CQ2332 Equivalent & Substitute Parts

Part Overview

The CQ2332 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 21A measurement range and ratiometric voltage output. The CQ2332 is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	CQ2332 Specification
Sensor Type	Hall Effect, Open Loop
Current Sensing Range	21A
Number of Channels	1
Output Type	Ratiometric, Voltage
Sensitivity	100mV/A
Frequency Response	300kHz
Linearity	±1%
Accuracy	±1%
Supply Voltage	4.5V ~ 5.5V
Response Time	1µs
Supply Current (Max)	11mA
Operating Temperature	-40°C ~ 110°C
Polarization	Bidirectional
Mounting Type	Through Hole
Package Type	Module
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

The CZ3702 qualifies as a functional substitute for the CQ2332 based on the following critical parameters:

Matching Core Specifications:

Sensor Technology: Hall Effect, Open Loop
Current Sensing Capability: 21A
Channel Configuration: 1 Channel
Output Format: Ratiometric, Voltage
Sensitivity: 100mV/A
Measurement Type: AC/DC Bidirectional
Supply Voltage Range: 4.5V ~ 5.5V
Response Time: 1µs
Polarization: Bidirectional
RoHS Compliance: ROHS3 Compliant

Key Difference: The primary distinction between these parts is the mounting technology. The CQ2332 uses through-hole mounting in a module package, while the CZ3702 employs surface-mount technology in a 16-PowerSOIC package. This substitution requires PCB redesign to accommodate the different mounting footprint.

Parameter Comparison

Parameter	CQ2332	CZ3702	Compatibility Notes
Manufacturer	Asahi Kasei Microdevices (AKM)	Asahi Kasei Microdevices (AKM)	Same manufacturer ensures consistent design philosophy
Sensor Type	Hall Effect, Open Loop	Hall Effect, Open Loop	Identical sensing technology
Current Sensing	21A	21A	Identical measurement range
Channels	1	1	Single channel configuration
Output	Ratiometric, Voltage	Ratiometric, Voltage	Identical output characteristics
Sensitivity	100mV/A	100mV/A	Identical sensitivity
Frequency Response	300kHz	Not specified	CQ2332 specifies higher frequency capability
Linearity	±1%	±0.13%	CZ3702 offers superior linearity performance
Accuracy	±1%	±1%	Identical accuracy specification
Supply Voltage	4.5V ~ 5.5V	4.5V ~ 5.5V	Identical supply voltage range
Response Time	1µs	1µs	Identical response time
Supply Current (Max)	11mA	25mA	CZ3702 requires higher supply current
Operating Temperature	-40°C ~ 110°C	-40°C ~ 105°C	CQ2332 supports 5°C higher maximum temperature
Polarization	Bidirectional	Bidirectional	Identical bidirectional capability
Mounting Type	Through Hole	Surface Mount	Different mounting technology; PCB redesign required
Package	Module	16-PowerSOIC (0.303", 7.70mm Width), 10 Leads	Different physical packages
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Both meet RoHS3 requirements
Product Status	Obsolete	Active	CZ3702 is actively manufactured

Engineering Selection Recommendations

The CZ3702 is the manufacturer-recommended substitute for the obsolete CQ2332. Both components are ROHS3 compliant and manufactured by Asahi Kasei Microdevices, ensuring regulatory alignment and design consistency.

Selection Criteria:

The CZ3702 is appropriate for applications where surface-mount technology can be accommodated. The substitute offers improved linearity (±0.13% versus ±1%), which may benefit precision measurement applications. However, the CZ3702 exhibits higher supply current consumption (25mA versus 11mA) and a slightly reduced maximum operating temperature (105°C versus 110°C).

For designs currently using the through-hole CQ2332 module, transitioning to the CZ3702 requires PCB layout modification to accommodate the 16-PowerSOIC surface-mount package. The electrical interface remains compatible due to matching supply voltage, output format, sensitivity, and response characteristics.

Frequently Asked Questions (FAQ)

Q: Can the CZ3702 directly replace the CQ2332 without PCB modification?

A: No. The CQ2332 uses through-hole mounting while the CZ3702 uses surface-mount technology (16-PowerSOIC package). PCB redesign is required to accommodate the different footprint and lead configuration.

Q: Are the electrical outputs compatible between these parts?

A: Yes. Both components provide identical ratiometric voltage output with 100mV/A sensitivity, 1µs response time, and operate within the same 4.5V to 5.5V supply voltage range. Signal conditioning circuits designed for the CQ2332 will function with the CZ3702 without modification.

Q: What is the impact of the CZ3702's higher supply current?

A: The CZ3702 requires 25mA maximum supply current compared to the CQ2332's 11mA. Power supply design must accommodate this increased current draw. For battery-powered or low-power applications, this difference may be significant.

Q: Does the improved linearity of the CZ3702 affect compatibility?

A: No. The CZ3702's superior linearity (±0.13% versus ±1%) is a performance enhancement. Applications designed for ±1% linearity will operate correctly with the CZ3702, potentially with improved measurement accuracy.

Q: Are there temperature range considerations for substitution?

A: The CQ2332 operates to 110°C maximum while the CZ3702 operates to 105°C maximum. For applications requiring operation above 105°C, the CQ2332 specification cannot be fully replicated. Verify application temperature requirements before substitution.

Q: What is the lead count difference between these packages?

A: The CQ2332 module package lead count is not specified. The CZ3702 16-PowerSOIC package contains 10 leads. Verify the CQ2332 module pinout against the CZ3702 10-lead configuration to ensure correct signal routing.

Q: Are both parts RoHS compliant?

A: Yes. Both the CQ2332 and CZ3702 are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message