CQ2335 Equivalent & Substitute Parts

Part Overview

The CQ2335 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 85A current range and ratiometric voltage output. The CQ2335 is classified as obsolete, making identification of compatible substitute components essential for ongoing design support and production continuity. The part is available in through-hole module packaging with ROHS3 compliance.

Substiute Parts

CQ2335

Asahi Kasei Microdevices/AKMIn Stock: 1075CQ2335 Datasheet

Current PartRFQ

CZ3705

Asahi Kasei Microdevices/AKMIn Stock: 3173CZ3705 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CZ3705 qualifies as a functional substitute for the CQ2335 based on the following critical parameters:

Matching Parameters:

• Manufacturer: Both parts are Asahi Kasei Microdevices (AKM) products
• Sensor Technology: Hall Effect, open-loop bidirectional sensing
• Current Sensing Capability: CZ3705 rated at 86.4A (within acceptable range of CQ2335's 85A)
• Number of Channels: Single channel configuration
• Output Configuration: Ratiometric voltage output
• Sensitivity: Identical 25mV/A specification
• Supply Voltage: Identical 4.5V ~ 5.5V range
• Response Time: Identical 1µs specification
• Accuracy: Identical ±1% specification
• Polarization: Bidirectional for both parts
• Compliance: Both ROHS3 compliant

Differing Parameters:

• Mounting Type: CQ2335 is through-hole; CZ3705 is surface mount (16-PowerSOIC)
• Operating Temperature: CQ2335 extends to 110°C; CZ3705 to 105°C
• Linearity: CZ3705 offers improved ±0.13% vs. CQ2335's ±1%
• Current Supply: CZ3705 requires 23.4mA vs. CQ2335's 11mA
• Product Status: CZ3705 is active; CQ2335 is obsolete

Parameter Comparison

Engineering Selection Recommendations

The CZ3705 is the designated manufacturer substitute for the obsolete CQ2335. Both components maintain identical electrical specifications for current sensing, output characteristics, and supply requirements. The CZ3705 is actively manufactured and stocked, providing production continuity for applications previously using the CQ2335.

Selection of the CZ3705 requires evaluation of the following design factors:

Package Form Factor: The transition from through-hole to surface-mount (16-PowerSOIC) packaging necessitates PCB layout redesign. This is the primary consideration for component substitution.

Operating Temperature Range: Applications requiring operation above 105°C cannot use the CZ3705 as a direct substitute. The CQ2335's extended range to 110°C is not matched by the CZ3705.

Supply Current: The CZ3705 draws 23.4mA maximum compared to the CQ2335's 11mA. Power supply and thermal design must accommodate this increased current draw.

Improved Linearity: The CZ3705 provides ±0.13% linearity versus the CQ2335's ±1%, offering enhanced measurement accuracy for precision applications.

Both parts maintain ROHS3 compliance and identical sensitivity, accuracy, and response time specifications, ensuring functional equivalence in current measurement applications.

Frequently Asked Questions (FAQ)

Q: Can the CZ3705 directly replace the CQ2335 without PCB modifications?

A: No. The CQ2335 uses through-hole mounting while the CZ3705 uses surface-mount 16-PowerSOIC packaging. PCB layout redesign is required for component substitution.

Q: Are the electrical specifications identical between these parts?

A: The critical electrical specifications are equivalent: both provide 25mV/A sensitivity, ±1% accuracy, 1µs response time, and identical supply voltage range (4.5V ~ 5.5V). The CZ3705 offers improved linearity (±0.13% vs. ±1%).

Q: What is the maximum current these sensors can measure?

A: The CQ2335 is rated for 85A while the CZ3705 is rated for 86.4A. Both are suitable for equivalent current measurement applications.

Q: Does the CZ3705 require different power supply specifications?

A: The supply voltage range is identical (4.5V ~ 5.5V). However, the CZ3705 draws 23.4mA maximum current compared to the CQ2335's 11mA, requiring higher supply capacity.

Q: Are both parts RoHS compliant?

A: Yes, both the CQ2335 and CZ3705 are ROHS3 compliant.

Q: What is the temperature operating range for each part?

A: The CQ2335 operates from -40°C to 110°C. The CZ3705 operates from -40°C to 105°C. Applications requiring operation above 105°C cannot use the CZ3705.

Q: Why is the CQ2335 listed as obsolete?

A: The CQ2335 has been discontinued by the manufacturer. The CZ3705 is the active production substitute from Asahi Kasei Microdevices.