CQ2334 Equivalent & Substitute Parts

Part Overview

The CQ2334 is a Hall Effect current sensor manufactured by Asahi Kasei Microdevices (AKM) designed for AC/DC current measurement applications. This through-hole module sensor provides open-loop, bidirectional current sensing with a 54A measurement range and ratiometric voltage output. The CQ2334 is classified as obsolete, making identification of functionally equivalent active alternatives essential for new designs and ongoing production requirements.

Substiute Parts

CQ2334

Asahi Kasei Microdevices/AKMIn Stock: 1270CQ2334 Datasheet

Current PartRFQ

CZ3704

Asahi Kasei Microdevices/AKMIn Stock: 3046CZ3704 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CQ2334 can be substituted with the CZ3704 based on the following critical parameters that remain constant across both devices:

Matching Parameters:

• Manufacturer: Both manufactured by Asahi Kasei Microdevices (AKM)
• Sensor Technology: Hall Effect, Open Loop
• Current Sensing Capability: 54A
• Channel Configuration: Single channel
• Output Format: Ratiometric voltage output
• Sensitivity: 40mV/A
• Accuracy: ±1%
• Supply Voltage Range: 4.5V – 5.5V
• Response Time: 1µs
• Polarization: Bidirectional
• RoHS Compliance: ROHS3 Compliant

The primary difference between these parts is the packaging format: the CQ2334 uses through-hole module packaging, while the CZ3704 employs surface-mount 16-PowerSOIC technology. This substitution is valid when PCB layout and assembly processes can accommodate the surface-mount package change.

Parameter Comparison

Engineering Selection Recommendations

The CZ3704 is the designated manufacturer substitute for the obsolete CQ2334. Selection of the CZ3704 is appropriate when the following conditions are met:

Design Compatibility:

• PCB layout supports 16-PowerSOIC surface-mount package integration
• Assembly process includes surface-mount soldering capability
• Maximum operating temperature requirement does not exceed 105°C

Performance Considerations:

• The CZ3704 provides superior linearity (±0.13% versus ±1%), beneficial for precision measurement applications
• Supply current consumption increases from 11mA to 25mA; verify power budget compatibility
• All critical electrical parameters remain equivalent for AC/DC current measurement applications

Compliance & Availability:

• CZ3704 maintains ROHS3 compliance equivalent to the CQ2334
• CZ3704 is actively manufactured with established supply chain availability
• Both parts share identical manufacturer certification and ECCN/HTSUS classifications

Frequently Asked Questions (FAQ)

Q: Can the CZ3704 directly replace the CQ2334 in existing designs?

A: Electrical substitution is valid; however, PCB redesign is required due to package format change from through-hole module to 16-PowerSOIC surface-mount. The CZ3704 maintains identical current sensing range, sensitivity, output format, and supply voltage specifications.

Q: What are the key differences between these parts?

A: The primary differences are packaging technology (through-hole versus surface-mount), maximum operating temperature (110°C versus 105°C), supply current draw (11mA versus 25mA), and linearity specification (±1% versus ±0.13%). All core sensing parameters remain identical.

Q: Is the CZ3704 suitable for high-temperature applications above 105°C?

A: No. The CZ3704 maximum operating temperature is 105°C. If the application requires operation above 105°C, alternative solutions must be evaluated, as the CQ2334 (rated to 110°C) is obsolete.

Q: What is the impact of increased supply current in the CZ3704?

A: The CZ3704 draws 25mA maximum compared to 11mA for the CQ2334. Verify that the power supply and circuit design can accommodate this 14mA increase without affecting system performance or thermal management.

Q: Are both parts RoHS compliant?

A: Yes. Both the CQ2334 and CZ3704 are ROHS3 compliant and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the linearity improvement in the CZ3704?

A: The CZ3704 offers ±0.13% linearity compared to ±1% for the CQ2334. This represents approximately 7.7 times better linearity performance, beneficial for applications requiring high measurement accuracy.