CS15120B Current Sensor Equivalent & Substitute Parts

Part Overview

The CS15120B is an open-loop current sensor manufactured by CUI Devices, designed for bidirectional AC current measurement applications. This active product operates across a frequency range of DC to 40 kHz with a maximum sensing capacity of 15A per channel. The sensor delivers ratiometric voltage output and is housed in a through-hole module package format.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances. Alternative models within the CSXX120B series provide functional alternatives for applications where current sensing requirements differ from the primary specification.

Substiute Parts

CS15120B

CUI DevicesIn Stock: 1148CS15120B Datasheet

Current PartRFQ

CS10120B

CUI DevicesIn Stock: 1212CS10120B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS15120B is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Sensor Type: Open Loop
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Frequency Range: DC ~ 40 kHz
• Linearity: ±0.5%
• Accuracy: ±2.4%
• Supply Voltage: ±11.4V ~ 12.6V
• Response Time: 3 µs
• Maximum Supply Current: 25 mA
• Operating Temperature Range: -10°C ~ 75°C
• Polarization: Bidirectional
• Mounting Type: Through Hole
• Package Type: Module
• Series: CSXX120B

Variable Parameter:

• Current Sensing Range: Substitutes may differ in rated current capacity while maintaining all other electrical and mechanical specifications.

The CS10120B qualifies as a parametric equivalent because it maintains identical performance across all mandatory parameters while offering a reduced current sensing capacity of 10A instead of 15A.

Parameter Comparison

Engineering Selection Recommendations

Both the CS15120B and CS10120B are active products manufactured by CUI Devices and maintain full compliance with ROHS3 and REACH regulatory requirements. Selection between these parts is determined by the maximum current measurement requirement of the application circuit.

The CS15120B is the primary selection for applications requiring current sensing up to 15A. The CS10120B serves as a substitute only when the application circuit operates within a maximum current range of 10A or lower. Both parts deliver identical electrical performance characteristics, including response time, accuracy, linearity, and frequency response across their respective current ranges.

Component selection must be based on the actual maximum current that will be measured in the application. Selecting a part with insufficient current rating will result in measurement saturation and loss of signal fidelity. Selecting a part with excess current rating capacity does not degrade performance but may introduce unnecessary cost considerations.

Frequently Asked Questions (FAQ)

Q: Can the CS10120B be used in place of the CS15120B?

A: The CS10120B is a functional substitute only for applications where the maximum measured current does not exceed 10A. All electrical performance parameters, including accuracy, linearity, response time, and frequency response, are identical. If the application requires measurement of currents between 10A and 15A, the CS15120B is the required selection.

Q: Are the mounting footprints identical between CS15120B and CS10120B?

A: Both parts are through-hole mounted modules within the CSXX120B series. Mechanical compatibility is maintained for PCB layout purposes.

Q: Do both parts require identical supply voltage?

A: Yes. Both the CS15120B and CS10120B operate with a supply voltage range of ±11.4V to 12.6V. Power supply design and filtering requirements are identical for both parts.

Q: What is the primary difference between these two sensors?

A: The sole difference is the maximum current sensing capacity. The CS15120B measures currents up to 15A, while the CS10120B measures currents up to 10A. All other specifications, including output characteristics, frequency response, accuracy, and operating conditions, are identical.

Q: Are there any temperature or frequency limitations that differ between these parts?

A: No. Both parts operate across the identical temperature range of -10°C to 75°C and frequency range of DC to 40 kHz. Operating conditions are equivalent.

Q: Can these parts be used interchangeably in bidirectional current measurement applications?

A: Yes, provided the application current does not exceed the rated capacity of the selected part. Both parts support bidirectional current measurement with identical ratiometric voltage output characteristics.