RNF18FTD1K50 Equivalent & Substitute Parts

Part Overview

The RNF18FTD1K50 is a 1.5 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) with axial leads and flame retardant coating. Manufactured by Stackpole Electronics Inc, this component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications, particularly when higher power ratings or improved temperature stability are acceptable design parameters.

Substiute Parts

RNF18FTD1K50

Stackpole Electronics IncIn Stock: 800RNF18FTD1K50 Datasheet

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RNMF14FAD1K50

Stackpole Electronics IncIn Stock: 3330RNMF14FAD1K50 Datasheet

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RNMF14FTC1K50

Stackpole Electronics IncIn Stock: 52316RNMF14FTC1K50 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF18FTD1K50 are qualified based on the following criteria:

Electrical Equivalence: Resistance value (1.5 kOhms) and tolerance (±1%) must be identical. Operating temperature range (-55°C ~ 155°C) must be maintained or exceeded.

Mechanical Compatibility: Package type must remain Axial with 2 terminations. Physical dimensions must be compatible with existing PCB layouts.

Material & Safety: Metal film composition with flame retardant coating and safety features must be preserved. ROHS3 compliance and REACH unaffected status must be maintained.

Power Rating Flexibility: Substitute parts may have equal or higher power ratings (0.125W or greater) without affecting circuit functionality, provided all other parameters remain equivalent.

The identified substitutes—RNMF14FAD1K50 and RNMF14FTC1K50—meet all electrical and mechanical requirements while offering higher power ratings (0.25W / 1/4W) and equivalent or superior temperature coefficients.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and full ROHS3 compliance with REACH unaffected designation, ensuring regulatory consistency across substitution options.

RNMF14FAD1K50 provides direct electrical and mechanical substitution with doubled power capacity (0.25W vs 0.125W) while maintaining identical temperature coefficient performance (±100ppm/°C). Physical dimensions remain compatible with standard axial lead spacing.

RNMF14FTC1K50 offers the same power upgrade as RNMF14FAD1K50 with enhanced temperature stability through a superior temperature coefficient of ±50ppm/°C, providing improved long-term accuracy in temperature-sensitive applications. Packaging format (Cut Tape) differs from the main part (Tape & Reel) but does not affect electrical or mechanical compatibility.

Selection between substitutes depends on application requirements: RNMF14FAD1K50 for equivalent thermal performance, or RNMF14FTC1K50 for enhanced temperature coefficient stability when precision drift minimization is critical.

Frequently Asked Questions (FAQ)

Q: Can RNMF14FAD1K50 and RNMF14FTC1K50 be used interchangeably with RNF18FTD1K50?

A: Yes. Both substitutes maintain identical resistance (1.5 kOhms), tolerance (±1%), operating temperature range (-55°C ~ 155°C), and axial package configuration. The higher power ratings (0.25W vs 0.125W) do not prevent substitution and may improve thermal margin in power-dissipative applications.

Q: What is the difference between RNMF14FAD1K50 and RNMF14FTC1K50?

A: Both parts are electrically and mechanically equivalent with identical resistance, tolerance, and power rating. The primary difference is temperature coefficient: RNMF14FAD1K50 has ±100ppm/°C (matching the main part), while RNMF14FTC1K50 has ±50ppm/°C, offering superior temperature stability for precision applications.

Q: Are there packaging differences between these parts?

A: Yes. RNF18FTD1K50 is supplied in Tape & Reel (TR) format, while both substitutes are supplied in Cut Tape (CT) format. This affects procurement and handling but does not impact electrical performance or PCB mounting compatibility.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, ensuring regulatory consistency for applications requiring these certifications.

Q: Can I use these substitutes in high-temperature applications?

A: Yes. All parts operate across the identical temperature range (-55°C ~ 155°C). For applications requiring minimal temperature-induced resistance drift, RNMF14FTC1K50 with its ±50ppm/°C coefficient is preferred over parts with ±100ppm/°C coefficient.