1.产品简介
为了避免电子电路中在开机的瞬间产生的浪涌电流,在电源电路中串接一个功率型NTC热敏电阻,能有效地抑制开机时的浪涌电流,并且在完成抑制浪涌电流作用以后,由于通过其电流的持续作用,功率型NTC热敏电阻的电阻值将下降到非常小的程度,它消耗的功率可以忽略不计,不会对正常的工作电流造成影响,所以,在电源回路中使用功率型NTC热敏电阻,是抑制开机时的浪涌,以保证电子设备免遭破坏的最为简便而有效的措施。
2.应用范围
适用于转换电源、开关电源、UPS电源、各类电加热器、电子节能灯、电子镇流器、各种电子装置电源电路的保护以及彩色显示像管、白炽灯及其它照明灯具的灯丝保护。
3.特点:
·体积小,功率大,抑制浪涌电流能力强
·反应速度快
·材料常数(B值)大,残余电阻小
·寿命长,可靠性高
·系列全,工作范围宽
4.产品标志说明
5.外型结构和尺寸:(mm)
D +1 -2 | Tmax | d±0.05 | F 1 ±1 | F 2 ±1.5 | 直引线 | 弯引线 | ||
Lmin | L 1 min | L 2 ±2 | ||||||
MF72-□D5
| 6.5 | 5 | 0.6/0.45 | 5/2.5 | 3 | 25 | 17/5 | 8 |
MF72-□D7
| 8.5 | 5 | 0.6 | 5 | 3 | 25 | 17/5 | 8 |
MF72-□D9
| 10.5 | 5.5 | 0.8/0.6 | 7.5/5 | 5/3 | 25 | 17/5 | 8 |
MF72-□D11
| 12.5 | 5.5 | 0.8 | 7.5/5 | 5/3 | 25 | 17/5 | 8 |
MF72-□D13
| 14.5 | 6 | 0.8 | 7.5 | 5 | 25 | 17/5 | 8 |
MF72-□D15
| 16.5 | 6 | 0.8 | 10/7.5 | 5 | 25 | 17/5 | 8 |
MF72-□D20
| 21.5 | 7 | 1.0 | 10/7.5 | / | 25 | / | / |
MF72-□D25
| 26.5 | 8 | 1.0 | 10 | / | 25 | / | / |
备注 | a、□为额定零功率电阻值 b 、17/5其中17表示打弯成型的长引线,5表示打弯成型的短引线
|
6.主要技术参数
型号
| R25
| 最大稳态电流
| 最大电流时近似电阻值
| 耗散系数
| 热时间常数
| 工作温度
|
(Ω)
| (A)
| (Ω)
| (mW/℃)
| (S)
| (℃)
| |
MF72-5D5
| 5
| 1.0
| 0.353
| 6
| 20
| -55~+200
|
MF72-8D5
| 5
| 0.8
| 0.580
| 6
| 20
| |
MF72-10D5
| 10
| 0.7
| 0.771
| 6
| 20
| |
MF72-16D5
| 16
| 0.5
| 1.27
| 6
| 18
| |
MF72-22D5
| 22
| 0.5
| 1.56
| 6
| 18
| |
MF72-60D5
| 60
| 0.5
| 1.87
| 6
| 18
| |
MF72-100D5
| 100
| 0.2
| 4.89
| 6
| 18
| |
MF72-200D5
| 200
| 0.1
| 6.259
| 6
| 18
| |
MF72-5D7
| 5
| 2
| 0.283
| 10
| 30
| |
MF72-8D7
| 8
| 1
| 0.539
| 9
| 28
| |
MF72-10D7
| 10
| 1
| 0.616
| 9
| 27
| |
MF72-12D7
| 12
| 1
| 0.816
| 9
| 27
| |
MF72-16D7
| 16
| 0.7
| 1.003
| 9
| 27
| |
MF72-22D7
| 22
| 0.6
| 1.108
| 9
| 27
| |
MF72-33D7
| 33
| 0.5
| 1.485
| 10
| 28
| |
MF72-200D7
| 200
| 0.2
| 6.233
| 11
| 28
| |
MF72-3D9
| 3
| 4
| 0.120
| 11
| 35
| |
MF72-4D9
| 4
| 3
| 0.190
| 11
| 35
| |
MF72-5D9
| 5
| 3
| 0.210
| 11
| 34
| |
MF72-6D9
| 6
| 2
| 0.315
