RC3225F1822CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F1822CS is an 18.2 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 currently in active production status with 1133 units available in inventory.

Equivalent and substitute parts are identified when design requirements permit component sourcing from alternative manufacturers or when the original part becomes unavailable. Substitution is valid when electrical specifications, mechanical dimensions, and environmental compliance ratings remain within acceptable tolerances for the application.

Substiute Parts

RC3225F1822CS

Samsung Electro-MechanicsIn Stock: 1163RC3225F1822CS Datasheet

Current PartRFQ

ERJ-14NF1822U

Panasonic Electronic ComponentsIn Stock: 6491ERJ-14NF1822U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC3225F1822CS is valid when the following criteria are met:

Mandatory Electrical Parameters:

• Resistance value: 18.2 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Package: 1210 (3225 Metric) (exact match)
• Composition: Thick Film (exact match)
• Temperature Coefficient: ±100ppm/°C (exact match)
• Operating Temperature Range: -55°C to 155°C (exact match or better)

Allowable Variations:

• Power Rating: Equal to or greater than 0.333W (1/3W) is acceptable
• Physical dimensions: Minor variations within standard package tolerances are acceptable
• Packaging format: May differ (Tape & Reel vs. bulk) without affecting electrical compatibility
• Certifications: Additional certifications (such as AEC-Q200) do not prevent substitution

Compliance Requirements:

• RoHS3 compliance required
• REACH unaffected status required
• Moisture Sensitivity Level 1 required

The identified substitute ERJ-14NF1822U meets all mandatory electrical parameters and compliance requirements. The higher power rating (0.5W vs. 0.333W) provides additional thermal margin and is acceptable for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC3225F1822CS): The RC3225F1822CS is the recommended choice for new designs. This component maintains active production status, ensuring long-term availability and supply chain stability. The part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. With 1133 units in current inventory, immediate procurement is feasible.

Substitute Selection (ERJ-14NF1822U): The ERJ-14NF1822U is electrically and mechanically equivalent to the RC3225F1822CS and is acceptable for substitution when the primary part is unavailable. This Panasonic component meets all mandatory electrical specifications: 18.2 kOhms ±1% resistance, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The higher power rating (0.5W vs. 0.333W) provides additional thermal margin without affecting circuit performance.

Compliance Considerations: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. The ERJ-14NF1822U includes AEC-Q200 automotive certification, which does not restrict its use in non-automotive applications.

Product Status Impact: The ERJ-14NF1822U carries a "Not For New Designs" status from Panasonic. This designation indicates the part is in mature production but not recommended for new product development. Use this substitute only when the primary RC3225F1822CS is unavailable or when design constraints require the automotive-grade AEC-Q200 certification.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1822U be used as a direct replacement for RC3225F1822CS on existing PCBs?

A: Yes. Both components use the identical 1210 (3225 Metric) package with compatible footprints. Physical dimensions are within standard package tolerances (length 3.20mm for both; width 3.20mm vs. 2.50mm; height 0.66mm vs. 0.70mm). The substitute can be soldered into existing RC3225F1822CS positions without PCB redesign.

Q: Does the higher power rating of ERJ-14NF1822U (0.5W vs. 0.333W) affect circuit operation?

A: No. A higher power rating does not change electrical performance. The 0.5W rating on the ERJ-14NF1822U indicates greater thermal capacity, which is beneficial. The resistor will operate identically in the circuit; the additional power margin simply reduces thermal stress on the component.

Q: Are there compliance differences between RC3225F1822CS and ERJ-14NF1822U?

A: Both parts are ROHS3 compliant and REACH unaffected. The ERJ-14NF1822U includes AEC-Q200 automotive certification, which is an additional qualification. This certification does not restrict use in non-automotive applications and does not create incompatibility.

Q: What does "Not For New Designs" mean for the ERJ-14NF1822U?

A: This Panasonic designation indicates the part is in mature production phase and available for current orders, but Panasonic does not recommend it for new product development. For new designs, the RC3225F1822CS (active status) is the preferred choice. The ERJ-14NF1822U is suitable for replacement, repair, and legacy system applications.

Q: Are the temperature coefficients identical between both parts?

A: Yes. Both RC3225F1822CS and ERJ-14NF1822U specify ±100ppm/°C temperature coefficient and operate across -55°C to 155°C. Temperature stability characteristics are equivalent.

Q: Can packaging format (Tape & Reel vs. bulk) affect substitution?

A: No. Packaging format affects logistics and handling but does not impact electrical or mechanical compatibility. The ERJ-14NF1822U supplied in Tape & Reel format is functionally identical to bulk-packaged alternatives. Packaging selection depends on assembly process requirements, not component performance.

Q: What is the tolerance specification, and why is ±1% critical for substitution?

A: Both parts specify ±1% tolerance, meaning the actual resistance value will fall within 18.018 kOhms to 18.382 kOhms. This tolerance is critical for substitution because it ensures circuit performance remains within design specifications. Substitutes with different tolerance ratings (such as ±5%) would not be acceptable.