PRNF14FTD2K21 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD2K21 is a 2.21 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) with axial leads, manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, operating across -55°C to 155°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements permit tolerance relaxation, power rating increases, or packaging format changes while maintaining core electrical functionality.

Substiute Parts

PRNF14FTD2K21

Stackpole Electronics IncIn Stock: 935PRNF14FTD2K21 Datasheet

Current PartRFQ

RNF14FAD2K21

Stackpole Electronics IncIn Stock: 904RNF14FAD2K21 Datasheet

DirectRFQ

RNF14FTD2K21

Stackpole Electronics IncIn Stock: 54848RNF14FTD2K21 Datasheet

DirectRFQ

CMF552K2100DHR6

Vishay DaleIn Stock: 1886CMF552K2100DHR6 Datasheet

UpgradeRFQ

CMF552K2100FHEB

Vishay DaleIn Stock: 15758CMF552K2100FHEB Datasheet

UpgradeRFQ

CPF12K2100FKEE6

Vishay DaleIn Stock: 2099CPF12K2100FKEE6 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on allowed parameter variations:

Direct Equivalents maintain identical electrical specifications (2.21 kOhms, ±1%, 0.25W) with variations only in packaging format (Tape & Reel vs. Cut Tape vs. Tape & Box). These parts are interchangeable in all applications where the original part is specified.

Upgrade Substitutes increase one or more electrical parameters while maintaining the 2.21 kOhms resistance value. Upgrades include higher power ratings (0.5W or 1W), improved tolerance (±0.5%), lower temperature coefficient (±50ppm/°C), or extended operating temperature ranges. These substitutes are applicable only when the design permits relaxed requirements or when enhanced performance is beneficial.

Key parameters determining substitution eligibility:

• Resistance value (must remain 2.21 kOhms)
• Tolerance (±1% or better)
• Power rating (0.25W minimum)
• Package type (Axial)
• Composition (Metal Film)

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection (RNF14FAD2K21, RNF14FTD2K21): Both Stackpole RNF series parts maintain identical electrical and thermal specifications as PRNF14FTD2K21. Selection between these direct equivalents depends solely on packaging requirements: RNF14FAD2K21 is supplied in Tape & Box format, while RNF14FTD2K21 is supplied in Cut Tape format. Both are ROHS3 compliant and Active status.

Upgrade Substitute Selection (CMF552K2100FHEB): This Vishay Dale CMF series part provides enhanced performance with doubled power rating (0.5W vs. 0.25W), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), and extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C). Tolerance remains ±1%. This part is ROHS3 compliant and suitable for applications where higher power dissipation capability or improved stability is required.

Upgrade Substitute Selection (CMF552K2100DHR6): This Vishay Dale CMF series part offers the highest tolerance specification (±0.5%) with doubled power rating (0.5W) and extended temperature range. However, this part is RoHS non-compliant and REACH affected, limiting applicability in regulated environments. Selection is restricted to applications where RoHS compliance is not mandated.

Upgrade Substitute Selection (CPF12K2100FKEE6): This Vishay Dale CPF series part provides maximum power rating (1W) and widest operating temperature range (-65°C to 230°C). Temperature coefficient matches the original (±100ppm/°C). This part is ROHS3 compliant and suitable for high-power or extreme-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can RNF14FAD2K21 replace PRNF14FTD2K21 in production? A: Yes. Both parts are direct equivalents with identical electrical specifications. The only difference is packaging format (Tape & Box vs. Cut Tape). Selection depends on assembly equipment compatibility and supply chain requirements.

Q: What is the difference between direct equivalents and upgrade substitutes? A: Direct equivalents maintain all electrical parameters unchanged. Upgrade substitutes increase one or more parameters (power rating, tolerance, temperature range) while preserving the 2.21 kOhms resistance value. Upgrades are applicable only when design requirements permit relaxed specifications.

Q: Can CMF552K2100FHEB be used in place of PRNF14FTD2K21? A: Yes, when design requirements permit. The CMF552K2100FHEB provides superior performance with doubled power rating, improved temperature coefficient, and extended operating range. All electrical parameters remain compatible. Both are ROHS3 compliant.

Q: Why is CMF552K2100DHR6 marked as RoHS non-compliant? A: CMF552K2100DHR6 is RoHS non-compliant and REACH affected. This part is restricted to applications where regulatory compliance is not required. For regulated environments, use ROHS3 compliant alternatives.

Q: Is CPF12K2100FKEE6 suitable for high-temperature applications? A: Yes. CPF12K2100FKEE6 operates across -65°C to 230°C, providing the widest temperature range among all listed substitutes. This part is suitable for extreme-temperature environments where PRNF14FTD2K21 (-55°C to 155°C) is insufficient.

Q: Do all substitute parts use the same axial package format? A: Yes. All listed parts use axial through-hole package format with 2 terminations. Physical dimensions vary slightly between manufacturers but remain compatible with standard axial component assembly processes.

Q: What tolerance specifications are available? A: PRNF14FTD2K21 and most substitutes maintain ±1% tolerance. CMF552K2100DHR6 offers improved ±0.5% tolerance for applications requiring tighter resistance accuracy.