RC3225F1651CS Equivalent & Substitute Parts

Part Overview

The RC3225F1651CS is a 1.65 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 is designed for general-purpose applications requiring moisture-resistant construction. The part maintains Active product status with 844 units currently in stock.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative specifications within acceptable electrical and mechanical tolerances. The RC3225F1651CS has been identified with one qualified substitute that maintains critical electrical parameters while offering different operational characteristics.

Substiute Parts

RC3225F1651CS

Samsung Electro-MechanicsIn Stock: 884RC3225F1651CS Datasheet

Current PartRFQ

ERJ-14NF1651U

Panasonic Electronic ComponentsIn Stock: 10786ERJ-14NF1651U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F1651CS is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 1.65 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Allowable Variation Parameters:

• Power Rating: Substitute parts may exceed the 0.333W specification, provided the higher rating does not introduce incompatibility with circuit design constraints
• Physical Dimensions: Minor variations within supplier device package specifications are acceptable
• Product Status: Substitutes may have different product status classifications
• Packaging Format: Variations in tape & reel or bulk packaging do not affect electrical compatibility

The ERJ-14NF1651U meets all mandatory matching criteria while providing an increased power rating of 0.5W (1/2W), making it a valid substitute for applications where the higher power dissipation capacity does not create design conflicts.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (RC3225F1651CS): The RC3225F1651CS maintains Active product status and is the preferred selection for new designs. This component is currently in stock with 844 units available. The Active status ensures continued manufacturer support and long-term availability. Selection of this part is recommended for applications where supply continuity and design longevity are priorities.

Substitute Component (ERJ-14NF1651U): The ERJ-14NF1651U is classified as "Not For New Designs" by Panasonic Electronic Components. This designation indicates the part is available for existing design support and replacement applications only. The substitute is suitable for:

• Replacement of failed components in fielded equipment
• Continuation of existing production runs where design changes are not feasible
• Applications where the increased 0.5W power rating provides additional design margin

The ERJ-14NF1651U carries AEC-Q200 automotive qualification, which provides additional reliability assurance for applications requiring automotive-grade components. Both parts maintain ROHS3 compliance and identical electrical specifications for resistance, tolerance, and temperature coefficient.

Compliance Considerations: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The identical Moisture Sensitivity Level (MSL 1 - Unlimited) ensures equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-14NF1651U be used as a direct replacement for the RC3225F1651CS in existing designs?

A: Yes, the ERJ-14NF1651U meets all mandatory electrical and mechanical parameters. The increased power rating (0.5W vs. 0.333W) does not create incompatibility. However, verify that circuit board layout and thermal management accommodate the slightly increased height (0.028" vs. 0.026" maximum seated height).

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF1651U?

A: This designation indicates Panasonic has discontinued active development and marketing of this part for new applications. The component remains available for existing design support and field replacements. For new designs, the RC3225F1651CS (Active status) is the recommended selection.

Q: Are there dimensional differences that would affect PCB layout?

A: Dimensional variations are minimal. The ERJ-14NF1651U is 0.002" (0.05mm) narrower and 0.002" (0.04mm) taller than the RC3225F1651CS. These differences fall within standard PCB tolerance stackups and do not require layout modifications for standard 1210 footprints.

Q: Does the higher power rating of the ERJ-14NF1651U affect circuit performance?

A: No. The higher power rating (0.5W vs. 0.333W) is a component capability specification. It does not alter electrical performance in the circuit. The resistance value, tolerance, and temperature coefficient remain identical, ensuring equivalent circuit behavior.

Q: What is the inventory status for each part?

A: RC3225F1651CS: 844 units in stock (Active status). ERJ-14NF1651U: 10,771 units in stock (Not For New Designs status). The higher inventory of the substitute reflects its legacy status and continued availability for replacement applications.

Q: Are both parts suitable for the -55°C ~ 155°C operating temperature range?

A: Yes. Both components are rated for identical operating temperature ranges and maintain the same ±100ppm/°C temperature coefficient across this range.

Q: What packaging formats are available?

A: RC3225F1651CS is supplied in standard packaging (format not specified in available data). ERJ-14NF1651U is supplied in Tape & Reel (TR) format. Confirm packaging requirements with your procurement specification before ordering.