RNF12FTC511K Equivalent & Substitute Parts

Part Overview

The RNF12FTC511K is a 511 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 full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory certifications align with the original component requirements.

Substiute Parts

RNF12FTC511K

Stackpole Electronics IncIn Stock: 920RNF12FTC511K Datasheet

Current PartRFQ

CMF55511K00FHEB

Vishay DaleIn Stock: 4455CMF55511K00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC511K is determined by the following critical parameters:

• Resistance value: 511 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W minimum (equal or higher acceptable)
• Composition: Metal Film (required for performance characteristics)
• Package: Axial through-hole (mechanical compatibility)
• Temperature coefficient: ±50ppm/°C (stability requirement)
• Operating temperature range: Minimum -55°C ~ 155°C (or extended range acceptable)
• RoHS3 compliance: Required for regulatory alignment

The CMF55511K00FHEB from Vishay Dale meets all substitution criteria with identical electrical specifications and enhanced operating temperature range (-55°C ~ 175°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC511K and CMF55511K00FHEB are Active status components with full RoHS3 compliance and REACH unaffected certification. Selection between these parts should be based on:

• Packaging format: RNF12FTC511K is supplied in Tape & Reel (TR) format; CMF55511K00FHEB is supplied in Cut Tape (CT) format
• Physical dimensions: RNF12FTC511K measures 0.108" Dia x 0.344" L; CMF55511K00FHEB measures 0.090" Dia x 0.240" L (smaller profile)
• Temperature margin: CMF55511K00FHEB provides extended operating range to 175°C versus 155°C for RNF12FTC511K
• Inventory availability: CMF55511K00FHEB currently has higher stock levels (4384 Pcs vs 888 Pcs)

Both components satisfy identical electrical and regulatory requirements for direct substitution in applications requiring 511 kOhms ±1% metal film axial resistors.

Frequently Asked Questions (FAQ)

Q: Can CMF55511K00FHEB replace RNF12FTC511K in all applications?

A: Yes, provided the physical dimensions and packaging format are compatible with your assembly process. The CMF55511K00FHEB has a smaller axial profile (0.090" Dia x 0.240" L vs 0.108" Dia x 0.344" L) and may require PCB layout verification for tight spacing applications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous reels for automated pick-and-place assembly. Cut Tape (CT) packaging is supplied in strips cut to specific lengths for manual or semi-automated assembly. Both formats contain identical components.

Q: Are there any thermal performance differences between these parts?

A: Both parts have identical temperature coefficients (±50ppm/°C) and power ratings (0.5W). The CMF55511K00FHEB operates to 175°C maximum versus 155°C for the RNF12FTC511K, providing additional thermal margin in high-temperature environments.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both RNF12FTC511K and CMF55511K00FHEB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes (8533.21.0090).

Q: What tolerance should I expect from either part?

A: Both parts are specified at ±1% tolerance, ensuring equivalent precision for circuit design calculations and performance specifications.