RNF14FTD2K20 Equivalent & Substitute Parts

Part Overview

The RNF14FTD2K20 is a 2.2 kOhms ±1% 0.25W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor 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 849 units in stock. Substitute parts are identified to address packaging format preferences, inventory availability, or performance envelope requirements while maintaining core electrical specifications.

Substiute Parts

RNF14FTD2K20

Stackpole Electronics IncIn Stock: 937RNF14FTD2K20 Datasheet

Current PartRFQ

RNMF14FAD2K20

Stackpole Electronics IncIn Stock: 20001RNMF14FAD2K20 Datasheet

MFR RecommendedRFQ

CMF552K2000FHEB

Vishay DaleIn Stock: 5434CMF552K2000FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTD2K20 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Resistance value: 2.2 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial Through-Hole (exact match required)
• RoHS Compliance: ROHS3 Compliant (maintained)

Secondary Considerations:

• Power rating: Equal to or greater than 0.25W
• Temperature coefficient: Equal to or lower absolute value
• Operating temperature range: Equal to or exceeding -55°C to 155°C
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) variants

Two substitute parts meet these criteria: RNMF14FAD2K20 (manufacturer-recommended direct substitute) and CMF552K2000FHEB (upgrade option with enhanced performance envelope).

Parameter Comparison

Engineering Selection Recommendations

RNMF14FAD2K20 (Manufacturer-Recommended Substitute): This part is the direct equivalent from Stackpole Electronics Inc, classified as the RNMF (Mini) series variant. It maintains identical electrical specifications (2.2 kOhms ±1%, 0.25W, ±100ppm/°C) and operating temperature range (-55°C to 155°C). The primary difference is physical size reduction (0.070" Dia x 0.130" L versus 0.093" Dia x 0.250" L) and packaging format change from Tape & Reel to Cut Tape. This substitute is appropriate for space-constrained applications or when Cut Tape packaging is preferred. ROHS3 compliance is maintained.

CMF552K2000FHEB (Upgrade Option): This Vishay Dale CMF series resistor provides enhanced performance specifications while maintaining core electrical compatibility. The 0.5W power rating (double the original 0.25W) accommodates higher dissipation requirements. The temperature coefficient is improved to ±50ppm/°C (versus ±100ppm/°C), and the operating temperature range extends to 175°C (versus 155°C). Physical dimensions are comparable to the original part (0.090" Dia x 0.240" L). This upgrade is suitable for applications requiring improved thermal stability or higher power dissipation margins. ROHS3 compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can RNMF14FAD2K20 be used as a direct replacement for RNF14FTD2K20?

A: Yes. Both parts share identical electrical specifications: 2.2 kOhms ±1% resistance, 0.25W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The RNMF14FAD2K20 is physically smaller and supplied in Cut Tape format rather than Tape & Reel. Verify PCB layout compatibility with the reduced dimensions (0.070" Dia x 0.130" L) before substitution.

Q: What are the advantages of using CMF552K2000FHEB?

A: The CMF552K2000FHEB offers three performance enhancements: doubled power rating (0.5W versus 0.25W), improved temperature coefficient (±50ppm/°C versus ±100ppm/°C), and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). These improvements provide greater thermal stability and power dissipation capability. Physical dimensions remain compatible with standard axial resistor footprints.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RNF14FTD2K20, RNMF14FAD2K20, and CMF552K2000FHEB are all ROHS3 compliant. REACH status is unaffected for all three parts.

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

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for automated assembly processes. Cut Tape (CT) packaging supplies components on cut segments of carrier tape, typically for manual assembly or smaller quantity requirements. Both formats contain the same component; packaging selection depends on assembly methodology and order quantity.

Q: Can CMF552K2000FHEB be used in applications designed for 0.25W resistors?

A: Yes. The higher power rating (0.5W) is backward compatible with 0.25W applications. The component will operate at lower stress levels, improving reliability margins. Verify that physical dimensions (0.090" Dia x 0.240" L) fit the PCB layout, as they differ slightly from the original part.

Q: What inventory levels are available for each part?

A: RNF14FTD2K20 has 849 units in stock. RNMF14FAD2K20 has 19954 units available. CMF552K2000FHEB has 5392 units in stock. Inventory levels support immediate procurement for all three options.