RNF14FTC4M12 Equivalent & Substitute Parts

Part Overview

The RNF14FTC4M12 is a 4.12 MOhms ±1% metal film axial resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction, designed for through-hole applications requiring precision resistance values in high-reliability circuits. The part maintains Active product status with 1153 units in current inventory. Substitute parts are identified to address application requirements such as increased power dissipation capability or enhanced environmental performance while maintaining core electrical specifications.

Substiute Parts

RNF14FTC4M12

Stackpole Electronics IncIn Stock: 1184RNF14FTC4M12 Datasheet

Current PartRFQ

CMF554M1200FHEB

Vishay DaleIn Stock: 2236CMF554M1200FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC4M12 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.12 MOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package/Case: Axial
• Temperature Coefficient: ±50ppm/°C
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

Allowable Variation Parameters:

• Power Rating: May be equal or higher (0.25W minimum)
• Operating Temperature Range: May be equal or extended
• Physical Dimensions: Minor variations acceptable within axial package constraints
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable for component selection

The CMF554M1200FHEB qualifies as a direct substitute based on matching all mandatory parameters while providing enhanced power dissipation (0.5W vs. 0.25W) and extended upper operating temperature (-55°C ~ 175°C vs. -55°C ~ 155°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC4M12 and CMF554M1200FHEB maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection between these components is based on application thermal and power dissipation requirements:

The RNF14FTC4M12 is suitable for standard applications operating within -55°C to 155°C with power dissipation not exceeding 0.25W.

The CMF554M1200FHEB is appropriate for applications requiring higher power dissipation capability (0.5W) or extended upper operating temperature performance to 175°C. The addition of moisture-resistant features in the CMF554M1200FHEB provides enhanced environmental protection in humid or corrosive conditions.

Both components satisfy identical electrical specifications (4.12 MOhms ±1%, ±50ppm/°C temperature coefficient) and maintain equivalent reliability characteristics through metal film construction with flame retardant coating.

Frequently Asked Questions (FAQ)

Q: Can CMF554M1200FHEB replace RNF14FTC4M12 in existing designs?

A: Yes. The CMF554M1200FHEB provides identical electrical performance (4.12 MOhms ±1%) with enhanced power rating and temperature range. Physical dimensions are comparable within axial package specifications. No circuit redesign is required.

Q: What is the primary difference between these two resistors?

A: The CMF554M1200FHEB provides double the power dissipation rating (0.5W vs. 0.25W) and extends the maximum operating temperature from 155°C to 175°C. The CMF554M1200FHEB also includes moisture-resistant features.

Q: Are packaging formats interchangeable?

A: RNF14FTC4M12 is supplied in Tape & Reel (TR) format, while CMF554M1200FHEB is supplied in Cut Tape (CT) format. Both formats contain identical components; packaging format selection depends on assembly process requirements and inventory management practices.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components are ROHS3 Compliant and REACH Unaffected, meeting equivalent environmental and safety regulations.

Q: Which part should be selected for high-temperature applications?

A: The CMF554M1200FHEB is specified for operation to 175°C, compared to 155°C for the RNF14FTC4M12. For applications approaching or exceeding 155°C, the CMF554M1200FHEB is the appropriate selection.