RC3225F6981CS Equivalent & Substitute Parts

Part Overview

The RC3225F6981CS is a 6.98 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 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 (Unlimited) moisture sensitivity rating.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers while maintaining electrical and mechanical compatibility. The RC3225F6981CS has documented substitute availability through Panasonic Electronic Components.

Substiute Parts

RC3225F6981CS

Samsung Electro-MechanicsIn Stock: 878RC3225F6981CS Datasheet

Current PartRFQ

ERJ-14NF6981U

Panasonic Electronic ComponentsIn Stock: 976ERJ-14NF6981U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F6981CS is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Resistance value: 6.98 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package format: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (minimum requirement)

Allowable Variation Parameters:

• Power rating: Substitute parts may exceed the 0.333W specification, provided the package dimensions remain compatible with 1210 form factor
• Manufacturer: Different manufacturers permitted
• Product status: Substitutes may have different product status classifications
• Packaging format: May differ (Tape & Reel vs. other formats)
• Certifications: Additional certifications (such as AEC-Q200) are permissible

The ERJ-14NF6981U from Panasonic Electronic Components qualifies as a substitute because it maintains identical resistance, tolerance, package format, composition, and temperature coefficient specifications. The higher power rating (0.5W vs. 0.333W) represents an acceptable upgrade within the same package envelope.

Parameter Comparison

Engineering Selection Recommendations

RC3225F6981CS (Primary Selection): The RC3225F6981CS maintains Active product status, indicating ongoing manufacturer support and continued availability. This component is the preferred choice for new designs and applications requiring long-term supply assurance. The part is RoHS3 compliant and carries MSL 1 rating, suitable for standard manufacturing environments without special moisture control requirements.

ERJ-14NF6981U (Substitute Selection): The ERJ-14NF6981U from Panasonic Electronic Components qualifies as an electrical and mechanical substitute. This part carries AEC-Q200 automotive qualification, indicating enhanced reliability screening and suitability for automotive applications. However, the product status is classified as "Not For New Designs," restricting its use to legacy system support, field replacements, or applications where existing inventory must be maintained.

The ERJ-14NF6981U is appropriate for:

• Replacement of failed RC3225F6981CS components in fielded systems
• Applications where automotive-grade reliability (AEC-Q200) is required
• Situations where Samsung component availability is constrained

The ERJ-14NF6981U is not appropriate for:

• New product designs requiring long-term component availability
• Applications where manufacturer support continuity is critical

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF6981U be used as a direct replacement for RC3225F6981CS in new designs?

A: No. The ERJ-14NF6981U carries "Not For New Designs" status. While electrical and mechanical parameters are compatible, this classification indicates the manufacturer does not recommend this part for new product development. The RC3225F6981CS should be specified for new designs.

Q: What is the significance of the higher power rating on the ERJ-14NF6981U (0.5W vs. 0.333W)?

A: The higher power rating represents a capability upgrade. In applications where the RC3225F6981CS is rated for 0.333W dissipation, the ERJ-14NF6981U can safely handle this load with additional thermal margin. This does not create compatibility issues; it only provides enhanced performance headroom.

Q: Are the dimensional differences between these parts significant?

A: The dimensional variations are minimal and within acceptable tolerances for 1210 package form factor applications. The length remains 0.126" (3.20mm) on both parts. Width varies by 0.002" (0.05mm) and height by 0.002" (0.04mm). These differences are negligible for standard PCB layout and assembly processes.

Q: Does the AEC-Q200 certification on the ERJ-14NF6981U provide any advantage?

A: AEC-Q200 certification indicates the part has undergone automotive-grade reliability testing and screening. This certification is valuable for automotive applications or systems requiring enhanced reliability assurance. For non-automotive applications, this certification provides no functional advantage but does not create incompatibility.

Q: Can both parts be used interchangeably in existing inventory?

A: From an electrical and mechanical standpoint, yes. Both parts have identical resistance, tolerance, package format, and operating temperature range. However, supply chain and procurement practices should maintain clear part number traceability. Mixing part numbers in inventory requires documented procedures to prevent confusion during assembly and field service.

Q: What is the MSL 1 rating and why is it identical on both parts?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without special moisture control requirements. Both parts carry this rating, meaning neither component requires dry-pack storage, desiccant, or controlled humidity environments during normal handling and storage.