High accuracy, high S/N Ratio, and the fastest response time in open-type current sensors.

Asahi Kasei Microdevices, the leading company of magnetic sensors, provides long-awaited current sensor products 'Currentier' based on its accumulated experience and know-how.

'Currentier' is open-type current sensors which have small package with more than 8mm of creeapage and clearance distance (compliant with UL61800-5-1), the world's highest accuracy,the highest S/N ratio, the widest measurable current range and the fastest response time (*).
With these advantages, we will offer the best current sensing solution to wide-ranging applications, such as inverter control, overcurrent detection, and electrical power detection.

* AKM's own investigation, among the open-type current sensors in the world


Clearance, Creepage distance ≧ 8.0mm
Ultra-high Accuracy
Coreless Current Sensor
supporting 60Arms

CZ-370x series

CZ-3700, CZ-3701, CZ-3702, CZ-3703, CZ-3704, CZ-3705, CZ-3706

Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-370x series coreless current sensor, which achieving both creepage distance and clearance distance greater than 8 mm.

With a wide current detection lineup from ±5.3 to ±180 Ap-p, 60 Arms, the CZ-370x series can be used for many applications including AC motors and general inverters.

  • Clearance, creepage distance 8mm or more
  • Ultra-high accuracy : 0.5%F.S. (Ta=0~90℃ Typ.)
  • Quite small primary conductor resistance: 0.27mΩTyp.
  • Fast response time : 1μs Typ.
Product
Name
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current Output
(mV) *1
CZ-3700 ±5.3 400 ±0.6 ±5.4
CZ-3701 ±10.7 200 ±4.4
CZ-3702 ±21.5 100 ±3.8
CZ-3703 ±36 60 ±3.6
CZ-3704 ±54 40 ±3.5
CZ-3705 ±86.4 25 ±3.5
CZ-3706 ±180 12 ±3.4

*1  It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 0 to 90 °C) in a certain lot.

Clearance, Creepage distance ≧ 8.0mm
Ultra-high Accuracy
Unipolar Coreless Current Sensor
supporting 60Arms

CZ-372x series

CZ-3720, CZ-3721, CZ-3722, CZ-3723, CZ-3724, CZ-3725, CZ-3726

AKM develops new CZ-372x series of coreless current sensors of the unipolar detection type suitable for power conditioners (DC side), and other applications.
When measuring current flowing in one direction, higher signal noise ratio can be achieved compared to the bipolar detection type. The main electorical properties of CZ-372x series are almost similar to those of CZ-370x series.

  • Clearance, creepage distance 8mm or more
  • High-accuracy: 1.0%F.S.(Ta=0~90℃ Typ.)
  • Low heat generation
  • Wide linear sensing range: 10.3~345.2A
Product
Name
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current Output
(mV) *1
CZ-3720 -0.4 ~ 10.3
400 ±0.6 ±5.4
CZ-3721 -0.8 ~ 20.6
200 ±4.4
CZ-3722 -1.7 ~ 41.3
100 ±3.8
CZ-3723 -2.9 ~ 68.8
60 ±3.6
CZ-3724 -4.4 ~ 103.4
40 ±3.5
CZ-3725 -7.1 ~ 165.8
25 ±3.5
CZ-3726 -14.9 ~ 345.2
12 ±3.4

*1  It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 0 to 90 °C) in a certain lot.

Clearance, Creepage distance ≧ 8.0mm
3.3V Output, High Accuracy
Coreless Current Sensor
supporting 50Arms

CZ-3A0x series

CZ-3A01, CZ-3A02, CZ-3A03, CZ-3A04, CZ-3A05, CZ-3A06, CZ-3A07

Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-3A0x series coreless current sensor, which achieves both creepage distance and clearance greater than 8mm.

With a wide current detection lineup from ±12.9 to ±129.1Ap-p, 50Arms, and two overcurrent detection circuits, the CZ-3A0x series can be used for many applications including AC motors and general-purpose inverters.

In addition, it is suitable for the systems which use 3.3V A/D converters for current sensor signal input.

  • Creepage distance, clearance 8mm or more
  • Low heat generation, 50Arms ± 12.9 ~ ± 129.1App
  • 3.3V output
  • Dual overcurrent detection function
Product
Name
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Supply
Voltage
(V)
Output
Voltage
(V)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current Output
(mV) *1
Total
Accuracy
(%F.S.) *2
Response
Time
(μs)
CZ-3A01 ±12.9 120
3.3 3.3 ±0.6 ±2.8 0.2
(Typ.)

0.4
(Max.)
1
CZ-3A02 ±15.5 100
CZ-3A03 ±22.1 70
CZ-3A04 ±32.2 48
CZ-3A05 ±64.5 24
CZ-3A06 ±103.3 15
CZ-3A07 ±129.1 12

*1  It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.

*2  The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.  In the same manner, the minimum and maximum values are defined as the “average value ± 3σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.


