RC3225F7873CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F7873CS is a 787 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) in a 1210 (3225 Metric) package. This component is classified as Active product status and is ROHS3 compliant with MSL 1 moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances. The primary substitute identified is the ERJ-14NF7873U from Panasonic Electronic Components, which shares the same resistance value, tolerance, package footprint, and operating temperature range while offering increased power rating and automotive qualification.

Substiute Parts

RC3225F7873CS

Samsung Electro-MechanicsIn Stock: 925RC3225F7873CS Datasheet

Current PartRFQ

ERJ-14NF7873U

Panasonic Electronic ComponentsIn Stock: 5705ERJ-14NF7873U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC3225F7873CS is based on the following criteria:

Primary Matching Parameters:

• Resistance value: 787 kOhms (exact match required)
• Tolerance: ±1% (equal or tighter tolerance acceptable)
• Package: 1210 (3225 Metric) (footprint compatibility mandatory)
• Composition: Thick Film (electrical characteristic consistency)
• Temperature Coefficient: ±100ppm/°C (thermal stability requirement)
• Operating Temperature: -55°C ~ 155°C (full range support required)

Secondary Considerations:

• Power rating: Substitutes may equal or exceed the 0.333W specification
• Termination count: Must remain 2 terminations
• Moisture sensitivity: MSL 1 acceptable for both main and substitute parts

The ERJ-14NF7873U meets all primary matching parameters. It provides identical resistance, tolerance, package, composition, temperature coefficient, and operating temperature range. The substitute offers a higher power rating (0.5W versus 0.333W), which is acceptable for applications where the main part specification is met or exceeded. The substitute includes automotive AEC-Q200 qualification, which is an additional feature not present in the main part.

Parameter Comparison

Engineering Selection Recommendations

RC3225F7873CS (Main Part):

• Recommended for new designs requiring ROHS3 compliance
• Active product status ensures long-term availability and supply chain stability
• Suitable for applications where RoHS compliance is a mandatory requirement
• Standard 1/3W power rating appropriate for general-purpose signal conditioning and biasing circuits

ERJ-14NF7873U (Substitute):

• Acceptable for applications where RoHS compliance is not required or where legacy system maintenance is the objective
• Product status "Not For New Designs" indicates this part is in mature or declining production phase; use only for replacement or repair of existing assemblies
• Higher power rating (0.5W) provides additional thermal margin in applications where the main part specification is marginal
• Automotive AEC-Q200 qualification available if automotive-grade reliability is required, though this is not a requirement for the main part application
• Suitable for retrofit applications in existing equipment where component replacement is necessary

Compliance Considerations:

• If ROHS3 compliance is mandatory for your application, the RC3225F7873CS is the appropriate choice
• If RoHS compliance is not a constraint and the application permits use of mature-phase components, ERJ-14NF7873U is electrically and mechanically compatible
• Both parts maintain identical electrical performance within specified tolerances

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF7873U be used as a direct replacement for RC3225F7873CS in new product designs?

A: ERJ-14NF7873U is electrically and mechanically compatible with RC3225F7873CS. However, the substitute carries "Not For New Designs" product status. For new designs, RC3225F7873CS is the recommended choice due to its Active status and ROHS3 compliance. ERJ-14NF7873U is appropriate for retrofit, repair, or legacy system maintenance only.

Q: What are the critical parameters that must match between the main part and substitute?

A: The following parameters must match exactly: resistance value (787 kOhms), tolerance (±1%), package footprint (1210/3225 Metric), composition (Thick Film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The power rating may be equal or exceeded in the substitute.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist. The ERJ-14NF7873U is 0.002" (0.05mm) narrower in width and 0.002" (0.04mm) taller in seated height compared to RC3225F7873CS. These variations are within standard PCB design tolerances and do not affect footprint compatibility or assembly.

Q: What is the significance of the RoHS compliance difference?

A: RC3225F7873CS is ROHS3 compliant, while ERJ-14NF7873U is RoHS non-compliant. If your application, customer requirements, or regional regulations mandate RoHS compliance, RC3225F7873CS must be used. If RoHS compliance is not a requirement, both parts are functionally equivalent.

Q: Why does the substitute have a higher power rating?

A: The ERJ-14NF7873U is rated at 0.5W (1/2W) compared to the main part's 0.333W (1/3W). A higher power rating indicates greater thermal dissipation capability. This is acceptable for substitution because the substitute can handle all applications where the main part is specified. The substitute provides additional thermal margin but does not change the electrical circuit behavior.

Q: Can I use these parts interchangeably in existing assemblies?

A: Yes, for replacement or repair of existing assemblies. The parts are electrically and mechanically compatible. However, verify that your application does not have specific compliance requirements (such as ROHS3) that would restrict the use of ERJ-14NF7873U.

Q: What does "Not For New Designs" mean for the ERJ-14NF7873U?

A: This product status indicates that Panasonic is not recommending this part for incorporation into new product designs. The part may have limited future availability or may be in end-of-life phase. It remains suitable for maintenance, repair, and replacement of existing equipment, but should not be selected for new development projects.

Q: Are there other substitute parts available for RC3225F7873CS?

A: The ERJ-14NF7873U is the primary substitute identified based on the provided parameters. The ERJ-14NF7873U specification sheet references additional cross-references (CRCW1210787KFKTA, CRCW1210787KFKEA, ERJ-P06F7873V, AF1210FR-07787KL, AC1210FR-07787KL), but these are not included in the current analysis as they were not provided in the main part substitution data.