Grayhill 62S18-L4-P Rotary Encoder Optical 20PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 62S18-L4-P is an optical rotary encoder with 20 pulses per revolution (PPR), delivering quadrature incremental output. This vertical-mount encoder features a 1/4" diameter flatted end actuator, integrated detent mechanism, and built-in switch functionality. The device operates at 5V supply voltage and is mounted via PCB through-hole termination with PC pin connections.

The 62S18-L4-P maintains Active product status with ROHS3 compliance and REACH unaffected classification. Substitute parts become necessary when application requirements specify different pulse resolution, inventory constraints exist, or alternative series configurations are preferred while maintaining core electrical and mechanical compatibility.

Substiute Parts

62S18-L4-P

Grayhill Inc.In Stock: 89262S18-L4-P Datasheet

Current PartRFQ

62N30-P

Grayhill Inc.In Stock: 82662N30-P Datasheet

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62S22-M5-P

Grayhill Inc.In Stock: 141762S22-M5-P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 62S18-L4-P are qualified based on strict electrical and mechanical parameter alignment. All substitute encoders must maintain the following core compatibility criteria:

Fixed Parameters (Non-Negotiable for Substitution):

• Encoder Type: Optical
• Output Type: Quadrature (Incremental)
• Voltage Supply: 5V
• Actuator Type: 1/4" Dia Flatted End
• Detent: Yes
• Built-in Switch: Yes
• Mounting Type: PCB, Through Hole
• Orientation: Vertical
• Termination Style: PC Pin
• Rotational Life: 1M cycles minimum
• Manufacturer: Grayhill Inc.
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter (Allows Substitution):

• Pulses per Revolution (PPR): 12, 16, or 20 PPR configurations available

The substitute parts 62S22-M5-P (16 PPR) and 62N30-P (12 PPR) differ only in pulse resolution while maintaining identical electrical characteristics, mechanical form factor, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 62S18-L4-P and its substitute parts depends on application-specific pulse resolution requirements and inventory availability.

62S18-L4-P (20 PPR): Select this configuration when applications require maximum angular resolution at 20 pulses per revolution. This part maintains Active product status with full ROHS3 compliance and REACH unaffected classification. Current inventory of 843 units supports standard procurement timelines.

62S22-M5-P (16 PPR): This substitute provides reduced pulse resolution at 16 PPR while maintaining identical electrical and mechanical specifications. The 62S22-M5-P remains within the same 62S series and carries Active product status with equivalent compliance certifications. Highest current inventory at 1309 units.

62N30-P (12 PPR): This substitute operates at 12 PPR, representing the lowest resolution option. The 62N30-P belongs to the 62N series but maintains all required electrical characteristics, mechanical compatibility, and compliance standards. Current inventory of 755 units is available.

All three parts carry ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Selection should be based on the specific angular resolution required by the application circuit design.

Frequently Asked Questions (FAQ)

Q: Can the 62S22-M5-P (16 PPR) directly replace the 62S18-L4-P (20 PPR) in an existing circuit?

A: The 62S22-M5-P is mechanically and electrically compatible with the 62S18-L4-P. Both devices share identical 5V supply voltage, quadrature output type, 1/4" flatted end actuator, detent mechanism, built-in switch, PCB through-hole mounting, and PC pin termination. The difference is pulse resolution: 16 PPR versus 20 PPR. Circuit compatibility depends on whether the application firmware or hardware can accommodate the lower pulse count per revolution.

Q: What is the difference between the 62S series and 62N series encoders?

A: The 62S18-L4-P belongs to the 62S series, while the 62N30-P belongs to the 62N series. Both series use identical optical encoding technology, 5V supply voltage, quadrature incremental output, and vertical PCB through-hole mounting with PC pin termination. The series designation reflects internal design variations, but all electrical and mechanical parameters remain aligned for substitution purposes.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 62S18-L4-P, 62S22-M5-P, and 62N30-P all carry ROHS3 compliance certification. All three parts are REACH unaffected and classified under ECCN EAR99.

Q: What is the minimum rotational life specification for these encoders?

A: All three substitute parts specify a minimum rotational life of 1 million cycles (1M). This specification applies to the 62S18-L4-P, 62S22-M5-P, and 62N30-P equally.

Q: How does pulse per revolution (PPR) affect application performance?

A: Pulses per revolution determine angular resolution. The 62S18-L4-P at 20 PPR provides finer angular resolution than the 62S22-M5-P at 16 PPR or the 62N30-P at 12 PPR. Applications requiring precise position tracking benefit from higher PPR values. Lower PPR configurations reduce the number of pulses generated per complete shaft rotation, which may be acceptable for applications with less stringent resolution requirements.

Q: What is the Moisture Sensitivity Level (MSL) rating?

A: All three parts carry MSL 1 (Unlimited) classification, indicating unlimited shelf life under standard storage conditions without moisture control requirements.

Q: Can these encoders be used interchangeably in production?

A: Mechanical and electrical interchangeability is confirmed for all three parts. However, firmware or software modifications may be required if the application is designed specifically for 20 PPR operation. The 62S22-M5-P (16 PPR) and 62N30-P (12 PPR) will generate proportionally fewer pulses per revolution, which must be accommodated in the receiving circuit or microcontroller firmware.