Grayhill 61K32 Rotary Encoder Optical 32PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 61K32 is an optical rotary encoder with 32 pulses per revolution (PPR), providing quadrature (incremental) output for rotational position sensing applications. This encoder features a 1/4" diameter flatted end actuator, vertical orientation, and panel/PCB through-hole mounting. The 61K32 is an active product with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

61K32

Grayhill Inc.In Stock: 80461K32 Datasheet

Current PartRFQ

EM14A0D-C24-L032N

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Grayhill 61K32 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Encoder type: Optical
• Output type: Quadrature (Incremental)
• Pulses per revolution: 32 PPR
• Supply voltage: 5V

Mechanical Equivalence Requirements:

• Actuator type: 1/4" Dia Flatted End
• Mounting type: Panel, PCB Through Hole
• Orientation: Vertical
• Termination style: PC Pin

Functional Equivalence Requirements:

• Detent: No
• Built-in switch: No

The Bourns EM14A0D-C24-L032N meets all electrical, mechanical, and functional equivalence criteria, qualifying it as a direct substitute for the Grayhill 61K32 in applications requiring identical performance characteristics and form factors.

Parameter Comparison

Engineering Selection Recommendations

Both the Grayhill 61K32 and Bourns EM14A0D-C24-L032N are active products with RoHS3 compliance and identical electrical/mechanical specifications. Selection between these parts is based on:

Availability and Lead Time: The Bourns EM14A0D-C24-L032N currently maintains higher inventory (1081 pcs) compared to the Grayhill 61K32 (700 pcs), supporting shorter procurement cycles when supply constraints exist.

Regulatory Compliance: Both parts carry EAR99 export classification and share identical HTSUS coding (8543.70.4500). The Grayhill 61K32 maintains REACH Unaffected status, while the Bourns part is REACH Affected. Regulatory requirements specific to end-use applications determine compliance obligations.

Rotational Life Rating: The Grayhill 61K32 specifies 10M cycle minimum rotational life, while the Bourns EM14A0D-C24-L032N specifies 1M cycle minimum. Applications requiring extended operational life cycles should prioritize the Grayhill part.

Moisture Sensitivity: The Grayhill 61K32 carries MSL 1 (Unlimited), while the Bourns part lists MSL as Not Applicable. Storage and handling requirements differ accordingly.

Frequently Asked Questions (FAQ)

Q: Can the Bourns EM14A0D-C24-L032N directly replace the Grayhill 61K32 in existing designs?

A: Yes, the Bourns EM14A0D-C24-L032N is electrically and mechanically equivalent. Both parts provide identical 32 PPR quadrature output at 5V supply with matching 1/4" flatted end actuators, vertical orientation, and PC pin termination. Direct PCB substitution is supported without design modification.

Q: What are the key differences between these two parts?

A: The primary differences are rotational life rating (Grayhill 10M cycles vs. Bourns 1M cycles), moisture sensitivity classification (Grayhill MSL 1 vs. Bourns Not Applicable), and REACH regulatory status (Grayhill Unaffected vs. Bourns Affected). Electrical and mechanical specifications are identical.

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

A: The Grayhill 61K32 is specified for 10M cycle minimum rotational life, making it the appropriate choice for applications requiring extended operational durability. The Bourns EM14A0D-C24-L032N is rated for 1M cycle minimum.

Q: Are there packaging or termination differences?

A: Both parts use identical PC pin termination and support panel/PCB through-hole mounting in vertical orientation. Packaging is specified as Bulk for both manufacturers.

Q: What compliance certifications apply to both parts?

A: Both the Grayhill 61K32 and Bourns EM14A0D-C24-L032N are RoHS3 compliant and carry EAR99 export classification. REACH status differs: Grayhill is REACH Unaffected; Bourns is REACH Affected. End-use application requirements determine applicable regulatory obligations.