RNF12FTC3K92 Equivalent & Substitute Parts

Part Overview

The RNF12FTC3K92 is a 3.92 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 construction, designed for applications requiring precision resistance values with stable performance across industrial temperature ranges. The part maintains Active product status with 910 units in current inventory. Substitute parts are identified to provide design flexibility, alternative sourcing options, and compatibility with varying packaging and procurement requirements.

Substiute Parts

RNF12FTC3K92

Stackpole Electronics IncIn Stock: 928RNF12FTC3K92 Datasheet

Current PartRFQ

CMF553K9200FHEB

Vishay DaleIn Stock: 6867CMF553K9200FHEB Datasheet

MFR RecommendedRFQ

CMF553K9200FHEK

Vishay DaleIn Stock: 809CMF553K9200FHEK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC3K92 are qualified based on electrical and mechanical parameter equivalence. The following criteria determine substitutability:

Critical Matching Parameters:

• Resistance value: 3.92 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Metal Film
• Package: Axial through-hole
• Temperature coefficient: ±50ppm/°C
• RoHS compliance: ROHS3 Compliant

Acceptable Variations:

• Operating temperature range (substitute parts rated to -55°C to 175°C exceed minimum requirements)
• Physical dimensions (substitute parts use 0.090" Dia x 0.240" L vs. 0.108" Dia x 0.344" L; both are standard axial form factors)
• Packaging format (Tape & Reel, Cut Tape, or Bulk)
• Moisture resistance features (additional feature in substitutes)

The CMF55 series resistors from Vishay Dale meet all electrical specifications and are mechanically compatible as axial through-hole components.

Parameter Comparison

Engineering Selection Recommendations

CMF553K9200FHEB (Vishay Dale, Cut Tape): This substitute provides full electrical equivalence with extended operating temperature range to 175°C. ROHS3 compliance and REACH Unaffected status align with regulatory requirements. Cut Tape packaging offers flexibility for moderate-volume production runs. Moisture-resistant construction provides enhanced environmental protection compared to the main part.

CMF553K9200FHEK (Vishay Dale, Bulk): This substitute meets identical electrical specifications with equivalent temperature performance. ROHS3 compliance is maintained; however, REACH Affected status requires verification against specific application regulatory requirements. Bulk packaging is suitable for high-volume manufacturing or internal stock consolidation. Moisture-resistant features provide additional environmental durability.

Both substitutes are Active products with established supply availability. Selection between CMF553K9200FHEB and CMF553K9200FHEK depends on packaging requirements and REACH compliance obligations specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can CMF553K9200FHEB and CMF553K9200FHEK be used interchangeably with RNF12FTC3K92?

A: Yes. Both Vishay Dale parts are electrically and mechanically equivalent. They share identical resistance (3.92 kOhms), tolerance (±1%), power rating (0.5W), composition (metal film), and temperature coefficient (±50ppm/°C). The primary differences are packaging format (Cut Tape vs. Bulk) and REACH compliance status.

Q: What are the physical dimension differences?

A: RNF12FTC3K92 measures 0.108" Dia x 0.344" L (2.75mm x 8.75mm). Both CMF substitutes measure 0.090" Dia x 0.240" L (2.29mm x 6.10mm). Both are standard axial through-hole form factors and are mechanically compatible in typical PCB layouts. Verify clearance in space-constrained applications.

Q: Does the extended temperature range of the substitutes affect compatibility?

A: No. The substitute parts are rated to -55°C to 175°C, which exceeds the RNF12FTC3K92 specification of -55°C to 155°C. This provides additional thermal margin and does not compromise compatibility.

Q: What is the significance of the REACH Affected status for CMF553K9200FHEK?

A: REACH Affected indicates the part may contain substances subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. Verify compliance requirements for your specific application and end market before selecting this substitute.

Q: Are the moisture-resistant features of the CMF substitutes necessary?

A: The moisture-resistant construction in both CMF parts is an additional feature not present in the RNF12FTC3K92. It provides enhanced environmental protection but is not required for electrical equivalence. Selection depends on application environment and reliability requirements.

Q: Which substitute should I select for high-volume production?

A: CMF553K9200FHEK (Bulk packaging) is optimized for high-volume manufacturing. CMF553K9200FHEB (Cut Tape) is suitable for moderate-volume production and automated assembly processes.