RC3225F20R5CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F20R5CS is a 20.5 Ohm ±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 and is RoHS3 compliant with MSL Level 1 moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications (resistance value, tolerance, power rating, temperature coefficient, and operating temperature range) and mechanical compatibility (package type, termination count, and physical dimensions) align with the main part's functional requirements.

Substiute Parts

RC3225F20R5CS

Samsung Electro-MechanicsIn Stock: 1188RC3225F20R5CS Datasheet

Current PartRFQ

CRCW121020R5FKEA

Vishay DaleIn Stock: 4963CRCW121020R5FKEA Datasheet

SimilarRFQ

ERJ-14NF20R5U

Panasonic Electronic ComponentsIn Stock: 14227ERJ-14NF20R5U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F20R5CS is determined by the following mandatory parameters:

Electrical Compatibility:

• Resistance value: 20.5 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)

Mechanical Compatibility:

• Package type: 1210 (3225 Metric) (exact match required)
• Number of terminations: 2 (exact match required)
• Composition: Thick Film (exact match required)

Regulatory Compliance:

• RoHS3 compliance (required)
• MSL Level 1 (required)

The identified substitute parts meet all mandatory electrical and mechanical parameters. Power rating variations are permitted when the substitute part's power rating equals or exceeds the main part specification, as this represents a functional upgrade without compromising circuit performance.

Parameter Comparison

Engineering Selection Recommendations

CRCW121020R5FKEA (Vishay Dale) is the primary substitute for new designs. This part maintains Active product status, meets all electrical and mechanical specifications, and carries AEC-Q200 automotive qualification. The increased power rating (0.5W versus 0.333W) provides thermal margin without affecting circuit functionality. Physical dimensions remain within acceptable tolerance for PCB layout compatibility.

ERJ-14NF20R5U (Panasonic Electronic Components) is functionally equivalent but carries "Not For New Designs" product status. This designation indicates the manufacturer is discontinuing or has discontinued active promotion of this part number. While the part meets all electrical and mechanical parameters and maintains AEC-Q200 qualification, it should be selected only when inventory availability or legacy design requirements necessitate its use. The maximum seated height (0.028" / 0.70mm) is marginally higher than the main part and substitute alternatives.

Both substitute parts are suitable for direct replacement in existing designs where the RC3225F20R5CS is currently specified, provided that circuit design does not depend on the lower power rating of the original part.

Frequently Asked Questions (FAQ)

Q: Can CRCW121020R5FKEA replace RC3225F20R5CS in all applications?

A: Yes. The CRCW121020R5FKEA meets all mandatory electrical parameters (20.5 Ohms, ±1% tolerance, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range) and mechanical specifications (1210 package, 2 terminations, thick film composition). The higher power rating (0.5W versus 0.333W) is functionally compatible and does not create circuit incompatibility.

Q: Why does ERJ-14NF20R5U have "Not For New Designs" status?

A: "Not For New Designs" status indicates the manufacturer (Panasonic) is not actively promoting this part for new circuit designs. This typically reflects manufacturing transition, product line consolidation, or long-term availability concerns. The part remains electrically and mechanically equivalent and may be used in legacy designs or when specific inventory requirements apply.

Q: Are there physical dimension differences between these parts?

A: Minor dimensional variations exist within the 1210 package specification. The RC3225F20R5CS measures 0.126" L x 0.100" W with 0.026" maximum seated height. Both substitutes measure 0.126" L x 0.098" W, with CRCW121020R5FKEA at 0.024" and ERJ-14NF20R5U at 0.028" maximum seated height. These variations remain within standard 1210 package tolerances and do not affect PCB layout compatibility.

Q: Do all three parts carry the same compliance certifications?

A: All three parts are RoHS3 compliant with MSL Level 1 moisture sensitivity rating. CRCW121020R5FKEA and ERJ-14NF20R5U both carry AEC-Q200 automotive qualification, while RC3225F20R5CS specifies moisture resistant thick film composition. Compliance profiles are equivalent for general industrial and commercial applications.

Q: What is the inventory status of these parts?

A: RC3225F20R5CS: 1123 pieces in stock. CRCW121020R5FKEA: 4930 pieces in stock. ERJ-14NF20R5U: 14166 pieces in stock. Inventory levels reflect current availability and may change based on supply conditions.