CQ3301 Equivalent & Substitute Parts

Part Overview

The CQ3301 is a Hall Effect current sensor manufactured by Asahi Kasei Microdevices (AKM) designed for AC/DC current measurement applications. This component features open-loop bidirectional sensing with a 10.7A measurement range and ratiometric voltage output. The CQ3301 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CQ3301

Asahi Kasei Microdevices/AKMIn Stock: 1157CQ3301 Datasheet

Current PartRFQ

CZ3701

Asahi Kasei Microdevices/AKMIn Stock: 2262CZ3701 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CQ3301 is determined by the following critical parameters:

• Sensor Technology: Hall Effect, open-loop architecture
• Current Measurement Capability: 10.7A nominal range
• Output Configuration: Ratiometric voltage output
• Electrical Interface: Single-channel, bidirectional measurement
• Supply Voltage Compatibility: 4.5V to 5.5V operation
• Thermal Operating Range: Minimum -40°C to 90°C
• Compliance: ROHS3 certification

The CZ3701 meets these core substitution criteria while maintaining functional equivalence for current sensing applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

The CZ3701 serves as the active equivalent for the obsolete CQ3301 within the AKM current sensor product line. Selection of the CZ3701 is supported by:

• Product Status Alignment: CZ3701 is actively manufactured, ensuring long-term availability and supply chain continuity
• Functional Equivalence: Identical sensor technology, current measurement range, output type, and supply voltage specifications
• Compliance Certification: Both components maintain ROHS3 compliance
• Enhanced Operating Range: CZ3701 extends the upper operating temperature limit to 105°C, providing additional thermal margin for demanding applications

Critical Design Consideration: The CZ3701 requires PCB layout modification due to package footprint differences. The CQ3301 uses a 24-LSSOP package, while the CZ3701 uses a 16-PowerSOIC package. Pin configuration and lead spacing differ; therefore, direct socket substitution is not possible without redesign.

Frequently Asked Questions (FAQ)

Q: Can the CZ3701 directly replace the CQ3301 without PCB modification?

A: No. The CQ3301 uses a 24-LSSOP (0.220", 5.60mm Width) package, while the CZ3701 uses a 16-PowerSOIC (0.303", 7.70mm Width) package. PCB layout and footprint redesign is required for substitution.

Q: Are the electrical specifications compatible between CQ3301 and CZ3701?

A: Yes. Both components operate on 4.5V to 5.5V supply voltage, provide ratiometric voltage output, measure 10.7A current range, and support bidirectional sensing. Sensitivity differs by 4mV/A (196mV/A vs. 200mV/A), which is acceptable for ratiometric output applications.

Q: What is the temperature operating range difference?

A: The CQ3301 operates from -40°C to 90°C, while the CZ3701 extends to -40°C to 105°C. The CZ3701 provides 15°C additional upper temperature margin.

Q: Why is the CQ3301 listed as obsolete?

A: The CQ3301 has been discontinued by AKM. The CZ3701 is the active product line replacement within the AKM current sensor portfolio.

Q: Are both components RoHS compliant?

A: Yes. Both the CQ3301 and CZ3701 are ROHS3 compliant.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching sensor type (Hall Effect, open-loop), current measurement range (10.7A), output configuration (ratiometric voltage), channel count (1), supply voltage (4.5V to 5.5V), polarization (bidirectional), and compliance certifications (ROHS3).