81C1A-E28-A13 Equivalent & Substitute Parts

Part Overview

The 81C1A-E28-A13 is a 5k Ohm 2W Cermet linear panel mount potentiometer manufactured by Bourns Inc. as part of the 81 series. This component features a 1-gang configuration with side adjustment, slotted actuator, and PC pin termination suitable for panel-mounted applications. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity for existing designs and applications.

Substiute Parts

81C1A-E28-A13

Bourns Inc.In Stock: 92481C1A-E28-A13 Datasheet

Current PartRFQ

81C1A-E28-A13L

Bourns Inc.In Stock: 128081C1A-E28-A13L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 81C1A-E28-A13L qualifies as a direct substitute based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Resistance value: 5k Ohm (exact match)
• Power rating: 2W (exact match)
• Tolerance: ±10% (exact match)
• Taper characteristic: Linear (exact match)
• Number of gangs: 1 (exact match)
• Resistive material: Cermet (exact match)
• Termination: PC Pins (exact match)
• Mounting configuration: Panel Mount (exact match)
• Rotation angle: 300° (exact match)
• Temperature coefficient: ±150ppm/°C (exact match)
• Physical dimensions and bushing thread: Identical (exact match)

The substitute part maintains full compatibility with the original design specifications and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

The 81C1A-E28-A13L is the appropriate selection for new designs and component replacement applications. The original 81C1A-E28-A13 is obsolete and no longer actively manufactured. The substitute part is currently in active production status with improved regulatory compliance.

The 81C1A-E28-A13L meets ROHS3 compliance requirements, whereas the original part is non-compliant. For applications subject to RoHS directives or environmental regulations, the substitute part is the required choice. The substitute part is also REACH Affected, indicating compliance with chemical substance regulations.

Both parts share identical electrical performance characteristics, mechanical dimensions, and functional specifications. Direct substitution is valid for all applications where the original part was specified.

Frequently Asked Questions (FAQ)

Q: Can the 81C1A-E28-A13L be used as a direct replacement for the 81C1A-E28-A13?

A: Yes. All electrical parameters, mechanical dimensions, and functional characteristics are identical. The substitute part maintains full compatibility with existing designs and PCB layouts.

Q: What is the primary reason to transition from the 81C1A-E28-A13 to the 81C1A-E28-A13L?

A: The original part is obsolete and no longer in production. The substitute part is actively manufactured and available. Additionally, the substitute part meets ROHS3 compliance standards, whereas the original does not.

Q: Are there any differences in packaging between these parts?

A: The original part packaging is unspecified. The substitute part is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Do these parts have identical mechanical mounting characteristics?

A: Yes. Both parts feature identical panel mount configuration, bushing thread size (1/4-32), body dimensions (0.625" x 0.625" square face), actuator specifications, and PC pin termination.

Q: Are the electrical performance specifications identical?

A: Yes. Both parts have identical 5k Ohm resistance, 2W power rating, ±10% tolerance, linear taper, ±150ppm/°C temperature coefficient, and 300° rotation angle.

Q: What regulatory compliance differences exist between these parts?

A: The 81C1A-E28-A13L is ROHS3 compliant and REACH Affected. The original 81C1A-E28-A13 is RoHS non-compliant and REACH Unaffected. For applications requiring regulatory compliance, the substitute part is mandatory.