RNF18FTC150K Equivalent & Substitute Parts

Part Overview

The RNF18FTC150K is a 150 kOhms ±1% metal film axial through-hole resistor rated at 0.125W (1/8W) manufactured by Stackpole Electronics Inc. This component is designed for applications requiring precision resistance with flame retardant coating and safety features. The part is currently in active production status with 790 pieces available in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

RNF18FTC150K

Stackpole Electronics IncIn Stock: 880RNF18FTC150K Datasheet

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RNMF14FTC150K

Stackpole Electronics IncIn Stock: 8591RNMF14FTC150K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTC150K qualifies as a substitute for the RNF18FTC150K based on the following electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 150 kOhms (identical)
• Tolerance: ±1% (identical)
• Composition: Metal Film (identical)
• Temperature Coefficient: ±50ppm/°C (identical)
• Operating Temperature Range: -55°C to 155°C (identical)
• Package Type: Axial (identical)
• RoHS Status: ROHS3 Compliant (identical)

Allowable Difference:

• Power Rating: 0.25W (1/4W) versus 0.125W (1/8W) — The substitute has a higher power rating, which is acceptable for direct replacement as it provides equal or greater capability in the same footprint class.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTC150K and RNMF14FTC150K are active production components manufactured by Stackpole Electronics Inc with identical RoHS3 compliance status. The RNMF14FTC150K provides a higher power rating (0.25W versus 0.125W) while maintaining all other electrical specifications. Selection between these parts depends on circuit power dissipation requirements and available inventory. The RNMF14FTC150K offers 8500 pieces in stock compared to 790 pieces for the RNF18FTC150K, providing greater availability for production applications.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC150K replace the RNF18FTC150K in all applications?

A: Yes, the RNMF14FTC150K is electrically and mechanically compatible. The higher power rating (0.25W versus 0.125W) ensures the substitute can handle equal or greater power dissipation in the same circuit topology.

Q: Are there dimensional differences between these parts?

A: Both parts are axial package with 0.130" length. Diameter differs slightly: RNF18FTC150K is 0.071" (1.80mm) and RNMF14FTC150K is 0.070" (1.78mm). This negligible difference does not affect PCB layout or mechanical fit.

Q: Do both parts meet the same compliance standards?

A: Yes, both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What is the difference between the RNF and RNMF series?

A: The RNF series is the standard line, while RNMF is the mini series. The RNMF14FTC150K offers higher power rating in a comparable footprint.

Q: Which part should be selected for new designs?

A: Selection should be based on circuit power dissipation requirements and supply chain availability. Both parts are active production components suitable for new designs.