RNF18FTD150R Equivalent & Substitute Parts

Part Overview

The RNF18FTD150R is a 150 Ohm metal film axial through-hole resistor manufactured by Stackpole Electronics Inc. This component is rated at 1/8W (0.125W) with ±1% tolerance and features flame retardant coating with safety certification. The part is currently in active production status with 771 units available in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring 150 Ohm resistive elements with comparable electrical and mechanical characteristics.

Substiute Parts

RNF18FTD150R

Stackpole Electronics IncIn Stock: 794RNF18FTD150R Datasheet

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RNMF14FTC150R

Stackpole Electronics IncIn Stock: 41269RNMF14FTC150R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTC150R qualifies as a substitute for the RNF18FTD150R based on the following alignment of critical parameters:

• Identical resistance value: 150 Ohms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical package type: Axial
• Identical operating temperature range: -55°C to 155°C
• Identical features: Flame Retardant Coating, Safety
• Identical RoHS compliance: ROHS3 Compliant

The primary difference is the power rating: the RNMF14FTC150R is rated at 0.25W (1/4W), which exceeds the 0.125W (1/8W) rating of the RNF18FTD150R. This higher power rating makes the RNMF14FTC150R suitable for applications where the RNF18FTD150R is specified, provided the physical dimensions and thermal characteristics of the application accommodate the substitute component.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTD150R and RNMF14FTC150R are active production components manufactured by Stackpole Electronics Inc and maintain full ROHS3 compliance and REACH unaffected status. The RNMF14FTC150R provides enhanced thermal performance with a lower temperature coefficient (±50ppm/°C versus ±100ppm/°C), making it suitable for applications requiring tighter resistance stability across temperature variations. The higher power rating of the RNMF14FTC150R (0.25W versus 0.125W) permits operation in circuits with greater power dissipation requirements while maintaining the same 150 Ohm resistance and ±1% tolerance specification. Physical dimensions are nearly identical, with negligible differences in diameter (0.070" versus 0.071") and matching length (0.130"). Selection between these components should be based on circuit power requirements and thermal stability needs.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC150R replace the RNF18FTD150R in all applications?

A: The RNMF14FTC150R is electrically and mechanically compatible with the RNF18FTD150R for applications where the circuit power dissipation does not exceed 0.125W. For circuits requiring higher power dissipation, the RNMF14FTC150R's 0.25W rating provides additional margin. Physical dimensions are nearly identical, permitting direct substitution in standard through-hole PCB layouts.

Q: What is the significance of the temperature coefficient difference?

A: The RNMF14FTC150R has a temperature coefficient of ±50ppm/°C compared to ±100ppm/°C for the RNF18FTD150R. This means the RNMF14FTC150R exhibits half the resistance change per degree Celsius, providing superior stability in applications subject to wide temperature variations or requiring tighter tolerance maintenance across the -55°C to 155°C operating range.

Q: Are there packaging differences between these parts?

A: The RNF18FTD150R is supplied in Tape & Reel (TR) format, while the RNMF14FTC150R is supplied in Cut Tape (CT) format. Both are axial through-hole components with compatible lead spacing and soldering characteristics. Packaging format selection depends on assembly process requirements and volume needs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RNF18FTD150R and RNMF14FTC150R are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.