RNF14FTD19K1 Equivalent & Substitute Parts

Part Overview

The RNF14FTD19K1 is a 19.1 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance values in compact form factors. The part is currently active in production with 967 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit higher power ratings or improved thermal characteristics.

Substiute Parts

RNF14FTD19K1

Stackpole Electronics IncIn Stock: 982RNF14FTD19K1 Datasheet

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CMF5519K100FHEB

Vishay DaleIn Stock: 4442CMF5519K100FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF5519K100FHEB qualifies as a substitute based on the following matching parameters:

• Identical resistance value: 19.1 kOhms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical package type: Axial
• Identical number of terminations: 2
• Identical RoHS compliance: ROHS3 Compliant
• Identical REACH status: REACH Unaffected

The substitute part exceeds the original specification in power rating (0.5W vs 0.25W) and operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C), making it suitable for applications where the original part is unavailable or where enhanced thermal performance is beneficial.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTD19K1 and CMF5519K100FHEB meet ROHS3 compliance and REACH unaffected status, qualifying them for equivalent use in regulated applications. The CMF5519K100FHEB provides superior thermal performance with a lower temperature coefficient (±50ppm/°C vs ±100ppm/°C) and extended operating temperature range to 175°C. The substitute part's higher power rating (0.5W vs 0.25W) ensures adequate margin in circuits where the original 0.25W specification is met. Both components maintain identical electrical characteristics (19.1 kOhms ±1%) and axial package configuration, supporting direct functional substitution in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CMF5519K100FHEB replace RNF14FTD19K1 in all applications?

A: Yes, for applications operating within the original part's specifications. The substitute part's higher power rating and extended temperature range provide additional design margin without affecting electrical performance at the specified 19.1 kOhms ±1% resistance value.

Q: What are the physical dimension differences?

A: The CMF5519K100FHEB is slightly smaller (0.090" Dia x 0.240" L) compared to the RNF14FTD19K1 (0.093" Dia x 0.250" L). Both maintain axial package configuration and 2-termination design, suitable for standard through-hole PCB layouts.

Q: Are there compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for equivalent use in regulated industries.

Q: Why does the substitute have a lower temperature coefficient?

A: The CMF5519K100FHEB's ±50ppm/°C temperature coefficient represents improved stability compared to the RNF14FTD19K1's ±100ppm/°C specification. This provides better resistance value stability across the operating temperature range.

Q: What is the significance of the moisture resistant feature in the substitute?

A: The CMF5519K100FHEB includes moisture resistant construction in addition to flame retardant coating. This feature enhances reliability in humid or high-moisture environments without affecting electrical equivalence for standard applications.