RC3225F393CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F393CS is a 39 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) package. This component is classified as Active product status with full RoHS3 compliance and MSL Level 1 rating. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint, enabling direct replacement in circuit designs where component availability or supply chain requirements necessitate alternative sourcing.

Substiute Parts

RC3225F393CS

Samsung Electro-MechanicsIn Stock: 1165RC3225F393CS Datasheet

Current PartRFQ

RC1210FR-0739KL

YAGEOIn Stock: 10927RC1210FR-0739KL Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F393CS is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

• Resistance value: 39 kOhms
• Tolerance: ±1%
• Package footprint: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance: Required
• RoHS3 compliance: Required
• MSL rating: Level 1 or equivalent

Allowable Variation:

• Power rating: Substitute parts may have equal or higher power dissipation capacity (0.333W minimum)
• Physical dimensions: Minor variations within standard 1210 package tolerances are acceptable
• Packaging format: Original part supplied in bulk; substitutes may be supplied in Tape & Reel format

The RC1210FR-0739KL from YAGEO meets all mandatory parameters with an upgraded power rating of 0.5W (1/2W), providing enhanced thermal margin while maintaining identical electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The RC1210FR-0739KL from YAGEO is a direct substitute for the RC3225F393CS from Samsung Electro-Mechanics based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical resistance value (39 kOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's higher power rating (0.5W versus 0.333W) provides additional thermal headroom without affecting circuit performance.

Mechanical Compatibility: Both components utilize the 1210 (3225 Metric) package footprint with dimensions within standard package tolerances. PCB layout and land pattern requirements remain unchanged.

Compliance & Certification: Both components are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 rating (unlimited moisture sensitivity protection). No additional qualification or testing is required from a regulatory standpoint.

Product Status: Both components maintain Active product status, ensuring continued availability and manufacturing support.

Selection between these components should be based on supply chain availability, lead time requirements, and packaging format preferences (bulk versus Tape & Reel).

Frequently Asked Questions (FAQ)

Q: Can RC1210FR-0739KL replace RC3225F393CS in all applications?

A: Yes. The substitute part maintains identical electrical specifications (39 kOhms ±1%, ±100ppm/°C, -55°C ~ 155°C operating range) and mechanical compatibility (1210 package footprint). The higher power rating (0.5W) does not create incompatibility; it provides additional thermal margin.

Q: Are there any PCB layout changes required when substituting RC1210FR-0739KL for RC3225F393CS?

A: No. Both components use the 1210 (3225 Metric) package with compatible land patterns. Existing PCB designs require no modification.

Q: What is the difference in physical dimensions between these parts?

A: RC3225F393CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with 0.026" max height. RC1210FR-0739KL measures 0.122" L x 0.102" W (3.10mm x 2.60mm) with 0.024" max height. Both fall within standard 1210 package tolerances and are mechanically interchangeable.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both components are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 rating. No additional compliance documentation is required for substitution.

Q: What is the significance of the higher power rating on the substitute part?

A: The RC1210FR-0739KL's 0.5W rating versus the RC3225F393CS's 0.333W rating indicates greater thermal dissipation capacity. This does not affect circuit operation but provides additional safety margin in applications approaching the original part's power limit.

Q: Are there packaging format differences between these parts?

A: The RC3225F393CS is supplied in bulk packaging. The RC1210FR-0739KL is supplied in Tape & Reel (TR) format. Both formats are standard for 1210 chip resistors and do not affect component performance or compatibility.

Q: Can these parts be used interchangeably in high-precision applications?

A: Yes. Both components maintain ±1% tolerance and ±100ppm/°C temperature coefficient, meeting identical precision requirements for high-accuracy circuit designs.