RC0402F4991CS Equivalent & Substitute Parts

Part Overview

The RC0402F4991CS is a 4.99 kOhms ±1% chip resistor manufactured by Samsung Electro-Mechanics, classified as a 01005 (0402 Metric) thick film resistor with 0.03W power rating. This component is designed for high-density surface mount applications requiring precision resistance values in compact form factors. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

RC0402F4991CS

Samsung Electro-MechanicsIn Stock: 789RC0402F4991CS Datasheet

Current PartRFQ

CRCW01004K99FREL

Vishay DaleIn Stock: 28012CRCW01004K99FREL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC0402F4991CS are identified based on strict equivalence across the following critical parameters:

Electrical Equivalence:

• Resistance value: 4.99 kOhms
• Tolerance: ±1%
• Power rating: 0.03W (1/32W)
• Temperature coefficient: ±250ppm/°C
• Operating temperature range: -55°C ~ 125°C

Mechanical Equivalence:

• Package type: 01005 (0402 Metric)
• Physical dimensions: 0.016" L x 0.008" W (0.40mm x 0.20mm)
• Maximum seated height: 0.006" (0.15mm)
• Number of terminations: 2

Compliance Equivalence:

• RoHS3 compliance
• Moisture sensitivity level: MSL 1 (Unlimited)
• REACH status: REACH Unaffected

Substitutes must match all parameters listed above to ensure direct interchangeability in circuit design and PCB assembly without design modification or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

The CRCW01004K99FREL (Vishay Dale) is a direct equivalent substitute for the RC0402F4991CS (Samsung Electro-Mechanics). Both components satisfy identical electrical, mechanical, and compliance requirements:

• Both parts maintain Active product status with full RoHS3 compliance
• Both achieve REACH Unaffected regulatory status
• Both components feature MSL 1 (Unlimited) moisture sensitivity rating, eliminating moisture-related handling constraints
• Electrical parameters are identical across resistance, tolerance, power rating, temperature coefficient, and operating temperature range
• Mechanical dimensions and package specifications are fully interchangeable
• Both utilize thick film composition with identical termination configuration

Component selection between these two parts may be based on inventory availability, supplier lead time, or procurement cost considerations, as no technical differentiation exists between them for circuit performance or reliability.

Frequently Asked Questions (FAQ)

Q: Can the CRCW01004K99FREL replace the RC0402F4991CS in existing designs?

A: Yes. The CRCW01004K99FREL is a direct substitute with identical electrical specifications (4.99 kOhms ±1%, 0.03W, ±250ppm/°C), mechanical dimensions (01005 package, 0.40mm x 0.20mm), and compliance certifications (RoHS3, REACH Unaffected). No circuit redesign or PCB layout modification is required.

Q: Are there differences in moisture sensitivity between these parts?

A: No. Both the RC0402F4991CS and CRCW01004K99FREL carry MSL 1 (Unlimited) rating, indicating no moisture-related handling or storage restrictions apply to either component.

Q: Do these parts have different temperature performance characteristics?

A: No. Both components operate across the identical temperature range (-55°C ~ 125°C) with matching temperature coefficient specifications (±250ppm/°C), ensuring equivalent performance across all operating conditions.

Q: What is the significance of the 01005 (0402 Metric) package designation?

A: The 01005 package is the metric equivalent of the 0402 imperial designation, representing a chip resistor measuring 0.40mm length by 0.20mm width with maximum seated height of 0.15mm. Both substitute parts conform to this specification, ensuring compatibility with PCB footprints and assembly equipment designed for this package type.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both components are RoHS3 compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications, ensuring equivalent regulatory status for procurement and export purposes.

Q: Can these parts be used interchangeably in high-precision applications?

A: Yes. Both components maintain ±1% tolerance specification and ±250ppm/°C temperature coefficient, supporting applications requiring precision resistance values within these tolerance bands.