CS1012U Current Sensor Equivalent & Substitute Parts

Part Overview

The CS1012U is an active, open-loop current sensor manufactured by CUI Devices, designed for AC current measurement applications. This unidirectional module provides ratiometric voltage output with a 10A sensing range and operates across a frequency spectrum of DC to 40kHz. The part is ROHS3 compliant and REACH unaffected, confirming its suitability for modern electronic applications. Substitute parts are identified within the same CSXX12U series to accommodate applications requiring different current-sensing ranges while maintaining electrical and mechanical compatibility.

Substiute Parts

CS1012U

CUI DevicesIn Stock: 840CS1012U Datasheet

Current PartRFQ

CS0312U

CUI DevicesIn Stock: 1166CS0312U Datasheet

Parametric EquivalentRFQ

CS0512U

CUI DevicesIn Stock: 928CS0512U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS1012U are identified based on strict parametric equivalence within the CSXX12U series. The substitution logic is determined by the following invariant parameters that must remain constant across all equivalent parts:

Invariant Parameters (Must Match):

• Manufacturer: CUI Devices
• Series: CSXX12U
• Sensor Type: Open Loop
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Frequency Range: DC ~ 40kHz
• Linearity: ±0.5%
• Accuracy: ±1.9%
• Supply Voltage: 11.4V ~ 12.6V
• Response Time: 3µs
• Maximum Supply Current: 25mA
• Operating Temperature Range: -10°C ~ 75°C
• Polarization: Unidirectional
• Mounting Type: Through Hole
• Package Type: Module
• Packaging Format: Tray
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Variable Parameter (Differentiates Substitutes):

• Current Sensing Range: 3A, 5A, or 10A

The CS1012U (10A) can be substituted with CS0512U (5A) or CS0312U (3A) when the application current requirements are within the lower sensing ranges. Conversely, the CS0312U and CS0512U cannot be substituted with the CS1012U if the application requires measurement of currents exceeding their respective sensing limits.

Parameter Comparison

Engineering Selection Recommendations

All three parts—CS1012U, CS0512U, and CS0312U—maintain active product status with identical compliance certifications. Each part is ROHS3 compliant and REACH unaffected, confirming regulatory alignment for deployment in regulated industries and markets.

Selection between these parts is determined solely by the maximum AC current magnitude required in the application circuit. The CS1012U provides full-scale measurement capability to 10A. The CS0512U operates with a maximum sensing range of 5A, and the CS0312U operates with a maximum sensing range of 3A. All three parts deliver identical output characteristics, frequency response, accuracy, and thermal performance within their respective current measurement ranges.

For applications where the measured current does not exceed 5A, either the CS0512U or CS1012U may be selected. For applications where the measured current does not exceed 3A, any of the three parts may be selected. The choice between parts of equivalent capability should be based on application current requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the CS0312U or CS0512U be used in place of the CS1012U?

A: The CS0312U and CS0512U are parametric equivalents to the CS1012U with identical electrical and mechanical characteristics. However, these parts have lower current sensing ranges (3A and 5A respectively). They can be used only in applications where the measured current does not exceed their respective maximum sensing ranges. If the application requires measurement of currents exceeding 5A, the CS1012U must be used.

Q: Can the CS1012U be used in place of the CS0512U or CS0312U?

A: Yes. The CS1012U can be substituted for either the CS0512U or CS0312U in any application. The CS1012U provides a higher current sensing range and maintains all other electrical and mechanical parameters. No circuit modifications are required.

Q: Are there differences in output voltage or signal conditioning between these parts?

A: No. All three parts deliver ratiometric voltage output with identical accuracy (±1.9%), linearity (±0.5%), and response time (3µs). The output signal conditioning is identical across all parts.

Q: Do these parts require different supply voltages?

A: No. All three parts operate with the same supply voltage range of 11.4V to 12.6V and draw identical maximum supply current of 25mA.

Q: Are the mounting and package specifications identical?

A: Yes. All three parts use through-hole mounting, are packaged as modules in tray format, and are mechanically interchangeable on PCBs designed for the CSXX12U series.

Q: What is the frequency response capability of these sensors?

A: All three parts operate across the frequency range of DC to 40kHz, enabling measurement of both direct current and AC current up to 40kHz.

Q: Are there temperature-related performance differences between these parts?

A: No. All three parts operate across the identical temperature range of -10°C to 75°C with no specified performance degradation within this range.

Q: Do all three parts meet the same regulatory compliance standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, confirming identical regulatory status for use in regulated applications and markets.