RCS0603F301CS Equivalent & Substitute Parts

Part Overview

The RCS0603F301CS is a 300 Ohm ±1% thick film chip resistor rated at 0.05W (1/20W) in a 0201 (0603 Metric) surface mount package. This component is manufactured by Samsung Electro-Mechanics and features anti-sulfur and moisture-resistant properties. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

RCS0603F301CS

Samsung Electro-MechanicsIn Stock: 985RCS0603F301CS Datasheet

Current PartRFQ

RC0603F301CS

Samsung Electro-MechanicsIn Stock: 808RC0603F301CS Datasheet

SimilarRFQ

MCR006YRTF3000

Rohm SemiconductorIn Stock: 1184MCR006YRTF3000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS0603F301CS is determined by strict equivalence across the following parameters:

• Resistance Value: 300 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±250ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All identified substitute parts meet these criteria. Packaging format (Cut Tape vs. Tape & Reel) and specific feature sets (anti-sulfur coating) do not preclude substitution when all electrical and mechanical parameters are equivalent.

Parameter Comparison

Engineering Selection Recommendations

RC0603F301CS is the primary substitute for RCS0603F301CS. Both parts are manufactured by Samsung Electro-Mechanics and share identical electrical specifications. RC0603F301CS holds active product status, ensuring continued availability and supply chain stability. The only material difference is packaging format (Tape & Reel versus Cut Tape) and a negligible seated height variance of 0.01mm (0.25mm vs. 0.26mm), which does not affect circuit performance or PCB assembly compatibility.

MCR006YRTF3000 is a secondary substitute manufactured by Rohm Semiconductor. This part meets all electrical and mechanical equivalence criteria and is available in both Cut Tape and Digi-Reel packaging formats. However, MCR006YRTF3000 is also discontinued at DiGi Electronics. This part is suitable for applications where Samsung Electro-Mechanics sourcing is not required and where existing Rohm Semiconductor supply chains are established.

For new designs and ongoing production, RC0603F301CS is the recommended primary selection due to active product status and manufacturer continuity with the original RCS0603F301CS design.

Frequently Asked Questions (FAQ)

Q: Can RC0603F301CS be used as a direct replacement for RCS0603F301CS?

A: Yes. RC0603F301CS is a direct electrical and mechanical equivalent. Both parts share identical resistance (300 Ohms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±250ppm/°C), operating range (-55°C ~ 125°C), and compliance certifications (ROHS3, MSL 1). The seated height difference of 0.01mm is within standard PCB assembly tolerances.

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

A: Cut Tape (CT) packaging provides resistors in individual strips suitable for small-quantity applications and manual assembly. Tape & Reel (TR) packaging provides components on continuous reels optimized for high-volume automated assembly. Both formats contain identical components; the difference is in delivery and handling format only.

Q: Are there any feature differences between RCS0603F301CS and RC0603F301CS?

A: RCS0603F301CS includes anti-sulfur coating in addition to moisture resistance. RC0603F301CS provides moisture resistance without the anti-sulfur feature. For applications requiring anti-sulfur protection, this distinction should be evaluated against specific environmental requirements.

Q: Why is RCS0603F301CS discontinued?

A: Product discontinuation is determined by manufacturer and distributor decisions based on market demand and product line rationalization. RC0603F301CS remains active and serves the same functional requirements.

Q: Can MCR006YRTF3000 be substituted in designs originally specified for RCS0603F301CS?

A: Yes. MCR006YRTF3000 meets all electrical and mechanical equivalence parameters. However, this part is also discontinued at DiGi Electronics. Substitution is technically valid but may present long-term supply chain challenges.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: Are there dimensional constraints for 0201 package substitution?

A: All three parts share identical length and width dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm). Seated height varies minimally (0.25mm to 0.26mm), which is within standard PCB assembly specifications and does not affect component placement or solder joint integrity.