RC0603J394CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J394CS is a 390 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is supplied in Tape & Reel (TR) packaging with 1161 pieces currently in stock.

Substitute parts become necessary when the primary manufacturer part experiences supply constraints, discontinuation, or when alternative sourcing provides equivalent electrical and mechanical performance within the same parameter specifications.

Substiute Parts

RC0603J394CS

Samsung Electro-MechanicsIn Stock: 1229RC0603J394CS Datasheet

Current PartRFQ

MCR006YRTJ394

Rohm SemiconductorIn Stock: 10427MCR006YRTJ394 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC0603J394CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 390 kOhms
• Tolerance: ±5%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±250ppm/°C
• Operating temperature range: -55°C to 125°C

Mechanical Parameters (Must Match Exactly):

• Package type: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height seated maximum: 0.010" (0.26mm)
• Number of terminations: 2

Compliance Parameters (Must Match or Exceed):

• RoHS3 compliance
• MSL 1 rating
• REACH unaffected status

The MCR006YRTJ394 from Rohm Semiconductor meets all substitution criteria. Although this part is discontinued at DiGi Electronics, it maintains full electrical and mechanical equivalence with the RC0603J394CS and carries identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: RC0603J394CS (Samsung Electro-Mechanics)

The RC0603J394CS maintains Active product status with confirmed inventory of 1161 pieces. This part is the preferred selection for new designs and production runs requiring immediate availability and long-term supply assurance.

Alternative Selection: MCR006YRTJ394 (Rohm Semiconductor)

The MCR006YRTJ394 provides complete electrical and mechanical equivalence with identical compliance certifications (ROHS3, MSL 1, REACH unaffected). Although this part is discontinued at DiGi Electronics, it remains suitable for applications where existing inventory is available through alternative distribution channels. The discontinuation status does not affect the technical suitability of this component for direct substitution in existing designs or legacy product support.

Both parts carry ECCN EAR99 classification and HTSUS code 8533.21.0030, indicating identical regulatory treatment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can MCR006YRTJ394 be used as a direct replacement for RC0603J394CS in production?

A: Yes. The MCR006YRTJ394 is electrically and mechanically equivalent across all specified parameters. Both parts are 390 kOhms ±5%, 0.05W thick film resistors in 0201 (0603 Metric) packages with identical temperature coefficients and operating ranges. Both carry ROHS3 compliance and MSL 1 ratings. Direct substitution is permissible from a technical standpoint.

Q: What is the significance of the discontinued status for MCR006YRTJ394?

A: Discontinuation at DiGi Electronics indicates that this part is no longer actively distributed through that specific channel. However, discontinuation does not alter the electrical or mechanical specifications of existing inventory. The part remains technically suitable for substitution where supply is available through alternative sources.

Q: Are there packaging differences between these parts?

A: The RC0603J394CS is supplied in Tape & Reel (TR) packaging, while MCR006YRTJ394 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Both packaging formats are standard for 0201 components and are compatible with automated assembly equipment. The choice between packaging types depends on production volume and assembly line configuration rather than technical performance.

Q: Do these parts have identical moisture handling requirements?

A: Yes. Both parts carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions. Both can be stored and handled under standard industrial conditions without special desiccant packaging or baking procedures.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications. They are equivalent for all regulatory and compliance purposes.

Q: What determines whether a part can substitute for RC0603J394CS?

A: Substitution requires exact equivalence in resistance value (390 kOhms), tolerance (±5%), power rating (0.05W), package type (0201), temperature coefficient (±250ppm/°C), operating temperature range (-55°C to 125°C), and compliance certifications (ROHS3, MSL 1). Deviations in any of these parameters disqualify a part from direct substitution.