTO
Z86
CMOS Digital
0.8
SRAM,MICRO, VAN DLC
NTO
Z91
CMOS Digital
0.6
SRAM, ASIC, MICRO
NTO
Z92
CMOS Digital
0.5
ASIC, MICRO,VAN DLC
CMOS + EPROM
0.5
OTP MICRO
RFA
RFA
NTO
Z94
HNO
Z95
RFA
HNO
Z96
RFA
RELIABILITY MONITOR -- ATMEL PROPRIETARY
10
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 -- ATMEL PROPRIETARY
11
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 -- ATMEL PROPRIETARY
12