RC3225F391CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F391CS is a 390 Ohms ±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 with full RoHS3 compliance and Moisture Sensitivity Level 1 (unlimited shelf life). Equivalent and substitute parts are identified when electrical specifications, mechanical dimensions, and compliance certifications align within acceptable engineering tolerances for direct circuit board replacement.

Substiute Parts

RC3225F391CS

Samsung Electro-MechanicsIn Stock: 1098RC3225F391CS Datasheet

Current PartRFQ

RC1210FR-07390RL

YAGEOIn Stock: 15551RC1210FR-07390RL Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F391CS is determined by strict alignment of the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value must be 390 Ohms
• Tolerance must be ±1% or tighter
• Power rating must be equal to or greater than 0.333W
• Temperature coefficient must be ±100ppm/°C or better
• Operating temperature range must encompass -55°C to 155°C

Mechanical Compatibility Requirements:

• Package format must be 1210 (3225 Metric)
• Physical dimensions must be compatible with PCB land patterns
• Number of terminations must be 2

Compliance Requirements:

• RoHS3 compliance mandatory
• Moisture Sensitivity Level must be MSL 1 or equivalent
• REACH status must be unaffected or compliant

The RC1210FR-07390RL from YAGEO meets all substitution criteria. This part maintains identical resistance, tolerance, temperature coefficient, and operating temperature specifications. The power rating is upgraded to 0.5W (1/2W), which exceeds the minimum requirement and provides additional thermal margin. Package dimensions remain within acceptable tolerance for 1210 footprint compatibility. Both parts carry identical RoHS3 and MSL 1 certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (RC3225F391CS): The RC3225F391CS remains the specified component when Samsung Electro-Mechanics supply chain continuity is established and inventory availability meets production schedules. This part carries Active product status with confirmed stock of 1023 pieces.

Substitute Part Selection (RC1210FR-07390RL): The RC1210FR-07390RL is a qualified substitute when primary part availability is constrained or supply chain disruption occurs. Selection of this substitute is supported by:

• Identical electrical specifications (390 Ohms, ±1% tolerance, ±100ppm/°C temperature coefficient)
• Identical operating temperature range (-55°C to 155°C)
• Enhanced power rating (0.5W versus 0.333W) providing thermal margin
• Identical package footprint (1210 / 3225 Metric)
• Matching compliance certifications (RoHS3, MSL 1, REACH Unaffected)
• Higher inventory availability (15521 pieces in stock)
• Active product status with established supply chain

Both parts are suitable for direct PCB replacement without circuit redesign or thermal analysis modification.

Frequently Asked Questions (FAQ)

Q: Can RC1210FR-07390RL replace RC3225F391CS in existing designs?

A: Yes. Both parts share identical resistance value (390 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The substitute part features a higher power rating (0.5W versus 0.333W), which is acceptable for direct substitution. Package dimensions are compatible with 1210 (3225 Metric) PCB land patterns.

Q: What is the difference in power rating between these parts?

A: The RC3225F391CS is rated for 0.333W (1/3W) power dissipation. The RC1210FR-07390RL is rated for 0.5W (1/2W). The higher rating on the substitute part provides additional thermal capability and does not create compatibility issues in circuits designed for the lower-rated part.

Q: Are the physical dimensions compatible?

A: Yes. The RC3225F391CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with a maximum seated height of 0.026" (0.66mm). The RC1210FR-07390RL measures 0.122" L x 0.102" W (3.10mm x 2.60mm) with a maximum seated height of 0.024" (0.60mm). Both dimensions fall within acceptable tolerance for 1210 package footprint compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the RC3225F391CS and RC1210FR-07390RL carry RoHS3 compliance, Moisture Sensitivity Level 1 (unlimited shelf life), and REACH Unaffected status. No additional compliance verification is required for substitution.

Q: What packaging formats are available?

A: The RC3225F391CS is supplied in standard packaging format. The RC1210FR-07390RL is supplied in Tape & Reel (TR) format. Packaging format selection depends on assembly process requirements and volume specifications.

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

A: Both parts are Active status components with identical electrical specifications and compliance certifications. Interchangeability in high-reliability applications depends on specific qualification requirements established by the end-use industry or customer specification. Consult application-specific reliability standards for final determination.