| 11
| 34
| |
MF72-8D9
| 8
| 2
| 0.400
| 11
| 32
| |
MF72-10D9
| 10
| 2
| 0.458
| 11
| 32
| |
MF72-12D9
| 12
| 1
| 0.652
| 11
| 32
| |
MF72-16D9
| 16
| 1
| 0.802
| 11
| 31
| |
MF72-20D9
| 20
| 1
| 0.864
| 11
| 30
| |
MF72-22D9
| 22
| 1
| 0.950
| 11
| 30
| |
MF72-30D9
| 30
| 1
| 1.022
| 11
| 30
| |
MF72-33D9
| 33
| 1
| 1.124
| 11
| 30
| |
MF72-50D9
| 50
| 1
| 1.252
| 11
| 30
| |
MF72-60D9
| 60
| 0.8
| 1.502
| 11
| 30
| |
MF72-80D9
| 80
| 0.8
| 2.010
| 11
| 30
| |
MF72-100D9
| 100
| 0.8
| 3.00
| 11
| 30
| |
MF72-120D9
| 120
| 0.8
| 3.015
| 11
| 30
| |
MF72-200D9
| 200
| 0.5
| 5.007
| 11
| 32
| |
MF72-400D9
| 400
| 0.2
| 9.852
| 11
| 32
| |
MF72-2.5D11
| 2.5
| 5
| 0.095
| 13
| 43
| |
MF72-3D11
| 3
| 5
| 0.100
| 13
| 43
| |
MF72-4D11
| 4
| 4
| 0.150
| 13
| 44
| |
MF72-5D11
| 5
| 4
| 0.156
| 13
| 45
| |
MF72-6D11
| 6
| 3
| 0.240
| 13
| 45
| |
MF72-8D11
| 8
| 3
| 0.255
| 14
| 47
| |
MF72-10D11
| 10
| 3
| 0.275
| 14
| 47
| |
MF72-12D11
| 12
| 2
| 0.462
| 14
| 48
| |
MF72-16D11
| 16
| 2
| 0.470
| 14
| 50
| |
MF72-20D11
| 20
| 2
| 0.512
| 15
| 52
| |
MF72-22D11
| 22
| 2
| 0.563
| 15
| 52
| |
MF72-30D11
| 30
| 1.5
| 0.667
| 15
| 52
| |
MF72-33D11
| 33
| 1.5
| 0.734
| 15
| 52
| |
MF72-50D11
| 50
| 1.5
| 1.021
| 15
| 52
| |
MF72-60D11
| 60
| 1.5
| 1.215
| 15
| 52
| |
MF72-80D11
| 80
| 1.2
| 1.656
| 15
| 52
| |
MF72-100D11
| 100
| 1.0
| 1.890
| 15
| 52
| |
MF72-120D11
| 120
| 1.0
| 2.406
| 15
| 54
| |
MF72-1.3D13
| 1.3
| 7
| 0.062
| 13
| 60
| |
MF72-1.5D13
| 1.5
| 7
| 0.073
| 13
| 60
| |
MF72-2.5D13
| 2.5
| 6
| 0.088
| 13
| 60
| |
MF72-3D13
| 3
| 6
| 0.092
| 14
| 60
| |
MF72-4D13
| 4
| 5
| 0.120
| 15
| 67
| |
MF72-5D13
| 5
| 5
| 0.125
| 15
| 68
| |
MF72-6D13
| 6
| 4
| 0.170
| 15
| 65
| |
MF72-7D13
| 7
| 4
| 0.188
| 15
| 65
| |
MF72-8D13
| 8
| 4
| 0.194
| 15
| 60
| |
MF72-10D13
| 10
| 4
| 0.206
| 15
| 65
| |
MF72-12D13
| 12
| 3
| 0.316
| 16
| 65
| |
MF72-15D13
| 15
| 3
| 0.335
| 16
