RC2012F2490CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F2490CS is a 249 Ohm ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with Tape & Reel packaging. The part is ROHS3 compliant and features moisture-resistant construction with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value
Resistance	249 Ohms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: resistance value (249 Ohms), tolerance (±1%), package format (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Parts are grouped into two categories:

Direct Substitutes maintain identical electrical specifications and power rating (0.125W / 1/8W). These include CR0805-FX-2490ELF (Bourns Inc.), ERJ-6ENF2490V (Panasonic Electronic Components), KTR10EZPF2490 (Rohm Semiconductor), and RMCF0805FT249R (Stackpole Electronics Inc.).

Similar Substitutes share core electrical parameters but differ in secondary characteristics such as enhanced power rating (0.5W / 1/2W), automotive qualification level, or moisture resistance features. These include AC0805FR-07249RL (YAGEO), CRCW0805249RFKEA (Vishay Dale), CRCW0805249RFKEAHP (Vishay Dale), and RCS0805249RFKEA (Vishay Dale).

All substitute parts maintain identical package dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and two-terminal configuration, ensuring mechanical and electrical compatibility in PCB layouts.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Temp Coeff	Op Temp Range	Height Max	Features	Automotive Rating	Inventory
RC2012F2490CS	Samsung Electro-Mechanics	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.026" (0.65mm)	Moisture Resistant	—	1039 Pcs
CR0805-FX-2490ELF	Bourns Inc.	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.024" (0.60mm)	Moisture Resistant	—	8153 Pcs
ERJ-6ENF2490V	Panasonic Electronic Components	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.028" (0.70mm)	Automotive AEC-Q200	AEC-Q200	218164 Pcs
KTR10EZPF2490	Rohm Semiconductor	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.026" (0.65mm)	Automotive AEC-Q200, High Voltage	AEC-Q200	5392 Pcs
RMCF0805FT249R	Stackpole Electronics Inc	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.026" (0.65mm)	Automotive AEC-Q200	AEC-Q200	135427 Pcs
AC0805FR-07249RL	YAGEO	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.024" (0.60mm)	Automotive AEC-Q200, Moisture Resistant	AEC-Q200	28998 Pcs
CRCW0805249RFKEA	Vishay Dale	249 Ω	±1%	0.125W	±100ppm/°C	-55°C ~ 155°C	0.020" (0.50mm)	Automotive AEC-Q200	AEC-Q200	74328 Pcs
CRCW0805249RFKEAHP	Vishay Dale	249 Ω	±1%	0.5W	±100ppm/°C	-55°C ~ 155°C	0.020" (0.50mm)	Automotive AEC-Q200, Pulse Withstanding	AEC-Q200	25539 Pcs
RCS0805249RFKEA	Vishay Dale	249 Ω	±1%	0.5W	±100ppm/°C	-55°C ~ 155°C	0.020" (0.50mm)	Automotive AEC-Q200, Pulse Withstanding	AEC-Q200	8265 Pcs

Engineering Selection Recommendations

For General Industrial Applications: CR0805-FX-2490ELF (Bourns Inc.) and RC2012F2490CS (Samsung Electro-Mechanics) are functionally equivalent. Both maintain identical electrical specifications, power rating, and moisture resistance. Selection between these parts depends on procurement availability and supply chain requirements.

For Automotive Applications: ERJ-6ENF2490V (Panasonic), KTR10EZPF2490 (Rohm Semiconductor), RMCF0805FT249R (Stackpole Electronics Inc.), AC0805FR-07249RL (YAGEO), and CRCW0805249RFKEA (Vishay Dale) are qualified to AEC-Q200 automotive standards. These parts are suitable for automotive-grade circuit designs requiring enhanced reliability and qualification documentation.

For High-Voltage or Pulse-Withstanding Applications: KTR10EZPF2490 (Rohm Semiconductor) includes high-voltage capability. CRCW0805249RFKEAHP (Vishay Dale) and RCS0805249RFKEA (Vishay Dale) provide 0.5W power rating with pulse-withstanding characteristics, suitable for applications requiring enhanced transient protection or higher power dissipation capacity.

For Moisture-Sensitive Environments: AC0805FR-07249RL (YAGEO) combines automotive AEC-Q200 qualification with explicit moisture-resistant features, providing dual environmental protection.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification, ensuring regulatory consistency with the original RC2012F2490CS specification.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805249RFKEAHP or RCS0805249RFKEA be used as direct replacements for RC2012F2490CS?

A: These parts share identical resistance, tolerance, temperature coefficient, and operating temperature range. However, they feature 0.5W power rating compared to the 0.125W rating of RC2012F2490CS. In applications where the circuit design specifies 0.125W power dissipation, the higher-rated parts function correctly but represent over-specification. Mechanical height differs (0.020" vs. 0.026"), which may affect PCB layout clearance in space-constrained designs.

Q: What is the difference between automotive AEC-Q200 qualified parts and non-qualified parts?

A: AEC-Q200 qualification indicates the part has undergone automotive-grade reliability testing and documentation. Parts such as ERJ-6ENF2490V, KTR10EZPF2490, RMCF0805FT249R, AC0805FR-07249RL, CRCW0805249RFKEA, CRCW0805249RFKEAHP, and RCS0805249RFKEA carry this certification. Non-qualified parts (RC2012F2490CS and CR0805-FX-2490ELF) are suitable for industrial and consumer applications but lack automotive qualification documentation.

Q: Are all substitute parts mechanically compatible with the original RC2012F2490CS?

A: All substitute parts use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and two-terminal configuration. Seated height varies between 0.020" and 0.028" (0.50mm to 0.70mm). In standard PCB designs with adequate clearance, this variation does not affect mechanical compatibility. Applications with tight vertical constraints should verify height specifications.

Q: Which substitute part offers the best inventory availability?

A: RMCF0805FT249R (Stackpole Electronics Inc.) provides the highest inventory level at 135,427 pieces. ERJ-6ENF2490V (Panasonic Electronic Components) offers 218,164 pieces. Both parts are automotive AEC-Q200 qualified and maintain 0.125W power rating identical to the original specification.

Q: Can I substitute RC2012F2490CS with KTR10EZPF2490 for high-voltage applications?

A: KTR10EZPF2490 is specified with high-voltage capability and maintains all core electrical parameters (249 Ohms, ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C). It is suitable for high-voltage circuit designs. However, specific voltage ratings are not provided in the available data. Circuit design verification is required to confirm voltage compatibility with application requirements.

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

A: MSL 1 indicates unlimited shelf life without moisture-related degradation. All listed parts, including RC2012F2490CS and all substitutes, carry MSL 1 classification. This means parts do not require special moisture-barrier packaging or baking procedures prior to soldering, simplifying handling and storage requirements.

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