RC3225F1912CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F1912CS is a 19.1 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the same resistance value, tolerance, package footprint, and operating temperature range. The primary substitute identified is the ERJ-14NF1912U from Panasonic Electronic Components, which shares the same resistance specification and package dimensions while offering higher power rating and automotive qualification.

Substiute Parts

RC3225F1912CS

Samsung Electro-MechanicsIn Stock: 966RC3225F1912CS Datasheet

Current PartRFQ

ERJ-14NF1912U

Panasonic Electronic ComponentsIn Stock: 6214ERJ-14NF1912U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC3225F1912CS is based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Resistance value: 19.1 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 1210 (3225 Metric) (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match or better)
• Operating temperature range: -55°C ~ 155°C (must encompass or exceed)
• Composition: Thick Film (same technology)
• Number of terminations: 2 (standard chip resistor configuration)

Power Rating Consideration: The RC3225F1912CS is rated at 0.333W. Substitute parts may have equal or higher power ratings without affecting substitution validity, as higher ratings provide additional thermal margin in the application circuit.

Compliance Considerations: The main part is RoHS3 compliant. Substitutes with different RoHS status require evaluation based on application regulatory requirements.

The identified substitute ERJ-14NF1912U meets all primary electrical criteria and shares identical package dimensions, making it a valid substitute despite differences in power rating (0.5W vs. 0.333W) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

For Active Product Designs: The RC3225F1912CS is the primary selection for new designs due to its Active product status and RoHS3 compliance. This part maintains full regulatory alignment and manufacturer support for ongoing production.

For Substitute Selection: The ERJ-14NF1912U from Panasonic is electrically and mechanically compatible with the RC3225F1912CS. However, the following conditions apply:

• Product Status: ERJ-14NF1912U is marked "Not For New Designs," indicating Panasonic has discontinued active support. This substitute is suitable only for legacy system maintenance, repair, or replacement scenarios where the original part is unavailable.

• RoHS Compliance: The ERJ-14NF1912U is RoHS non-compliant, whereas the main part is RoHS3 compliant. Applications subject to RoHS regulations (EU, China, and other jurisdictions) cannot use this substitute without regulatory review.

• Power Rating Advantage: The ERJ-14NF1912U provides 0.5W rating versus 0.333W for the main part. This higher rating offers improved thermal performance in applications operating near maximum power dissipation limits.

• Automotive Qualification: The ERJ-14NF1912U carries AEC-Q200 automotive qualification, making it suitable for automotive applications where the main part may not be specified.

Selection Logic:

• Use RC3225F1912CS for new designs and RoHS-regulated applications
• Use ERJ-14NF1912U only for legacy system support where RC3225F1912CS is unavailable and RoHS compliance is not required

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1912U be used as a direct replacement for RC3225F1912CS in all applications?

A: Electrical and mechanical compatibility exists for the same circuit function. However, regulatory and product status differences require application-specific evaluation. RoHS-regulated applications cannot use ERJ-14NF1912U. New designs should use RC3225F1912CS.

Q: What does "Not For New Designs" mean for the ERJ-14NF1912U?

A: This designation indicates Panasonic has transitioned this part to end-of-life status and no longer actively supports new design implementations. The part remains available from existing inventory but receives no further development or qualification updates. Use is restricted to legacy system maintenance.

Q: Are the physical dimensions compatible between these two parts?

A: Yes. Both parts use the 1210 (3225 Metric) package. Dimensional variations (length 3.20mm, width 2.55mm vs. 2.50mm, height 0.66mm vs. 0.70mm) are within standard PCB footprint tolerances and do not affect placement or soldering.

Q: Why does ERJ-14NF1912U have a higher power rating (0.5W vs. 0.333W)?

A: Different manufacturers use different design margins and thermal management approaches. The higher rating in the Panasonic part provides additional thermal headroom but does not change the electrical function. Both parts operate identically at the specified 0.333W dissipation level.

Q: Can I use ERJ-14NF1912U in a RoHS-compliant product?

A: No. ERJ-14NF1912U is RoHS non-compliant. Products subject to RoHS regulations (EU Directive 2011/65/EU, China RoHS, and similar standards) must use RoHS-compliant components. RC3225F1912CS is RoHS3 compliant and is the correct choice for regulated applications.

Q: What is the difference between Moisture Sensitivity Level 1 for both parts?

A: Both parts have MSL 1 (Unlimited), meaning they have unlimited shelf life without special moisture control measures. No difference in handling or storage requirements exists between these parts.

Q: Are there any temperature performance differences between these parts?

A: No. Both parts have identical temperature coefficient (±100ppm/°C) and operating range (-55°C ~ 155°C). Temperature stability and performance are equivalent.