RNF18FTC91K0 Equivalent & Substitute Parts

Part Overview

The RNF18FTC91K0 is a 91 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, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently Active in product status with ROHS3 compliance and REACH unaffected classification. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this resistor category.

Substiute Parts

RNF18FTC91K0

Stackpole Electronics IncIn Stock: 1190RNF18FTC91K0 Datasheet

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RNMF14FTC91K0

Stackpole Electronics IncIn Stock: 4166RNMF14FTC91K0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the RNF18FTC91K0 is determined by maintaining the following critical parameters:

• Resistance value: 91 kOhms (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 ~ 155°C (exact match required)
• Package Type: Axial (exact match required)
• Features: Flame Retardant Coating, Safety (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The RNMF14FTC91K0 qualifies as a substitute part because it maintains all critical electrical and mechanical parameters. The primary difference is the power rating increase from 0.125W to 0.25W, which represents an upgrade in thermal capability while preserving all other specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTC91K0 and RNMF14FTC91K0 maintain Active product status with full ROHS3 compliance and REACH unaffected classification. The RNMF14FTC91K0 provides increased power dissipation capability at 0.25W compared to the 0.125W rating of the RNF18FTC91K0, while maintaining identical electrical characteristics and operating parameters. Physical dimensions are equivalent within manufacturing tolerances. Selection between these parts depends on thermal requirements of the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC91K0 be used as a direct replacement for the RNF18FTC91K0?

A: Yes. Both parts maintain identical resistance value (91 kOhms), tolerance (±1%), composition (metal film), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and package configuration (axial). The RNMF14FTC91K0 provides higher power rating (0.25W vs 0.125W) with equivalent physical dimensions.

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

A: The power rating differs: RNF18FTC91K0 is rated at 0.125W (1/8W), while RNMF14FTC91K0 is rated at 0.25W (1/4W). All other electrical and mechanical specifications remain identical.

Q: Are there packaging differences between these parts?

A: The RNF18FTC91K0 is supplied in Tape & Reel (TR) packaging, while the RNMF14FTC91K0 is supplied in Cut Tape (CT) packaging. Both use axial package configuration with equivalent physical dimensions.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8533.21.0090.

Q: Can the lower power-rated RNF18FTC91K0 be substituted for the RNMF14FTC91K0?

A: Substitution in the reverse direction is not recommended. The RNF18FTC91K0 has lower thermal capability and may not be suitable for applications requiring the higher power dissipation capacity of the RNMF14FTC91K0.