CT40x

Contact & Contactless Current Sensors

High resolution, high accuracy and fast response time for isolated current sensing. TMR sensor technology provides stability over temperature with market leading accuracy.

Data Sheets

Product features and performance

500 kHz Bandwidth
Immunity to Common Mode Fields
±3% Max Total Error from -40°C to 125°C
Up to +/-65 A

CT4021

Contact Current Sensor
SOIC-8 Package

CT4032

Contact Current Sensor
SOICW-16 Package

CT4051

Contactless Current Sensor
TSSOP-8 Package

Current Range:

Sensitivity:

Sensor Polarity:

Typ. Total Error:

Auto Grade:

Part Order Number	Current Range	Sensitivity (mV/V/mT)	VOQ (V)	VCC (V)	Polarity	Typ. Total Error	Max. Total Error	VREF Output	Filter	Fault# for OCD	CMFRR (dB)	Response Time (ns)	Auto Grade	Operating Temperature Range	Package	See Inventory
CT433-ASWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF20DR
CT433-ASWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF20MR
CT433-ASWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF30DR
CT433-ASWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF30MR
CT433-ASWF40MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF40MR
CT433-ASWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF50DR
CT433-ASWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF50MR
CT433-ASWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF65DR
CT433-ASWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT433-ASWF65MR
CT433-HSWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF20DR
CT433-HSWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF20MR
CT433-HSWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF30DR
CT433-HSWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF30MR
CT433-HSWF40MR	-40 A to +40 A	25.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF40MR
CT433-HSWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF50DR
CT433-HSWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF50MR
CT433-HSWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF65DR
CT433-HSWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT433-HSWF65MR
CT432-ASWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF20DR
CT432-ASWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF20MR
CT432-ASWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF30DR
CT432-ASWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF30MR
CT432-ASWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF50DR
CT432-ASWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF50MR
CT432-ASWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF65DR
CT432-ASWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT432-ASWF65MR
CT432-HSWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF20DR
CT432-HSWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF20MR
CT432-HSWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF30DR
CT432-HSWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF30MR
CT432-HSWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF50DR
CT432-HSWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF50MR
CT432-HSWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF65DR
CT432-HSWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT432-HSWF65MR
CT430-ASWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF20DR
CT430-ASWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF20MR
CT430-ASWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF30DR
CT430-ASWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF30MR
CT430-ASWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF50DR
CT430-ASWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF50MR
CT430-ASWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF65DR
CT430-ASWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100 Grade1	-40°C to +125°C	SOICW-16	See CT430-ASWF65MR
CT430-HSWF20DR	0 A to +20 A	200.0	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF20DR
CT430-HSWF20MR	-20 A to +20 A	100.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF20MR
CT430-HSWF30DR	0 A to +30 A	133.3	0.50	5.0	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF30DR
CT430-HSWF30MR	-30 A to +30 A	66.7	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF30MR
CT430-HSWF50DR	0 A to +50 A	80.0	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF50DR
CT430-HSWF50MR	-50 A to +50 A	40.0	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF50MR
CT430-HSWF65DR	0 A to +65 A	61.5	0.50	5.0	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF65DR
CT430-HSWF65MR	-65 A to +65 A	30.8	2.50	5.0	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT430-HSWF65MR
CT431-HSWF20DR	0 A to +20 A	100.0	0.65	3.3	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF20DR
CT431-HSWF20MR	-20 A to +20 A	50.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF20MR
CT431-HSWF30DR	0 A to +30 A	66.7	0.65	3.3	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF30DR
CT431-HSWF30MR	-30 A to +30 A	33.3	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF30MR
CT431-HSWF40MR	-40 A to +40 A	25.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF40MR
CT431-HSWF50DR	0 A to +50 A	40.0	0.65	3.3	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF50DR
CT431-HSWF50MR	-50 A to +50 A	20.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF50MR
CT431-HSWF65DR	0 A to +65 A	30.8	0.65	3.3	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF65DR
CT431-HSWF65MR	-65 A to +65 A	15.4	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	-	-40°C to +125°C	SOICW-16	See CT431-HSWF65MR
CT431-ASWF20DR	0 A to +20 A	100.0	0.65	3.3	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF20DR
CT431-ASWF20MR	-20 A to +20 A	50.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF20MR
CT431-ASWF30DR	0 A to +30 A	66.7	0.65	3.3	Unipolar	±0.7% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF30DR
CT431-ASWF30MR	-30 A to +30 A	33.3	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF30MR
CT431-ASWF50DR	0 A to +50 A	40.0	0.65	3.3	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF50DR
CT431-ASWF50MR	-50 A to +50 A	20.0	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF50MR
CT431-ASWF65DR	0 A to +65 A	30.8	0.65	3.3	Unipolar	±0.7% FS	<±1.5% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF65DR
CT431-ASWF65MR	-65 A to +65 A	15.4	1.65	3.3	Bipolar	±0.5% FS	<±1.0% FS	Yes	Yes	Yes	-54.00	300	AEC-Q100	-40°C to +125°C	SOICW-16	See CT431-ASWF65MR
	Current Range	Sensitivity (mV/V/mT)			Polarity	Typ. Total Error							Auto Grade

Products

CT40x

High resolution, high accuracy and fast response time for isolated current sensing. TMR sensor technology provides stability over temperature with market leading accuracy.

Data Sheets

Product features and performance

CT4021

CT4032

CT4051

Contact us to learn more about how we are Advancing
Intelligence in Sensing with XtremeSense^® TMR technology

© 2023 Crocus Technology, Inc. All rights reserved.

Products

CT40x

High resolution, high accuracy and fast response time for isolated current sensing. TMR sensor technology provides stability over temperature with market leading accuracy.

Data Sheets

Product features and performance​

CT4021

CT4032

CT4051

Contact us to learn more about how we are AdvancingIntelligence in Sensing with XtremeSense® TMR technology ​

Subscribe to our newsletter

© 2023 Crocus Technology, Inc. All rights reserved.

Product features and performance

Contact us to learn more about how we are Advancing
Intelligence in Sensing with XtremeSense^® TMR technology