RC0603J300CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J300CS is a 30 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0201 (0603 Metric) package format. This surface mount device is rated for 0.05W (1/20W) power dissipation and features moisture-resistant construction suitable for general-purpose electronic applications. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified to address specific application requirements where tolerance, inventory availability, or performance specifications necessitate alternative component selection.

Substiute Parts

RC0603J300CS

Samsung Electro-MechanicsIn Stock: 6525RC0603J300CS Datasheet

Current PartRFQ

RC0603F300CS

Samsung Electro-MechanicsIn Stock: 1220RC0603F300CS Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC0603J300CS are identified based on strict electrical and mechanical parameter compatibility. The primary substitution criterion is the maintenance of identical resistance value (30 Ohms), package format (0201/0603 Metric), power rating (0.05W), and physical dimensions. The RC0603F300CS qualifies as a direct substitute with the following substitution logic:

Key Parameters Determining Substitutability:

• Resistance value: 30 Ohms (identical)
• Package / Case: 0201 (0603 Metric) (identical)
• Power rating: 0.05W, 1/20W (identical)
• Physical dimensions: 0.60mm x 0.30mm (identical)
• Height - Seated (Max): 0.26mm (identical)
• Composition: Thick Film (identical)
• Temperature Coefficient: ±250ppm/°C (identical)
• Operating Temperature Range: -55°C to 125°C (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

The tolerance specification differs between the main part (±5%) and the substitute (±1%), representing an upgrade in precision capability while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

RC0603J300CS (Main Part): Suitable for applications where ±5% tolerance meets circuit requirements and cost optimization is prioritized. Active product status ensures continued availability and manufacturing support. ROHS3 compliance and MSL 1 rating support deployment in standard industrial and consumer electronics environments.

RC0603F300CS (Substitute): Applicable where tighter tolerance control (±1%) is required for precision circuit performance. The upgrade in tolerance specification does not compromise any electrical or mechanical parameters. Active product status and identical compliance certifications (ROHS3, MSL 1) ensure equivalent reliability and regulatory compliance. Selection of this substitute provides enhanced precision without modification to PCB layout, assembly processes, or thermal management strategies.

Both parts are manufactured by Samsung Electro-Mechanics within the RC series and maintain identical physical footprints, thermal characteristics, and environmental compliance ratings. Selection between these parts is determined solely by tolerance requirements of the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can RC0603F300CS be used as a direct replacement for RC0603J300CS in existing PCB designs?

A: Yes. Both parts share identical package format (0201/0603 Metric), physical dimensions (0.60mm x 0.30mm), height (0.26mm maximum), and all mechanical specifications. No PCB layout modifications are required. The RC0603F300CS provides tighter tolerance (±1% versus ±5%) without altering footprint or assembly requirements.

Q: What is the primary difference between RC0603J300CS and RC0603F300CS?

A: The tolerance specification differs. RC0603J300CS carries ±5% tolerance, while RC0603F300CS carries ±1% tolerance. All other electrical parameters (30 Ohm resistance, 0.05W power rating, ±250ppm/°C temperature coefficient, -55°C to 125°C operating range) and mechanical specifications remain identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both RC0603J300CS and RC0603F300CS are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, supporting deployment in regulated electronics manufacturing environments.

Q: What does the 0201 package designation mean?

A: The 0201 package is the metric designation for this surface mount resistor format, equivalent to 0603 in imperial measurement. Physical dimensions are 0.60mm length by 0.30mm width with maximum seated height of 0.26mm.

Q: When should RC0603F300CS be selected over RC0603J300CS?

A: RC0603F300CS should be selected when circuit design specifications require tolerance control tighter than ±5%. Applications involving precision analog circuits, reference networks, or matched resistor pairs benefit from the ±1% tolerance specification.

Q: Are there any thermal or frequency limitations that differ between these parts?

A: No. Both parts share identical temperature coefficient (±250ppm/°C) and operating temperature range (-55°C to 125°C). Thermal and frequency performance characteristics are equivalent.

Q: What is the moisture sensitivity level (MSL) for both parts?

A: Both RC0603J300CS and RC0603F300CS carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard storage and handling procedures apply without special desiccant or humidity control requirements.