RC3225F34R0CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F34R0CS is a 34 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format with 0.333W power rating. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is designed for general-purpose applications requiring precision resistive elements with moisture resistance in compact surface-mount configurations. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the 1210 package family.

Key Parameters

Parameter	Value	Specification Type
Resistance Value	34 Ohms	Electrical
Tolerance	±1%	Electrical
Power Rating	0.333W (1/3W)	Electrical
Package / Case	1210 (3225 Metric)	Mechanical
Composition	Thick Film	Material
Temperature Coefficient	±100ppm/°C	Electrical
Operating Temperature Range	-55°C ~ 155°C	Environmental
Moisture Resistance	Yes	Feature
RoHS Status	ROHS3 Compliant	Compliance
MSL Rating	1 (Unlimited)	Environmental

Substitute Part Grouping Explanation

Substitute parts for the RC3225F34R0CS are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Matching Criteria:

Resistance value: 34 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Package format: 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)
RoHS compliance: ROHS3 Compliant (exact match required)

Secondary Compatibility Factors:

Power rating: Substitute parts may have equal or higher power ratings (0.5W acceptable for 0.333W applications)
Moisture resistance: Feature present in all identified substitutes
MSL rating: All substitutes maintain MSL 1 (Unlimited)
Mechanical dimensions: Minor variations within 1210 package specification are acceptable

Substitutes are grouped into two categories: Upgrade substitutes (higher power rating) and Similar substitutes (equivalent specifications). All identified parts maintain electrical performance equivalence and mechanical interchangeability within the 1210 package footprint.

Parameter Comparison

Parameter	RC3225F34R0CS (Samsung)	AC1210FR-0734RL (YAGEO)	ERJ-14NF34R0U (Panasonic)	RMCF1210FT34R0 (Stackpole)
Manufacturer	Samsung Electro-Mechanics	YAGEO	Panasonic Electronic Components	Stackpole Electronics Inc
Resistance	34 Ohms	34 Ohms	34 Ohms	34 Ohms
Tolerance	±1%	±1%	±1%	±1%
Power Rating	0.333W (1/3W)	0.5W (1/2W)	0.5W (1/2W)	0.5W (1/2W)
Package	1210 (3225 Metric)	1210 (3225 Metric)	1210 (3225 Metric)	1210 (3225 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Moisture Resistant	Yes	Yes	No	Yes
AEC-Q200 Rated	No	Yes	Yes	Yes
Product Status	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Size / Dimension	0.126" L x 0.100" W (3.20mm x 2.55mm)	0.122" L x 0.102" W (3.10mm x 2.60mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)	0.026" (0.66mm)	0.024" (0.60mm)	0.028" (0.70mm)	0.028" (0.70mm)

Engineering Selection Recommendations

AC1210FR-0734RL (YAGEO) - Upgrade Substitute: This part is recommended as the primary upgrade substitute. It maintains all critical electrical parameters (34 Ohms, ±1% tolerance, ±100ppm/°C temperature coefficient, -55°C ~ 155°C operating range) while providing increased power rating (0.5W vs. 0.333W). The component carries AEC-Q200 automotive qualification and ROHS3 compliance. Active product status ensures continued availability. Mechanical compatibility is confirmed within 1210 package specifications.

ERJ-14NF34R0U (Panasonic) - Similar Substitute: This part provides electrical equivalence with identical resistance, tolerance, and temperature characteristics. AEC-Q200 automotive qualification is present. However, product status is classified as "Not For New Designs," indicating this part is in mature/declining phase. Use is acceptable for existing design maintenance or legacy system support only. Mechanical dimensions fall within 1210 package tolerance.

RMCF1210FT34R0 (Stackpole Electronics Inc) - Similar Substitute: This part delivers full electrical equivalence with 34 Ohms, ±1% tolerance, and matching temperature coefficient. AEC-Q200 automotive qualification and ROHS3 compliance are confirmed. Active product status supports long-term availability. Mechanical compatibility is maintained within 1210 package specifications. Cut Tape packaging is available.

All three substitute parts are mechanically interchangeable with the RC3225F34R0CS on standard 1210 footprints. Selection between substitutes should prioritize Active product status for new designs and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can AC1210FR-0734RL replace RC3225F34R0CS in existing designs?

A: Yes. AC1210FR-0734RL is mechanically and electrically compatible. The higher power rating (0.5W vs. 0.333W) provides additional thermal margin without affecting circuit performance. All electrical parameters match exactly: 34 Ohms, ±1% tolerance, ±100ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. Footprint compatibility is confirmed for 1210 package applications.

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

A: All three substitutes (AC1210FR-0734RL, ERJ-14NF34R0U, RMCF1210FT34R0) provide identical electrical performance with 34 Ohms ±1% and matching temperature characteristics. Primary differences are: (1) AC1210FR-0734RL and RMCF1210FT34R0 have Active product status; ERJ-14NF34R0U is Not For New Designs. (2) All three carry AEC-Q200 automotive qualification. (3) Packaging formats differ: AC1210FR-0734RL uses Tape & Reel; RMCF1210FT34R0 uses Cut Tape; ERJ-14NF34R0U uses Tape & Reel.

Q: Are there mechanical compatibility concerns with substitute parts?

A: No. All substitute parts use the 1210 (3225 Metric) package format with compatible mechanical dimensions. Dimensional variations are within standard 1210 package tolerance: length ranges 0.122" to 0.126" (3.10mm to 3.20mm), width ranges 0.098" to 0.102" (2.50mm to 2.60mm), height ranges 0.024" to 0.028" (0.60mm to 0.70mm). Standard 1210 PCB footprints accommodate all parts without modification.

Q: Which substitute should be selected for new designs?

A: For new designs, select either AC1210FR-0734RL (YAGEO) or RMCF1210FT34R0 (Stackpole Electronics Inc). Both maintain Active product status, ensuring long-term availability and supply chain stability. ERJ-14NF34R0U is classified as "Not For New Designs" and should be reserved for legacy system support only.

Q: Do all substitutes maintain moisture resistance?

A: AC1210FR-0734RL and RMCF1210FT34R0 explicitly specify moisture resistance. ERJ-14NF34R0U does not list moisture resistance as a feature. For applications requiring moisture-resistant components, AC1210FR-0734RL or RMCF1210FT34R0 are preferred selections.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All three substitute parts (AC1210FR-0734RL, ERJ-14NF34R0U, RMCF1210FT34R0) carry ROHS3 Compliant certification, matching the RC3225F34R0CS compliance status.

Q: What is the significance of AEC-Q200 qualification on substitute parts?

A: AEC-Q200 is an automotive industry qualification standard. All three substitute parts carry this certification, indicating suitability for automotive and high-reliability applications. The original RC3225F34R0CS does not list AEC-Q200 qualification, making the substitutes suitable for automotive designs requiring this standard.

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