RNF12FTC150R Equivalent & Substitute Parts

Part Overview

The RNF12FTC150R is a 150 Ohm ±1% 0.5W 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 axial packages. The part maintains Active product status with 997 units in current inventory. Substitute parts are identified to address packaging format availability, extended operating temperature ranges, or inventory optimization across equivalent electrical specifications.

Substiute Parts

RNF12FTC150R

Stackpole Electronics IncIn Stock: 1090RNF12FTC150R Datasheet

Current PartRFQ

CMF55150R00FHEB

Vishay DaleIn Stock: 5738CMF55150R00FHEB Datasheet

MFR RecommendedRFQ

CMF55150R00FHEK

Vishay DaleIn Stock: 1179CMF55150R00FHEK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC150R are qualified based on the following electrical and mechanical parameters:

• Resistance value: 150 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (minimum requirement)

The identified substitutes CMF55150R00FHEB and CMF55150R00FHEK, both manufactured by Vishay Dale, meet all core electrical specifications. Differences exist in packaging format (Cut Tape vs. Bulk), physical dimensions (smaller profile), maximum operating temperature (175°C vs. 155°C), and moisture resistance features. These variations do not affect electrical equivalency for applications within the RNF12FTC150R operating range.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance, qualifying them for equivalent circuit applications. The RNF12FTC150R and both CMF55 variants are electrically interchangeable within the -55°C to 155°C operating window.

Selection between parts should be based on:

• Packaging requirements: RNF12FTC150R is supplied in Tape & Reel format; CMF55150R00FHEB is supplied in Cut Tape; CMF55150R00FHEK is supplied in Bulk
• Physical space constraints: CMF55 variants feature reduced physical dimensions (2.29mm x 6.10mm vs. 2.75mm x 8.75mm), enabling use in compact layouts
• Environmental exposure: CMF55 variants include moisture-resistant features, providing enhanced protection in humid environments
• Temperature margin: CMF55 variants support operation to 175°C, providing 20°C additional margin above the RNF12FTC150R specification

Frequently Asked Questions (FAQ)

Q: Can CMF55150R00FHEB and CMF55150R00FHEK be used interchangeably with RNF12FTC150R?

A: Yes. Both CMF55 variants meet all core electrical specifications: 150 Ohm resistance, ±1% tolerance, 0.5W power rating, metal film composition, and ±50ppm/°C temperature coefficient. Electrical performance is equivalent within the RNF12FTC150R operating range of -55°C to 155°C.

Q: What are the physical differences between these parts?

A: The RNF12FTC150R measures 0.108" diameter x 0.344" length (2.75mm x 8.75mm). Both CMF55 variants measure 0.090" diameter x 0.240" length (2.29mm x 6.10mm), resulting in a smaller axial profile suitable for space-constrained applications.

Q: How do packaging formats differ?

A: RNF12FTC150R is supplied in Tape & Reel (TR) format for automated assembly. CMF55150R00FHEB is supplied in Cut Tape (CT) format for semi-automated or manual placement. CMF55150R00FHEK is supplied in Bulk format for manual assembly or sorting operations.

Q: What is the significance of the extended operating temperature range in CMF55 variants?

A: CMF55 variants support -55°C to 175°C operation, compared to -55°C to 155°C for the RNF12FTC150R. This 20°C additional margin provides design flexibility for applications with elevated ambient or self-heating conditions, though both parts function identically within the RNF12FTC150R temperature specification.

Q: Are moisture-resistant features required for substitution?

A: No. Moisture resistance is an additional feature in CMF55 variants but is not required for electrical equivalency. Selection should be based on application environment and reliability requirements.

Q: Do all parts meet the same compliance standards?

A: Yes. RNF12FTC150R, CMF55150R00FHEB, and CMF55150R00FHEK are all ROHS3 Compliant and REACH Unaffected (with the exception of CMF55150R00FHEK, which is REACH Affected). All parts carry EAR99 ECCN classification and 8533.21.0090 HTSUS code.