PHA2UOA Equivalent & Substitute Parts

Part Overview

The PHA2UOA is a pushbutton switch manufactured by C&K, featuring DPDT (Double Pole Double Throw) configuration with a standard through-hole, right-angle mounting design. This component is rated for 100mA DC at 30V and is sealed for environmental protection. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

PHA2UOA

C&KIn Stock: 1094PHA2UOA Datasheet

Current PartRFQ

PHB2UOATS1A

C&KIn Stock: 1858PHB2UOATS1A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PHA2UOA is determined by the following critical parameters:

• Circuit Configuration: DPDT topology must be maintained for functional equivalence
• Mounting Type: Through-hole, right-angle orientation required for PCB compatibility
• Switch Function: On-Mom (momentary) operation must be preserved
• Termination Style: PC pin termination ensures direct PCB connection compatibility
• Operating Temperature Range: -10°C to 60°C operational envelope must be supported
• Electrical Life: Minimum 10,000 cycles required for reliability equivalence

The PHB2UOATS1A qualifies as a direct substitute based on matching all critical parameters. While the substitute exhibits different current and voltage ratings, these represent enhanced specifications that maintain backward compatibility with the original design envelope.

Parameter Comparison

Engineering Selection Recommendations

The PHB2UOATS1A is the qualified substitute for the obsolete PHA2UOA. Selection is supported by the following factors:

• Active Product Status: PHB2UOATS1A maintains active manufacturing status, ensuring continued availability and supply chain reliability
• Regulatory Compliance: Both components meet RoHS requirements; PHB2UOATS1A achieves ROHS3 compliance, representing current regulatory alignment
• Functional Equivalence: Identical circuit topology, mounting configuration, and switch operation preserve design compatibility
• Enhanced Specifications: The substitute's higher current rating (1A vs. 100mA) and sealed terminal design provide improved performance margins within the original 30V design envelope
• Mechanical Compatibility: Matching actuator type, termination style, and through-hole right-angle mounting ensure direct PCB substitution without layout modification

Frequently Asked Questions (FAQ)

Q: Can PHB2UOATS1A directly replace PHA2UOA without PCB modifications?

A: Yes. Both components feature identical through-hole, right-angle mounting configurations and PC pin termination. Direct substitution on existing PCBs is possible without layout changes.

Q: What is the significance of the different voltage ratings (30V vs. 15V)?

A: The PHA2UOA is rated for 30V DC operation, while PHB2UOATS1A is rated for 15V DC. In applications operating at or below 15V, the substitute provides full compatibility. Applications requiring operation above 15V require design review to confirm the substitute meets voltage requirements.

Q: Does the higher current rating of PHB2UOATS1A (1A vs. 100mA) affect compatibility?

A: No. Higher current rating represents enhanced capability. The substitute can safely handle all applications within the original 100mA specification. Applications requiring currents between 100mA and 1A benefit from the increased rating.

Q: Are the sealing features equivalent between the two parts?

A: Both components provide sealed construction. PHA2UOA features sealed design; PHB2UOATS1A specifies epoxy sealed terminals, providing equivalent environmental protection with enhanced terminal durability.

Q: What is the packaging difference between these parts?

A: PHA2UOA is supplied in standard packaging; PHB2UOATS1A is supplied in bulk packaging. Packaging format does not affect electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. PHA2UOA meets RoHS compliance; PHB2UOATS1A meets ROHS3 compliance, representing alignment with current regulatory standards.