CY-21 Equivalent & Substitute Parts

Part Overview

The CY-21 is a through-beam optical sensor manufactured by Panasonic Industrial Automation Sales, designed for long-distance infrared detection applications. This sensor features a 12-meter sensing distance with NPN open-collector output, operating across a 10V to 30V supply range. The product is currently obsolete, making identification of compatible substitute components essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

CY-21

Panasonic Industrial Automation SalesIn Stock: 841CY-21 Datasheet

Current PartRFQ

CY-111A

Panasonic Industrial Automation SalesIn Stock: 1189CY-111A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CY-111A qualifies as a functional substitute for the CY-21 based on the following critical parameters:

Matching Parameters:

• Sensing Method: Both employ through-beam detection
• Output Configuration: Both feature NPN open-collector output
• Light Source: Both use infrared
• Ingress Protection: Both rated IP67
• Operating Temperature: Both operate -25°C ~ 55°C
• Connection Method: Both use cable connection
• Cable Length: Both provide 78.74" (2m) cable

Differing Parameters:

• Sensing Distance: CY-111A extends to 590.551" (15m) versus CY-21's 472.4" (12m)
• Voltage - Supply: CY-111A operates 12V ~ 24V versus CY-21's 10V ~ 30V
• Response Time: CY-111A provides 1ms versus CY-21's 2ms
• Product Status: CY-111A is Active; CY-21 is Obsolete

Parameter Comparison

Engineering Selection Recommendations

The CY-111A serves as the designated substitute for the obsolete CY-21. Selection of the CY-111A is supported by:

Product Status: The CY-111A maintains Active status with current manufacturing support, ensuring availability and supply chain continuity. The CY-21's Obsolete classification necessitates substitution for ongoing system support.

Compliance: Both components meet RoHS requirements. The CY-111A achieves ROHS3 Compliant status, representing current regulatory alignment.

Functional Compatibility: Core detection architecture remains unchanged—both sensors employ through-beam infrared detection with NPN open-collector output, maintaining signal interface compatibility with existing control circuits.

Parameter Considerations: The CY-111A's extended 15-meter sensing distance and faster 1-millisecond response time provide performance enhancement over the original specification. The supply voltage range (12V ~ 24V) is narrower than the CY-21 (10V ~ 30V); system supply voltage must fall within 12V ~ 24V for CY-111A operation.

Frequently Asked Questions (FAQ)

Q: Can the CY-111A directly replace the CY-21 in existing installations?

A: Direct replacement is possible when system supply voltage operates within the CY-111A's 12V ~ 24V range. If the original system supplies 10V or below, or exceeds 24V, alternative solutions must be evaluated. The identical cable length (2m), connection method, and output configuration support mechanical and electrical integration without modification.

Q: What are the key differences between these sensors?

A: The CY-111A provides three performance improvements: extended sensing distance (15m versus 12m), faster response time (1ms versus 2ms), and current product status with active manufacturing support. The supply voltage operating range differs; verify compatibility with your system's power supply specifications.

Q: Does the CY-111A's longer sensing distance affect application suitability?

A: Extended sensing distance does not degrade performance in applications requiring 12-meter detection. The increased range provides operational margin and flexibility for future application modifications. No recalibration is required for equivalent distance applications.

Q: Are there packaging differences between CY-21 and CY-111A?

A: The CY-111A is supplied in Box packaging. Both sensors maintain identical physical connection interfaces (cable, 2m length) and environmental ratings (IP67), ensuring compatibility with existing mounting and installation infrastructure.

Q: What compliance certifications apply to the CY-111A?

A: The CY-111A holds ROHS3 Compliant and RoHS Compliant certifications, meeting current and legacy regulatory requirements. Both sensors are classified under ECCN EAR99 and HTSUS 8541.49.8000 for trade and export purposes.