RNF14FAC33K2 Equivalent & Substitute Parts

Part Overview

The RNF14FAC33K2 is a 33.2 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance in compact form factors. The part is currently active in production with 636 units in stock. Substitute parts are identified to provide alternative sourcing options with equivalent or enhanced electrical and mechanical characteristics while maintaining compatibility with the original design specifications.

Substiute Parts

RNF14FAC33K2

Stackpole Electronics IncIn Stock: 710RNF14FAC33K2 Datasheet

Current PartRFQ

CMF5533K200BEEK

Vishay DaleIn Stock: 937CMF5533K200BEEK Datasheet

UpgradeRFQ

CMF5533K200FHEB

Vishay DaleIn Stock: 2268CMF5533K200FHEB Datasheet

UpgradeRFQ

CMF5033K200FHEB

Vishay DaleIn Stock: 1999CMF5033K200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAC33K2 are qualified based on the following criteria:

Electrical Compatibility: All substitute parts maintain the identical resistance value of 33.2 kOhms. Tolerance variations (±0.1% to ±1%) are acceptable as they represent equal or tighter specifications than the original ±1% tolerance.

Mechanical Compatibility: All substitutes use axial package construction with two terminations, ensuring direct pin-for-pin compatibility in through-hole applications.

Power Rating Consideration: Substitute parts are grouped by power rating. Parts with equal or higher power ratings (0.5W vs. 0.25W) are electrically and thermally compatible, as they can safely dissipate the same or greater power levels without exceeding design limits.

Material & Safety Features: All substitutes employ metal film composition with flame retardant coating and safety construction, matching the original part's material specifications.

Environmental Compliance: All parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

CMF5033K200FHEB (Manufacturer Recommended): This part is designated as the manufacturer-recommended substitute. It maintains identical power rating (0.25W) and tolerance (±1%) to the original RNF14FAC33K2, with extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C). The CMF5033K200FHEB adds moisture resistance and maintains full ROHS3 compliance. This option provides direct functional equivalence with enhanced environmental protection.

CMF5533K200FHEB (Upgrade Option): This substitute increases power rating to 0.5W while maintaining ±1% tolerance and identical resistance value. The higher power rating provides thermal margin in applications with variable load conditions. Extended temperature range and moisture resistance are included. This option is suitable for designs requiring enhanced thermal performance without tolerance modification.

CMF5533K200BEEK (Upgrade Option): This substitute combines 0.5W power rating with tighter ±0.1% tolerance and improved temperature coefficient (±25ppm/°C vs. ±50ppm/°C). Extended operating temperature range and moisture resistance are provided. This option is appropriate for precision applications where tighter tolerance and lower temperature drift are design requirements.

All substitutes maintain axial package compatibility and ROHS3 compliance, ensuring regulatory and mechanical interchangeability.

Frequently Asked Questions (FAQ)

Q: Can CMF5533K200FHEB replace RNF14FAC33K2 in a 0.25W circuit? A: Yes. The CMF5533K200FHEB is rated for 0.5W, which exceeds the 0.25W requirement. Higher power-rated components are electrically compatible in lower-power applications and provide thermal margin.

Q: What is the difference between CMF5533K200FHEB and CMF5533K200BEEK? A: Both parts share identical resistance (33.2 kOhms), power rating (0.5W), and package type (axial). The primary differences are tolerance (±1% vs. ±0.1%) and temperature coefficient (±50ppm/°C vs. ±25ppm/°C). CMF5533K200BEEK provides tighter tolerance and lower temperature drift for precision applications.

Q: Are all substitute parts physically compatible with the original footprint? A: All substitutes use axial package construction with two terminations. Physical dimensions vary slightly (see parameter comparison table), but all are compatible with standard through-hole axial resistor footprints. Verify PCB layout clearances for specific applications.

Q: Do substitute parts maintain the same safety and compliance certifications? A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status. All include flame retardant coating and safety construction.

Q: Which substitute should be selected for maximum availability? A: CMF5533K200FHEB offers the highest inventory (2240 units in stock), followed by CMF5033K200FHEB (1976 units) and CMF5533K200BEEK (831 units).