AQV221AX Equivalent & Substitute Parts

Part Overview

The AQV221AX is a Solid State SPST-NO (1 Form A) relay manufactured by Panasonic Electric Works, part of the PhotoMOS™ AQV series. This component is rated for 80 mA load current with a maximum load voltage of 40 V and on-state resistance of 35 Ohms maximum. The device features a 6-SMD gull wing package (0.300", 7.62mm) for surface mount applications.

The AQV221AX is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this relay.

Substiute Parts

AQV221AX

Panasonic Electric WorksIn Stock: 2268AQV221AX Datasheet

Current PartRFQ

CS135

Coto TechnologyIn Stock: 2149CS135 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AQV221AX is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Package / Case: Must be 6-SMD (0.300", 7.62mm) with gull wing termination for PCB compatibility
• Mounting Type: Must be surface mount to fit existing board layouts
• Load Voltage Range: Substitute must support the required 0 V ~ 40 V operating range or higher
• Load Current: Substitute must support at least 80 mA, or higher capacity
• On-State Resistance: Lower or equal resistance values are acceptable for improved performance
• Input Voltage: Substitute must be compatible with 1.14 VDC control signal or lower threshold

The CS135 from Coto Technology meets these substitution criteria. It maintains identical circuit configuration and package specifications while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The CS135 is a direct functional substitute for the AQV221AX based on matching circuit configuration, package geometry, and mounting specifications. The CS135 offers the following advantages:

• Active Product Status: The CS135 is currently in active production, ensuring long-term availability and supply chain continuity
• Enhanced Electrical Performance: Higher load voltage rating (80 V vs. 40 V), increased load current capacity (100 mA vs. 80 mA), and lower on-state resistance (30 Ohms vs. 35 Ohms)
• Compliance Certifications: ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements
• Moisture Sensitivity: Defined MSL rating (2, 1 Year) supports controlled storage and handling procedures

The CS135 is suitable for direct replacement in applications where the AQV221AX is specified, provided that the higher input voltage threshold (1.37 VDC vs. 1.14 VDC) is compatible with the control circuit design.

Frequently Asked Questions (FAQ)

Q: Can the CS135 be used as a direct drop-in replacement for the AQV221AX?

A: Yes, the CS135 is a direct functional substitute. Both components share identical circuit configuration (SPST-NO), package type (6-SMD, 0.300", 7.62mm), termination style (gull wing), and mounting method (surface mount). PCB layout and footprint compatibility are maintained.

Q: What are the key differences between the AQV221AX and CS135?

A: The CS135 provides enhanced electrical specifications: load voltage range extends to 80 V (vs. 40 V), load current capacity increases to 100 mA (vs. 80 mA), and on-state resistance decreases to 30 Ohms (vs. 35 Ohms). The input voltage threshold is slightly higher at 1.37 VDC compared to 1.14 VDC. The CS135 is an active product with ROHS3 compliance.

Q: Is the higher input voltage threshold of the CS135 (1.37 VDC) a compatibility concern?

A: The input voltage difference must be evaluated against the control circuit design. If the control circuit provides voltage significantly above 1.37 VDC, the CS135 will operate reliably. If the control circuit operates near the 1.14 VDC threshold of the original AQV221AX, verification of control signal levels is necessary before substitution.

Q: Are there any package or footprint differences between these components?

A: No. Both the AQV221AX and CS135 use identical 6-SMD packages with 0.300" (7.62mm) body dimensions and gull wing termination. PCB footprints are compatible without modification.

Q: What is the significance of the CS135 being an active product versus the AQV221AX being obsolete?

A: Active product status ensures ongoing manufacturing, documented supply availability, and technical support from the manufacturer. The obsolete status of the AQV221AX indicates discontinued production, making the CS135 the preferred choice for new designs and ongoing production requirements.

Q: Does the CS135 meet current regulatory requirements?

A: Yes. The CS135 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components in most markets.