RC3225F180CS Equivalent & Substitute Parts

Part Overview

The RC3225F180CS is an 18 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 a moisture-resistant design 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 rating, making it suitable for general industrial and commercial applications. Equivalent and substitute parts are identified based on matching electrical specifications, package dimensions, and compliance certifications.

Substiute Parts

RC3225F180CS

Samsung Electro-MechanicsIn Stock: 784RC3225F180CS Datasheet

Current PartRFQ

KTR25JZPF18R0

Rohm SemiconductorIn Stock: 1138KTR25JZPF18R0 Datasheet

DirectRFQ

ERJ-14NF18R0U

Panasonic Electronic ComponentsIn Stock: 33953ERJ-14NF18R0U Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3225F180CS are qualified based on the following criteria:

Direct Electrical Match: Resistance value of 18 Ohms with ±1% tolerance, temperature coefficient of ±100ppm/°C, and operating temperature range of -55°C to 155°C.

Package Compatibility: 1210 (3225 Metric) package format with two terminations and maximum seated height of 0.026" to 0.028" (0.65mm to 0.70mm).

Composition & Construction: Thick film resistor technology.

Compliance Requirements: ROHS3 compliance, MSL 1 rating, and REACH unaffected status.

Two substitute parts meet these criteria with variations in power rating and automotive qualification:

KTR25JZPF18R0 (Rohm Semiconductor) – Direct equivalent with identical 0.333W power rating and automotive AEC-Q200 qualification.

ERJ-14NF18R0U (Panasonic Electronic Components) – Upgrade option with higher 0.5W power rating and automotive AEC-Q200 qualification, though marked as Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Active Product Status): The KTR25JZPF18R0 from Rohm Semiconductor is the primary equivalent. It maintains identical electrical specifications, power rating, and package dimensions while adding automotive AEC-Q200 qualification. Both the RC3225F180CS and KTR25JZPF18R0 are Active products suitable for new designs.

For Upgraded Power Handling: The ERJ-14NF18R0U from Panasonic provides a higher 0.5W power rating within the same 1210 package, offering additional thermal margin. However, this part is marked as Not For New Designs and should only be considered for legacy system maintenance or where higher power dissipation is required in existing applications.

Compliance Considerations: All three parts meet ROHS3 compliance, MSL 1 rating, and REACH unaffected status. The Rohm and Panasonic options include automotive AEC-Q200 qualification, which may be required for automotive or high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can KTR25JZPF18R0 be used as a direct drop-in replacement for RC3225F180CS?

A: Yes. Both parts share identical resistance (18 Ohms ±1%), power rating (0.333W), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and 1210 package format. Dimensional differences are minimal (width 0.100" vs 0.098", height 0.026" for both), and both are Active products with ROHS3 compliance.

Q: When should ERJ-14NF18R0U be considered?

A: The ERJ-14NF18R0U offers a higher 0.5W power rating in the same package, providing additional thermal headroom for applications with higher power dissipation requirements. However, its Not For New Designs status restricts it to replacement or legacy applications only.

Q: Are there dimensional compatibility concerns?

A: The RC3225F180CS has a width of 0.100" (2.55mm) compared to 0.098" (2.50mm) for both substitute parts. This 0.002" difference is within typical PCB layout tolerances for 1210 components. Height differences (0.026" to 0.028") are also negligible for standard applications.

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

A: AEC-Q200 is an automotive qualification standard. The KTR25JZPF18R0 and ERJ-14NF18R0U include this certification, making them suitable for automotive and high-reliability applications where this qualification is required. The RC3225F180CS does not carry this designation.

Q: Are all three parts ROHS3 compliant?

A: Yes. The RC3225F180CS, KTR25JZPF18R0, and ERJ-14NF18R0U are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH unaffected status.