RNF12FTC453K Equivalent & Substitute Parts

Part Overview

The RNF12FTC453K is a 453 kOhms ±1% 0.5W through-hole resistor manufactured by Stackpole Electronics Inc. This metal film axial resistor features flame retardant coating and safety characteristics, designed for applications requiring precision resistance values in compact form factors. The part maintains Active product status with ROHS3 compliance and is suitable for general-purpose electronic circuit applications. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.

Substiute Parts

RNF12FTC453K

Stackpole Electronics IncIn Stock: 1078RNF12FTC453K Datasheet

Current PartRFQ

CMF55453K00FHEB

Vishay DaleIn Stock: 2963CMF55453K00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC453K is determined by strict equivalence across the following critical parameters:

• Resistance value: 453 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: ±50ppm/°C (exact match required)
• Compliance: ROHS3 Compliant (minimum requirement)

The CMF55453K00FHEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications and axial package configuration. Mechanical dimensions differ slightly, but both maintain standard axial form factor compatibility with typical PCB layouts designed for 1/2W axial resistors.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC453K and CMF55453K00FHEB maintain Active product status with full ROHS3 compliance and REACH unaffected certification. Selection between these parts should be based on:

Stackpole RNF12FTC453K: Select when original equipment specifications explicitly require Stackpole components or when the larger axial form factor (0.108" diameter) is preferred for mechanical clearance or thermal dissipation considerations.

Vishay Dale CMF55453K00FHEB: Select as a direct substitute when component availability is a priority. This part offers identical electrical performance with an extended operating temperature range (-55°C to 175°C versus -155°C to 155°C) and additional moisture resistance features. The compact form factor (0.090" diameter) may provide space advantages in dense PCB layouts.

Both parts carry equivalent regulatory compliance and are suitable for direct substitution in applications where the specified electrical parameters are the primary selection criteria.

Frequently Asked Questions (FAQ)

Q: Can CMF55453K00FHEB replace RNF12FTC453K in all applications?

A: Yes, when electrical specifications are the primary design requirement. Both parts deliver identical resistance (453 kOhms), tolerance (±1%), power rating (0.5W), and temperature coefficient (±50ppm/°C). The CMF55453K00FHEB operates across a wider temperature range (-55°C to 175°C) and includes moisture resistance, making it suitable for equivalent or more demanding environments.

Q: What are the physical dimension differences?

A: The RNF12FTC453K measures 0.108" diameter x 0.344" length. The CMF55453K00FHEB measures 0.090" diameter x 0.240" length. Both maintain standard axial through-hole package compatibility. Verify PCB layout clearances if space constraints exist.

Q: Are both parts RoHS compliant?

A: Yes. Both the RNF12FTC453K and CMF55453K00FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in packaging format?

A: The RNF12FTC453K is supplied in Tape & Reel (TR) format. The CMF55453K00FHEB is supplied in Cut Tape (CT) format. Both formats are standard for through-hole resistor distribution and do not affect component performance or compatibility.

Q: Which part should I select for high-moisture environments?

A: The CMF55453K00FHEB includes moisture-resistant features in addition to flame retardant coating. For applications with elevated humidity or moisture exposure, this part provides enhanced protection while maintaining all electrical equivalence to the RNF12FTC453K.