Nikkoshi Co., Ltd. MR sensor(Magnetoresistive sensor) information at MRsensor.com（MRS-137）

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Electronic parts department
TEL81-3-6362-8851

Products introduction

MR Sensor
MRS-137A

Sample(s) can be ordered here.

Sample Price (Japanese yen)
1p/lot	500p/lot	1000p/lot
4,000	2,200	2,000

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This sensor is made from InSb magnetic resistance. That resistance value changes by the magnetic field and the permanent magnet which gives this sensor magnetic bias. When a magnetic substance approaches the detection side, an output signal can be received because the magnetic flux density which affects the magnetic resistance changes and the resistance value of this senser is changed. And, this is the model which hardly suffers the influence of the position precision of the carriage.

Feature

A magnetic resistance element is an InSb mono-crystal. That sensitivity and the ratio of S/N are high.
It can be detected even if detected material doesn't stick to the detection side
Output doesn't depend on the movement speed of the magnetic body, and it can detect a stationary body.
A detection part is pure resistance, and hardly catches guidance noise.
Magnetic data can be detected in the wider range (width 9mm).

Absolute Maximum Rating (Ta=25C)

Item	Symbol	Standard Value	Unit
Excitation,Maximum	Vamax	5.5	V
Withstand Voltage	VI	100	V
Allowable Loss	PD	44	mW
Operation Environmental Temperature	Topg	-30 ～ +85	℃
Preserved Environmental Temperature	Tstg	-30 ～ +85	℃

Electrical Property (Ta=25C)

Item	Symbol	Condition	min.	Typ.	Max.	Unit
Output voltage	VOUT	Va=5V *1	0.16		0.42	mVrms
Resistance balance	d	I=1mA *2			30	%
Input resistance	R	I=1mA	800	－	3500	Ω
Voltage Noise	VNW	Va=5V			50	μVP-P
Piezo Noise	VNP	Va=5V押圧10g			300	μVP-P
Magnetic Flux Density	B			0.11 (S Pole)		T
Detection Width	W			9		mm

*1 Input uses the magnetic flux which occurs when it is charged with current of 50Hz, 100mA(rms) in the line of φ 0.1mm.
*2 d =|MR1-MR2|/MR1（or MR2）*100

Internal Circuit Figure

Contour Measure Figure

# The product specifications and the appearance are possibility of changing without notice.

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