Grayhill 25BSP10-Q-1-36C Rotary Encoder Mechanical - Equivalent & Substitute Parts

Part Overview

The Grayhill 25BSP10-Q-1-36C is an active mechanical rotary encoder with 36 pulses per revolution (PPR) in quadrature (incremental) output configuration. This right-angle PCB-mounted encoder features a 1/4" diameter flatted end actuator and PC pin termination for through-hole mounting applications. The component is ROHS3 compliant and REACH unaffected, with a rotational life rating of 50,000 cycles minimum. Finding equivalent or substitute parts becomes necessary when addressing inventory constraints, lead time requirements, or application-specific resolution needs that differ from the 36 PPR specification.

Substiute Parts

25BSP10-Q-1-36C

Grayhill Inc.In Stock: 113225BSP10-Q-1-36C Datasheet

Current PartRFQ

25BP45-Q-2-08C

Grayhill Inc.In Stock: 87825BP45-Q-2-08C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 25BSP10-Q-1-36C is determined by strict alignment of the following critical parameters:

Fixed Substitution Criteria (Must Match Exactly):

• Manufacturer: Grayhill Inc.
• Series: 25
• Encoder Type: Mechanical
• Output Type: Quadrature (Incremental)
• Actuator Type: 1/4" Dia Flatted End
• Mounting Type: PCB, Through Hole
• Orientation: Right Angle
• Termination Style: PC Pin
• Detent: No
• Built-in Switch: No
• Rotational Life (Cycles Min): 50K
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter (Application-Dependent):

• Pulses per Revolution (PPR): 36 (primary specification; substitutes may differ based on resolution requirements)

The substitute part 25BP45-Q-2-08C meets all fixed criteria but operates at 8 PPR instead of 36 PPR. This represents a lower-resolution alternative suitable for applications where coarser angular resolution is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For 25BSP10-Q-1-36C (Primary Selection): The 25BSP10-Q-1-36C is the specified component for applications requiring 36 PPR resolution. This part is active, ROHS3 compliant, and REACH unaffected. Current inventory of 1,110 pieces supports immediate procurement. The component meets all regulatory and environmental compliance requirements for industrial and commercial applications.

For 25BP45-Q-2-08C (Substitute Selection): The 25BP45-Q-2-08C is a valid substitute when application requirements permit operation at 8 PPR resolution. This part maintains identical mechanical, electrical, and compliance characteristics to the primary part, with the exception of angular resolution. The substitute is active with 768 pieces in inventory. Selection of this substitute is appropriate only when the application's control algorithm and user interface can function with 8 PPR instead of 36 PPR. Both parts carry identical ROHS3 compliance, REACH unaffected status, and rotational life ratings.

Compliance Considerations: Both parts are ROHS3 compliant and REACH unaffected, making them suitable for regulated markets. Both carry EAR99 export classification and identical HTSUS coding. Moisture sensitivity level 1 (unlimited) indicates no special storage or handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the 25BP45-Q-2-08C directly replace the 25BSP10-Q-1-36C in my application?

A: Direct mechanical and electrical replacement is possible due to identical mounting, orientation, termination, and actuator specifications. However, the 8 PPR output of the substitute differs from the 36 PPR of the primary part. Substitution is valid only if your application firmware and control logic can operate with the lower resolution. No hardware modifications are required for physical installation.

Q: What is the key difference between these two parts?

A: The primary difference is pulses per revolution: 25BSP10-Q-1-36C provides 36 PPR while 25BP45-Q-2-08C provides 8 PPR. All other parameters—mechanical form factor, mounting type, orientation, termination style, compliance ratings, and rotational life—are identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the 25BSP10-Q-1-36C and 25BP45-Q-2-08C are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for industrial applications.

Q: What is the rotational life specification for both encoders?

A: Both parts specify a minimum rotational life of 50,000 cycles, ensuring equivalent mechanical durability and operational longevity.

Q: Do these encoders include detent or built-in switch functionality?

A: No. Both the 25BSP10-Q-1-36C and 25BP45-Q-2-08C are non-detent encoders without built-in switches. They provide pure quadrature incremental output only.

Q: What mounting configuration do these parts use?

A: Both parts use PCB through-hole mounting with right-angle orientation and PC pin termination, enabling direct soldering to standard printed circuit boards.

Q: Are there any special storage or handling requirements?

A: No. Both parts carry Moisture Sensitivity Level 1 (unlimited), indicating no special moisture control, baking, or handling procedures are required during storage or assembly.