MH281是一颗单极霍尔开关，可用作电器的单向开关.
MH281 is an unipolar Hall effect sensor IC. It incorporates advanced chopper stabilization technology to provide accurate and stable magnetic switch points. The design, specifications and performance have been optimized for applications of solid state switches.
The output transistor will be switched on (BOP) in the presence of a sufficiently strong South pole magnetic field facing the marked side of the package. Similarly, the output will be switched off (BRP) in the presence of a weaker South field and remain off with “0” field.
The package type is in a Halogen Free version was verified by third party organization. Halogen Free package is available by customer’s option.
MH281特点和优点
l CMOS霍尔IC技术
l 固态可靠性
l 斩波稳定放大器阶段
l 单极，输出开关与南极的磁铁从绝对值
l 工作电压可低至3.0V
l 高灵敏度直接簧开关的替代应用
125 100％测试℃ 于K规格。
l 自定义灵敏度/温度选择可用。
应用
l 固态开关 l 限位开关 l 电流限制 l 断续器
l 电流检测 l 为磁簧开关更换磁铁接近传感器
Ordering
Number
MH281
Operation
type
Switch
Temperature
E/K
Package
UA/SO
Voltage
range
3V - 24V
Output
current
50mA
Sensitivity(typ)
250(175) Gauss
Status
NOW
note
CMOS, Low sensitivity Unipolar switch(High Temp
Testing)
CMOS Hall IC Technology l
Solid-State Reliability l
Chopper stabilized amplifier stage l
Unipolar, output switches with absolute value of South pole from magnet l
Operation down to 3.0V l
High Sensitivity for direct reed switch replacement applications l
100% tested at 125℃ for K Spec l
Custom sensitivity / Temperature selection are availablel
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Ordering
Number
Operation
type
Temperature
Package
Voltage 电压范围
range
Output 输出电流
Current
Sensitivity
灵敏度
（典型值）
(typ)
Status
MH181
Latch
E/K
UA/SO
3.5V - 20V
25mA
90 Gauss
NOW
MH182
Latch
E/K
UA/SO
3V - 24V
50mA
60 Gauss
NOW
MH187
Latch
E/K/L
UA/SO/SQ
3.5V-26V
50mA
60 Gauss
NOW
MH188
Latch
E/K
UA/SO
2.5V-24V
50mA
25 Gauss
Now
MH189
Latch
E/K
UA/SO
3V - 26V
12mA
40 Gauss
NOW
MH190
Latch
E/K
UA/SO
4V-30V
25mA
110 Gauss
NOW
MH192
Latch
E/K
UA/SO/SQ
1.65V-6V
25mA
60(30) Gauss
NOW
MH281
Switch
E/K
UA/SO
3V - 24V
50mA
250(175) Gauss
NOW
MH282
Switch
E/K
UA/SO
3V - 24V
50mA
100 Gauss
NOW
MH284
Switch
E/K
UA/SO
4.5V-30V
25mA
175 Gauss
Sampling
MH248
Switch
E
UA/SO/ST/SQ
2.5V - 3.5V
2mA
60 Gauss
NOW
MH250
Switch
E
SO/ST/SQ/UA
1.7V - 3.5V
5mA
40(30) Gauss
NOW
MH251
Switch
E
ST/SN/SQ/UA
1.65V - 3.5V
1mA
55(30) Gauss
NOW
MH252
Switch
E
VK/SN
1.65V - 3.5V
1mA
50(30) Gauss
NOW
MH253
Switch
E/K
UA/SO/SQ
2.5V - 6V
25mA
60(30) Gauss
NOW
MH481
Linear
I
UA/SG/SQ
3V - 6.5V
10mA
2mV/Gauss
NOW
MH276
Driver
E
VK
3.5V-20V
400mA
50/70/100 Gauss
NOW
MH276T
Driver
E
VK
3.5V-20V
400mA
50/70/100 Gauss
NOW
MH477
Driver
E
VK
3.5V-20V
350mA
70/100/130 Gauss
NOW
MH477S
Driver
E
VK
3.5V-20V
200mA
70/100/130 Gauss
NOW
MH381/381F/381R
Driver
E/K
VK/VF/SF
2.5V-20V
600mA
40(20) Gauss
NOW
MH382/382F/382R
Driver
E/K
VK/VF/SF
4.5V-30V
300mA
40(20) Gauss
NOW
