RC3225F2550CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F2550CS is a 255 Ohms ±1% 1/3W chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently in active production status with 669 units in stock.

Equivalent and substitute parts are identified when electrical specifications (resistance value, tolerance, temperature coefficient, operating range) and mechanical parameters (package type, termination count, physical dimensions) align within acceptable engineering tolerances. Substitute parts may offer enhanced power ratings, automotive certifications, or alternative sourcing options while maintaining functional compatibility.

Substiute Parts

RC3225F2550CS

Samsung Electro-MechanicsIn Stock: 737RC3225F2550CS Datasheet

Current PartRFQ

AC1210FR-07255RL

YAGEOIn Stock: 1125AC1210FR-07255RL Datasheet

UpgradeRFQ

ERJ-14NF2550U

Panasonic Electronic ComponentsIn Stock: 17927ERJ-14NF2550U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F2550CS is determined by the following mandatory parameters:

Electrical Equivalence Requirements:

• Resistance value: 255 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (minimum requirement)

Mechanical Compatibility Requirements:

• Package / Case: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of Terminations: 2 (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (minimum requirement)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (minimum requirement)

Power Rating Consideration: The RC3225F2550CS operates at 0.333W (1/3W). Substitute parts with equal or higher power ratings (0.5W, 1/2W or greater) are functionally compatible, as they provide equal or superior thermal performance in the same package footprint.

Based on these criteria, the following parts qualify as substitutes:

AC1210FR-07255RL (YAGEO): Upgrade substitute with 0.5W power rating and automotive AEC-Q200 certification.

ERJ-14NF2550U (Panasonic Electronic Components): Similar substitute with 0.5W power rating and automotive AEC-Q200 certification; product status is Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: RC3225F2550CS (Samsung Electro-Mechanics)

Use the original RC3225F2550CS when the application does not require automotive qualification and standard industrial compliance is sufficient. This part maintains active production status with established supply availability.

Upgrade Selection: AC1210FR-07255RL (YAGEO)

Select AC1210FR-07255RL as the preferred substitute when:

• Automotive AEC-Q200 certification is required
• Higher power dissipation capability (0.5W vs. 0.333W) provides thermal margin
• Active production status ensures long-term availability
• Inventory levels support production volume requirements

Alternative Selection: ERJ-14NF2550U (Panasonic Electronic Components)

ERJ-14NF2550U is electrically and mechanically equivalent with automotive AEC-Q200 certification and highest inventory availability (17860 units). However, this part carries "Not For New Designs" status, indicating end-of-life trajectory. Use only for:

• Replacement or repair of existing assemblies
• Legacy system maintenance where design continuity is required
• Applications where immediate high-volume availability is critical and long-term supply is not a constraint

Compliance Verification:

All three parts meet ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity requirements. No additional environmental or regulatory screening is necessary for standard industrial applications.

Frequently Asked Questions (FAQ)

Q: Can AC1210FR-07255RL directly replace RC3225F2550CS in my circuit?

A: Yes. Both parts share identical electrical specifications (255 Ohms ±1%, ±100ppm/°C, -55°C to 155°C operating range) and mechanical compatibility (1210 package, 2 terminations, thick film composition). The AC1210FR-07255RL provides higher power rating (0.5W vs. 0.333W), which is a functional upgrade with no negative impact on circuit performance.

Q: What is the difference between the three substitute options?

A: RC3225F2550CS is the baseline industrial-grade part. AC1210FR-07255RL adds automotive AEC-Q200 certification and higher power rating while maintaining active production. ERJ-14NF2550U offers identical electrical and mechanical specifications with AEC-Q200 certification but is marked "Not For New Designs," indicating obsolescence planning.

Q: Can I use ERJ-14NF2550U for new product designs?

A: ERJ-14NF2550U is electrically and mechanically compatible but carries "Not For New Designs" status. For new designs, use RC3225F2550CS or AC1210FR-07255RL to ensure long-term supply continuity and manufacturer support.

Q: Does the higher power rating of AC1210FR-07255RL affect PCB layout or thermal management?

A: No. Both parts use identical 1210 (3225 Metric) package dimensions and footprint. The higher power rating of AC1210FR-07255RL (0.5W vs. 0.333W) represents improved thermal capability within the same physical envelope, requiring no PCB layout modifications.

Q: Are there any moisture sensitivity or environmental compliance differences?

A: All three parts share MSL 1 (Unlimited) moisture sensitivity level, ROHS3 compliance, and REACH unaffected status. No differences in handling, storage, or environmental qualification exist among the three options.

Q: Which part should I specify for automotive applications?

A: For automotive applications requiring AEC-Q200 certification, specify AC1210FR-07255RL (active production) or ERJ-14NF2550U (end-of-life). The RC3225F2550CS lacks automotive certification and is not suitable for automotive qualification requirements.

Q: What is the tolerance and temperature coefficient match across all three parts?

A: All three parts are identical: ±1% tolerance and ±100ppm/°C temperature coefficient. These parameters are critical for substitution eligibility and are matched exactly across RC3225F2550CS, AC1210FR-07255RL, and ERJ-14NF2550U.