RNF14BTC249R Equivalent & Substitute Parts

Part Overview

The RNF14BTC249R is a 249 Ohm metal film through-hole resistor manufactured by Stackpole Electronics Inc. This 0.25W axial component features ±0.1% tolerance and flame retardant coating, designed for precision applications requiring stable resistance values across extended temperature ranges. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific performance requirements where the original part may be unavailable or where enhanced specifications are beneficial.

Substiute Parts

RNF14BTC249R

Stackpole Electronics IncIn Stock: 1098RNF14BTC249R Datasheet

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CPF1249R00BEEE6

Vishay DaleIn Stock: 2437CPF1249R00BEEE6 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14BTC249R is determined by the following critical parameters:

Mandatory Matching Criteria:

• Resistance value: 249 Ohms (exact match required)
• Tolerance: ±0.1% (precision specification)
• Composition: Metal Film (electrical performance characteristics)
• Package: Axial (mechanical and thermal interface)
• Compliance: RoHS3 and REACH status

Allowable Variation Parameters:

• Power rating: Equal to or greater than 0.25W
• Temperature coefficient: Equal to or lower absolute value (tighter stability acceptable)
• Operating temperature range: Equal to or exceeding -55°C to 155°C
• Physical dimensions: Minor variations acceptable within axial package constraints
• Packaging format: Tape & Reel or Cut Tape formats both acceptable for equivalent functionality

The CPF1249R00BEEE6 qualifies as a substitute based on matching resistance, tolerance, composition, and package type, while offering enhanced power rating (1W vs 0.25W) and improved temperature stability (±25ppm/°C vs ±50ppm/°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14BTC249R and CPF1249R00BEEE6 maintain Active product status with full regulatory compliance. Selection between these parts depends on application-specific requirements:

The RNF14BTC249R is appropriate for standard precision applications where the 0.25W power rating is sufficient and the ±50ppm/°C temperature coefficient meets stability requirements.

The CPF1249R00BEEE6 provides enhanced specifications suitable for applications requiring higher power dissipation capacity (1W rating) or superior temperature stability (±25ppm/°C). The extended operating temperature range (-65°C to 230°C) accommodates more demanding thermal environments. Both parts maintain identical resistance and tolerance specifications, ensuring functional equivalence in precision-critical circuits.

Frequently Asked Questions (FAQ)

Q: Can CPF1249R00BEEE6 be used as a direct replacement for RNF14BTC249R?

A: Yes. Both parts share identical resistance (249 Ohms), tolerance (±0.1%), composition (metal film), and axial package configuration. The substitute offers equal or superior performance across all critical parameters.

Q: What is the significance of the different power ratings (0.25W vs 1W)?

A: Power rating indicates maximum continuous power dissipation. The CPF1249R00BEEE6 (1W) can safely dissipate higher power levels than the RNF14BTC249R (0.25W). In applications where the original 0.25W rating is adequate, the 1W substitute remains fully compatible and provides additional thermal margin.

Q: How do temperature coefficients affect substitution?

A: Temperature coefficient (±50ppm/°C vs ±25ppm/°C) defines resistance drift over temperature. The CPF1249R00BEEE6 exhibits tighter tolerance to temperature changes, providing superior stability. This represents an improvement over the original specification and does not compromise compatibility.

Q: Are there packaging format differences between these parts?

A: The RNF14BTC249R is supplied in Tape & Reel format, while CPF1249R00BEEE6 is supplied in Cut Tape format. Both formats contain identical axial components; packaging format selection depends on assembly process requirements and inventory management practices.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected, meeting identical environmental and safety standards.