Grayhill Inc. 513361-9 Rotary Encoder Mechanical 9PPR Equivalent & Substitute Parts

Part Overview

The Grayhill Inc. 513361-9 is an active mechanical rotary encoder with 9 pulses per revolution (PPR) in BCD absolute output configuration. This vertical-orientation encoder features a 1/8" diameter flatted end actuator and is designed for panel and PCB through-hole mounting applications. The part is RoHS Compliant and REACH Unaffected, with unlimited moisture sensitivity rating (MSL 1). With 928 units in current stock and a rotational life rating of 25,000 cycles minimum, this encoder serves applications requiring precise mechanical position encoding. Alternative models within the Grayhill 51 series may be necessary when system specifications require different pulse-per-revolution counts or when inventory constraints necessitate substitution.

Substiute Parts

513361-9

Grayhill Inc.In Stock: 1015513361-9 Datasheet

Current PartRFQ

513374-8

Grayhill Inc.In Stock: 944513374-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 513361-9 is determined by strict parameter matching within the Grayhill 51 series mechanical rotary encoder family. The primary substitution candidate is the 513374-8, which maintains compatibility across the following critical parameters:

Matching Parameters (Substitution Basis):

• Manufacturer: Grayhill Inc.
• Series: 51
• Encoder Type: Mechanical
• Output Type: BCD (Absolute)
• Actuator Type: 1/8" Dia Flatted End
• Detent: Yes
• Built-in Switch: No
• Mounting Type: Panel, PCB Through Hole
• Orientation: Vertical
• Termination Style: PC Pin
• Rotational Life (Cycles Min): 25K
• RoHS Status: Compliant (RoHS3)
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN: EAR99

Differing Parameter:

• Pulses per Revolution: 513361-9 provides 9 PPR; 513374-8 provides 8 PPR

The 513374-8 is classified as a substitute only when system design specifications permit operation with 8 pulses per revolution instead of 9 pulses per revolution.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 513361-9

The 513361-9 remains the specified component when 9 pulses per revolution is a functional requirement. This part is Active in product status with full RoHS and REACH compliance. Current inventory of 928 units supports immediate procurement.

Substitute Part: 513374-8

The 513374-8 is an acceptable substitute only when the application design permits operation with 8 pulses per revolution. Both parts share identical mechanical, electrical, and compliance characteristics within the Grayhill 51 series. The 513374-8 carries ROHS3 compliance (enhanced RoHS standard) and is available in bulk packaging with 904 units in stock. Selection of the 513374-8 requires confirmation that the 8 PPR output specification aligns with system firmware, signal processing, or mechanical requirements.

Compliance Considerations

Both parts maintain Active product status and satisfy RoHS and REACH regulatory requirements. The ECCN classification (EAR99) and HTSUS code (8543.70.4500) are identical, ensuring equivalent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the 513374-8 (8 PPR) directly replace the 513361-9 (9 PPR) without system modifications?

A: Direct replacement is possible only if the receiving system is designed to accept 8 pulses per revolution. The PPR count is a functional output parameter that affects position resolution and signal timing. System firmware or signal processing logic must be compatible with the 8 PPR output.

Q: Are the mechanical mounting interfaces identical between 513361-9 and 513374-8?

A: Yes. Both encoders feature identical mounting specifications: 1/8" diameter flatted end actuator, panel and PCB through-hole mounting capability, vertical orientation, and PC pin termination. Physical installation is interchangeable.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: Both designations indicate RoHS compliance. ROHS3 represents the third iteration of the RoHS directive with updated substance restrictions. Both parts meet current regulatory requirements; ROHS3 indicates the 513374-8 meets the most recent standard revision.

Q: Does packaging type affect electrical or mechanical performance?

A: No. The 513361-9 is listed with "-" packaging notation, while the 513374-8 specifies bulk packaging. Packaging type affects logistics and handling but does not alter component performance, electrical characteristics, or mechanical function.

Q: Are both parts suitable for applications requiring 25,000 cycle minimum rotational life?

A: Yes. Both the 513361-9 and 513374-8 specify 25K cycles minimum rotational life, making them equivalent for durability requirements.

Q: What is the moisture sensitivity implication of MSL 1 (Unlimited)?

A: MSL 1 with unlimited rating indicates the component has no moisture sensitivity restrictions. Both parts can be stored and handled without special humidity control measures, and no floor life limitations apply after opening packaging.

Q: Can these encoders be used interchangeably in existing PCB designs?

A: Mechanical and electrical interfaces are interchangeable. However, the 8 PPR versus 9 PPR output difference requires verification that the receiving circuit, microcontroller firmware, or signal processing logic is configured to accept the substitute part's output specification.