RNF12FAD150K Equivalent & Substitute Parts

Part Overview

The RNF12FAD150K is a 150 kOhms ±1% metal film axial through-hole resistor rated at 0.5W (1/2W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction, designed for applications requiring precision resistance values with stable performance across industrial temperature ranges. The part is currently active in production with 678 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives meeting identical electrical and mechanical parameters.

Substiute Parts

RNF12FAD150K

Stackpole Electronics IncIn Stock: 714RNF12FAD150K Datasheet

Current PartRFQ

CMF55150K00FKEK

Vishay DaleIn Stock: 884CMF55150K00FKEK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FAD150K is determined by strict equivalence across the following parameters:

• Resistance value: 150 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The CMF55150K00FKEK manufactured by Vishay Dale meets all electrical and mechanical substitution criteria. Both parts share identical resistance, tolerance, power rating, composition, and compliance certifications. Physical dimensions differ slightly (CMF55 is more compact), but both maintain axial package compatibility for standard through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

The CMF55150K00FKEK is a direct electrical equivalent to the RNF12FAD150K. Both components satisfy ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The CMF55 variant offers an extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and includes moisture-resistant properties, providing enhanced environmental protection in humid or corrosive conditions.

Physical dimension differences must be evaluated against PCB layout constraints. The CMF55 is more compact, which may facilitate space-constrained designs or allow for improved thermal management in high-density assemblies. Standard through-hole mounting compatibility is maintained for both variants.

The CMF55150K00FKEK is currently discontinued at DiGi Electronics; availability should be confirmed through alternative authorized distributors before design implementation.

Frequently Asked Questions (FAQ)

Q: Can the CMF55150K00FKEK replace the RNF12FAD150K in existing designs?

A: Yes. Both components share identical electrical specifications (150 kOhms ±1%, 0.5W, metal film, ±100ppm/°C). Physical dimensions differ, but axial package compatibility is maintained for standard through-hole PCB applications. Verify PCB layout clearances before substitution.

Q: What is the difference in operating temperature range between these parts?

A: The RNF12FAD150K operates from -55°C to 155°C, while the CMF55150K00FKEK extends to 175°C. For applications within the RNF12FAD150K range, both parts perform identically. The CMF55 provides additional margin for high-temperature environments.

Q: Are both parts RoHS compliant?

A: Yes. Both the RNF12FAD150K and CMF55150K00FKEK are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Does the CMF55 moisture-resistant feature affect substitution compatibility?

A: No. Moisture resistance is an additional feature that does not impact electrical performance or substitution eligibility. It provides enhanced reliability in humid or corrosive environments without affecting circuit behavior.

Q: What should I consider regarding the physical size difference?

A: The CMF55 is more compact (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L). Verify that PCB footprint spacing and component clearances accommodate the smaller dimensions. Both maintain standard axial lead spacing for through-hole mounting.

Q: Is the CMF55150K00FKEK currently available?

A: The CMF55150K00FKEK is discontinued at DiGi Electronics. Availability must be confirmed through alternative authorized distributors before design commitment.