RNF18FTC1K50 Equivalent & Substitute Parts

Part Overview

The RNF18FTC1K50 is a 1.5 kOhms ±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 construction suitable for applications requiring precision resistance values with tight tolerance specifications. The part maintains Active product status with 1010 units currently in stock. Substitute parts become necessary when design requirements demand higher power ratings, alternative packaging formats, or when primary inventory becomes unavailable.

Substiute Parts

RNF18FTC1K50

Stackpole Electronics IncIn Stock: 1049RNF18FTC1K50 Datasheet

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RNMF14FTC1K50

Stackpole Electronics IncIn Stock: 52316RNMF14FTC1K50 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTC1K50 qualifies as a direct substitute based on the following matching parameters:

• Identical resistance value: 1.5 kOhms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical package type: Axial
• Identical temperature coefficient: ±50ppm/°C
• Identical operating temperature range: -55°C to 155°C
• Identical RoHS compliance: ROHS3 Compliant
• Identical number of terminations: 2

The primary difference is the power rating upgrade from 0.125W to 0.25W (1/4W), which represents a higher power capacity while maintaining all other electrical and mechanical specifications. The physical dimensions remain nearly identical (0.071" vs 0.070" diameter; 0.130" length for both).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTC1K50 and RNMF14FTC1K50 maintain Active product status and full ROHS3 compliance with REACH Unaffected designation. Selection between these parts depends on circuit power dissipation requirements. The RNF18FTC1K50 operates at 0.125W maximum, while the RNMF14FTC1K50 provides 0.25W capacity. Applications requiring power dissipation below 0.125W can use either part interchangeably. Circuits with power dissipation between 0.125W and 0.25W require the RNMF14FTC1K50. Both parts share identical electrical characteristics including resistance, tolerance, temperature coefficient, and operating temperature range, ensuring functional equivalence within their respective power ratings.

Frequently Asked Questions (FAQ)

Can RNMF14FTC1K50 replace RNF18FTC1K50 in all applications?

The RNMF14FTC1K50 can replace the RNF18FTC1K50 when circuit power dissipation does not exceed 0.125W. The higher power rating of the substitute part does not create compatibility issues in lower-power applications. Physical dimensions are nearly identical, ensuring PCB layout compatibility.

What is the primary difference between these parts?

The power rating differs: RNF18FTC1K50 is rated at 0.125W while RNMF14FTC1K50 is rated at 0.25W. All other electrical parameters including resistance value, tolerance, temperature coefficient, and operating temperature range are identical.

Are packaging formats interchangeable?

RNF18FTC1K50 comes in Tape & Reel (TR) format while RNMF14FTC1K50 is supplied in Cut Tape (CT) format. Both are axial through-hole components with compatible lead configurations. Packaging format selection depends on assembly process requirements rather than electrical compatibility.

Do both parts meet the same compliance standards?

Yes. Both parts are ROHS3 Compliant and REACH Unaffected, meeting identical regulatory requirements for electronic component applications.

What determines substitution eligibility?

Substitution eligibility is determined by matching resistance value (1.5 kOhms), tolerance (±1%), composition (Metal Film), package type (Axial), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). Power rating must be equal to or greater than the original part's requirement.