RC3225F68R1CS Equivalent & Substitute Parts

Part Overview

The RC3225F68R1CS is a 68.1 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This moisture-resistant component is rated for 0.333W (1/3W) power dissipation and operates across the temperature range of -55°C to 155°C. The part is currently in active production status and maintains full RoHS3 compliance with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or where specific manufacturer certifications such as automotive AEC-Q200 qualification are required.

Substiute Parts

RC3225F68R1CS

Samsung Electro-MechanicsIn Stock: 825RC3225F68R1CS Datasheet

Current PartRFQ

CRCW121068R1FKEA

Vishay DaleIn Stock: 11923CRCW121068R1FKEA Datasheet

SimilarRFQ

ERJ-14NF68R1U

Panasonic Electronic ComponentsIn Stock: 21706ERJ-14NF68R1U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC3225F68R1CS is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Resistance value: 68.1 Ohms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Number of terminations: 2
• RoHS3 compliance

Allowable Variation Parameters:

• Power rating: Substitute parts rated at 0.5W (1/2W) or higher are electrically compatible with the 0.333W (1/3W) specification, as higher power ratings provide equivalent or superior thermal performance in the same package
• Physical dimensions: Minor variations in length, width, and height within the 1210 package specification are acceptable
• Manufacturer certifications: Additional certifications such as AEC-Q200 automotive qualification do not preclude substitution

The identified substitute parts CRCW121068R1FKEA and ERJ-14NF68R1U meet all mandatory equivalence parameters and feature higher power ratings (0.5W) within the same 1210 package footprint.

Parameter Comparison

Engineering Selection Recommendations

CRCW121068R1FKEA (Vishay Dale) is the primary substitute for the RC3225F68R1CS. This part maintains active production status and provides identical electrical specifications with enhanced power rating (0.5W versus 0.333W). The CRCW121068R1FKEA includes AEC-Q200 automotive qualification, making it suitable for both commercial and automotive applications. Physical dimensions remain within 1210 package tolerance.

ERJ-14NF68R1U (Panasonic Electronic Components) is a secondary substitute option. While electrically equivalent and AEC-Q200 qualified, this part carries a "Not For New Designs" product status designation. The ERJ-14NF68R1U remains available in inventory and is suitable for replacement or legacy system applications where existing design validation has been completed.

Both substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CRCW121068R1FKEA replace RC3225F68R1CS in existing designs?

A: Yes. The CRCW121068R1FKEA is electrically and mechanically equivalent. The higher power rating (0.5W versus 0.333W) provides equal or superior performance in the same 1210 package footprint. No circuit redesign is required.

Q: What is the significance of the higher power rating in substitute parts?

A: The 0.5W power rating in CRCW121068R1FKEA and ERJ-14NF68R1U indicates greater thermal capacity within the identical 1210 package. This provides design margin and does not create incompatibility with circuits designed for 0.333W components.

Q: Why is ERJ-14NF68R1U marked "Not For New Designs"?

A: This designation indicates that Panasonic has discontinued active development of this part series. While the part remains available and functionally equivalent, it is not recommended for new product development. CRCW121068R1FKEA is the preferred choice for new designs.

Q: Are there packaging differences between these parts?

A: All three parts use the 1210 (3225 Metric) package format. Minor dimensional variations exist within standard package tolerance. CRCW121068R1FKEA is supplied in Tape & Reel (TR) packaging, while RC3225F68R1CS packaging format is not specified in available data.

Q: Do substitute parts require different PCB footprints?

A: No. All parts conform to the 1210 package standard and use identical PCB footprints. No layout modifications are necessary.

Q: Are all parts RoHS3 compliant?

A: Yes. RC3225F68R1CS, CRCW121068R1FKEA, and ERJ-14NF68R1U are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.