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參數(shù)資料
| 型號： | UPD7720AC |
| 廠商： | NEC Corp. |
| 英文描述： | QUARTERLY MICROPROCESSOR/MICROCOMPUTER RELIABILITY REPORT |
| 中文描述： | 季報微處理器/微機可靠性報告 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 59K |
| 代理商： | UPD7720AC |
NEC Electronics Inc.
Roseville Manufacturing
6
Table 3. HTB Life Test Summary and Failure Rate Predictions
This table summarizes the reliability test results of processes extensively used by most NEC microprocessor products. The
failure rate predictions are based on both 125
°
C and 150
°
C high-temperature bias life test results. Failure rate predictions
are shown for the current period of available data and for past periods of cumulative data.
μ
PD7720AC
(28-pin DIP)
Process Type
Jan 88–Dec 98
(cumulative)
Process Period
(125
°
C)
448
520,000
0
17.9
9.3 x 106
Ambient
Temp.
Number
of
Devices
448
Accum,.
Device
Hours
520,000
No. of
Failures
Accel.
Factor
(Note 1)
17.9
Equiv.
Device
Hours
9.3 x 106
Failure Rate, 55
°
C
and 60% Confidence
Level (Note 2)
0.0098 %/1000
= 98.0 FIT
NMOS-4
Total
μ
PD77C20AC
(28-pin DIP)
μ
PD77C25C
(28-pin DIP)
μ
PD70108C
(40-pin DIP)
μ
PD7503A
(64-pin QFP)
μ
PD75304
(80-pin QFP)
μ
PD75306
(80-pin QFP)
μ
PD75308
(80-pin QFP)
μ
PD75312
(80-pin QFP)
μ
PD75316
(80-pin QFP)
μ
PD17010
(80-pin QFP)
μ
PD78C10
(80-pin QFP)
Singapore Assembly
μ
PD75216
(80-pin QFP)
Singapore Assembly
μ
PD75308
(80-pin QFP)
Singapore Assembly
CMOS-4
Total
μ
PD70208
(68-pin PLCC)
∝
PD70216
(68-pin PLCC)
μ
PD70320
(84-pin PLCC)
μ
PD70325
(84-pin PLCC)
Jan 88– Mar 99
(cumulative)
Jul 90– Mar 99
(cumulative)
Jul 90– Mar 99
(cumulative)
Jan 90– Mar 99
(cumulative)
Jan 97– Mar 99
(cumulative)
Apr 92– Mar 99
(cumulative)
Apr 92– Mar 99
(cumulative)
Jan 90– Mar 99
(cumulative)
Jul 94– Mar 99
(cumulative)
Jul 94– Mar 99
(cumulative)
Oct 94– Mar 99
(cumulative)
Jan 92– Mar 99
(cumulative)
(125
°
C)
0
(125
°
C)
432
432,000
0
32.6
1.41 x 107
(125
°
C)
96
96,000
0
32.6
3.13 x 106
(125
°
C)
24
24,000
0
32.6
7.82 x 105
(125
°
C)
168
168,000
0
32.6
5.48 x 106
(125
°
C)
384
384,000
0
32.6
1.25 x 107
(125
°
C)
120
120,000
0
32.6
2.35 x 106
(125
°
C)
360
360,000
0
32.6
8.61 x 106
(125
°
C)
312
311,168
1
32.6
9.39 x 106
(125
°
C)
552
552,000
0
32.6
1.80 x 107
(125
°
C)
72
72,000
0
32.6
2.35 x 106
(125
°
C)
24
24,000
0
32.6
7.82 x 105
Jan 92– Mar 99
(cumulative)
(125
°
C)
144
144,000
0
32.6
4.69 x 106
Jan 92– Mar 99
(cumulative)
(125
°
C)
120
120,000
0
32.6
3.91 x 106
Jan 89– Mar 99
(cumulative)
Jan 92– Mar 99
(cumulative)
Apr 93– Mar 99
(cumulative)
Jul 91– Mar 99
(cumulative)
Jan 92– Mar 99
(cumulative)
(125
°
C)
2808
2,812,168
1
32.6
9.17 x107
0.0022%/1000
= 22FIT
(125
°
C)
748
736,000
0
11.3
805. x 106
(125
°
C)
936
936,000
0
11.3
1.06 x 107
(125
°
C)
508
508,000
0
11.3
3.30 x 106
(125
°
C)
644
644,000
1
11.3
5.65 x 106
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