RC3225F5492CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F5492CS is a 54.9 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope. The primary substitute ERJ-14NF5492U from Panasonic Electronic Components carries identical resistance and tolerance values with higher power rating capability, though it is designated as Not For New Designs.

Substiute Parts

RC3225F5492CS

Samsung Electro-MechanicsIn Stock: 1124RC3225F5492CS Datasheet

Current PartRFQ

ERJ-14NF5492U

Panasonic Electronic ComponentsIn Stock: 8903ERJ-14NF5492U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F5492CS is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Resistance value: 54.9 kOhms
• Tolerance: ±1%
• Package footprint: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2
• RoHS3 compliance status

Allowable Variation:

• Power rating may exceed the original specification (0.333W minimum requirement)
• Physical dimensions may vary within the 1210 package standard
• Packaging format (Tape & Reel vs. bulk) does not affect electrical substitution
• Product status designation does not prevent functional substitution

The ERJ-14NF5492U meets all critical matching parameters with a higher power rating of 0.5W (1/2W), making it electrically and mechanically compatible for direct substitution in applications where the original power specification is not exceeded.

Parameter Comparison

Engineering Selection Recommendations

RC3225F5492CS Selection Criteria:

• Active product status supports new design implementation
• Preferred for applications requiring Samsung Electro-Mechanics supply chain qualification
• 0.333W power rating appropriate for standard signal conditioning and biasing circuits
• Unlimited MSL rating eliminates moisture sensitivity handling requirements

ERJ-14NF5492U Selection Criteria:

• Designated as Not For New Designs; suitable only for legacy system maintenance and repair
• Higher 0.5W power rating provides thermal margin in power-dissipative applications
• AEC-Q200 automotive qualification available if automotive-grade component traceability is required
• Panasonic supply chain preferred when Samsung allocation is unavailable

Substitution Applicability: The ERJ-14NF5492U functions as a direct electrical and mechanical substitute for the RC3225F5492CS in existing circuit designs. The higher power rating does not create incompatibility; it represents increased thermal capability. Both components maintain identical resistance, tolerance, temperature coefficient, and operating range specifications. Physical dimensions remain within 1210 package standard tolerances.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF5492U replace RC3225F5492CS in production assemblies?

A: Yes. Both components share identical electrical specifications (54.9 kOhms ±1%, ±100ppm/°C, -55°C ~ 155°C operating range) and mechanical compatibility (1210 package, 2 terminations). The higher power rating of ERJ-14NF5492U (0.5W vs. 0.333W) does not create functional incompatibility. However, ERJ-14NF5492U carries Not For New Designs status, restricting its use to legacy system support.

Q: What is the significance of the power rating difference?

A: The RC3225F5492CS is rated at 0.333W (1/3W), while ERJ-14NF5492U is rated at 0.5W (1/2W). This difference reflects thermal dissipation capability. A higher-rated component can safely operate in applications requiring the lower power specification. The substitute does not reduce power handling capacity; it increases it. Circuit design power calculations remain unchanged.

Q: Are physical dimensions identical between these parts?

A: Dimensions are compatible within 1210 package tolerances. RC3225F5492CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with 0.026" maximum seated height. ERJ-14NF5492U measures 0.126" L x 0.098" W (3.20mm x 2.50mm) with 0.028" maximum seated height. These variations fall within standard 1210 package specifications and do not affect PCB layout or assembly processes.

Q: Do compliance certifications differ between these parts?

A: Both components are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification. ERJ-14NF5492U includes AEC-Q200 automotive qualification, which RC3225F5492CS does not specify. This additional certification does not prevent substitution; it indicates broader application qualification for the Panasonic component.

Q: What packaging formats are available?

A: RC3225F5492CS is supplied in standard packaging format. ERJ-14NF5492U is supplied in Tape & Reel (TR) format. Packaging format does not affect electrical or mechanical compatibility; it reflects supply chain and assembly process preferences. Both formats contain identical components.

Q: Is moisture sensitivity a consideration for substitution?

A: No. Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity handling requirements. Storage, handling, and assembly processes are identical for both parts.