RC0603J304CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J304CS is a 300 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in a 0201 (0603 Metric) surface mount package. This component is classified as Active product status with 808 pieces currently in stock. The part is designed for applications requiring moisture-resistant thick film construction with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package type, dimensions, termination count) within the 0201 form factor. Substitutes are categorized by tolerance grade and manufacturer availability.

Substiute Parts

RC0603J304CS

Samsung Electro-MechanicsIn Stock: 897RC0603J304CS Datasheet

Current PartRFQ

CRCW0201300KFKED

Vishay DaleIn Stock: 6598CRCW0201300KFKED Datasheet

UpgradeRFQ

MCR006YRTJ304

Rohm SemiconductorIn Stock: 3126MCR006YRTJ304 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC0603J304CS are identified through strict parameter matching across electrical and mechanical specifications. The substitution logic is based on the following allowed parameters:

Primary Matching Criteria:

• Resistance value: 300 kOhms (exact match required)
• Package type: 0201 (0603 Metric) (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Composition: Thick Film (exact match required)
• Termination count: 2 (exact match required)

Secondary Compatibility Parameters:

• Tolerance: ±5% or tighter (±1% acceptable as upgrade)
• Operating temperature range: -55°C minimum and 125°C minimum
• Temperature coefficient: ±250ppm/°C or better
• RoHS3 compliance required
• MSL 1 (Unlimited) preferred

Substitutes are grouped into two categories:

Upgrade Substitute: CRCW0201300KFKED (Vishay Dale) — Tighter tolerance (±1%) with improved temperature coefficient (±100ppm/°C) and extended upper operating temperature (155°C).

Similar Substitute: MCR006YRTJ304 (Rohm Semiconductor) — Identical electrical specifications (±5% tolerance, ±250ppm/°C) with matching operating temperature range, but discontinued at DiGi Electronics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MCR006YRTJ304 (Rohm Semiconductor) provides electrical and mechanical equivalence to the RC0603J304CS. Both parts share identical resistance (300 kOhms), tolerance (±5%), power rating (0.05W), temperature coefficient (±250ppm/°C), and operating temperature range (-55°C ~ 125°C). However, this part is discontinued at DiGi Electronics, limiting long-term availability.

For Upgraded Performance: CRCW0201300KFKED (Vishay Dale) is suitable when improved tolerance and temperature stability are required. This part offers ±1% tolerance (versus ±5%) and ±100ppm/°C temperature coefficient (versus ±250ppm/°C), with extended upper operating temperature to 155°C. All other parameters remain compatible. This part is Active with higher inventory (6491 pieces).

Compliance Verification: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) rating. ECCN classification is EAR99 for all parts. HTSUS code 8533.21.0030 applies uniformly.

Packaging Consideration: RC0603J304CS and CRCW0201300KFKED are supplied in Tape & Reel (TR) packaging. MCR006YRTJ304 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Verify packaging requirements for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CRCW0201300KFKED replace RC0603J304CS in any application? A: CRCW0201300KFKED is mechanically and electrically compatible with RC0603J304CS. The ±1% tolerance and improved temperature coefficient (±100ppm/°C) represent performance enhancements suitable for applications requiring tighter tolerance control. Extended operating temperature to 155°C provides additional thermal margin. Verify application requirements do not mandate the original ±5% tolerance specification.

Q: Why is MCR006YRTJ304 listed as a substitute if it is discontinued? A: MCR006YRTJ304 is included as a technical equivalent based on matching electrical specifications (300 kOhms ±5%, 0.05W, ±250ppm/°C, -55°C ~ 125°C). Discontinuation status indicates limited future availability. Current inventory of 3075 pieces may support existing stock requirements. For new designs, CRCW0201300KFKED is recommended as the active alternative.

Q: Are all substitute parts in the same 0201 package? A: Yes. RC0603J304CS, CRCW0201300KFKED, and MCR006YRTJ304 are all specified in 0201 (0603 Metric) package with identical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). Mechanical interchangeability is confirmed.

Q: What is the difference in packaging format between the main part and substitutes? A: RC0603J304CS and CRCW0201300KFKED are supplied in Tape & Reel (TR) format, standard for automated pick-and-place assembly. MCR006YRTJ304 is supplied in Cut Tape (CT) & Digi-Reel® format. Verify compatibility with your assembly equipment and supply chain requirements.

Q: Can I use CRCW0201300KFKED in applications designed for ±5% tolerance? A: Yes. CRCW0201300KFKED with ±1% tolerance is a tighter specification than the ±5% requirement. The part will perform within the original design tolerance window. No circuit redesign is required.

Q: Are all parts RoHS3 compliant? A: Yes. RC0603J304CS, CRCW0201300KFKED, and MCR006YRTJ304 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected for all parts.