Bulk Indium BH-850
Ultra Low Field
Description
Hall
Sensors
13
Hall
Sensors
Ideal for applications such as the construction of solid state compasses,
the BH-850 offers high sensitivity for very low magnetic fields at a relatively low cost.
Features
• High Sensitivity
• Rugged construction
Mechanical Specifications
a. Leads
b. Material: AWG 34 Stranded (7x42) Silver Plated Copper, Thin Wall Teflon Insulation.
c. Color Code
Red (+ l
c
)
Black (- l
c
)
d. Control Current (l
c
):
Blue (+ V
H
)
Yellow (- V
H
)
e. Hall Voltage (V
H
):
f. Polarity: With field direction as shown and l
c
entering the red lead,
the positive Hall voltage will appear at the blue lead.
Electrical Specifications
SPECIFICATIONS
Input resistance, R
in
Output resistance, R
out
Magnetic sensitivity, V
H
Max. resistive residual
voltage, V
M
@ B=0, I
c
= I
cn
Max. control current @ 25°C, static air
Nominal control current, I
cn
Mean temperature coefficient of
V
H
(-20°C to +80°C)
Temperature dependence of resistive
residual voltage (-20°C to +80°C)
Operating temperature range
Storage temperature range
UNITS
ohms
ohms
mV/G
µV
mA
mA
%/°C
µV/°C
°C
°C
B-850
3.5 max.
3.5 max.
18 min.
±190 max.
300
200
- 0.18
±2.5
- 55 to +85
- 55 to +85
6120 Hanging Moss Road • Orlando, Florida 32807 •
www.fwbell.com
Phone (407) 678-6900 • Fax (407) 677-5765 • Toll Free (800) 778-6117
Rev. date 04/2003
Mechanical
Dimensions
All dimensions are in inches
Hall
Sensors
Model
BH-850
Typical Output Characteristic
I
C
= 200 mA
40
20
-3
-2
-1
-20
-40
1
2
3
B, gauss
-60
Field direction for positive (+B)
7
3 8
"
.460"
9.0"
.250"
Note:
Due to continuous process improvement, all specifications are subject to change without notice.
6120 Hanging Moss Road • Orlando, Florida 32807 •
www.fwbell.com
Phone (407) 678-6900 • Fax (407) 677-5765 • Toll Free (800) 778-6117
Rev. date 04/2003
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