RC3225J155CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225J155CS is a 1.5 MOhms ±5% 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 1102 units currently in stock. Substitute parts are identified when equivalent resistance values, package dimensions, and electrical ratings align within acceptable engineering tolerances for the application requirements.

Substiute Parts

RC3225J155CS

Samsung Electro-MechanicsIn Stock: 1195RC3225J155CS Datasheet

Current PartRFQ

RMCF1210FT1M50

Stackpole Electronics IncIn Stock: 1152RMCF1210FT1M50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225J155CS is determined by the following critical parameters:

Mandatory Matching Criteria:

• Resistance value: 1.5 MOhms
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS3 Compliance

Allowable Variations:

• Tolerance: May be tighter (lower value acceptable)
• Power rating: May be equal or higher
• Packaging format: Tape & Reel acceptable for equivalent component

The RMCF1210FT1M50 from Stackpole Electronics Inc qualifies as a substitute based on matching resistance, package dimensions, composition, temperature specifications, and regulatory compliance. The substitute exhibits improved tolerance (±1% versus ±5%) and higher power rating (0.5W versus 0.333W), both of which are acceptable enhancements for component substitution.

Parameter Comparison

Engineering Selection Recommendations

The RMCF1210FT1M50 is a qualified substitute for the RC3225J155CS based on electrical and mechanical parameter alignment. Both components are Active status products with current inventory availability. The substitute part offers enhanced specifications through tighter tolerance (±1% versus ±5%) and higher power dissipation capability (0.5W versus 0.333W), which provide design margin without introducing incompatibility.

Both parts maintain identical temperature coefficient performance, operating temperature range, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected, EAR99 classification). Physical dimensions are functionally equivalent within standard PCB assembly tolerances. The Stackpole component includes AEC-Q200 automotive qualification, which represents an additional quality assurance level applicable to general industrial and commercial applications.

Selection between these parts should be based on application-specific requirements for tolerance precision and power dissipation margin, as well as supplier availability and procurement lead times.

Frequently Asked Questions (FAQ)

Q: Can the RMCF1210FT1M50 be used as a direct replacement for the RC3225J155CS?

A: Yes. Both components share identical resistance value (1.5 MOhms), package format (1210/3225 Metric), composition (Thick Film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The substitute exhibits tighter tolerance and higher power rating, both acceptable for substitution.

Q: What are the key differences between these two parts?

A: The primary differences are tolerance specification (±1% versus ±5%), power rating (0.5W versus 0.333W), and packaging format (Tape & Reel versus standard packaging). The Stackpole component includes AEC-Q200 automotive qualification. Physical dimensions vary slightly (2.50mm versus 2.55mm width; 0.70mm versus 0.66mm height maximum), remaining within standard assembly tolerances.

Q: Are there any thermal performance differences?

A: Both components operate across -55°C to 155°C with identical temperature coefficient (±100ppm/°C). The RMCF1210FT1M50 has higher power dissipation capability (0.5W), which may provide improved thermal margin in power-limited applications.

Q: Does the substitute part meet the same compliance requirements?

A: Yes. Both components are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Moisture Sensitivity Level is identical (1 - Unlimited) for both parts.

Q: Are there any PCB layout considerations when substituting these parts?

A: Physical dimensions are functionally equivalent. The substitute is 0.05mm narrower and 0.04mm taller in maximum seated height. These variations fall within standard PCB assembly and component placement tolerances and do not require layout modification.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. The RMCF1210FT1M50 offers tighter tolerance and higher power rating with AEC-Q200 qualification. The RC3225J155CS may be preferred if the ±5% tolerance and 0.333W rating are sufficient and if Samsung sourcing is preferred.