RNF14FTC30R1 Equivalent & Substitute Parts

Part Overview

The RNF14FTC30R1 is a 30.1 Ohms ±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 general-purpose applications requiring precision resistance values in compact form factors. The part is Active status and widely available in inventory (954 Pcs in stock). Substitute parts are identified when original stock becomes unavailable, when higher power ratings are required for thermal margin, or when alternative packaging formats better suit assembly requirements.

Substiute Parts

RNF14FTC30R1

Stackpole Electronics IncIn Stock: 1032RNF14FTC30R1 Datasheet

Current PartRFQ

CMF5530R100FHEB

Vishay DaleIn Stock: 2728CMF5530R100FHEB Datasheet

UpgradeRFQ

CMF5030R100FHEB

Vishay DaleIn Stock: 1463CMF5030R100FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC30R1 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 30.1 Ohms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C
• Package Type: Axial through-hole
• RoHS Compliance: ROHS3 Compliant

Allowable Variations:

• Power rating: Equal or higher than 0.25W
• Operating temperature range: Equal or higher upper limit
• Physical dimensions: Axial package form factor
• Packaging format: Tape & Reel or Cut Tape acceptable
• Manufacturer: Alternative qualified manufacturers

Two substitute parts meet these criteria: CMF5030R100FHEB (direct 1/4W equivalent from Vishay Dale) and CMF5530R100FHEB (upgraded 1/2W variant from Vishay Dale).

Parameter Comparison

Engineering Selection Recommendations

CMF5030R100FHEB (Manufacturer Recommended Substitute): This part is the direct electrical and mechanical equivalent to the RNF14FTC30R1. Both are 30.1 Ohms ±1% 0.25W metal film axial resistors with identical temperature coefficients and RoHS3 compliance. The CMF5030R100FHEB offers extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and includes moisture-resistant construction. Physical dimensions are smaller (0.065" Dia x 0.150" L), which may require PCB layout verification for through-hole spacing. This part is suitable for direct substitution in applications where the original part is unavailable.

CMF5530R100FHEB (Upgrade Substitute): This part provides the same 30.1 Ohms ±1% resistance and tolerance but with doubled power rating (0.5W versus 0.25W). The CMF5530R100FHEB is appropriate when thermal margin is required or when circuit conditions demand higher power dissipation capability. Extended operating temperature range (-55°C ~ 175°C) and moisture-resistant features provide additional environmental protection. Physical dimensions (0.090" Dia x 0.240" L) are slightly smaller than the original part. This upgrade is suitable for applications where the original 0.25W rating may be marginal under worst-case operating conditions.

Both substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical electrical specifications (resistance, tolerance, temperature coefficient) required for direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can CMF5030R100FHEB be used as a direct replacement for RNF14FTC30R1? A: Yes. Both parts are 30.1 Ohms ±1% 0.25W metal film axial resistors with ±50ppm/°C temperature coefficient. Electrical performance is identical. Physical dimensions differ slightly (CMF5030R100FHEB is smaller), requiring verification that PCB through-hole spacing accommodates the smaller form factor.

Q: What is the advantage of using CMF5530R100FHEB over CMF5030R100FHEB? A: CMF5530R100FHEB provides doubled power rating (0.5W versus 0.25W) while maintaining identical resistance and tolerance specifications. This upgrade is beneficial when circuit analysis indicates the 0.25W rating may be insufficient under peak operating conditions or when thermal margin is desired.

Q: Are there any compliance differences between the main part and substitutes? A: No. All three parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is equivalent across all options.

Q: Do the substitute parts have different operating temperature ranges? A: Yes. The RNF14FTC30R1 operates from -55°C to 155°C, while both Vishay Dale substitutes (CMF5030R100FHEB and CMF5530R100FHEB) operate from -55°C to 175°C. The extended upper temperature limit provides additional thermal headroom in high-temperature applications.

Q: What packaging format differences exist? A: The RNF14FTC30R1 is supplied in Tape & Reel (TR) format. Both substitute parts are supplied in Cut Tape (CT) format. Assembly process compatibility should be verified with manufacturing equipment specifications.

Q: Are physical dimensions critical for substitution? A: Yes. While all parts are axial through-hole resistors, dimensional differences exist. The CMF5030R100FHEB (0.065" Dia x 0.150" L) is significantly smaller than the original RNF14FTC30R1 (0.093" Dia x 0.250" L). PCB layout, lead spacing, and component clearance must be verified before substitution.

Q: Do the substitute parts include moisture-resistant features? A: Yes. Both CMF5030R100FHEB and CMF5530R100FHEB include moisture-resistant construction, compared to the RNF14FTC30R1 which specifies only flame retardant coating. This provides enhanced environmental protection in humid or corrosive environments.