ACS706ELC-05C Current Sensor - Equivalent & Substitute Parts

Part Overview

The ACS706ELC-05C is a Hall Effect current sensor manufactured by Allegro MicroSystems, designed for AC/DC current measurement applications requiring 5A sensing capability. This component features open-loop bidirectional operation with ratiometric voltage output, making it suitable for industrial and consumer electronics applications requiring precise current monitoring.

The ACS706ELC-05C is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this sensor.

Substiute Parts

ACS706ELC-05C

Allegro MicroSystemsIn Stock: 936ACS706ELC-05C Datasheet

Current PartRFQ

ACS712ELCTR-20A-T

Allegro MicroSystemsIn Stock: 72485ACS712ELCTR-20A-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACS706ELC-05C is determined by the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

• Sensor Type: Hall Effect, Open Loop
• Measurement Type: AC/DC
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Supply Voltage: 5V
• Package Type: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Polarization: Bidirectional

Allowable Variation Parameters:

• Current Sensing Range: May differ based on application requirements
• Sensitivity: Varies inversely with current range
• Frequency Range: May be higher or lower depending on application bandwidth
• Linearity and Accuracy: May vary within acceptable engineering tolerances
• Response Time: May be faster or comparable
• Supply Current: May vary within reasonable operating limits
• Operating Temperature Range: Must encompass or match the original specification
• RoHS and Compliance Status: Must maintain or exceed compliance level

The ACS712ELCTR-20A-T qualifies as a substitute based on these parameters, offering a higher current sensing range (20A) while maintaining the same package, output type, supply voltage, and core sensor architecture.

Parameter Comparison

Engineering Selection Recommendations

The ACS712ELCTR-20A-T serves as a direct substitute for the ACS706ELC-05C in applications where the increased current sensing range (20A versus 5A) is compatible with system requirements. Both components maintain ROHS3 compliance and identical operating temperature specifications.

Key considerations for substitution:

Sensitivity Trade-off: The ACS712ELCTR-20A-T exhibits lower sensitivity (100mV/A versus 133mV/A) due to its higher current range. This results in proportionally reduced output voltage per ampere of measured current. Signal conditioning and analog-to-digital conversion circuits must accommodate this reduced sensitivity.

Frequency Response: The ACS712ELCTR-20A-T provides extended frequency bandwidth (DC ~ 80kHz versus DC ~ 50kHz), offering improved performance for higher-frequency current measurement applications.

Product Status: The ACS712ELCTR-20A-T is classified as "Not For New Designs," indicating limited long-term availability. Both components are subject to supply constraints.

Moisture Sensitivity: The ACS712ELCTR-20A-T requires controlled storage conditions (MSL 2, 1 Year) compared to the unlimited storage capability of the ACS706ELC-05C (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the ACS712ELCTR-20A-T directly replace the ACS706ELC-05C without circuit modifications?

A: Direct pin-compatible replacement is possible due to identical package and pinout. However, the reduced sensitivity (100mV/A versus 133mV/A) requires recalibration of signal conditioning circuits and analog-to-digital conversion scaling factors. Applications measuring currents below 5A will experience reduced measurement resolution with the ACS712ELCTR-20A-T.

Q: What is the impact of the different sensitivity specifications?

A: Sensitivity determines the output voltage per unit of measured current. The ACS706ELC-05C produces 133mV per ampere, while the ACS712ELCTR-20A-T produces 100mV per ampere. For a 5A measurement, the ACS706ELC-05C outputs 665mV, while the ACS712ELCTR-20A-T outputs 500mV. Signal processing firmware and analog-to-digital converter settings must be adjusted accordingly.

Q: Are there package compatibility concerns?

A: Both components use identical 8-SOIC (0.154", 3.90mm Width) surface-mount packages. PCB footprints, solder reflow profiles, and assembly processes remain unchanged.

Q: How does the extended frequency range of the ACS712ELCTR-20A-T affect system performance?

A: The ACS712ELCTR-20A-T supports measurement frequencies up to 80kHz compared to 50kHz for the ACS706ELC-05C. This provides improved capability for applications requiring higher-frequency current monitoring. Systems operating below 50kHz experience no performance difference.

Q: What are the storage and handling differences?

A: The ACS706ELC-05C (MSL 1) has unlimited shelf life under standard conditions. The ACS712ELCTR-20A-T (MSL 2) requires controlled storage with a 1-year maximum shelf life from the date of manufacture. Proper moisture control and storage conditions are necessary to maintain component reliability.

Q: Are both components RoHS compliant?

A: Both the ACS706ELC-05C and ACS712ELCTR-20A-T are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.