RC1608F63R4CS Equivalent & Substitute Parts

Part Overview

The RC1608F63R4CS is a 63.4 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status and is designed for general-purpose applications requiring moisture-resistant thick film construction. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits alternative qualified manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

RC1608F63R4CS

Samsung Electro-MechanicsIn Stock: 723RC1608F63R4CS Datasheet

Current PartRFQ

CR0603-FX-63R4ELF

Bourns Inc.In Stock: 76548CR0603-FX-63R4ELF Datasheet

DirectRFQ

RC0603FR-0763R4L

YAGEOIn Stock: 3139RC0603FR-0763R4L Datasheet

DirectRFQ

CRCW060363R4FKEA

Vishay DaleIn Stock: 9544CRCW060363R4FKEA Datasheet

SimilarRFQ

ERJ-3EKF63R4V

Panasonic Electronic ComponentsIn Stock: 176676ERJ-3EKF63R4V Datasheet

SimilarRFQ

RMCF0603FT63R4

Stackpole Electronics IncIn Stock: 4067RMCF0603FT63R4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F63R4CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 63.4 Ohms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package type: 0603 (1608 Metric)
• Number of terminations: 2
• Composition: Thick Film

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

All identified substitute parts meet these criteria without exception. Substitute parts are categorized as Direct Manufacturer equivalents or Similar parts based on feature alignment. Direct equivalents share identical moisture-resistant thick film construction. Similar parts include automotive-grade AEC-Q200 qualified variants, which provide enhanced reliability specifications while maintaining all core electrical and mechanical compatibility requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Preferred for Standard Applications):

CR0603-FX-63R4ELF (Bourns Inc.) and RC0603FR-0763R4L (YAGEO) are direct functional equivalents to the RC1608F63R4CS. Both parts maintain identical electrical specifications, package dimensions, and moisture-resistant thick film construction. These parts are suitable for direct substitution in applications where the original Samsung Electro-Mechanics component is unavailable. Both are Active product status with ROHS3 compliance and MSL 1 rating.

Automotive-Grade Alternatives (Enhanced Reliability Applications):

CRCW060363R4FKEA (Vishay Dale), ERJ-3EKF63R4V (Panasonic Electronic Components), and RMCF0603FT63R4 (Stackpole Electronics Inc) are automotive-grade AEC-Q200 qualified variants. These parts maintain all core electrical and mechanical specifications while providing additional qualification for automotive applications. AEC-Q200 certification indicates enhanced reliability testing and qualification standards. These parts are suitable for substitution in applications requiring automotive-grade component qualification or where enhanced reliability specifications are mandated by design requirements.

All substitute parts are Active product status, ROHS3 compliant, and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-63R4ELF replace RC1608F63R4CS in any application?

A: CR0603-FX-63R4ELF is a direct functional equivalent. Both parts share identical resistance value (63.4 Ohms), tolerance (±1%), power rating (0.1W), package format (0603), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, MSL 1). Direct substitution is supported without design modification.

Q: What is the difference between moisture-resistant and automotive AEC-Q200 variants?

A: The RC1608F63R4CS, CR0603-FX-63R4ELF, and RC0603FR-0763R4L are specified as moisture-resistant thick film resistors. The CRCW060363R4FKEA, ERJ-3EKF63R4V, and RMCF0603FT63R4 are automotive-grade AEC-Q200 qualified variants. Both categories meet identical electrical and mechanical specifications. AEC-Q200 qualification indicates additional automotive-specific reliability testing and qualification. Selection between these categories depends on application requirements and design specifications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: All identified substitute parts are supplied in Tape & Reel (TR) packaging format, consistent with the original RC1608F63R4CS component. This packaging format is standard for high-volume surface mount assembly operations.

Q: Do substitute parts have identical physical dimensions?

A: All substitute parts use the 0603 (1608 Metric) package format. Minor dimensional variations exist within standard package tolerances. The RC1608F63R4CS, CR0603-FX-63R4ELF, and RC0603FR-0763R4L specify 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. The CRCW060363R4FKEA specifies 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" (0.50mm) maximum seated height. The RMCF0603FT63R4 specifies 0.061" L x 0.031" W (1.55mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. These variations remain within standard 0603 package tolerances and do not affect PCB layout compatibility.

Q: What is Moisture Sensitivity Level 1 (MSL 1)?

A: MSL 1 indicates Unlimited shelf life without moisture bake requirements. Components with MSL 1 rating do not require special moisture control during storage or handling. All identified substitute parts carry MSL 1 rating, consistent with the original RC1608F63R4CS component.

Q: Are all substitute parts REACH compliant?

A: All identified substitute parts carry REACH Unaffected status, indicating compliance with REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. This status is consistent across all parts in this substitution group.