Magnetic Direct Current Sensor MDCS
Outline
Magnetic direct current sensors (MDCS) use a magnetic
substance and hole device for magnetic detection of
direct current. They detect all currents (DC, AC and
pulse), and the output voltage varies in proportion to the
strength of the current measured.
Features
• Detection of both direct currents and alternating cur-
rents (including pulse currents)
• Fluctuations in output from changes in the power
supply voltage and the ambient temperature are small.
• Excellent linearity of measured current and the con-
verted power output
• The measured current and the secondary output side are
insulated.
Applications
• Inverter-based home appliances (air-conditioners, re-
frigerators, washing machines, etc.)
• General-purpose inverters • Servo motors
• Industrial machines
• Automobiles
• FAX and other multifunction telephone series (THS Series)
●
MA12, SB15, KB15, MB15
Rated value and conditions (Ta=25˚C)
Item
Marking
Single power supply operating type
Model
Rated current
Output voltage
Offset voltage
(remaining voltage)
Vh linearity
Power supply voltage
Power supply input current
Pulse response
Vh temperature characteristics
Vo temperature characteristics
Insulation withstand voltage
Insulation resistance
Operating temperature range
Storage temperature range
Primary side windings*
Comments
(%)
(V)
(mA)
(µs)
max.
max.
15 (di/dt = 200AT/µs)
±2.0
(at +160AT)
±2.0
15 (di/dt = 200AT/µs)
±4.0
(at
±40AT)
±4.0
Vcc
Within
±1%
+15±10%
±3%
+12±5%
±15±
5%
40
15 (di/dt = 200AT/µs)
±8.0
(at
±100AT)
±5.0
AC2000V for 1 minute at 50/60 Hz
Leakage current within 5 mA (Between pass-through side and connectors)
(MΩ) min.
(˚C)
(˚C)
Ta
Ts
500 (500VDC) (Between pass-through side and connectors)
-10 to +80
-15 to +85
15 (di/dt = 100AT/µs)
±8.0
(at
±50AT)
±8.0
±5.0
(at
±40AT)
±4.0
Within±1%
±15±10%
±3%
±15±5%
(AT)
(V)
If
Vh
KA15D
-160 to +160
+4.500±0.050 (If = +160AT)
+0.500±0.050 (If = -160AT)
(V)
Vo
+2.500±0.050 (If = 0AT)
MA12
-40 to +40
+4.500±0.080 (If = +40AT)
+0.500±0.080 (If = -40AT)
+2.500±0.060 (If = 0AT)
SBI5
-100 to +100
+4.000±0.080 (If = +100AT)
-4.000±0.080 (If = -100AT)
±0.060
(If = 0AT)
Amplifier built-in type
Double power supply operating type
KBI5
-50 to +50
+5.000±0.100 (If = +50AT)
-5.000±0.100 (If = -50AT)
±0.100
(If = 0AT)
MBI5
-40 to +40
+4.000±0.120 (If = +40AT)
-4.000±0.120 (If = -40AT)
±0.120
(If = 0AT)
(mV / ˚C) max.
(mV / ˚C) max.
(V)
φ
1.0 mm /8 turns
φ
1.0 mm /4 turns
–
Positive/negative output
φ
1.0 mm /5 turns
φ
1.0 mm /4 turns
*Besides the standard windings (8 turns), any other windings within the rated current are possible. *The rated current unit AT is designated as the primary side
current (A)
✕
number of turns (Turn).
NEC TOKIN Sensors Vol.1 21
●
THS56,56F,65,63F
Electrical Characteristics (Ta=25
°
C, Vcc=+5V)
Item
56,65
Sensitivity current
(mA)
56F,63F
Primary side input current (mA)
Input direct current resistance
(Ω)
56,56F,63F,65
56
56F,63F,65
56
56F,63F,65
(V)
(
µ
S)
(V)
56,56F,65
63F
56,56F,63F,65
56,65
Loss
"Analog"
out put
S/N
(dB)
63F
(dB)
56F
63F
56,56F,65
Input level(Vin)
–45~+20dBm
15
Input level(Vin)
–45~0dBm
lin=0 ~120mA
1kHz,60Ω
lin offset
lin=0
B=1×10
-3
T
30
30
-2
Lin
V
OH
V
OL
ton-off
RL=
Ta=–10˚C~+70˚C
Marking
I
L
l
H
l
L
l
H
lin
Rin
Ta=–10˚C~+70˚C
-120
2.5
2.5
0.8
0.8
RL=10kΩ
3.5
0.1
0.8
3.5
3.9
1.0
1.1
Ta=+5˚C~+45˚C
Conditions
Rating
min.
2
15
5
10
120
4.5
5.0
1.2
1.4
-10˚C ~ +70˚C
typ.
max.
Comments
Input inductance
(mH)
Output voltage
Response
∞
+4.5
60
Power supply voltage
Vcc
+5.5
10
12
3
34
33
0
38
36
2
Consumption current
(mA)
lcc
Effect of external magnetic field
(mA)
Maximum Rating
Item
Power supply voltage
Primary side input current
(A)
Withstand voltage between
primary and secondary
Operating temperature range
Storage temperature range
(V)
56,56F,63F,65
(kVAC) min.
(
°
C)
(
°
C)
Topt.
Tstg.
Marking
V
CC
lin
Rating
7.0
0.5
2.2
–10 ~ +70
–20 ~ +80
10sec. max.
60sec. 50Hz RH=65±5%
Comments
Input Current - Output Voltage Characteristics
Output voltage
V (V)
0
Vo
H
Out 2
Vo
L
–l
H
–l
L
0
+l
L
+l
H
Out 1
l
l N
(
mA
)
Input current
22 NEC TOKIN Sensors Vol.1
Before Using Magnetic Direct Current Sensor MDCS
• Strong physical shocks could damage cores. Be careful not to drop or apply other strong impact.
• These products are heat resistant up to 260°C for 10 seconds. Be careful not to exceed this amount when
soldering. Use a low-corrosion type flux when soldering.
• Because the circuit uses ICs, application of strong static electricity could cause damage. Take static electricity
precautions when handling.
• Because these products are magnetic current detectors, application of strong external magnetic fields could
cause their characteristics to change. Limit ambient magnetic fields to 50e or less.
24 NEC TOKIN Sensors Vol.1
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