RC3225F822CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F822CS is an 8.2 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 is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). This resistor is designed for applications requiring precision resistance values with moisture resistance in compact surface-mount configurations. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the 1210 package family.

Substiute Parts

RC3225F822CS

Samsung Electro-MechanicsIn Stock: 744RC3225F822CS Datasheet

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RC1210FR-078K2L

YAGEOIn Stock: 5670RC1210FR-078K2L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3225F822CS are identified based on the following critical parameters:

Electrical Compatibility Requirements:

• Resistance value: 8.2 kOhms (exact match required)
• Tolerance: ±1% (substitute must meet or exceed this precision)
• Temperature coefficient: ±100ppm/°C (matching thermal stability)
• Operating temperature range: -55°C ~ 155°C (minimum coverage required)

Mechanical Compatibility Requirements:

• Package / Case: 1210 (3225 Metric) (identical footprint)
• Composition: Thick Film (consistent material technology)
• Number of Terminations: 2 (standard chip resistor configuration)

Regulatory & Environmental Requirements:

• RoHS Status: ROHS3 Compliant (mandatory for regulated applications)
• Moisture Sensitivity Level: MSL 1 (unlimited handling flexibility)

Power Rating Consideration: The substitute part may have equal or higher power rating than the original 0.333W specification. A higher power rating does not compromise circuit function and provides additional thermal margin. The physical dimensions must remain compatible with the 1210 package constraint.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The RC1210FR-078K2L (YAGEO) is a direct substitute for the RC3225F822CS (Samsung Electro-Mechanics) based on matching electrical and mechanical specifications. Both components share identical resistance value, tolerance, temperature coefficient, and operating temperature range. Both are ROHS3 compliant and carry MSL 1 rating, ensuring equivalent regulatory and environmental handling characteristics.

Power Rating Advantage:

The substitute part features a 0.5W power rating compared to the original 0.333W specification. This higher power rating provides additional thermal dissipation capability without affecting circuit performance or physical compatibility. The increased power margin is beneficial in applications subject to thermal stress or component aging.

Physical Compatibility:

Both parts conform to the 1210 (3225 Metric) package standard. Dimensional variations (0.126" vs 0.122" length; 0.100" vs 0.102" width; 0.026" vs 0.024" height) fall within standard package tolerances and do not affect PCB footprint compatibility or assembly processes.

Compliance Status:

Both components maintain ROHS3 compliance and unlimited moisture sensitivity level, ensuring compatibility with regulated manufacturing environments and standard handling procedures without special precautions.

Frequently Asked Questions (FAQ)

Q: Can RC1210FR-078K2L replace RC3225F822CS in all applications?

A: Yes. The substitute part matches all critical electrical parameters (resistance, tolerance, temperature coefficient, operating range) and maintains identical package compatibility. The higher power rating (0.5W vs 0.333W) does not create incompatibility and provides additional thermal margin.

Q: What is the significance of the different power ratings?

A: The substitute part's 0.5W rating indicates higher thermal dissipation capability. In circuit applications, the actual power dissipation is determined by the circuit design, not the component rating. A higher-rated component simply provides additional safety margin and does not alter electrical behavior.

Q: Are the physical dimension differences significant?

A: No. Both components conform to the 1210 (3225 Metric) package standard. The dimensional variations (approximately 0.004" in length and width, 0.002" in height) are within standard package tolerances and do not affect PCB land pattern compatibility or assembly processes.

Q: Do both parts have identical compliance certifications?

A: Yes. Both RC3225F822CS and RC1210FR-078K2L are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity level. They are equivalent from regulatory and environmental handling perspectives.

Q: What is the temperature coefficient and why does it matter?

A: Both parts have ±100ppm/°C temperature coefficient, meaning the resistance value changes by approximately 0.01% per degree Celsius across the operating range. This specification ensures predictable performance stability across the -55°C to 155°C operating window.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. The 1210 package footprint is standardized, and both components have compatible land pattern requirements. Assembly equipment and reflow processes require no modification for substitution.