RC3225F34R8CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F34R8CS is a 34.8 Ohm ±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 with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with 1131 units currently in stock.

Equivalent and substitute parts are identified when design requirements permit tolerance of specific parameter variations while maintaining functional compatibility within the 1210 package footprint and core electrical specifications.

Substiute Parts

RC3225F34R8CS

Samsung Electro-MechanicsIn Stock: 1236RC3225F34R8CS Datasheet

Current PartRFQ

ERJ-14NF34R8U

Panasonic Electronic ComponentsIn Stock: 11278ERJ-14NF34R8U Datasheet

SimilarRFQ

RMCF1210FT34R8

Stackpole Electronics IncIn Stock: 9611RMCF1210FT34R8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3225F34R8CS are qualified based on the following criteria:

Mandatory Matching Parameters:

• Resistance value: 34.8 Ohms
• Tolerance: ±1%
• Package / Case: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Power Rating: Substitutes may have equal or higher power dissipation ratings (0.5W / 1/2W acceptable for 0.333W / 1/3W applications)
• Product Status: Active or Not For New Designs
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) acceptable for equivalent electrical function

Substitutes identified in this reference maintain identical electrical performance and mechanical compatibility while accommodating higher power ratings and alternative packaging configurations.

Parameter Comparison

Engineering Selection Recommendations

RC3225F34R8CS (Samsung Electro-Mechanics) - Primary Selection

The RC3225F34R8CS maintains Active product status and is recommended for new designs requiring the specified 0.333W power rating. This part is currently in stock with 1131 units available. Selection of this part ensures continuity with established supply chains and design validation.

ERJ-14NF34R8U (Panasonic Electronic Components) - Secondary Selection

The ERJ-14NF34R8U is qualified as an equivalent substitute with the following considerations: Product status is listed as Not For New Designs, indicating this part is in mature or declining production phase. However, electrical and mechanical parameters are fully compatible. The higher 0.5W power rating provides additional thermal margin. This part is available in Tape & Reel packaging with 11196 units in stock. AEC-Q200 automotive qualification is included.

RMCF1210FT34R8 (Stackpole Electronics Inc) - Primary Alternative

The RMCF1210FT34R8 is qualified as a direct equivalent substitute with Active product status. Electrical specifications are identical to the main part. The 0.5W power rating accommodates applications with higher thermal requirements. This part is available in Cut Tape packaging with 9546 units in stock. AEC-Q200 automotive qualification is included.

Selection Basis:

• All three parts meet mandatory electrical and mechanical compatibility criteria
• Dimensional variations (width and height) are within acceptable tolerances for 1210 package footprint
• All parts maintain ROHS3 compliance and MSL 1 rating
• Power rating elevation (0.333W to 0.5W) is acceptable for direct substitution in applications not requiring the lower power specification
• Packaging format selection (Tape & Reel vs. Cut Tape) depends on assembly process requirements

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF34R8U be used as a direct replacement for RC3225F34R8CS?

A: Yes. The ERJ-14NF34R8U meets all mandatory electrical parameters: 34.8 Ohms ±1%, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and 1210 package format. The higher 0.5W power rating is compatible with applications designed for 0.333W. The "Not For New Designs" status indicates production phase, not functional incompatibility.

Q: Can RMCF1210FT34R8 be used as a direct replacement for RC3225F34R8CS?

A: Yes. The RMCF1210FT34R8 is electrically and mechanically equivalent with identical resistance, tolerance, temperature coefficient, and operating range. Active product status and higher 0.5W power rating make this part suitable for direct substitution.

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

A: The 0.5W rating indicates higher thermal dissipation capability. In applications where the RC3225F34R8CS is specified at 0.333W, substitution with a 0.5W-rated part is functionally compatible and provides additional thermal margin. The reverse substitution (0.5W part replaced with 0.333W part) is not recommended without thermal analysis.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist. The RC3225F34R8CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with 0.026" maximum seated height. The ERJ-14NF34R8U and RMCF1210FT34R8 measure 0.126" L x 0.098" W (3.20mm x 2.50mm) with 0.028" maximum seated height. These variations remain within 1210 package tolerance and do not affect PCB footprint compatibility.

Q: What packaging formats are available?

A: RC3225F34R8CS packaging format is not specified in available data. ERJ-14NF34R8U is supplied in Tape & Reel (TR) format. RMCF1210FT34R8 is supplied in Cut Tape (CT) format. Packaging selection depends on assembly process requirements and volume specifications.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.

Q: Which part should be selected for new designs?

A: For new designs, either RC3225F34R8CS (Active status, Samsung) or RMCF1210FT34R8 (Active status, Stackpole) are recommended. Both maintain Active product status. The ERJ-14NF34R8U is available as a secondary option despite "Not For New Designs" status, as it remains functionally equivalent and in stock.