RC0603J301CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J301CS is a 300 Ohms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in 0201 (0603 Metric) package format. This component is designed for surface mount applications requiring moisture-resistant performance across industrial temperature ranges. The part is currently active in production with 1025 units in stock.

Substitute parts are identified for applications requiring improved tolerance specifications, enhanced temperature stability, or alternative sourcing due to supply chain considerations. All substitute relationships are based on matching electrical specifications, mechanical dimensions, and environmental compliance requirements.

Substiute Parts

RC0603J301CS

Samsung Electro-MechanicsIn Stock: 1105RC0603J301CS Datasheet

Current PartRFQ

RCS0603F301CS

Samsung Electro-MechanicsIn Stock: 985RCS0603F301CS Datasheet

UpgradeRFQ

CRCW0201300RFKED

Vishay DaleIn Stock: 2864CRCW0201300RFKED Datasheet

UpgradeRFQ

MCR006YRTF3000

Rohm SemiconductorIn Stock: 1184MCR006YRTF3000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC0603J301CS are classified based on the following substitution criteria:

Electrical Parameters (Primary Matching Criteria):

• Resistance value: 300 Ohms (exact match required)
• Power rating: 0.05W, 1/20W (exact match required)
• Package format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)

Tolerance Upgrades: Substitute parts RCS0603F301CS, CRCW0201300RFKED, and MCR006YRTF3000 offer ±1% tolerance compared to the ±5% tolerance of the main part. These upgrades maintain all other electrical and mechanical specifications while providing tighter resistance value control.

Environmental & Compliance Parameters (Secondary Matching Criteria):

• Operating temperature range compatibility
• Temperature coefficient performance
• RoHS3 compliance (all parts meet this requirement)
• MSL rating (all parts rated MSL 1)

Packaging Format: All substitute parts maintain the 0201 (0603 Metric) package specification, ensuring mechanical and thermal compatibility with existing PCB designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC0603J301CS): Select the RC0603J301CS when ±5% tolerance is acceptable for the application and Samsung Electro-Mechanics sourcing is preferred. This part is currently active in production with adequate inventory levels. Tape & Reel packaging is suitable for automated assembly processes.

Upgrade Selection (CRCW0201300RFKED): The CRCW0201300RFKED from Vishay Dale is recommended when tighter tolerance control (±1%) is required and extended operating temperature range (-55°C ~ 155°C) provides design margin. This part is currently active in production with the highest inventory availability (2804 units). The ±100ppm/°C temperature coefficient provides superior temperature stability compared to the main part. Tape & Reel packaging supports high-volume manufacturing.

Alternative Upgrade (RCS0603F301CS): The RCS0603F301CS offers ±1% tolerance with anti-sulfur and moisture-resistant features. However, this part is discontinued at DiGi Electronics, limiting long-term availability. Select only when existing inventory is confirmed and supply continuity is not a concern.

Similar Alternative (MCR006YRTF3000): The MCR006YRTF3000 from Rohm Semiconductor provides ±1% tolerance with equivalent temperature performance to the main part. This part is discontinued at DiGi Electronics. Consider only for applications where Rohm Semiconductor sourcing is mandated and existing stock is available.

Compliance Verification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory compatibility with the main part across all identified substitutes.

Frequently Asked Questions (FAQ)

Q: Can RCS0603F301CS replace RC0603J301CS in production?

A: RCS0603F301CS is mechanically and electrically compatible, offering improved ±1% tolerance. However, this part is discontinued at DiGi Electronics. Verify current inventory availability before committing to production changeover. Both parts share identical package dimensions (0.024" L x 0.012" W) and operating temperature range (-55°C ~ 125°C).

Q: What is the primary difference between RC0603J301CS and CRCW0201300RFKED?

A: The CRCW0201300RFKED provides ±1% tolerance (versus ±5%), superior temperature coefficient (±100ppm/°C versus ±250ppm/°C), and extended operating temperature range (-55°C ~ 155°C versus -55°C ~ 125°C). All other electrical and mechanical specifications are identical. CRCW0201300RFKED is currently active in production with higher inventory levels.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the 0201 (0603 Metric) package format, ensuring mechanical compatibility. However, packaging types differ: RC0603J301CS and CRCW0201300RFKED are supplied in Tape & Reel (TR) format, while RCS0603F301CS is Cut Tape (CT) and MCR006YRTF3000 is available in Cut Tape (CT) & Digi-Reel® format. Verify packaging compatibility with assembly equipment before selection.

Q: Which substitute part has the best long-term availability?

A: CRCW0201300RFKED from Vishay Dale is currently active in production with 2804 units in stock, providing the strongest availability position. RC0603J301CS (main part) is also active with 1025 units. RCS0603F301CS and MCR006YRTF3000 are both discontinued at DiGi Electronics and should not be selected for new designs requiring long-term supply assurance.

Q: Can MCR006YRTF3000 be used in high-temperature applications?

A: MCR006YRTF3000 operates within -55°C ~ 125°C range, identical to RC0603J301CS. For applications requiring extended temperature performance, CRCW0201300RFKED supports -55°C ~ 155°C, providing an additional 30°C upper temperature margin.

Q: Are all parts RoHS3 compliant?

A: Yes. RC0603J301CS, RCS0603F301CS, CRCW0201300RFKED, and MCR006YRTF3000 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory compatibility across all substitutes.