| 60
| |
MF72-16D13
| 16
| 3
| 0.338
| 16
| 60
| |
MF72-20D13
| 20
| 3
| 0.372
| 16
| 65
| |
MF72-30D13
| 30
| 2.5
| 0.517
| 16
| 65
| |
MF72-47D13
| 47
| 2
| 0.810
| 17
| 65
| |
MF72-120D13
| 120
| 1.5
| 2.124
| 16
| 65
| |
MF72-1.3D15
| 1.3
| 8
| 0.048
| 18
| 68
| |
MF72-1.5D15
| 1.5
| 8
| 0.052
| 19
| 69
| |
MF72-3D15
| 3
| 7
| 0.075
| 18
| 76
| |
MF72-5D15
| 5
| 6
| 0.112
| 20
| 76
| |
MF72-6D15
| 6
| 5
| 0.155
| 20
| 80
| |
MF72-7D15
| 7
| 5
| 0.173
| 20
| 80
| |
MF72-8D15
| 8
| 5.5
| 0.178
| 20
| 80
| |
MF72-10D15
| 10
| 5.0
| 0.180
| 20
| 75
| |
MF72-12D15
| 12
| 4.8
| 0.250
| 20
| 75
| |
MF72-15D15
| 15
| 4.5
| 0.268
| 21
| 85
| |
MF72-16D15
| 16
| 4.5
| 0.276
| 21
| 70
| |
MF72-20D15
| 20
| 4.0
| 0.288
| 17
| 86
| |
MF72-30D15
| 30
| 3.5
| 0.438
| 18
| 75
| |
MF72-47D15
| 47
| 3.0
| 0.680
| 21
| 86
| |
MF72-120D15
| 120
| 2.5
| 1.652
| 22
| 87
| |
MF72-0.7D20
| 0.7
| 12
| 0.018
| 25
| 112
| |
MF72-1D20
| 1
| 9.5
| 0.020
| 23
| 112
| |
MF72-1.3D20
| 1.3
| 9
| 0.037
| 24
| 113
| |
MF72-2D20
| 2
| 8.2
| 0.040
| 25
| 113
| |
MF72-3D20
| 3
| 8
| 0.055
| 24
| 113
| |
MF72-5D20
| 5
| 7
| 0.087
| 23
| 112
| |
MF72-6D20
| 6
| 6
| 0.113
| 25
| 114
| |
MF72-8D20
| 8
| 6
| 0.142
| 25
| 115
| |
MF72-10D20
| 10
| 6
| 0.162
| 24
| 113
| |
MF72-12D20
| 12
| 5
| 0.195
| 24
| 114
| |
MF72-16D20
| 16
| 5
| 0.212
| 25
| 113
| |
MF72-0.7D25
| 0.7
| 13
| 0.014
| 30
| 151
| |
MF72-1D25
| 1
| 11
| 0.020
| 30
| 151
| |
MF72-1.5D25
| 1.5
| 10
| 0.027
| 30
| 152
| |
MF72-2D25
| 2
| 9.5
| 0.028
| 30
| 152
| |
MF72-3D25
| 3
| 8.5
| 0.044
| 32
| 150
| |
MF72-4D25
| 4
| 8
| 0.047
| 32
| 150
| |
MF72-5D25
| 5
| 8
| 0.070
| 32
| 151
| |
MF72-6D25
| 6
| 7.5
| 0.090
| 30
| 151
| |
MF72-8D25
| 8
| 7
| 0.114
| 33
| 151
| |
MF72-10D25
| 10
| 7
| 0.130
| 32
| 150
| |
MF72-12D25
| 12
| 6
| 0.156
| 32
| 150
| |
MF72-16D25
| 16
| 6
| 0.160
| 35
| 152
|
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