RC3225F1743CS Equivalent & Substitute Parts

Part Overview

The RC3225F1743CS is a 174 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 operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications. The RC3225F1743CS has documented substitute availability through Panasonic Electronic Components.

Substiute Parts

RC3225F1743CS

Samsung Electro-MechanicsIn Stock: 1114RC3225F1743CS Datasheet

Current PartRFQ

ERJ-14NF1743U

Panasonic Electronic ComponentsIn Stock: 18649ERJ-14NF1743U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F1743CS is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 174 kOhms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Number of terminations: 2
• RoHS3 compliance

Allowable Variation:

• Power rating: Substitute parts may exceed the 0.333W specification, provided the package dimensions remain compatible with 1210 form factor constraints
• Moisture sensitivity level: MSL 1 rating is maintained across all qualified substitutes
• Packaging format: Original component uses standard packaging; substitutes may be supplied in alternative packaging configurations (Tape & Reel) without affecting electrical or mechanical compatibility

The ERJ-14NF1743U from Panasonic Electronic Components qualifies as a direct substitute based on these criteria, with the exception of elevated power rating (0.5W vs. 0.333W), which represents a design margin improvement rather than a compatibility limitation.

Parameter Comparison

Engineering Selection Recommendations

RC3225F1743CS (Samsung Electro-Mechanics): This component maintains Active product status, indicating continued manufacturer support and long-term availability. Selection is appropriate for new designs requiring sustained supply chain reliability and manufacturer backing.

ERJ-14NF1743U (Panasonic Electronic Components): This substitute carries "Not For New Designs" status, indicating the manufacturer has discontinued active development and support for this part number. The ERJ-14NF1743U is suitable for legacy system maintenance, repair operations, and design revisions where existing inventory must be replaced. The elevated power rating (0.5W vs. 0.333W) provides additional thermal margin in applications where the original specification is met or exceeded.

Both components satisfy RoHS3 compliance and MSL 1 moisture sensitivity requirements. Dimensional variations between the two parts (width: 2.55mm vs. 2.50mm; height: 0.66mm vs. 0.70mm) remain within 1210 package tolerance bands and do not affect PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1743U replace RC3225F1743CS in new product designs?

A: The ERJ-14NF1743U carries "Not For New Designs" status from Panasonic. For new designs, the RC3225F1743CS is the appropriate selection due to its Active product status and manufacturer support commitment.

Q: What is the significance of the power rating difference (0.333W vs. 0.5W)?

A: The ERJ-14NF1743U power rating of 0.5W exceeds the RC3225F1743CS specification of 0.333W. This represents a design margin improvement and does not create compatibility issues. The substitute can dissipate higher power levels without thermal degradation, making it suitable for applications where the original specification is met or exceeded.

Q: Are the dimensional differences between these parts significant?

A: Dimensional variations are minimal and fall within 1210 package tolerance specifications. Length remains identical at 3.20mm. Width differs by 0.05mm (2.55mm vs. 2.50mm) and height by 0.04mm (0.66mm vs. 0.70mm). These variations do not affect PCB layout compatibility or component placement.

Q: Do both parts meet the same compliance standards?

A: Both RC3225F1743CS and ERJ-14NF1743U are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. Compliance profiles are equivalent across regulatory requirements.

Q: What packaging formats are available for these parts?

A: RC3225F1743CS is supplied in standard packaging. ERJ-14NF1743U is available in Tape & Reel (TR) format. Packaging format does not affect electrical or mechanical performance; selection depends on assembly process requirements and inventory management preferences.

Q: Can these parts be used interchangeably in existing assemblies?

A: Electrical and mechanical compatibility is confirmed for both parts. Interchangeability in existing assemblies is supported by matching resistance value, tolerance, package format, and operating temperature range. Verification of specific application requirements remains the responsibility of the design engineer.