RC3225F4990CS Equivalent & Substitute Parts

Part Overview

The RC3225F4990CS is a 499 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This component delivers 0.333W (1/3W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified for applications requiring higher power ratings, automotive-grade certifications, or alternative manufacturer sourcing while maintaining the same electrical specifications and package footprint.

Substiute Parts

RC3225F4990CS

Samsung Electro-MechanicsIn Stock: 837RC3225F4990CS Datasheet

Current PartRFQ

AC1210FR-07499RL

YAGEOIn Stock: 7051AC1210FR-07499RL Datasheet

UpgradeRFQ

RC1210FR-07499RL

YAGEOIn Stock: 6095RC1210FR-07499RL Datasheet

UpgradeRFQ

CRCW1210499RFKEA

Vishay DaleIn Stock: 22913CRCW1210499RFKEA Datasheet

SimilarRFQ

ERJ-14NF4990U

Panasonic Electronic ComponentsIn Stock: 19998ERJ-14NF4990U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC3225F4990CS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Resistance value: 499 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (exact match required)
• Composition: Thick Film (exact match required)
• Number of Terminations: 2 (exact match required)

Allowable Variations:

• Power Rating: Substitute parts may have equal or higher power ratings (0.5W or greater acceptable)
• Features: Substitute parts may include additional features such as Automotive AEC-Q200 certification
• Manufacturer: Different manufacturers acceptable if all critical parameters match
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) acceptable as alternative to original packaging

All substitute parts listed maintain identical electrical performance for the specified resistance, tolerance, and temperature characteristics while offering enhanced power handling or automotive-grade reliability options.

Parameter Comparison

Engineering Selection Recommendations

Primary Upgrade Options:

The AC1210FR-07499RL and RC1210FR-07499RL represent direct upgrades from the RC3225F4990CS. Both parts increase power dissipation from 0.333W to 0.5W while maintaining all critical electrical parameters. The AC1210FR-07499RL includes Automotive AEC-Q200 certification, making it suitable for automotive applications. Both YAGEO parts are currently active in production and maintain ROHS3 compliance with MSL 1 rating.

Alternative Options:

The CRCW1210499RFKEA (Vishay Dale) and ERJ-14NF4990U (Panasonic) provide equivalent electrical performance with 0.5W power ratings and Automotive AEC-Q200 certification. The Vishay part is actively produced, while the Panasonic ERJ-14NF4990U carries a "Not For New Designs" status, limiting its use to legacy system support or replacement applications only.

Selection Criteria:

• For new designs requiring automotive qualification: AC1210FR-07499RL or CRCW1210499RFKEA
• For general industrial applications with higher power margin: RC1210FR-07499RL
• For legacy system replacement only: ERJ-14NF4990U
• For continued use of original specification: RC3225F4990CS (Samsung Electro-Mechanics)

All substitute parts maintain identical resistance, tolerance, temperature coefficient, and operating temperature range. The primary differentiator is power rating elevation and automotive certification availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC3225F4990CS with a higher power-rated resistor?

A: Yes. The AC1210FR-07499RL, RC1210FR-07499RL, CRCW1210499RFKEA, and ERJ-14NF4990U all provide 0.5W power ratings while maintaining the same 499 Ohm resistance, ±1% tolerance, and 1210 package footprint. Higher power ratings do not degrade performance in applications designed for the original 0.333W specification.

Q: Are all substitute parts physically compatible with the original RC3225F4990CS?

A: All substitute parts use the 1210 (3225 Metric) package format with identical termination count (2 terminations). Physical dimensions vary slightly within acceptable tolerances. The AC1210FR-07499RL and RC1210FR-07499RL measure 0.122" L x 0.102" W compared to the original 0.126" L x 0.100" W, and all parts have maximum seated heights between 0.024" and 0.028", ensuring PCB layout compatibility.

Q: Which substitute part should I use for automotive applications?

A: The AC1210FR-07499RL and CRCW1210499RFKEA both carry Automotive AEC-Q200 certification. The AC1210FR-07499RL is the recommended choice as it is actively produced by YAGEO with confirmed inventory availability.

Q: Why is the ERJ-14NF4990U marked "Not For New Designs"?

A: The ERJ-14NF4990U carries a "Not For New Designs" status from Panasonic, indicating the manufacturer is phasing out this product line. This part is suitable only for replacement or legacy system support. New designs should specify AC1210FR-07499RL, RC1210FR-07499RL, or CRCW1210499RFKEA.

Q: Do all substitute parts maintain the same moisture resistance and MSL rating?

A: The AC1210FR-07499RL and RC1210FR-07499RL maintain identical moisture resistance and MSL 1 (Unlimited) rating. The CRCW1210499RFKEA and ERJ-14NF4990U do not specify moisture resistance in their detailed descriptions, though both carry MSL 1 rating.

Q: What is the temperature coefficient specification for substitute parts?

A: All substitute parts maintain the ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range identical to the RC3225F4990CS.

Q: Are substitute parts available in different packaging formats?

A: Yes. The AC1210FR-07499RL and RC1210FR-07499RL are supplied in Tape & Reel (TR) format. The CRCW1210499RFKEA is available in Cut Tape (CT) and Digi-Reel® packaging. The original RC3225F4990CS is supplied in standard packaging. All formats are compatible for component placement and soldering operations.