Grayhill 25BSP30-Q-1-12C Rotary Encoder: Equivalent & Substitute Parts

Part Overview

The Grayhill 25BSP30-Q-1-12C is an active mechanical rotary encoder with 12 pulses per revolution (PPR) in quadrature (incremental) output configuration. This right-angle PCB-mounted encoder is designed for applications requiring precise rotational position feedback with mechanical detent-free operation. The part is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1), making it suitable for standard industrial and commercial environments. Substitute parts may be required due to inventory constraints, application-specific PPR requirements, or design optimization needs.

Substiute Parts

25BSP30-Q-1-12C

Grayhill Inc.In Stock: 96525BSP30-Q-1-12C 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 25BSP30-Q-1-12C is determined by the following critical parameters that must remain constant across equivalent parts:

Fixed Parameters (Non-Negotiable for Direct Substitution):

• 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: 50K cycles minimum
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter (Application-Dependent):

• Pulses per Revolution (PPR): May vary based on resolution requirements

The substitute part 25BP45-Q-2-08C maintains all fixed parameters but differs in PPR specification (8 PPR versus 12 PPR). This substitution is valid only when the application can accommodate the lower resolution output.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (25BSP30-Q-1-12C): The 25BSP30-Q-1-12C is the specified component for applications requiring 12 PPR resolution. This part is active, ROHS3 compliant, and REACH unaffected, meeting current regulatory requirements. Current inventory status shows 899 pieces in stock.

Substitute Part Selection (25BP45-Q-2-08C): The 25BP45-Q-2-08C is a valid substitute when application firmware or mechanical design can accommodate 8 PPR output instead of 12 PPR. Both parts share identical mechanical mounting, electrical interface, and compliance certifications. The substitute part is also active with 768 pieces in stock. Selection between these parts depends solely on the rotational resolution requirement of the end application.

Compliance Verification: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental regulations. MSL 1 rating on both parts indicates no special moisture handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can the 25BP45-Q-2-08C directly replace the 25BSP30-Q-1-12C in my application?

A: Direct replacement is possible only if your application can function with 8 PPR output instead of 12 PPR. All mechanical, electrical, and mounting characteristics are identical. Firmware or signal processing logic must be evaluated to confirm compatibility with the lower resolution output.

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

A: The sole technical difference is the pulses per revolution specification. The 25BSP30-Q-1-12C provides 12 PPR, while the 25BP45-Q-2-08C provides 8 PPR. All other parameters, including mechanical form factor, mounting method, output type, and compliance ratings, are identical.

Q: Are both parts suitable for the same environmental conditions?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Both are ROHS3 compliant and REACH unaffected, making them suitable for identical environmental applications.

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

A: Both the 25BSP30-Q-1-12C and 25BP45-Q-2-08C specify a minimum rotational life of 50,000 cycles, ensuring equivalent mechanical durability.

Q: Can I use these encoders interchangeably in a design?

A: Interchangeability depends on whether your circuit design and firmware can accommodate the PPR difference. The mechanical and electrical interfaces are identical, but the output resolution differs. Confirm that your signal processing chain can handle 8 PPR if substituting the 25BP45-Q-2-08C for the 25BSP30-Q-1-12C.

Q: Are there any supply voltage considerations for these parts?

A: No supply voltage is specified in the technical parameters for either part. Verify supply voltage requirements in the detailed component datasheet before integration.