Grayhill 25LR30-Q-Z Rotary Encoder Mechanical 12PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 25LR30-Q-Z is an active mechanical rotary encoder with 12 pulses per revolution (PPR) in quadrature (incremental) output configuration. This vertical-orientation encoder features a 1/4" diameter flatted end actuator with detent positioning and is designed for panel and PCB through-hole mounting applications. The part is RoHS Compliant and REACH Unaffected, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent mechanical specifications, output characteristics, and compliance certifications align with application requirements.

Substiute Parts

25LR30-Q-Z

Grayhill Inc.In Stock: 83025LR30-Q-Z Datasheet

Current PartRFQ

25LB30-Q

Grayhill Inc.In Stock: 113825LB30-Q Datasheet

SimilarRFQ

25LB45-Q

Grayhill Inc.In Stock: 111925LB45-Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 25LR30-Q-Z are identified based on strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Encoder Type: Mechanical
• Output Type: Quadrature (Incremental)
• Actuator Type: 1/4" Dia Flatted End
• Detent: Yes
• Mounting Type: Panel, PCB Through Hole
• Orientation: Vertical
• Termination Style: PC Pin
• Rotational Life: 100K cycles minimum
• Series: 25L (Grayhill)

Secondary Consideration:

• Pulses per Revolution (PPR): Substitutes may vary in PPR specification if all primary criteria are met, as PPR determines resolution rather than mechanical compatibility.

The 25LR30-Q-Z has two identified substitutes within the Grayhill 25L series that maintain mechanical and electrical compatibility while differing in resolution specification.

Parameter Comparison

Engineering Selection Recommendations

25LB30-Q as Primary Substitute: The 25LB30-Q maintains identical specifications to the 25LR30-Q-Z across all mechanical, electrical, and functional parameters. The primary difference is packaging (Bulk versus standard) and RoHS certification level (ROHS3 Compliant versus RoHS Compliant). Both parts are Active status products with equivalent rotational life ratings and compliance certifications. Selection of 25LB30-Q is appropriate when packaging format and RoHS3 compliance are acceptable.

25LB45-Q as Secondary Substitute: The 25LB45-Q differs in pulses per revolution specification (8 PPR versus 12 PPR). All mechanical parameters, mounting characteristics, detent functionality, and compliance certifications remain equivalent. Selection of 25LB45-Q is appropriate only when application requirements permit lower resolution operation. The reduced PPR specification results in coarser angular resolution per pulse.

All three parts maintain Active product status, unlimited moisture sensitivity rating, and REACH Unaffected compliance. Selection between substitutes depends on resolution requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can 25LB30-Q directly replace 25LR30-Q-Z in existing designs? A: Yes. The 25LB30-Q is mechanically and electrically equivalent to the 25LR30-Q-Z. Both parts feature identical PPR (12), actuator type (1/4" Dia Flatted End), mounting configuration (Panel, PCB Through Hole), and rotational life rating (100K cycles). Packaging format differs (Bulk versus standard), and RoHS certification level differs (ROHS3 versus RoHS Compliant), but functional compatibility is complete.

Q: What is the key difference between 25LB45-Q and 25LR30-Q-Z? A: The 25LB45-Q operates at 8 pulses per revolution, while the 25LR30-Q-Z operates at 12 pulses per revolution. This results in lower angular resolution per pulse with the 25LB45-Q. All other mechanical and electrical specifications are identical. Selection of 25LB45-Q requires confirmation that the application can operate with reduced resolution.

Q: Are all three parts RoHS compliant? A: Yes. The 25LR30-Q-Z is RoHS Compliant. The 25LB30-Q and 25LB45-Q are ROHS3 Compliant. All three parts meet RoHS requirements and are REACH Unaffected.

Q: What does the detent feature provide? A: Detent functionality provides tactile positioning feedback and mechanical resistance at discrete angular positions. All three parts include detent capability.

Q: Are there supply considerations between these parts? A: Current inventory levels differ: 25LR30-Q-Z (749 Pcs), 25LB30-Q (1060 Pcs), and 25LB45-Q (1024 Pcs). Availability should be verified at time of procurement.

Q: Can these encoders be used in high-moisture environments? A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations for storage or handling.