RC2012F4990CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F4990CS is a 499 Ohm ±1% 0.125W (1/8W) chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 1007 pieces in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Substiute Parts

RC2012F4990CS

Samsung Electro-MechanicsIn Stock: 1104RC2012F4990CS Datasheet

Current PartRFQ

RC0805FR-07499RL

YAGEOIn Stock: 4818RC0805FR-07499RL Datasheet

DirectRFQ

AC0805FR-07499RL

YAGEOIn Stock: 24820AC0805FR-07499RL Datasheet

UpgradeRFQ

CRCW0805499RFKEA

Vishay DaleIn Stock: 113668CRCW0805499RFKEA Datasheet

SimilarRFQ

CRCW0805499RFKEAHP

Vishay DaleIn Stock: 150679CRCW0805499RFKEAHP Datasheet

SimilarRFQ

CRCW0805499RFKTA

Vishay DaleIn Stock: 10281CRCW0805499RFKTA Datasheet

SimilarRFQ

ERJ-6ENF4990V

Panasonic Electronic ComponentsIn Stock: 109076ERJ-6ENF4990V Datasheet

SimilarRFQ

RCS0805499RFKEA

Vishay DaleIn Stock: 35425RCS0805499RFKEA Datasheet

SimilarRFQ

RMCF0805FT499R

Stackpole Electronics IncIn Stock: 145169RMCF0805FT499R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: resistance value (499 Ohms), tolerance (±1%), package format (0805), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and moisture sensitivity level (MSL 1). Parts are grouped into three categories based on functional equivalence and additional certifications:

Direct Equivalent: RC0805FR-07499RL (YAGEO) matches all core electrical and mechanical specifications with identical power rating (0.125W) and packaging.

Upgrade Equivalent: AC0805FR-07499RL (YAGEO) provides automotive AEC-Q200 qualification while maintaining all core specifications.

Similar Equivalents: CRCW0805499RFKEA, CRCW0805499RFKTA, ERJ-6ENF4990V, and RMCF0805FT499R all meet core specifications with automotive AEC-Q200 certification. CRCW0805499RFKEAHP and RCS0805499RFKEA provide enhanced power rating (0.5W) with pulse withstanding capability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Non-Automotive Applications): RC0805FR-07499RL (YAGEO) provides functional equivalence with identical electrical specifications and improved height profile (0.60mm vs 0.66mm). Both parts are ROHS3 compliant with MSL 1 rating.

For Automotive Applications: AC0805FR-07499RL (YAGEO), CRCW0805499RFKEA (Vishay Dale), ERJ-6ENF4990V (Panasonic), and RMCF0805FT499R (Stackpole) all provide AEC-Q200 automotive qualification with 0.125W power rating. These parts maintain identical electrical performance while meeting automotive reliability standards.

For Enhanced Power Margin Applications: CRCW0805499RFKEAHP (Vishay Dale) and RCS0805499RFKEA (Vishay Dale) offer 0.5W power rating with pulse withstanding capability, providing 4x power margin over the original specification while maintaining all other electrical parameters and AEC-Q200 certification.

Compliance Considerations: CRCW0805499RFKTA (Vishay Dale) is RoHS non-compliant and REACH affected; selection requires verification against design compliance requirements. All other substitute parts are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-07499RL replace RC2012F4990CS in all applications? A: RC0805FR-07499RL meets all core electrical specifications (499Ω ±1%, 0.125W, ±100ppm/°C, -55°C to 155°C) and package requirements (0805). Both are ROHS3 compliant with MSL 1. The substitute has a lower seated height (0.60mm vs 0.66mm), which is compatible with standard PCB assembly processes.

Q: What is the difference between the YAGEO AC0805FR-07499RL and RC0805FR-07499RL? A: Both parts are manufactured by YAGEO with identical electrical specifications and package format. AC0805FR-07499RL includes automotive AEC-Q200 qualification, making it suitable for automotive applications. RC0805FR-07499RL is the standard industrial grade equivalent.

Q: Are the Vishay Dale CRCW0805499RFKEA and CRCW0805499RFKTA interchangeable? A: Both parts have identical electrical specifications and 0.125W power rating. However, CRCW0805499RFKTA is RoHS non-compliant and REACH affected, while CRCW0805499RFKEA is ROHS3 compliant and REACH unaffected. Selection depends on compliance requirements.

Q: When should I use CRCW0805499RFKEAHP instead of standard 0.125W parts? A: CRCW0805499RFKEAHP provides 0.5W power rating with pulse withstanding capability. Use this part when circuit design requires higher power dissipation margin or when subjected to transient pulse conditions beyond the 0.125W specification.

Q: Do all substitute parts fit the same PCB footprint? A: All substitute parts use 0805 (2012 Metric) package with identical length (2.00mm) and width (1.25mm). Seated heights vary between 0.50mm and 0.70mm; verify PCB assembly clearance specifications for your specific design.

Q: Which substitute offers the best inventory availability? A: CRCW0805499RFKEA (Vishay Dale) has the highest inventory at 113,589 pieces, followed by CRCW0805499RFKEAHP at 150,667 pieces and RMCF0805FT499R at 145,078 pieces.

Q: Are all substitute parts suitable for automotive applications? A: AC0805FR-07499RL, CRCW0805499RFKEA, CRCW0805499RFKEAHP, ERJ-6ENF4990V, RCS0805499RFKEA, and RMCF0805FT499R all carry AEC-Q200 automotive qualification. RC0805FR-07499RL and CRCW0805499RFKTA are industrial grade without automotive certification.