Equivalent & Substitute Parts for RNF14FTC1K30

Part Overview

The RNF14FTC1K30 is a 1.3 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 with tight tolerance specifications. The part is currently active in production with 780 pieces available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while accommodating design flexibility, supply chain optimization, or enhanced operational margins.

Substiute Parts

RNF14FTC1K30

Stackpole Electronics IncIn Stock: 886RNF14FTC1K30 Datasheet

Current PartRFQ

CMF551K3000FHEB

Vishay DaleIn Stock: 3409CMF551K3000FHEB Datasheet

UpgradeRFQ

CMF501K3000FHEB

Vishay DaleIn Stock: 867CMF501K3000FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC1K30 are qualified based on the following electrical and mechanical parameters:

Core Electrical Equivalence:

• Resistance value: 1.3 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)

Mechanical Compatibility:

• Package Type: Axial (exact match required)
• Number of Terminations: 2 (exact match required)

Compliance & Safety:

• RoHS3 Compliant (required)
• Flame Retardant Coating (required)
• Safety Construction (required)

Allowable Variations:

• Power Rating: May be equal or higher than 0.25W
• Operating Temperature Range: May be equal or extended
• Physical Dimensions: May vary within axial package constraints
• Packaging Format: May differ (Tape & Reel vs. Cut Tape)

Two substitute parts meet these criteria with differing power ratings and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

CMF501K3000FHEB (MFR Recommended): This substitute maintains identical electrical specifications and power rating to the RNF14FTC1K30 while offering extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C) and enhanced moisture resistance. Both parts are ROHS3 compliant and feature flame retardant, safety-rated construction. Physical dimensions are smaller (0.065" Dia x 0.150" L vs. 0.093" Dia x 0.250" L), which may provide layout advantages in space-constrained applications. This part is recommended for direct substitution in applications where the original specification is maintained.

CMF551K3000FHEB (Upgrade): This substitute provides doubled power dissipation capability (0.5W vs. 0.25W) with identical resistance, tolerance, and temperature coefficient. Extended operating temperature range (-55°C ~ 175°C) and moisture resistance are included. This option is suitable for applications requiring thermal margin or where power dissipation may exceed the original 0.25W specification. Physical dimensions are comparable to the main part (0.090" Dia x 0.240" L). Selection of this upgrade should be based on actual circuit power requirements.

Both substitutes are active products with established supply availability and full compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can CMF501K3000FHEB be used as a direct replacement for RNF14FTC1K30?

A: Yes. Both parts share identical resistance (1.3 kOhms), tolerance (±1%), power rating (0.25W), temperature coefficient (±50ppm/°C), and composition (metal film). Both are ROHS3 compliant with flame retardant, safety-rated construction. The CMF501K3000FHEB offers extended operating temperature range and moisture resistance as additional benefits. Physical dimensions differ slightly but both are axial package format.

Q: What is the difference between CMF551K3000FHEB and CMF501K3000FHEB?

A: The primary difference is power rating: CMF551K3000FHEB is rated at 0.5W (1/2W) while CMF501K3000FHEB is rated at 0.25W (1/4W), matching the original RNF14FTC1K30. All other electrical parameters are identical. Physical dimensions also differ slightly. Selection depends on whether your circuit requires the additional power dissipation capability.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: Both substitute parts maintain axial package format with two terminations, ensuring compatibility with through-hole PCB layouts designed for the RNF14FTC1K30. Physical dimensions vary slightly between parts, but all remain within standard axial resistor envelope constraints. Verify PCB footprint spacing accommodates the specific substitute part dimensions if space is critical.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. Both CMF501K3000FHEB and CMF551K3000FHEB are ROHS3 compliant, REACH unaffected, and feature flame retardant, safety-rated construction identical to the RNF14FTC1K30. Both are classified under ECCN EAR99 and HTSUS 8533.21.0090.

Q: Why would I choose the 0.5W rated CMF551K3000FHEB over the 0.25W rated CMF501K3000FHEB?

A: The CMF551K3000FHEB provides thermal margin in applications where power dissipation approaches or exceeds the 0.25W specification. The doubled power rating reduces component stress and extends operational life in high-dissipation circuits. Selection should be based on actual circuit power requirements and thermal design considerations.