RNF12FTC392K Equivalent & Substitute Parts

Part Overview

The RNF12FTC392K is a 392 kOhms ±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 892 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when procurement requirements necessitate alternative manufacturers or packaging formats.

Substiute Parts

RNF12FTC392K

Stackpole Electronics IncIn Stock: 926RNF12FTC392K Datasheet

Current PartRFQ

CMF55392K00FHEB

Vishay DaleIn Stock: 2516CMF55392K00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC392K are qualified based on the following electrical and mechanical parameters:

• Resistance value: 392 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 configuration: Axial through-hole (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Number of terminations: 2 (exact match required)
• Compliance: ROHS3 Compliant (minimum requirement)

The CMF55392K00FHEB from Vishay Dale qualifies as a direct substitute, meeting all critical electrical parameters and maintaining equivalent mechanical compatibility. Differences in physical dimensions and packaging format (Cut Tape vs. Tape & Reel) do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC392K and CMF55392K00FHEB are Active status components with ROHS3 compliance and REACH unaffected designation. The CMF55392K00FHEB provides an extended operating temperature range to 175°C compared to the primary part's 155°C maximum, offering additional thermal margin in high-temperature applications. The substitute part features moisture-resistant construction in addition to flame retardant coating. Physical dimension differences result in a more compact form factor for the Vishay Dale component. Selection between these parts should be based on packaging requirements (Tape & Reel vs. Cut Tape), inventory availability, and thermal operating conditions specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the CMF55392K00FHEB be used as a direct replacement for the RNF12FTC392K in circuit applications?

A: Yes. Both components share identical electrical specifications: 392 kOhms resistance, ±1% tolerance, 0.5W power rating, metal film composition, and ±50ppm/°C temperature coefficient. Axial package configuration ensures mechanical compatibility in through-hole PCB designs.

Q: What are the differences between these two parts?

A: The primary differences are packaging format (Tape & Reel vs. Cut Tape), physical dimensions (the Vishay Dale part is more compact), operating temperature range (175°C vs. 155°C maximum), and additional moisture-resistant features on the substitute part. Electrical performance is equivalent.

Q: Does the smaller physical size of the CMF55392K00FHEB affect PCB layout compatibility?

A: The reduced diameter and length of the Vishay Dale component may require PCB layout verification to confirm hole spacing and lead bend radius compatibility. Both parts maintain standard axial through-hole termination spacing suitable for conventional PCB designs.

Q: Are both parts suitable for high-reliability applications?

A: Both components are Active status products with ROHS3 compliance and equivalent safety construction (flame retardant coating). Selection for high-reliability applications should consider specific environmental and thermal requirements of the end application.

Q: What packaging considerations should be evaluated when switching between these parts?

A: The RNF12FTC392K is supplied in Tape & Reel format suitable for automated assembly, while the CMF55392K00FHEB is supplied in Cut Tape format. Procurement and assembly process compatibility with existing equipment and workflows should be confirmed before implementation.