- 您現在的位置：買賣IC網 > PDF目錄98033 > MPSA42RL (ON SEMICONDUCTOR) 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 PDF資料下載
參數資料
| 型號： | MPSA42RL |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 小信號晶體管 |
| 英文描述： | 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| 封裝： | PLASTIC, TO-226AA, 3 PIN |
| 文件頁數： | 25/34頁 |
| 文件大?。?/td> | 326K |
| 代理商： | MPSA42RL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁
9–19
Reliability and Quality Assurance
Motorola Small–Signal Transistors, FETs and Diodes Device Data
147
148
149
150
151
152
153
154
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39 40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
0
1
2
3
4
5
6
7
UCL = 152.8
= 150.4
LCL = 148.0
UCL = 7.3
= 3.2
LCL = 0
X
R
Figure 4. Example of Process Control Chart Showing Oven Temperature Data
Where D4, D3, and A2 are constants varying by sample size,
with values for sample sizes from 2 to 10 shown in the
following partial table:
n234
56789
10
D4
3.27
2.57
2.28
2.11
2.00
1.92
1.86
1.82
1.78
D3
*
0.08
0.14
0.18
0.22
A2
1.88
1.02
0.73
0.58
0.48
0.42
0.37
0.34
0.31
*For sample sizes below 7, the LCLR would technically be a negative number;
in those cases there is no lower control limit; this means that for a subgroup size
6, six ‘‘identical’’ measurements would not be unreasonable.
Control charts are used to monitor the variability of critical
process parameters. The R chart shows basic problems with
piece to piece variability related to the process. The X chart can
often identify changes in people, machines, methods, etc. The
source of the variability can be difficult to find and may require
experimental design techniques to identify assignable causes.
Some general rules have been established to help determine
when a process is OUT–OF–CONTROL. Figure 5 shows a
control chart subdivided into zones A, B, and C corresponding
to 3 sigma, 2 sigma, and 1 sigma limits respectively. In Figures
6 through 9 four of the tests that can be used to identify
excessive variability and the presence of assignable causes
are shown. As familiarity with a given process increases, more
subtle tests may be employed successfully.
Once the variability is identified, the cause of the variability
must be determined. Normally, only a few factors have a
significant impact on the total variability of the process. The
importance of correctly identifying these factors is stressed in
the following example. Suppose a process variability depends
on the variance of five factors A, B, C, D, and E. Each has a
variance of 5, 3, 2, 1, and 0.4, respectively.
Since:
σ tot =
σ A2 + σ B2 + σ C2 + σ D2 + σ E2
σ tot =
52 + 32 + 22 + 12 +(0.4)2 = 6.3
If only D is identified and eliminated, then:
σ tot =
52 + 32 + 22 + (0.4)2 = 6.2
This results in less than 2% total variability improvement. If
B, C, and D were eliminated, then:
σ tot =
52 + (0.4)2 = 5.02
This gives a considerably better improvement of 23%. If
only A is identified and reduced from 5 to 2, then:
σ tot =
22 + 32 + 22 + 12 + (0.4)2 = 4.3
Identifying and improving the variability from 5 to 2 yields a
total variability improvement of nearly 40%.
Most techniques may be employed to identify the primary
assignable cause(s). Out–of–control conditions may be
correlated to documented process changes. The product may
be analyzed in detail using best versus worst part comparisons
or Product Analysis Lab equipment. Multi–variance analysis
can be used to determine the family of variation (positional,
critical, or temporal). Lastly, experiments may be run to test
theoretical or factorial analysis. Whatever method is used,
assignable causes must be identified and eliminated in the
most expeditious manner possible.
After assignable causes have been eliminated, new control
limits are calculated to provide a more challenging variablility
criteria for the process. As yields and variability improve, it may
become more difficult to detect improvements because they
become much smaller. When all assignable causes have been
eliminated and the points remain within control limits for 25
groups, the process is said to in a state of control.
相關PDF資料 |
PDF描述 |
|---|---|
| MPSA43RLRE | 500 mA, 200 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| MPSA43RL | 500 mA, 200 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| MPSA43RL1 | 500 mA, 200 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| MPSA43RLRM | 500 mA, 200 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| MPSA44RL | 300 mA, 400 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MPSA42RL1 | 功能描述:兩極晶體管 - BJT 500mA 300V NPN RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| MPSA42RL1G | 功能描述:兩極晶體管 - BJT 500mA 300V NPN RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| MPSA42RLRA | 功能描述:兩極晶體管 - BJT 500mA 300V NPN RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| MPSA42RLRAG | 功能描述:兩極晶體管 - BJT 500mA 300V NPN RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| MPSA42RLRE | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。