RNF18FTC330R Equivalent & Substitute Parts

Part Overview

The RNF18FTC330R is a 330 Ohms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-rated construction suitable for general-purpose electronic applications. The part maintains Active product status with 881 units currently in stock. Substitute parts are identified to address application requirements for higher power dissipation or alternative packaging formats while maintaining core electrical specifications.

Substiute Parts

RNF18FTC330R

Stackpole Electronics IncIn Stock: 983RNF18FTC330R Datasheet

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RNMF14FTC330R

Stackpole Electronics IncIn Stock: 33300RNMF14FTC330R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF18FTC330R is determined by the following parameters:

• Resistance value: 330 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (exact match required)
• Package Type: Axial (exact match required)
• Compliance: ROHS3 Compliant (exact match required)

The RNMF14FTC330R qualifies as a substitute based on matching all core electrical and mechanical parameters. The primary difference is the power rating upgrade from 0.125W to 0.25W, which represents a higher power dissipation capability within the same physical package family and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTC330R and RNMF14FTC330R maintain Active product status and full compliance with ROHS3 and REACH requirements. Selection between these parts is determined by power dissipation requirements in the application circuit. The RNF18FTC330R is suitable for applications with power dissipation up to 0.125W. The RNMF14FTC330R provides increased power handling capacity at 0.25W while maintaining identical electrical characteristics and operating temperature range. Both components are manufactured by Stackpole Electronics Inc and feature identical metal film construction with flame retardant coating and safety features. Packaging format differs between Tape & Reel (TR) for the main part and Cut Tape (CT) for the substitute, which may influence procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RNMF14FTC330R replace RNF18FTC330R in any application?

A: The RNMF14FTC330R is electrically and mechanically compatible with RNF18FTC330R. The higher power rating (0.25W vs 0.125W) makes it suitable for applications requiring greater power dissipation. Physical dimensions are nearly identical (0.070" vs 0.071" diameter; both 0.130" length), ensuring compatibility with standard axial component footprints.

Q: What is the primary difference between these two parts?

A: The primary difference is the power rating. RNF18FTC330R is rated at 0.125W (1/8W), while RNMF14FTC330R is rated at 0.25W (1/4W). All other electrical parameters, including resistance, tolerance, temperature coefficient, and operating temperature range, are identical.

Q: Are there packaging considerations when substituting?

A: Yes. RNF18FTC330R is supplied in Tape & Reel (TR) format, while RNMF14FTC330R is supplied in Cut Tape (CT) format. This difference may affect procurement lead times, minimum order quantities, and assembly line compatibility depending on your manufacturing process.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RNF18FTC330R and RNMF14FTC330R are ROHS3 Compliant and REACH Unaffected, meeting identical regulatory requirements for electronic component applications.

Q: What determines if a substitute is valid for this resistor?

A: Valid substitutes must match the following parameters: 330 Ohms resistance, ±1% tolerance, metal film composition, ±50ppm/°C temperature coefficient, -55°C to 155°C operating temperature range, axial package type, and ROHS3 compliance. Deviations in any of these parameters disqualify a component as a direct substitute.