CS2012B Current Sensor Equivalent & Substitute Parts

Part Overview

The CS2012B is an open-loop current sensor manufactured by CUI Devices, rated for 20A bidirectional AC current measurement. This active product operates with a 12V supply and delivers ratiometric voltage output suitable for embedded measurement applications. The sensor is packaged as a through-hole module with ROHS3 compliance and is currently in active production status with 682 units in stock.

Substitute parts are identified when design requirements necessitate alternative current-sensing ranges while maintaining compatibility with the same supply voltage, output type, frequency response, and mechanical form factor. The CS2012B belongs to the CSXX12B series, which provides multiple current-sensing options across a standardized platform.

Key Parameters

Parameter	Value
Manufacturer Part Number	CS2012B
Manufacturer	CUI Devices
Series	CSXX12B
Current Sensing Range	20A
Sensor Type	Open Loop
Polarization	Bidirectional
Output Type	Ratiometric, Voltage
Number of Channels	1
Frequency Response	DC ~ 40kHz
Supply Voltage	11.4V ~ 12.6V
Linearity	±0.5%
Accuracy	±4.2%
Response Time	3µs
Supply Current (Max)	25mA
Operating Temperature	-10°C ~ 75°C
Mounting Type	Through Hole
Package Type	Module
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CS2012B are selected from the CSXX12B series based on the following substitution criteria:

Maintained Parameters (Identical Across All Substitutes):

Sensor type: Open loop
Polarization: Bidirectional
Output configuration: Ratiometric, voltage
Number of channels: 1
Frequency response: DC ~ 40kHz
Supply voltage range: 11.4V ~ 12.6V
Linearity: ±0.5%
Accuracy: ±4.2%
Response time: 3µs
Supply current maximum: 25mA
Operating temperature: -10°C ~ 75°C
Mounting type: Through hole
Package type: Module
RoHS compliance: ROHS3 Compliant

Variable Parameter (Substitution Basis):

Current sensing range: 3A, 5A, 10A, or 20A

Substitution is valid when the application current requirement does not exceed the rated sensing range of the alternative part. All substitute parts operate within the same electrical and mechanical specifications, ensuring direct compatibility in systems designed for the CSXX12B series platform.

Parameter Comparison

Parameter	CS2012B	CS1012B	CS0512B	CS0312B
Manufacturer	CUI Devices	CUI Devices	CUI Devices	CUI Devices
Series	CSXX12B	CSXX12B	CSXX12B	CSXX12B
Current Sensing Range	20A	10A	5A	3A
Sensor Type	Open Loop	Open Loop	Open Loop	Open Loop
Polarization	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Output Type	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage
Number of Channels	1	1	1	1
Frequency Response	DC ~ 40kHz	DC ~ 40kHz	DC ~ 40kHz	DC ~ 40kHz
Supply Voltage	11.4V ~ 12.6V	11.4V ~ 12.6V	11.4V ~ 12.6V	11.4V ~ 12.6V
Linearity	±0.5%	±0.5%	±0.5%	±0.5%
Accuracy	±4.2%	±4.2%	±4.2%	±4.2%
Response Time	3µs	3µs	3µs	3µs
Supply Current (Max)	25mA	25mA	25mA	25mA
Operating Temperature	-10°C ~ 75°C	-10°C ~ 75°C	-10°C ~ 75°C	-10°C ~ 75°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Module	Module	Module	Module
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed—CS1012B, CS0512B, and CS0312B—are active products manufactured by CUI Devices with ROHS3 compliance and REACH unaffected status. Selection between these parts and the CS2012B is determined solely by the maximum current measurement requirement of the application.

Selection Criteria:

CS2012B (20A): Select when application current measurement range extends to 20A
CS1012B (10A): Select when application current measurement range extends to 10A
CS0512B (5A): Select when application current measurement range extends to 5A
CS0312B (3A): Select when application current measurement range extends to 3A

All parts share identical electrical performance characteristics, supply voltage requirements, output signal conditioning, frequency response, and thermal operating range. Mechanical compatibility is assured through standardized through-hole mounting and module packaging across the CSXX12B series. No design modifications are required when substituting between these parts, provided the selected current range accommodates the application's maximum current measurement requirement.

Frequently Asked Questions (FAQ)

Q: Can CS0312B, CS0512B, or CS1012B be used as direct replacements for CS2012B?

A: Direct replacement is valid only if the application's maximum current measurement requirement does not exceed the substitute part's rated sensing range. All parts maintain identical electrical specifications, supply voltage compatibility, output type, and mechanical form factor. If the application requires measurement of currents exceeding the substitute part's rating, the CS2012B must be retained.

Q: What is the primary difference between CS2012B and its substitute parts?

A: The sole difference is the current sensing range. CS2012B measures up to 20A, CS1012B up to 10A, CS0512B up to 5A, and CS0312B up to 3A. All other parameters—including frequency response, accuracy, linearity, supply voltage, output type, and response time—are identical.

Q: Are all substitute parts available in the same packaging?

A: Yes. CS2012B, CS1012B, CS0512B, and CS0312B are all supplied in tray packaging as through-hole modules. No packaging conversion or mechanical adaptation is required for substitution.

Q: Do substitute parts require different PCB layouts or connector configurations?

A: No. All parts in the CSXX12B series use identical through-hole mounting and module packaging. PCB layouts and connector configurations remain unchanged when substituting between these parts.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all substitutions within the CSXX12B series.

Q: Can a lower-rated part substitute for CS2012B in an application measuring 15A?

A: No. CS1012B (10A maximum) cannot measure 15A currents. The CS2012B must be used for applications requiring measurement of currents between 10A and 20A.

Q: Are there differences in supply current consumption between substitute parts?

A: No. All parts consume a maximum of 25mA supply current. Power supply design remains unchanged when substituting between these parts.

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