Siemens FP412L100 Datasheet

Differential Magneto Resistor FP 412 L 100

Dimensions in mm

Features

• Accurate intercenter spacing

• High operating temperature range

• High output voltage

• Signal amplitude independent of speed

• Compact construction

Typical applications

• Detection of speed

• Detection of position

• Detection of sense of rotation

• Angular encoders

• Linear position sensing

• Available in strip form for automatic
assembly

Type Ordering Code

FP 412 L 100 Q65412-L100

Semiconductor Group 1 07.96

FP 412 L 100

The differential magneto resistor FP 412 L 100 is a magnetically variable resistor in L­type InSb/NiSb semiconductor material. The MR is glued onto a ferrite substrate and is
supplied in a "MICROPACK" copper/polyimide film package. The basic resistance of
each of the magneto resistors is 100 Ω. The series coupled MRs are actuated by an
external magnetic field or can be biased by a permanent magnet and actuated by a soft
iron target.

Maximum ratings
Parameter Symbol Value Unit

Operating temperature
Storage temperature
Power dissipation
Supply voltage

1)

2)

(B = 0.2 T) V

Thermal conductivity
–attached to heatsink
–in still air

Characteristics (

T

= 25 °C)

A

Basic resistance

I ≤ 1 mA, B = 0 T)

(

Center symmetry

3)

4)

Relative resistance change

R

= R

0

, at B = 0 T

01-3

B = ± 0.3 T
B = ± 1 T

T
T
P

G
G

R

M
R

A

stg

tot

IN

th case
th A

01-3

B/R0

– 40 / + 175 °C
– 40 / + 185 °C
1000 mW
10 V

mW/K
≥ 20
2

150…250 Ω

≤ 10 %

> 1.7

–
> 7

Temperature coefficient

TC
B = 0 T
B = ± 0.3 T
B = ± 1 T

1) Corresponding to diagram P

2) Corresponding to diagram

3) 1 T = 1 Tesla = 10

4)

M

R

--------------------------------=

01 2–

R

4

Gauss

–

01 2–

R

02 3–

Semiconductor Group 2

= f(T

tot

V

= f(T

IN

× 100% for R

case
case

)
)

> R

01-2

02-3

R

– 0.16
– 0.38
– 0.54

%/K
%/K
%/K