RC3225F2490CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F2490CS is a 249 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format with 0.333W (1/3W) power rating. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part operates across the temperature range of -55°C to 155°C with a temperature coefficient of ±100ppm/°C.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, and temperature coefficient) and mechanical compatibility (package format, footprint dimensions, and termination count). Alternative sources become necessary for supply chain optimization, extended lead time mitigation, or design flexibility across manufacturing partners.

Substiute Parts

RC3225F2490CS

Samsung Electro-MechanicsIn Stock: 832RC3225F2490CS Datasheet

Current PartRFQ

AC1210FR-07249RL

YAGEOIn Stock: 4770AC1210FR-07249RL Datasheet

UpgradeRFQ

RC1210FR-07249RL

YAGEOIn Stock: 15833RC1210FR-07249RL Datasheet

UpgradeRFQ

CRCW1210249RFKEA

Vishay DaleIn Stock: 8976CRCW1210249RFKEA Datasheet

SimilarRFQ

ERJ-14NF2490U

Panasonic Electronic ComponentsIn Stock: 64562ERJ-14NF2490U Datasheet

SimilarRFQ

RMCF1210FT249R

Stackpole Electronics IncIn Stock: 24500RMCF1210FT249R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the RC3225F2490CS:

Upgrade Substitutes (Higher Power Rating): Parts AC1210FR-07249RL and RC1210FR-07249RL feature identical resistance (249 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), and package format (1210), but with increased power rating of 0.5W (1/2W) compared to the original 0.333W. These parts maintain the same operating temperature range (-55°C to 155°C), composition (thick film), and compliance certifications. The higher power rating allows operation in applications with greater thermal dissipation requirements while maintaining full electrical and mechanical compatibility.

Similar Substitutes (Equivalent Specifications): Parts CRCW1210249RFKEA, ERJ-14NF2490U, and RMCF1210FT249R match all critical electrical parameters (249 Ohms ±1%, ±100ppm/°C temperature coefficient) and mechanical specifications (1210 package, 2 terminations) with power ratings of 0.5W (1/2W). These parts are functionally equivalent with identical operating temperature range and compliance status.

Substitution Criteria:

• Resistance value: 249 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package format: 1210 (3225 Metric) (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature: -55°C to 155°C (exact match required)
• Composition: Thick film (exact match required)
• Power rating: Equal or greater than 0.333W (upgrade acceptable)

Parameter Comparison

Engineering Selection Recommendations

For Active Product Designs: RC1210FR-07249RL (YAGEO) is the primary recommended substitute, offering the highest inventory availability (15,729 pcs) with Active product status. This part maintains full electrical and mechanical compatibility while providing increased power rating margin. AC1210FR-07249RL (YAGEO) serves as an alternative upgrade option with automotive AEC-Q200 qualification for applications requiring enhanced reliability standards.

For Automotive and High-Reliability Applications: CRCW1210249RFKEA (Vishay Dale) and RMCF1210FT249R (Stackpole Electronics Inc) both carry AEC-Q200 automotive qualification with Active product status. RMCF1210FT249R provides 24,441 pcs inventory availability, while CRCW1210249RFKEA offers 8,964 pcs. Both parts are suitable for automotive-grade circuit implementations.

For Legacy Design Support: ERJ-14NF2490U (Panasonic Electronic Components) carries "Not For New Designs" status but maintains 64,527 pcs inventory availability. This part is suitable only for sustaining production of existing designs and should not be selected for new product development.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity level, ensuring regulatory alignment with the original RC3225F2490CS specification.

Frequently Asked Questions (FAQ)

Q: Can RC1210FR-07249RL replace RC3225F2490CS directly on the PCB?

A: Yes. Both parts use the 1210 (3225 Metric) package format with identical footprint dimensions and 2-pin termination configuration. The higher power rating (0.5W vs. 0.333W) does not affect mechanical compatibility or electrical performance in the circuit.

Q: What is the difference between "Upgrade" and "Similar" substitute classifications?

A: Upgrade substitutes (AC1210FR-07249RL, RC1210FR-07249RL) feature higher power ratings (0.5W) than the original part (0.333W), providing additional thermal margin. Similar substitutes (CRCW1210249RFKEA, ERJ-14NF2490U, RMCF1210FT249R) match all specifications including power rating at 0.5W. All maintain identical electrical parameters and package compatibility.

Q: Why is ERJ-14NF2490U marked "Not For New Designs"?

A: This designation indicates the part is in legacy status. While electrically and mechanically compatible, Panasonic has classified it as unsuitable for new product development. It remains available for sustaining production of existing designs only.

Q: Do all substitute parts carry automotive qualification?

A: No. AC1210FR-07249RL, CRCW1210249RFKEA, ERJ-14NF2490U, and RMCF1210FT249R carry AEC-Q200 automotive qualification. RC1210FR-07249RL does not list automotive qualification but maintains Active status for general industrial applications.

Q: Are there any differences in physical dimensions between substitute parts?

A: Minor variations exist within tolerance. RC3225F2490CS measures 0.126" L × 0.100" W (3.20mm × 2.55mm). Substitute parts range from 0.122" to 0.126" L and 0.098" to 0.102" W. Height variations range from 0.024" to 0.028" (0.60mm to 0.70mm). These variations remain within standard PCB assembly tolerances and do not affect interchangeability.

Q: Which substitute offers the best inventory availability?

A: ERJ-14NF2490U provides the highest inventory at 64,527 pcs. However, due to "Not For New Designs" status, RC1210FR-07249RL (15,729 pcs) is recommended for new designs, followed by RMCF1210FT249R (24,441 pcs) for automotive applications.

Q: Can I use a substitute part with higher power rating in a circuit designed for 0.333W?

A: Yes. A higher power rating (0.5W) indicates greater thermal dissipation capacity and does not degrade performance in circuits designed for lower power. The part will operate safely with equal or reduced power dissipation compared to its rating.