RNF14FTC205K Equivalent & Substitute Parts

Part Overview

The RNF14FTC205K is a 205 kOhms ±1% 0.25W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently active in production with 987 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across alternative manufacturers.

Substiute Parts

RNF14FTC205K

Stackpole Electronics IncIn Stock: 1022RNF14FTC205K Datasheet

Current PartRFQ

CMF55205K00FHEB

Vishay DaleIn Stock: 1803CMF55205K00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC205K are qualified based on the following criteria:

• Identical resistance value: 205 kOhms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical temperature coefficient: ±50ppm/°C
• Identical package type: Axial through-hole
• Identical features: Flame retardant coating and safety construction
• Compliance equivalence: ROHS3 compliant
• Compatible operating temperature range (substitute range must encompass or equal the main part range)

The CMF55205K00FHEB from Vishay Dale meets all substitution criteria. While the power rating differs (0.5W vs 0.25W), this represents an upgrade path where the substitute can handle equal or greater power dissipation, maintaining full compatibility in circuits designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The CMF55205K00FHEB qualifies as a direct substitute for the RNF14FTC205K based on electrical parameter equivalence and regulatory compliance. Both parts are ROHS3 compliant and maintain identical resistance, tolerance, and temperature coefficient specifications. The substitute part offers an extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and increased power dissipation capability (0.5W versus 0.25W), providing enhanced performance margins in thermal environments. The CMF55205K00FHEB also includes moisture-resistant construction as an additional feature. Physical dimensions are comparable and compatible with standard axial component footprints. Selection between these parts depends on application-specific thermal and environmental requirements, with the substitute offering greater operational headroom.

Frequently Asked Questions (FAQ)

Q: Can the CMF55205K00FHEB replace the RNF14FTC205K in existing designs?

A: Yes. Both parts share identical electrical specifications (205 kOhms ±1%, metal film, ±50ppm/°C temperature coefficient) and axial package configuration. The substitute's higher power rating and extended temperature range do not create compatibility issues in circuits designed for the original part.

Q: What is the significance of the power rating difference?

A: The RNF14FTC205K is rated for 0.25W dissipation, while the CMF55205K00FHEB is rated for 0.5W. This means the substitute can safely handle twice the power dissipation. In applications where the original part operates within its 0.25W limit, the substitute will perform identically with additional thermal margin.

Q: Are the physical dimensions compatible?

A: Both parts use axial package configuration with comparable dimensions. The RNF14FTC205K measures 0.093" diameter × 0.250" length, while the CMF55205K00FHEB measures 0.090" diameter × 0.240" length. These minor differences do not affect PCB footprint compatibility for standard axial component layouts.

Q: What compliance certifications apply to both parts?

A: Both the RNF14FTC205K and CMF55205K00FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing.

Q: Does the moisture-resistant feature of the substitute affect compatibility?

A: No. The moisture-resistant construction of the CMF55205K00FHEB is an additional feature that enhances performance in humid environments without affecting electrical or mechanical compatibility with the original part specification.