• <thead id="lxizq"><xmp id="lxizq"><big id="lxizq"></big>
  • 參數(shù)資料
    型號(hào): MPSW10RLRM
    廠商: ON SEMICONDUCTOR
    元件分類: 小信號(hào)晶體管
    英文描述: 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    封裝: PLASTIC, TO-226AE, 3 PIN
    文件頁(yè)數(shù): 25/34頁(yè)
    文件大?。?/td> 337K
    代理商: MPSW10RLRM
    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(guān)PDF資料
    PDF描述
    MPSW10 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    MPSW10ZL1 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    MPSW10RLRA 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    MPSW10RL 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    MPSW10RLRE 500 mA, 300 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    MPSW13 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:One Watt Darlington Transistors(NPN Silicon)
    MPSW13RLRA 功能描述:達(dá)林頓晶體管 1A 30V NPN RoHS:否 制造商:Texas Instruments 配置:Octal 晶體管極性:NPN 集電極—發(fā)射極最大電壓 VCEO:50 V 發(fā)射極 - 基極電壓 VEBO: 集電極—基極電壓 VCBO: 最大直流電集電極電流:0.5 A 最大集電極截止電流: 功率耗散: 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-18 封裝:Reel
    MPSW13RLRAG 功能描述:達(dá)林頓晶體管 1A 30V NPN RoHS:否 制造商:Texas Instruments 配置:Octal 晶體管極性:NPN 集電極—發(fā)射極最大電壓 VCEO:50 V 發(fā)射極 - 基極電壓 VEBO: 集電極—基極電壓 VCBO: 最大直流電集電極電流:0.5 A 最大集電極截止電流: 功率耗散: 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-18 封裝:Reel
    MPSW14 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:One Watt Darlington Transistors(NPN Silicon)
    MPSW3725 功能描述:兩極晶體管 - BJT NPN Transistor 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(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2