RC0603F681CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603F681CS is a 680 Ohms ±1% 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 features moisture-resistant construction and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements, supply chain constraints, or manufacturing discontinuation necessitate component replacement while maintaining electrical and mechanical compatibility within specified tolerances.

Substiute Parts

RC0603F681CS

Samsung Electro-MechanicsIn Stock: 1185RC0603F681CS Datasheet

Current PartRFQ

CRCW0201680RFKED

Vishay DaleIn Stock: 8317CRCW0201680RFKED Datasheet

DirectRFQ

MCR006YRTF6800

Rohm SemiconductorIn Stock: 10501MCR006YRTF6800 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC0603F681CS is determined by strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Resistance value: 680 Ohms (exact match required)
• Tolerance: ±1% (minimum requirement)
• Power rating: 0.05W or greater
• Package: 0201 (0603 Metric) form factor
• Composition: Thick film construction
• Operating temperature range: Must support -55°C to 125°C minimum
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 or better

Direct Equivalent Classification: CRCW0201680RFKED (Vishay Dale) qualifies as a direct equivalent. All electrical specifications, package dimensions, and compliance certifications align with the RC0603F681CS. The substitute operates across an extended temperature range (-55°C to 155°C) and features a lower temperature coefficient (±100ppm/°C versus ±250ppm/°C), providing enhanced performance margins.

Similar Substitute Classification: MCR006YRTF6800 (Rohm Semiconductor) is classified as a similar substitute. Electrical parameters and package specifications match the main part. However, this part is discontinued at DiGi Electronics, limiting future availability. The temperature coefficient (±250ppm/°C) and operating range (-55°C to 125°C) are identical to the RC0603F681CS.

Parameter Comparison

Engineering Selection Recommendations

CRCW0201680RFKED (Vishay Dale) - Recommended Direct Equivalent

This part is the preferred substitute for new designs and ongoing production. The component maintains full electrical and mechanical compatibility with the RC0603F681CS while offering extended operating temperature range (-55°C to 155°C) and superior temperature stability (±100ppm/°C). Both parts carry ROHS3 compliance and MSL 1 ratings. Current inventory availability (8305 pcs) supports production requirements. Packaging format (Tape & Reel) aligns with automated assembly processes.

MCR006YRTF6800 (Rohm Semiconductor) - Alternative for Existing Stock

This part meets all electrical and mechanical specifications of the RC0603F681CS and is suitable for applications where existing inventory must be utilized. However, the product status indicates discontinuation at DiGi Electronics, restricting future procurement options. The temperature coefficient (±250ppm/°C) and operating range (-55°C to 125°C) match the original part exactly. Use of this substitute should be limited to applications where long-term supply is not critical or where existing stock must be depleted.

Frequently Asked Questions (FAQ)

Q: Can CRCW0201680RFKED be used as a direct replacement for RC0603F681CS in existing designs?

A: Yes. Both parts share identical resistance value (680 Ohms), tolerance (±1%), power rating (0.05W), package format (0201/0603 Metric), and composition (thick film). Physical dimensions and termination count are identical. ROHS3 and MSL 1 compliance ratings match. The Vishay part operates across an extended temperature range and features improved temperature stability, making it functionally superior for the specified application.

Q: What is the difference between the temperature coefficients of these parts?

A: The RC0603F681CS and MCR006YRTF6800 both specify ±250ppm/°C temperature coefficient. The CRCW0201680RFKED features ±100ppm/°C, indicating superior resistance stability across temperature variations. For applications operating across the full -55°C to 125°C range, the lower temperature coefficient reduces resistance drift and improves circuit performance predictability.

Q: Are packaging formats interchangeable between these three parts?

A: Yes. All three parts use the 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). PCB footprints and pick-and-place assembly parameters are identical. Packaging format differences (Tape & Reel versus Cut Tape & Digi-Reel) affect supply chain logistics but not component compatibility.

Q: Why is MCR006YRTF6800 marked as discontinued?

A: Product discontinuation at DiGi Electronics indicates the manufacturer (Rohm Semiconductor) has ceased active production or distribution through this channel. Existing inventory may remain available through alternative distributors, but long-term procurement cannot be assured. For new designs or ongoing production, CRCW0201680RFKED is the recommended substitute to ensure supply chain continuity.

Q: Do all three parts meet the same compliance requirements?

A: Yes. RC0603F681CS, CRCW0201680RFKED, and MCR006YRTF6800 are all ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. REACH status is unaffected for all three parts. ECCN classification (EAR99) and HTSUS code (8533.21.0030) are identical, supporting equivalent regulatory and trade documentation.

Q: What is the significance of MSL 1 rating for these components?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture bake requirements. These components do not require special moisture control during storage or handling. Standard warehouse conditions are acceptable. This rating applies uniformly across all three substitute parts, eliminating moisture management as a differentiation factor in component selection.