RC0402F4990CS Equivalent & Substitute Parts

Part Overview

The RC0402F4990CS is a 499 Ohm ±1% chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.03W (1/32W) power dissipation in the 01005 (0402 Metric) package. This moisture-resistant thick film resistor operates across the temperature range of -55°C to 125°C and is ROHS3 compliant. The part is currently in active production status with 989 pieces available in inventory. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

RC0402F4990CS

Samsung Electro-MechanicsIn Stock: 1009RC0402F4990CS Datasheet

Current PartRFQ

CRCW0100499RFREL

Vishay DaleIn Stock: 34757CRCW0100499RFREL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC0402F4990CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 499 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.03W / 1/32W (exact match required)
• Temperature coefficient: ±250ppm/°C (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)

Mechanical Parameters:

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

Compliance & Environmental Parameters:

• Composition: Thick Film (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• REACH Status: REACH Unaffected (exact match required)

Substitute parts must satisfy all parameters listed above to ensure direct interchangeability in circuit design and PCB assembly without modification to component placement, soldering processes, or electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the RC0402F4990CS and CRCW0100499RFREL are active production components with full parameter equivalence. Selection between these parts is based on the following engineering criteria:

Compliance & Certification: Both parts satisfy ROHS3 compliance requirements and REACH unaffected status, making them suitable for applications subject to environmental and regulatory restrictions.

Product Availability & Supply Chain: The RC0402F4990CS (Samsung Electro-Mechanics) currently maintains 989 pieces in inventory. The CRCW0100499RFREL (Vishay Dale) maintains significantly higher inventory at 34,667 pieces. Selection should consider procurement lead times, volume requirements, and supply chain stability.

Manufacturing & Quality Assurance: Both manufacturers are established suppliers of precision thick film resistors. Component selection should align with existing qualification documentation, manufacturing process controls, and quality assurance protocols established for the application.

Electrical Performance: Electrical characteristics are identical across both parts. No performance differentiation exists with respect to resistance value, tolerance, power rating, temperature coefficient, or operating temperature range.

Mechanical Compatibility: Both parts are mechanically identical in package type, physical dimensions, and termination configuration, ensuring direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the CRCW0100499RFREL be used as a direct replacement for the RC0402F4990CS?

A: Yes. The CRCW0100499RFREL meets all electrical, mechanical, and compliance parameters required for direct substitution. No circuit design changes, PCB layout modifications, or assembly process adjustments are necessary.

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

A: No. Both parts carry Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating identical moisture handling and storage requirements.

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

A: The 01005 package is the metric equivalent of the 0402 imperial package size. Both parts use this identical package, ensuring compatibility with PCB footprints, pick-and-place equipment, and reflow soldering processes designed for this form factor.

Q: Do these parts require different soldering or assembly processes?

A: No. Both parts are identical in physical dimensions, termination type, and thermal characteristics. Existing assembly processes, solder profiles, and handling procedures apply equally to both components.

Q: What is the temperature coefficient specification, and why is it important?

A: Both parts specify ±250ppm/°C temperature coefficient. This parameter defines the resistance value change per degree Celsius across the operating temperature range. Identical specifications ensure equivalent circuit performance across thermal variations from -55°C to 125°C.

Q: Are there inventory or lead time considerations for component selection?

A: The CRCW0100499RFREL maintains higher inventory availability (34,667 pieces) compared to the RC0402F4990CS (989 pieces). For high-volume production or time-sensitive applications, the Vishay Dale part may offer procurement advantages.

Q: What does ROHS3 compliance mean for these components?

A: ROHS3 compliance indicates that both parts meet Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials including lead, cadmium, and mercury. Both parts are suitable for applications subject to ROHS regulations.

Q: Can these parts be used interchangeably in existing designs without qualification testing?

A: Component substitution decisions depend on design qualification protocols and manufacturing process controls established for the specific application. Electrical and mechanical equivalence is confirmed; however, design-specific qualification requirements should be evaluated according to organizational standards.