Clearance, Creepage distance ≧ 8.0mm
3V Output, High Accuracy
Coreless Current Sensor
supporting 50Arms

CZ-3AGx series

CZ-3AG1, CZ-3AG2, CZ-3AG3, CZ-3AG4, CZ-3AG5, CZ-3AG6, CZ-3AG7

Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-3AGx series coreless current sensor, which achieves both creepage distance and clearance greater than 8mm.

With a wide current detection lineup from ±11.6 to ±116.4Ap-p, 50Arms, and two overcurrent detection circuits, the CZ-3AGx series can be used for many applications including AC motors and general-purpose inverters.

In addition, it is suitable for the systems which use 3V A/D converters for current sensor signal input.

  • Creepage distance, clearance 8mm or more
  • Low heat generation, 50Arms ± 11.6 ~ ± 116.6 App
  • 3V output
  • Dual overcurrent detection function
Product
Name
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Supply
Voltage
(V)
Output
Voltage
(V)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current Output
(mV) *1
Total
Accuracy
(%F.S.) *2
Response
Time
(μs)
CZ-3AG1 ±11.6 120
5.0
3.0 ±0.6 ±2.8 0.2
(Typ.)

0.4
(Max.)
3.6
CZ-3AG2 ±14.0 100
CZ-3AG3 ±20.0 70
CZ-3AG4 ±29.1 48
CZ-3AG5 ±58.3 24
CZ-3AG6 ±93.3 15
CZ-3AG7 ±116.6 12

*1  It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.

*2  The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.  In the same manner, the minimum and maximum values are defined as the “average value ± 3σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.

Small-sized, High Accuracy
Coreless Current Sensor
supporting operation up to 125°C

CZ-381x series

CZ-3813, CZ-3814, CZ-3815

AKM has developed the CZ-381x series coreless current sensor, which is suitable for the systems operated at high temperature.

The CZ-381x series is an open-type current sensor using Group III-V compound semiconductor Hall sensors, which enables the high-accuracy and high-speed current sensing. Coreless ultra-small surface mount package realizes the space-saving and suppresses heat generation. The CZ-381x series can be used up to operating ambient temperature 125°C.

  • Maximam primary current: 40Arms
  • High-accuracy: 0.7%F.S. (Typ.)
  • Low temperature drift of zero-current output voltage : ±3mV (Typ.) 
  • Overcurrent detection (Programmable)
Product
Name
Operating
Ambient
Temperature
(°C)
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Temperature
Drift of
Sensitivity
(%) *1
CZ-3813 -40 to 125 ±33 60 ±0.9
CZ-3814 ±50 40
CZ-3815 ±60 33.3

*1  It is defined as the "average value ± 1σ" of the actual measurement result (Ta = -40 to 125 °C) in a certain lot.

Ultra-low Noise
Coreless Current Sensor

AK310x series

AK3101, AK3102, AK3103, AK3104, AK310H

AKM has developed ultra-low noise coreless current sensors for improving audio quality of large sized speakers such as subwoofers.

The AK310x series is suitable for a system which controls voicecoil motion in speakers (Motional Feedback) by current feedback.  This series can be used for controlling industrial motors, since it is certified to UL safety standards.

Lineup

Current Sensors

Part Number
Part Status
Package Type
(Mounting style)
Maximum 
Effective Current 
[Arms]
Linear Sensing 
Range (MIN.) 
[A]
Linear Sensing 
Range (MAX.) 
[A]
Sensitivity 
[mV/A]
Response Time 
[μsec]
Power Supply 
Voltage (MIN.) 
[V]
Power Supply 
Voltage (TYP.) 
[V]
Power Supply 
Voltage (MAX.) 
[V]
Other
Operating Temperature [℃]
Device Package
Number of Pins
AK310H
MP
SMD
20
-42
42
50
2
4.5
5.0
5.5

                                
-40 to 90
SOP
14
CZ3700
MP
SMD
60
-5.3
5.3
400
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ2235
MP
through hole type
50
-85
85
15.5
1
2.7
3.3
3.63

                                
-40 to 110
SIP
7
CQ3202
MP
SMD
20
-21.1
21.1
62.5
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CZ3725
MP
SMD
60
-7.1
165.8
25
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ330A
MP
SMD
20
-31.8
31.8
66
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ236B
MP
through hole type
50
0
25
160
1
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CZ3814
MP
SMD
40
-50
50
40
2
4.5
5.0
5.5

                                
-40 to 125
SOP
10
CQ209A
MP
SMD
20
-31.8
31.8
66
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ330E
MP
SMD
20
0
20.5
200
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ209B
MP
SMD
20
-35
0
115
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CZ3A05
MP
SMD
50
-64.5
64.5
24
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CZ3A04
MP
SMD
50
-32.2
32.2
48
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CZ3726
MP
SMD
60
-14.9
345.2
12
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CZ3703
MP
SMD
60
-36
36
60
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ2332
MP
through hole type
50
-21
21
100
1
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CQ3303
MP
SMD
20
-35
35
60
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CZ3813
MP
SMD
40
-33
33
60
2
4.5
5.0
5.5

