RNF14FTD953R Equivalent & Substitute Parts

Part Overview

The RNF14FTD953R is a 953 Ohm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is actively produced and widely used in general-purpose electronic applications requiring precision resistive elements with flame retardant coating and safety features. Substitute parts may be required due to inventory constraints, design upgrades for improved tolerance specifications, or power rating requirements in specific circuit applications.

Substiute Parts

RNF14FTD953R

Stackpole Electronics IncIn Stock: 3940RNF14FTD953R Datasheet

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RNF14BTE953R

Stackpole Electronics IncIn Stock: 2583RNF14BTE953R Datasheet

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CMF55953R00FHEB

Vishay DaleIn Stock: 2109CMF55953R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTD953R is determined by the following critical parameters:

• Resistance Value: Must be 953 Ohms (exact match required)
• Composition: Must be metal film construction
• Package Type: Must be axial through-hole configuration
• Tolerance: ±1% or better (tighter tolerance acceptable)
• Power Rating: Minimum 0.25W (higher ratings acceptable for thermal margin)
• Operating Temperature: Must support -55°C ~ 155°C minimum range
• Compliance: ROHS3 compliant, REACH unaffected status required

Two substitute parts meet these criteria with varying performance enhancements and power capabilities.

Parameter Comparison

Engineering Selection Recommendations

RNF14BTE953R (Stackpole Electronics Inc) serves as a direct form-fit-function upgrade with identical physical dimensions and power rating. This substitute provides improved tolerance specification (±0.1% versus ±1%) and superior temperature coefficient stability (±25ppm/°C versus ±100ppm/°C), making it suitable for precision analog circuits requiring tighter resistance accuracy. Both parts maintain identical operating temperature range and ROHS3 compliance.

CMF55953R00FHEB (Vishay Dale) provides increased power dissipation capability (0.5W versus 0.25W) with extended operating temperature range to 175°C. Physical dimensions are slightly reduced, and moisture resistance is added as an additional feature. This substitute is appropriate for applications requiring higher thermal margin or operation in moisture-prone environments. ROHS3 compliance and REACH unaffected status are maintained.

All three parts are actively produced with current inventory availability and meet regulatory compliance requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can RNF14BTE953R replace RNF14FTD953R in any application?

A: Yes. RNF14BTE953R is a direct substitute with identical physical dimensions (0.093" Dia x 0.250" L), same power rating (0.25W), and identical operating temperature range (-55°C ~ 155°C). The improved tolerance (±0.1% versus ±1%) and lower temperature coefficient (±25ppm/°C versus ±100ppm/°C) make it suitable for all applications requiring the original part, with enhanced performance in precision circuits.

Q: Is CMF55953R00FHEB physically compatible with RNF14FTD953R?

A: CMF55953R00FHEB has slightly smaller physical dimensions (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L). While the axial package type is identical and PCB hole spacing remains compatible, the reduced component length may affect mechanical fit in space-constrained layouts. Verify board layout clearances before substitution.

Q: What is the primary advantage of CMF55953R00FHEB over the original part?

A: CMF55953R00FHEB provides doubled power dissipation capability (0.5W versus 0.25W), extended maximum operating temperature (175°C versus 155°C), and added moisture resistance. These features are beneficial in high-power applications or environments with elevated temperature or humidity exposure.

Q: Are all three parts ROHS3 compliant?

A: Yes. RNF14FTD953R, RNF14BTE953R, and CMF55953R00FHEB are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Can I use a substitute part with different tolerance in a precision measurement circuit?

A: Tolerance selection depends on circuit requirements. RNF14BTE953R (±0.1%) is appropriate for precision analog applications. RNF14FTD953R and CMF55953R00FHEB (both ±1%) are suitable for general-purpose applications where ±1% accuracy is acceptable. Verify circuit tolerance stack-up analysis before final selection.