RC0603J683CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J683CS is a 68 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0201 (0603 Metric) package format. This surface mount device is rated for 0.05W (1/20W) power dissipation and operates across -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 without special handling requirements.

Equivalent and substitute parts are necessary when the original RC0603J683CS becomes unavailable, when design requirements demand tighter tolerance specifications, or when alternative manufacturers' components offer improved performance characteristics or better inventory availability.

Substiute Parts

RC0603J683CS

Samsung Electro-MechanicsIn Stock: 1120RC0603J683CS Datasheet

Current PartRFQ

RC0603F683CS

Samsung Electro-MechanicsIn Stock: 3075RC0603F683CS Datasheet

UpgradeRFQ

CRCW020168K0FKED

Vishay DaleIn Stock: 28998CRCW020168K0FKED Datasheet

UpgradeRFQ

MCR006YRTF6802

Rohm SemiconductorIn Stock: 16337MCR006YRTF6802 Datasheet

SimilarRFQ

MCR006YRTJ683

Rohm SemiconductorIn Stock: 14960MCR006YRTJ683 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC0603J683CS is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Resistance value: 68 kOhms (exact match required)
• Package / Case: 0201 (0603 Metric) (exact match required)
• Power rating: 0.05W minimum (equal or higher acceptable)
• Composition: Thick Film
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• RoHS compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Tolerance: ±5% (original specification); ±1% acceptable as upgrade
• Temperature Coefficient: ±250ppm/°C (original); ±100ppm/°C acceptable as upgrade
• Operating Temperature Range: -55°C ~ 125°C (original); -55°C ~ 155°C acceptable as upgrade
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) both acceptable

Substitute parts are categorized as "Upgrade" when tolerance is improved to ±1% or temperature coefficient is reduced to ±100ppm/°C, or operating temperature range is extended. Parts are categorized as "Similar" when tolerance remains at ±5% with matching or equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

RC0603F683CS (Samsung Electro-Mechanics): This upgrade substitute offers improved tolerance specification (±1% versus ±5%) while maintaining identical electrical and thermal characteristics. Both parts are manufactured by Samsung Electro-Mechanics and remain in active product status. Selection is appropriate when circuit design requires tighter resistance tolerance without modifying thermal or dimensional requirements. Packaging differs (Cut Tape versus Tape & Reel), which may affect procurement and assembly workflows.

CRCW020168K0FKED (Vishay Dale): This upgrade substitute provides both improved tolerance (±1%) and superior temperature coefficient performance (±100ppm/°C versus ±250ppm/°C), along with extended operating temperature range (-55°C ~ 155°C). The component remains in active product status with substantial inventory availability. Selection is appropriate for applications requiring enhanced temperature stability or operation in elevated temperature environments. Maintains identical package, dimensions, and compliance certifications.

MCR006YRTF6802 (Rohm Semiconductor): This similar substitute matches the 68 kOhms resistance and 0.05W power rating with improved tolerance (±1%). However, this part is discontinued at DiGi Electronics, limiting long-term procurement viability. Selection should be restricted to applications with existing inventory or when alternative sourcing channels are established. Temperature coefficient and operating range remain equivalent to the main part.

MCR006YRTJ683 (Rohm Semiconductor): This similar substitute maintains identical electrical specifications (68 kOhms ±5%, ±250ppm/°C, -55°C ~ 125°C) and is discontinued at DiGi Electronics. Selection is not recommended for new designs due to product discontinuation status, though existing inventory may support legacy system maintenance.

Frequently Asked Questions (FAQ)

Q: Can RC0603F683CS replace RC0603J683CS in all applications?

A: Yes. RC0603F683CS is a direct substitute with improved tolerance specification (±1% versus ±5%). All electrical, thermal, and mechanical parameters are compatible. The tighter tolerance provides enhanced circuit performance without introducing any compatibility issues.

Q: What is the primary advantage of CRCW020168K0FKED over the original RC0603J683CS?

A: CRCW020168K0FKED offers three performance improvements: tolerance upgraded to ±1%, temperature coefficient reduced to ±100ppm/°C (from ±250ppm/°C), and operating temperature range extended to 155°C (from 125°C). These enhancements provide superior stability across temperature variations and extended operational capability in high-temperature environments.

Q: Are the Rohm Semiconductor parts (MCR006YRTF6802 and MCR006YRTJ683) suitable for new designs?

A: MCR006YRTF6802 and MCR006YRTJ683 are both discontinued at DiGi Electronics. While they meet the electrical and mechanical specifications for substitution, their discontinued status makes them unsuitable for new product designs requiring long-term component availability. These parts should be reserved for legacy system support or applications with established alternative sourcing.

Q: Does packaging format (Tape & Reel versus Cut Tape) affect electrical performance?

A: No. Packaging format affects only procurement, storage, and assembly logistics. Tape & Reel (TR) and Cut Tape (CT) formats contain identical components with identical electrical, thermal, and mechanical characteristics. Selection between formats depends on manufacturing equipment compatibility and inventory management requirements.

Q: Can I use a substitute part with ±1% tolerance in a circuit designed for ±5% tolerance?

A: Yes. A component with ±1% tolerance is a direct upgrade for applications specified at ±5% tolerance. The tighter tolerance provides superior circuit performance and stability without introducing any compatibility issues or design conflicts.

Q: What does MSL 1 (Unlimited) moisture sensitivity rating indicate?

A: MSL 1 (Unlimited) indicates the component requires no special moisture control during storage, handling, or assembly. The part can be stored in standard warehouse conditions without desiccant packaging or humidity-controlled environments, simplifying procurement and manufacturing logistics.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (RC0603F683CS, CRCW020168K0FKED, MCR006YRTF6802, and MCR006YRTJ683) are ROHS3 compliant, matching the compliance status of the original RC0603J683CS. This ensures compatibility with regulatory requirements and environmental standards across all applications.