RC0603J681CS Equivalent & Substitute Parts

Part Overview

The RC0603J681CS is a 680 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0201 (0603 Metric) package format. This surface mount device is rated for 0.05W (1/20W) power dissipation and operates across the temperature range of -55°C to 125°C. The component is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, indicating suitability for standard assembly and storage conditions.

The product maintains Active status with 4,757 pieces currently in stock. Equivalent and substitute parts are identified based on matching resistance value, package format, power rating, and thermal operating range. Substitute components may offer improved tolerance specifications or alternative manufacturer sourcing while maintaining functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

RC0603J681CS

Samsung Electro-MechanicsIn Stock: 4827RC0603J681CS Datasheet

Current PartRFQ

CRCW0201680RFKED

Vishay DaleIn Stock: 8317CRCW0201680RFKED Datasheet

UpgradeRFQ

MCR006YRTF6800

Rohm SemiconductorIn Stock: 10501MCR006YRTF6800 Datasheet

SimilarRFQ

MCR006YRTJ681

Rohm SemiconductorIn Stock: 4719MCR006YRTJ681 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC0603J681CS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 680 Ohms
• Package format: 0201 (0603 Metric)
• Power rating: 0.05W (1/20W)
• Composition: Thick Film
• Operating temperature range: -55°C to 125°C (minimum)
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS3 compliance

Allowable Variation Parameters:

• Tolerance: ±5% (main part) to ±1% (substitute parts) — tighter tolerance is acceptable
• Temperature coefficient: ±250ppm/°C (main part) to ±100ppm/°C (substitute parts) — lower coefficient is acceptable
• Packaging format: Cut Tape (CT) to Tape & Reel (TR) — both formats are compatible
• Manufacturer: Samsung Electro-Mechanics, Vishay Dale, or Rohm Semiconductor

Substitute parts meeting these criteria are functionally equivalent and may be selected based on availability, packaging preference, or tolerance requirements.

Parameter Comparison

Engineering Selection Recommendations

CRCW0201680RFKED (Vishay Dale) — Upgrade Substitute

The CRCW0201680RFKED is classified as an upgrade substitute due to superior tolerance specification (±1% versus ±5%) and extended operating temperature range (-55°C to 155°C versus -55°C to 125°C). This component maintains Active product status with 8,305 pieces in inventory. The tighter tolerance and lower temperature coefficient (±100ppm/°C) provide enhanced precision for applications requiring improved accuracy. RoHS3 compliance and MSL 1 rating ensure compatibility with standard manufacturing processes. Tape & Reel packaging is suitable for high-volume automated assembly operations.

MCR006YRTF6800 (Rohm Semiconductor) — Similar Substitute

The MCR006YRTF6800 offers ±1% tolerance with matching operating temperature range and temperature coefficient to the main part. This component is discontinued at DiGi Electronics but maintains 10,454 pieces in current inventory. Selection of this part is appropriate when tolerance improvement is required without extended temperature range specifications. Cut Tape and Digi-Reel packaging options provide flexibility for both manual and automated assembly.

MCR006YRTJ681 (Rohm Semiconductor) — Similar Substitute

The MCR006YRTJ681 matches the main part specification exactly with ±5% tolerance and identical operating temperature range (-55°C to 125°C). This component is discontinued at DiGi Electronics with 4,672 pieces available. Selection is appropriate for direct replacement applications where tolerance and thermal specifications are equivalent. Cut Tape and Digi-Reel packaging options are available.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and REACH Unaffected status, ensuring regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can CRCW0201680RFKED replace RC0603J681CS in all applications?

A: Yes. The CRCW0201680RFKED meets all mandatory matching parameters: 680 Ohm resistance, 0201 package, 0.05W power rating, thick film composition, and operating temperature range of -55°C to 125°C. The ±1% tolerance is tighter than the ±5% specification of the main part, making it suitable for applications requiring improved accuracy. Extended temperature range to 155°C provides additional thermal margin.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging provides components in individual strips suitable for manual assembly or small-quantity applications. Tape & Reel packaging supplies components on continuous reels optimized for automated pick-and-place assembly equipment. Both packaging formats contain identical components; selection depends on assembly process requirements and volume.

Q: Are the Rohm Semiconductor parts (MCR006YRTF6800 and MCR006YRTJ681) still available despite discontinued status?

A: Both Rohm parts are discontinued at DiGi Electronics but maintain current inventory of 10,454 and 4,672 pieces respectively. Availability through alternative distribution channels may vary. For new designs, the Active status components (RC0603J681CS or CRCW0201680RFKED) are recommended for long-term supply assurance.

Q: What does Temperature Coefficient (ppm/°C) indicate?

A: Temperature coefficient specifies the resistance change per degree Celsius across the operating temperature range. The main part and Rohm substitutes specify ±250ppm/°C, while the Vishay part specifies ±100ppm/°C. Lower values indicate greater resistance stability across temperature variations. Selection depends on application sensitivity to resistance drift.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (CRCW0201680RFKED, MCR006YRTF6800, and MCR006YRTJ681) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the main part specification. All components are REACH Unaffected and classified as EAR99 for export purposes.

Q: Can tolerance be mixed in a single circuit design?

A: Component tolerance selection depends on circuit design requirements. Applications tolerating ±5% resistance variation can use the main part or MCR006YRTJ681. Applications requiring tighter tolerance specifications should use CRCW0201680RFKED (±1%) or MCR006YRTF6800 (±1%). Mixing tolerance grades within a single circuit is permissible when design margins accommodate the variation range.