CS2050BL Current Sensor Equivalent & Substitute Parts

Part Overview

The CS2050BL is an active open-loop current sensor manufactured by CUI Devices, designed for bidirectional AC current measurement applications. This module provides ratiometric voltage output with a 20A sensing range and operates across a frequency spectrum from DC to 55kHz. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified when application requirements differ in current-sensing range while maintaining compatibility across electrical performance, output characteristics, and mechanical specifications.

Substiute Parts

CS2050BL

CUI DevicesIn Stock: 874CS2050BL Datasheet

Current PartRFQ

CS0350BL

CUI DevicesIn Stock: 1030CS0350BL Datasheet

Parametric EquivalentRFQ

CS0550BL

CUI DevicesIn Stock: 843CS0550BL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts within the CSXX50BL series are qualified based on identical electrical performance characteristics and mechanical compatibility. The substitution logic is determined by the following parameters that remain constant across all qualified alternatives:

Fixed Parameters (Identical Across All Substitutes):

• Sensor Type: Open Loop
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Frequency Range: DC ~ 55kHz
• Linearity: ±0.5%
• Accuracy: ±4.9%
• Voltage - Supply: ±4.75V ~ 5.25V
• Response Time: 7µs
• Current - Supply (Max): 25mA
• Operating Temperature: -10°C ~ 70°C
• Polarization: Bidirectional
• Mounting Type: Through Hole
• Package / Case: Module
• Packaging: Tray
• Product Status: Active
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Variable Parameter (Differentiates Substitutes):

• Current - Sensing: 3A, 5A, or 20A

Substitution is valid when the application current measurement requirement falls within the specified sensing range of the alternative part while all other electrical and mechanical parameters remain compatible with the circuit design.

Parameter Comparison

Engineering Selection Recommendations

All three parts—CS2050BL, CS0550BL, and CS0350BL—maintain active product status with identical compliance certifications. Each part carries full RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.

Selection between these parts is determined solely by the maximum current measurement requirement of the application circuit. The CS2050BL accommodates measurement up to 20A, the CS0550BL up to 5A, and the CS0350BL up to 3A. All three parts deliver identical electrical performance characteristics including linearity, accuracy, frequency response, and supply voltage specifications.

For applications requiring current measurement below the 20A range of the CS2050BL, the lower-rated alternatives provide equivalent functionality with identical output characteristics and mechanical compatibility. No performance degradation occurs when selecting a substitute part rated for the application's actual current measurement requirement.

Frequently Asked Questions (FAQ)

Q: Can CS0550BL or CS0350BL be used as direct replacements for CS2050BL?

A: Direct substitution is valid only when the application current measurement requirement does not exceed the substitute part's sensing range. CS0550BL is suitable for applications measuring up to 5A, and CS0350BL for applications measuring up to 3A. If the circuit requires measurement of currents exceeding these thresholds, the CS2050BL must be retained.

Q: Are the output voltage characteristics identical across all three parts?

A: Yes. All three parts provide ratiometric voltage output with identical linearity (±0.5%), accuracy (±4.9%), and response time (7µs). The output scaling differs based on the current-sensing range, but the output type and electrical characteristics remain constant.

Q: Do all three parts share the same supply voltage requirements?

A: Yes. CS2050BL, CS0550BL, and CS0350BL all operate with a supply voltage range of ±4.75V to 5.25V and draw a maximum of 25mA. No power supply modifications are required when substituting between these parts.

Q: Are there any differences in mounting or packaging between these parts?

A: No. All three parts use through-hole mounting, module package type, and tray packaging. PCB layout and mechanical integration remain identical across all substitutes.

Q: What is the frequency response capability across all three parts?

A: All three parts operate across the identical frequency range of DC to 55kHz, supporting both DC and AC current measurement applications without frequency-dependent limitations.

Q: Do all parts operate across the same temperature range?

A: Yes. CS2050BL, CS0550BL, and CS0350BL all operate from -10°C to 70°C, ensuring thermal compatibility across applications.

Q: Are there inventory considerations when selecting between these parts?

A: Inventory availability is independent of substitution eligibility. Selection should be based on application current measurement requirements and circuit compatibility, not on stock levels.