                                
-40 to 125
SOP
10
AK3103
MP
SMD
20
-35
35
60
2
4.5
5.0
5.5

                                
-40 to 90
SOP
14
CZ3AG2
MP

                                
50
-14
14
100
3.6
4.5
5.0
5.5

                                
-40 to 85
SOP
10
CZ3706
MP
SMD
60
-180
180
12
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CZ3720
MP
SMD
60
-0.4
10.3
400
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ2065
MP
through hole type
50
-85
85
25
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ2093
MP
SMD
20
-35
35
60
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ2335
MP
through hole type
50
-85
85
25
1
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CQ320B
MP
SMD
20
-1.1
20.9
120
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CQ330G
MP
SMD
20
-4.5
4.5
450
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ2232
MP
through hole type
50
-21
21
62.5
1
2.7
3.3
3.63

                                
-40 to 110
SIP
7
CZ3702
MP
SMD
60
-21.5
21.5
100
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ206B
MP
through hole type
50
0
45
90
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ330J
MP
SMD
20
-2
42
82.7
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ3300
MP
SMD
20
-6.4
6.4
325
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CZ3AG6
MP
SMD
50
-93.3
93.3
15
3.6
4.5
5
5.5

                                
-40 to 85
SOP
10
AK3102
MP
SMD
20
-21
21
100
2
4.5
5.0
5.5

                                
-40 to 90
SOP
14
CZ3701
MP
SMD
60
-10.7
10.7
200
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ3201
MP
SMD
20
-10.1
10.1
130
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CZ3721
MP
SMD
60
-0.8
20.6
200
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CZ3722
MP
SMD
60
-1.7
41.3
100
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ3204
MP
SMD
20
-44
44
30
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CQ2234
MP
through hole type
50
-54
54
24.5
1
2.7
3.3
3.63

                                
-40 to 110
SIP
7
CQ2092
MP
SMD
20
-21
21
100
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CZ3723
MP
SMD
60
-2.9
68.8
60
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ206A
MP
through hole type
50
-46
46
45
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ2064
MP
through hole type
50
-54
54
40
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CZ3704
MP
SMD
60
-54
54
40
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ330H
MP
SMD
20
-42
42
50
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ2366
MP
through hole type
50
-170
170
12
1.5
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CZ3724
MP
SMD
60
-4.4
103.4
40
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CQ3302
MP
SMD
20
-21
21
100
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CZ3AG4
MP
SMD
50
-29.1
29.1
48
3.6
4.5
5
5.5

                                
-40 to 85
SOP
10
CZ3A07
MP
SMD
50
-129.1
129.1
12
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CQ3203
MP
SMD
20
-35.7
35.7
37
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CQ2334
MP
through hole type
50
-54
54
40
1
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CZ3705
MP
SMD
60
-86.4
86.4
25
1
4.5
5.0
5.5

                                
-40 to 105
SOP
10
CZ3AG1
MP
SMD
50
-11.6
11.6
120
3.6
4.5
5
5.5

                                
-40 to 85
SOP
10
CZ3AG5
MP
SMD
50
-58.3
58.3
24
3.6
4.5
5
5.5

                                
-40 to 85
SOP
10
CQ330F
MP
SMD
20
-2
42
80
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CZ3815
MP
SMD
40
-60
60
33.3
2
4.5
5.0
5.5

                                
-40 to 125
SOP
10
CZ3A03
MP
SMD
50
-22.1
22.1
70
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CQ330B
MP
SMD
20
0
21
195
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CQ2333
MP
through hole type
50
-35
35
60
1
4.5
5.0
5.5

                                
-40 to 110
SIP
7
CQ3200
MP
SMD
20
-8.5
8.5
155
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CQ320A
MP
SMD
20
-29.3
29.3
45
0.5
2.7
3.3
3.63

                                
-40 to 90
VSOP
10
CQ2063
MP
through hole type
50
-35
35
60
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CQ3301
MP
SMD
20
-10.7
10.7
195
0.5
4.5
5.0
5.5

                                
-40 to 90
VSOP
10
CZ3AG3
MP

                                
50
-20.0
20.0
70
3.6
4.5
5.0
5.5

                                
-40 to 85
SOP
10
CQ2233
MP
through hole type
50
-35
35
37.5
1
2.7
3.3
3.63

                                
-40 to 110
SIP
7
CZ3A02
MP
SMD
50
-15.5
15.5
100
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CQ209D
MP
SMD
20
-41
41
50
1
4.5
5.0
5.5

                                
-40 to 90
SIP
7
CZ3A01
MP
SMD
50
-12.9
12.9
120
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CZ3A06
MP
SMD
50
-103.3
103.3
15
1
3.0
3.3
3.6

                                
-40 to 85
SOP
10
CZ3AG7
MP

                                
50
-116.6
116.6
12
3.6
4.5
5.0
5.5

                                
-40 to 85
SOP
10
AK3101
MP
SMD
20
-10.7
10.7
195
2
4.5
5.0
5.5

                                
-40 to 90
SOP
14