Grayhill 25BP11-Q-2-32F Rotary Encoder Mechanical 32PPR - Equivalent & Substitute Parts

Part Overview

The Grayhill 25BP11-Q-2-32F is an active mechanical rotary encoder with 32 pulses per revolution (PPR) output in quadrature (incremental) format. This encoder features a right-angle orientation with a 1/4" diameter flatted end actuator and PCB through-hole mounting. The part is RoHS compliant and REACH unaffected, with unlimited moisture sensitivity rating (MSL 1). With 856 units in current inventory, this component is actively produced and supported. Alternative models may be required when application specifications demand different pulse resolution or when primary inventory becomes unavailable.

Substiute Parts

25BP11-Q-2-32F

Grayhill Inc.In Stock: 87125BP11-Q-2-32F 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 25BP11-Q-2-32F is determined by strict alignment of the following critical parameters:

Fixed Compatibility Parameters (Must Match):

• Encoder Type: Mechanical
• Output Type: Quadrature (Incremental)
• Actuator Type: 1/4" Dia Flatted End
• Orientation: Right Angle
• Mounting Type: PCB, Through Hole
• Termination Style: PC Pin
• Rotational Life: 50K cycles minimum
• Detent: No
• Built-in Switch: No

Variable Parameter (Allows Substitution):

• Pulses per Revolution (PPR): Different PPR values are acceptable when application requirements permit resolution changes

The identified substitute part 25BP45-Q-2-08C maintains all fixed compatibility parameters while offering an alternative pulse resolution of 8 PPR instead of 32 PPR. Both parts are manufactured by Grayhill Inc., belong to the Series 25 family, and share identical mechanical and electrical interface specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 25BP11-Q-2-32F and 25BP45-Q-2-08C are active products with current manufacturing support. Selection between these parts is determined by application pulse resolution requirements:

25BP11-Q-2-32F Selection Criteria:

• Applications requiring 32 pulses per revolution resolution
• Systems with firmware or hardware configured for 32 PPR quadrature input
• Current inventory: 856 units available

25BP45-Q-2-08C Selection Criteria:

• Applications requiring 8 pulses per revolution resolution
• Systems with firmware or hardware configured for 8 PPR quadrature input
• Current inventory: 768 units available

Both parts meet identical compliance requirements (RoHS, REACH, EAR99 classification) and share equivalent mechanical durability specifications (50K rotational life cycles). The choice between these encoders depends solely on the pulse resolution specification of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 25BP45-Q-2-08C directly replace the 25BP11-Q-2-32F in an existing design?

A: Direct replacement is possible only if the application firmware or hardware can accept 8 PPR input instead of 32 PPR. The mechanical and electrical interfaces are identical, but the pulse resolution differs by a factor of 4. System recalibration may be required.

Q: What is the primary difference between these two encoder models?

A: The 25BP11-Q-2-32F provides 32 pulses per revolution, while the 25BP45-Q-2-08C provides 8 pulses per revolution. All other specifications—mechanical mounting, electrical interface, durability, and compliance certifications—are identical.

Q: Are both parts currently in production?

A: Yes. Both the 25BP11-Q-2-32F and 25BP45-Q-2-08C are active products with current manufacturing status and available inventory.

Q: Do these encoders require external power supply?

A: No supply voltage specification is provided for either part. Consult the detailed product datasheets for power requirements and electrical specifications.

Q: What is the packaging difference between these parts?

A: The 25BP11-Q-2-32F is packaged with standard packaging designation, while the 25BP45-Q-2-08C is supplied in bulk packaging. Both use identical PC pin termination for PCB through-hole mounting.

Q: Are there any RoHS compliance differences?

A: Both parts are RoHS compliant. The 25BP11-Q-2-32F carries RoHS Compliant status, while the 25BP45-Q-2-08C carries ROHS3 Compliant status. Both meet current RoHS requirements.