RC3225F3482CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F3482CS is a 34.8 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This component is rated for 0.333W (1/3W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the same package footprint and core electrical specifications. Alternative sources become necessary for supply chain continuity, extended lead time mitigation, or when specific certifications such as automotive AEC-Q200 qualification are required for application-specific requirements.

Substiute Parts

RC3225F3482CS

Samsung Electro-MechanicsIn Stock: 861RC3225F3482CS Datasheet

Current PartRFQ

CRCW121034K8FKEA

Vishay DaleIn Stock: 7265CRCW121034K8FKEA Datasheet

SimilarRFQ

ERJ-14NF3482U

Panasonic Electronic ComponentsIn Stock: 6607ERJ-14NF3482U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution validity for the RC3225F3482CS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Requirements:

• Resistance value must be exactly 34.8 kOhms
• Tolerance must be ±1% or tighter
• Package must be 1210 (3225 Metric) for PCB footprint compatibility
• Composition must be thick film
• Temperature coefficient must be ±100ppm/°C
• Operating temperature range must encompass -55°C to 155°C

Acceptable Variation:

• Power rating may exceed 0.333W (higher power ratings are acceptable as they provide additional thermal margin)
• Physical dimensions may vary within the 1210 package specification limits
• Packaging format (Tape & Reel vs. bulk) does not affect electrical substitution validity
• Certifications such as AEC-Q200 are additive features that do not prevent substitution

Non-Substitutable Differences:

• Different resistance values
• Tolerance wider than ±1%
• Different package sizes
• Operating temperature ranges that do not fully encompass the required -55°C to 155°C window

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CRCW121034K8FKEA (Vishay Dale)

The CRCW121034K8FKEA maintains all critical electrical parameters identical to the RC3225F3482CS while providing enhanced power rating (0.5W vs. 0.333W). This component carries Active product status and AEC-Q200 automotive qualification. The increased power rating provides additional thermal margin without affecting circuit performance. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for direct substitution in all applications where the RC3225F3482CS is specified.

Secondary Substitute: ERJ-14NF3482U (Panasonic Electronic Components)

The ERJ-14NF3482U is electrically and mechanically equivalent to the RC3225F3482CS with identical resistance, tolerance, temperature coefficient, and operating range. Power rating is increased to 0.5W. However, this component carries "Not For New Designs" product status, indicating it is in mature or declining production phase. AEC-Q200 certification is present. This part is acceptable for replacement in existing designs or legacy applications but should not be selected for new product development.

Selection Criteria:

For new designs and applications requiring long-term supply assurance, select CRCW121034K8FKEA due to Active product status and automotive qualification.

For existing designs currently using RC3225F3482CS, either CRCW121034K8FKEA or ERJ-14NF3482U provide valid substitution with no circuit redesign required.

Frequently Asked Questions (FAQ)

Q: Can CRCW121034K8FKEA replace RC3225F3482CS in existing designs without PCB modification?

A: Yes. Both components use the 1210 (3225 Metric) package with identical footprint dimensions (0.126" L x 0.100" W nominal). Physical dimensions fall within the same package specification limits. No PCB layout changes are required.

Q: Why does CRCW121034K8FKEA have a higher power rating (0.5W vs. 0.333W)?

A: Higher power rating indicates greater thermal dissipation capability. This is an enhancement that does not affect circuit operation. The component will operate safely at or below the original 0.333W specification while providing additional thermal margin for transient conditions.

Q: Is ERJ-14NF3482U suitable for new product designs?

A: No. The "Not For New Designs" status indicates the part is in mature production phase with potential future discontinuation. For new designs, CRCW121034K8FKEA is the recommended choice due to Active product status.

Q: Do all three parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. CRCW121034K8FKEA and ERJ-14NF3482U additionally carry AEC-Q200 automotive qualification.

Q: What is the significance of the ±100ppm/°C temperature coefficient?

A: This specification defines the resistance change per degree Celsius across the operating temperature range. All three parts maintain identical temperature coefficient, ensuring equivalent frequency response and thermal stability characteristics in circuit applications.

Q: Can these parts be used interchangeably in automotive applications?

A: CRCW121034K8FKEA carries explicit AEC-Q200 automotive qualification and is suitable for automotive use. RC3225F3482CS and ERJ-14NF3482U do not list automotive certifications. For automotive applications, CRCW121034K8FKEA is the appropriate selection.

Q: Are there packaging format differences between these parts?

A: RC3225F3482CS is supplied in standard packaging format. CRCW121034K8FKEA and ERJ-14NF3482U are supplied in Tape & Reel (TR) format. Packaging format affects handling and assembly processes but does not affect electrical performance or substitution validity.