RCS0603J3R9CS Equivalent & Substitute Parts

Part Overview

The RCS0603J3R9CS is a 3.9 Ohms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) package. This component is designed for high-density surface mount applications requiring anti-sulfur and moisture-resistant characteristics. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements, enabling seamless integration in production environments or field replacements.

Substiute Parts

RCS0603J3R9CS

Samsung Electro-MechanicsIn Stock: 791RCS0603J3R9CS Datasheet

Current PartRFQ

RC0603J3R9CS

Samsung Electro-MechanicsIn Stock: 10499RC0603J3R9CS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS0603J3R9CS is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 3.9 Ohms
• Tolerance: ±5%
• Power rating: 0.05W (1/20W)
• Package type: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Composition: Thick Film
• Temperature coefficient: ±300ppm/°C
• Operating temperature range: -55°C ~ 125°C
• Number of terminations: 2
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

The RC0603J3R9CS qualifies as a direct substitute based on complete alignment of all electrical specifications, physical dimensions, and compliance certifications. The primary distinction between the main part and substitute relates to packaging format (Tape & Reel versus Cut Tape) and minor feature variations (anti-sulfur coating presence), which do not affect functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The RC0603J3R9CS serves as a functionally equivalent substitute for the RCS0603J3R9CS in applications requiring a 3.9 Ohm thick film chip resistor in 0201 package format. Both components maintain Active product status and satisfy ROHS3 compliance and REACH unaffected certifications, ensuring regulatory alignment for current manufacturing and deployment environments.

Selection between the main part and substitute should be based on packaging requirements and supply chain considerations. The RCS0603J3R9CS is supplied in Tape & Reel format, suitable for automated pick-and-place assembly operations. The RC0603J3R9CS is supplied in Cut Tape format, appropriate for manual assembly, kit builds, or lower-volume production runs. The negligible difference in seated height (0.25mm versus 0.26mm) does not impact PCB layout or assembly clearance specifications for standard 0201 package applications.

Both components exhibit identical electrical performance across the specified operating temperature range (-55°C ~ 125°C) and maintain consistent resistance tolerance (±5%) and temperature coefficient (±300ppm/°C) characteristics.

Frequently Asked Questions (FAQ)

Q: Can RC0603J3R9CS replace RCS0603J3R9CS in production assembly?

A: Yes. The RC0603J3R9CS is electrically and mechanically equivalent to the RCS0603J3R9CS. Both components share identical resistance (3.9 Ohms), tolerance (±5%), power rating (0.05W), package type (0201), and operating specifications. The primary difference is packaging format: Tape & Reel versus Cut Tape. Selection depends on assembly equipment and process requirements.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for automated surface mount assembly equipment. Cut Tape packaging supplies components on shorter tape segments, suitable for manual assembly, component kits, or lower-volume production. Both formats contain identical components with no functional differences.

Q: Are the physical dimensions identical between the main part and substitute?

A: Yes. Both the RCS0603J3R9CS and RC0603J3R9CS measure 0.024" L x 0.012" W (0.60mm x 0.30mm). The seated height differs marginally: 0.25mm (main part) versus 0.26mm (substitute). This 0.01mm variation is within standard PCB assembly tolerances and does not affect component placement, solder joint formation, or circuit performance.

Q: Do both parts meet current compliance requirements?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, satisfying current regulatory requirements for electronic component manufacturing and deployment in regulated markets.

Q: What is the moisture sensitivity level for these components?

A: Both components carry MSL 1 (Unlimited) rating, indicating unlimited shelf life under standard storage conditions without moisture bake-out requirements prior to assembly.

Q: Are there any feature differences between the two parts?

A: The RCS0603J3R9CS includes anti-sulfur coating in addition to moisture resistance. The RC0603J3R9CS provides moisture resistance without the anti-sulfur feature. For applications requiring anti-sulfur protection in corrosive environments, the RCS0603J3R9CS is the specified choice. For standard applications, both parts perform identically.