Grayhill 61RS32 Rotary Encoder Optical 32PPR - Equivalent & Substitute Parts

Part Overview

The Grayhill 61RS32 is an optical rotary encoder with 32 pulses per revolution (PPR), providing quadrature (incremental) output. This vertical-mounted encoder operates at 5V supply voltage and features a 1/4" diameter flatted end actuator. The device is designed for panel and PCB through-hole mounting applications with PC pin termination. The 61RS32 maintains active product status with 1,048 units in current inventory and meets ROHS3 compliance and REACH unaffected requirements. Substitute parts are identified to address inventory availability, lead time considerations, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

61RS32

Grayhill Inc.In Stock: 111761RS32 Datasheet

Current PartRFQ

EM14A0D-C24-L032N

Bourns Inc.In Stock: 1184EM14A0D-C24-L032N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Grayhill 61RS32 are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria include:

Critical Matching Parameters:

• Encoder Type: Optical
• Output Type: Quadrature (Incremental)
• Pulses per Revolution: 32 PPR
• Supply Voltage: 5V
• Actuator Type: 1/4" Dia Flatted End
• Mounting Type: Panel, PCB Through Hole
• Orientation: Vertical
• Termination Style: PC Pin

The Bourns EM14A0D-C24-L032N meets all critical electrical and mechanical parameters required for direct substitution. Both parts operate identically in quadrature output mode with 32 PPR resolution at 5V supply, feature identical actuator geometry and mounting configuration, and utilize PC pin termination for vertical panel/PCB mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the Grayhill 61RS32 and Bourns EM14A0D-C24-L032N are active products with current inventory availability. Selection between these parts should be based on:

Compliance Considerations: Both parts are ROHS3 compliant and classified under identical ECCN (EAR99) and HTSUS codes (8543.70.4500), ensuring equivalent regulatory standing for export and procurement purposes.

Operational Equivalence: The parts are electrically and mechanically interchangeable for applications requiring 32 PPR optical quadrature encoding at 5V with vertical panel or PCB through-hole mounting. Signal output characteristics, actuator interface, and termination are identical.

Rotational Life Specification: The Grayhill 61RS32 specifies 10 million cycle minimum rotational life, while the Bourns EM14A0D-C24-L032N specifies 1 million cycle minimum. Applications requiring extended operational life should prioritize the Grayhill part.

Moisture Sensitivity: The Grayhill 61RS32 carries MSL 1 (unlimited moisture sensitivity level), while the Bourns part lists MSL as not applicable. For applications with moisture exposure concerns, the Grayhill specification provides explicit handling guidance.

Frequently Asked Questions (FAQ)

Q: Can the Bourns EM14A0D-C24-L032N directly replace the Grayhill 61RS32 in existing designs?

A: Yes, for applications within the 1 million cycle rotational life specification. Both parts provide identical 32 PPR quadrature output at 5V with matching actuator geometry, mounting configuration, and PC pin termination. PCB layout and connector compatibility are equivalent.

Q: What is the primary difference between these two optical encoders?

A: The Grayhill 61RS32 specifies 10 million cycle minimum rotational life, while the Bourns EM14A0D-C24-L032N specifies 1 million cycles. The Grayhill part carries explicit MSL 1 classification; the Bourns part lists MSL as not applicable. Both are ROHS3 compliant and operationally identical for quadrature output.

Q: Are there any packaging or inventory considerations?

A: Both parts are supplied in bulk packaging with current inventory: Grayhill 61RS32 has 1,048 units in stock; Bourns EM14A0D-C24-L032N has 1,081 units in stock. Selection may be influenced by lead time or procurement channel availability.

Q: Do these encoders require different circuit designs or signal conditioning?

A: No. Both parts output identical quadrature signals at 5V with PC pin termination. Existing circuit designs, signal conditioning, and firmware implementations are directly compatible without modification.

Q: Which part should be selected for high-cycle-count applications?

A: The Grayhill 61RS32 is specified for 10 million cycle minimum rotational life, making it the appropriate choice for applications exceeding 1 million cycles. The Bourns part is suitable for applications within the 1 million cycle specification.