RNF18FTC20K0 Equivalent & Substitute Parts

Part Overview

The RNF18FTC20K0 is a 20 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. Substitute parts may be required due to inventory constraints, application-specific power rating requirements, or packaging format preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF18FTC20K0

Stackpole Electronics IncIn Stock: 981RNF18FTC20K0 Datasheet

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RNMF14FTC20K0

Stackpole Electronics IncIn Stock: 42008RNMF14FTC20K0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTC20K0 qualifies as a substitute for the RNF18FTC20K0 based on the following allowed parameters:

• Identical resistance value: 20 kOhms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical temperature coefficient: ±50ppm/°C
• Identical operating temperature range: -55°C ~ 155°C
• Identical package type: Axial
• Identical features: Flame Retardant Coating, Safety
• Identical RoHS compliance: ROHS3 Compliant

The primary difference is the power rating: the substitute part is rated at 0.25W (1/4W) compared to the main part's 0.125W (1/8W). This represents an upgrade in power dissipation capability, making the substitute suitable for applications requiring equal or lower power dissipation than 0.125W.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF18FTC20K0 and RNMF14FTC20K0 maintain Active product status from Stackpole Electronics Inc and are ROHS3 Compliant. The RNMF14FTC20K0 provides identical electrical performance with increased power dissipation capability. Selection between these parts should be based on application power requirements and packaging format availability. The substitute part's higher power rating does not degrade performance in applications designed for the original 0.125W specification.

Frequently Asked Questions (FAQ)

Q: Can RNMF14FTC20K0 replace RNF18FTC20K0 in my circuit?

A: Yes. Both parts share identical resistance, tolerance, temperature coefficient, and operating temperature range. The substitute has a higher power rating (0.25W vs 0.125W), which is compatible with applications requiring 0.125W or less.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape wound on reels for automated assembly. Cut Tape (CT) packaging is supplied as individual tape segments. Both formats contain the same component; the difference is in handling and assembly method.

Q: Are there any thermal performance differences?

A: No. Both parts have identical temperature coefficient (±50ppm/°C) and operating temperature range (-55°C ~ 155°C).

Q: Does the higher power rating of the substitute affect circuit behavior?

A: No. Power rating indicates maximum dissipation capability. Using a higher-rated component in an application requiring lower power does not alter electrical performance.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected.