Grayhill 62A18-02-P Rotary Encoder Optical 20PPR - Equivalent & Substitute Parts

Part Overview

The Grayhill 62A18-02-P is an optical rotary encoder with 20 pulses per revolution (PPR), providing quadrature incremental output. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. The encoder features a 1/4" diameter flatted end actuator, integrated detent mechanism, and built-in switch functionality, designed for PCB through-hole mounting with user-selectable orientation.

Substitute parts are identified when inventory constraints, lead time requirements, or application-specific needs necessitate alternative components within the same product family that maintain functional compatibility through equivalent electrical and mechanical parameters.

Substiute Parts

62A18-02-P

Grayhill Inc.In Stock: 77262A18-02-P Datasheet

Current PartRFQ

62A22-02-P

Grayhill Inc.In Stock: 108062A22-02-P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 62A18-02-P is determined by strict equivalence across the following critical parameters:

Mandatory Equivalent Parameters:

• Manufacturer: Grayhill Inc. (same product family)
• Encoder Type: Optical
• Output Type: Quadrature (Incremental)
• Supply Voltage: 5V
• Actuator Type: 1/4" Dia Flatted End
• Detent: Yes
• Built-in Switch: Yes
• Mounting Type: PCB, Through Hole
• Orientation: User Selectable
• Termination Style: PC Pin
• Rotational Life: 1M cycles minimum
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter Allowing Substitution:

• Pulses per Revolution (PPR): The 62A22-02-P operates at 16 PPR versus the primary part's 20 PPR. This difference represents a resolution variance within the same encoder family and does not violate mechanical or electrical compatibility constraints.

The 62A22-02-P qualifies as a substitute part because it maintains all mandatory equivalent parameters while differing only in PPR specification, which is an application-dependent selection criterion rather than a compatibility barrier.

Parameter Comparison

Engineering Selection Recommendations

Both the 62A18-02-P and 62A22-02-P maintain Active product status with identical compliance certifications (RoHS3 Compliant, REACH Unaffected). Selection between these components is determined by application-specific resolution requirements:

62A18-02-P Selection Criteria:

• Applications requiring 20 PPR resolution
• Systems designed for higher angular position granularity
• Current inventory availability: 753 pieces

62A22-02-P Selection Criteria:

• Applications requiring 16 PPR resolution
• Systems where lower resolution is functionally acceptable
• Current inventory availability: 1040 pieces

Both components are manufactured by Grayhill Inc. within the 62A series and share identical mechanical mounting, electrical interface, and environmental compliance specifications. The PPR difference represents a resolution trade-off that must be evaluated against specific application firmware and control algorithm requirements.

Frequently Asked Questions (FAQ)

Q: Can the 62A22-02-P directly replace the 62A18-02-P in existing designs?

A: Mechanical and electrical compatibility is confirmed. The 62A22-02-P features identical mounting type (PCB through-hole), actuator geometry (1/4" flatted end), supply voltage (5V), and termination style (PC pin). The 16 PPR output versus 20 PPR requires firmware evaluation to determine if the lower resolution meets application requirements.

Q: What is the primary difference between these substitute parts?

A: The sole technical difference is pulses per revolution: 62A18-02-P provides 20 PPR while 62A22-02-P provides 16 PPR. All other electrical, mechanical, and compliance parameters are identical.

Q: Are both parts available in the same packaging format?

A: Yes. Both the 62A18-02-P and 62A22-02-P are supplied in Bulk packaging with PC Pin termination style, suitable for identical PCB assembly processes.

Q: Do these encoders require different supply voltage levels?

A: No. Both components operate at 5V supply voltage with identical electrical interface requirements.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts maintain RoHS3 compliance, REACH unaffected status, MSL 1 (unlimited), and equivalent environmental certifications.

Q: How does PPR difference affect system performance?

A: PPR determines angular resolution per encoder revolution. The 62A18-02-P provides 20 discrete positions per revolution (18° per step), while the 62A22-02-P provides 16 discrete positions per revolution (22.5° per step). Application firmware must accommodate this resolution difference.