RNF18FTD105K Equivalent & Substitute Parts

Part Overview

The RNF18FTD105K is a 105 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status with ROHS3 compliance and flame retardant coating for safety applications. Substitute parts are identified to address inventory availability, packaging format requirements, or power rating specifications while maintaining electrical and mechanical compatibility within defined parameters.

Substiute Parts

RNF18FTD105K

Stackpole Electronics IncIn Stock: 833RNF18FTD105K Datasheet

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RNMF14FTD105K

Stackpole Electronics IncIn Stock: 2910RNMF14FTD105K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTD105K qualifies as a substitute for the RNF18FTD105K based on the following matching parameters:

• Resistance value: 105 kOhms (identical)
• Tolerance: ±1% (identical)
• Composition: Metal Film (identical)
• Package type: Axial (identical)
• Temperature coefficient: ±100ppm/°C (identical)
• Operating temperature range: -55°C to 155°C (identical)
• Features: Flame Retardant Coating, Safety (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Number of terminations: 2 (identical)

The primary difference is the power rating: the substitute part is rated at 0.25W (1/4W) versus the original 0.125W (1/8W). This represents an upgrade in power dissipation capability. The substitute also differs in packaging format (Cut Tape versus Tape & Reel) and physical dimensions (0.070" Dia x 0.130" L versus 0.071" Dia x 0.130" L).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTD105K and RNMF14FTD105K maintain Active product status from Stackpole Electronics Inc and satisfy ROHS3 compliance requirements. The electrical specifications—resistance value, tolerance, temperature coefficient, and operating temperature range—are identical between the two parts. Both components feature flame retardant coating and safety designation.

Selection between these parts should be based on application power dissipation requirements and packaging format availability. The RNMF14FTD105K provides increased power handling capability at 0.25W compared to the 0.125W rating of the RNF18FTD105K. Physical dimensions are nearly equivalent, with negligible differences in diameter (0.070" versus 0.071"). Packaging format differs: RNF18FTD105K is supplied in Tape & Reel format while RNMF14FTD105K is supplied in Cut Tape format.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTD105K directly replace the RNF18FTD105K in all applications?

A: The RNMF14FTD105K is electrically and mechanically compatible with the RNF18FTD105K for circuits designed around the 0.125W power rating. The higher power rating of the substitute part (0.25W) does not create incompatibility. Physical dimensions are nearly identical, supporting direct board-level substitution. Packaging format differs (Cut Tape versus Tape & Reel), which may affect assembly line integration.

Q: What are the key parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching resistance value (105 kOhms), tolerance (±1%), composition (Metal Film), package type (Axial), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3). The power rating difference represents an upgrade rather than a limitation.

Q: Are there packaging considerations when using the substitute part?

A: Yes. The RNF18FTD105K is supplied in Tape & Reel (TR) format, while the RNMF14FTD105K is supplied in Cut Tape (CT) format. This difference affects procurement, storage, and automated assembly processes. Verify that your assembly equipment and supply chain can accommodate the Cut Tape packaging format.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99. Compliance certifications are identical between the two components.