RC5025F2491CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F2491CS is a 2.49 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.667W (2/3W) in a 2010 (5025 Metric) surface mount package. This component is classified as Active product status with moisture resistant construction and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and REACH unaffected, suitable for general industrial and commercial applications requiring precision resistive elements with stable temperature characteristics across the -55°C to 155°C operating range.

Equivalent and substitute parts are necessary when the original RC5025F2491CS becomes unavailable, when higher power ratings are required for thermal margin, or when automotive-grade certifications (AEC-Q200) are mandated by application requirements.

Substiute Parts

RC5025F2491CS

Samsung Electro-MechanicsIn Stock: 909RC5025F2491CS Datasheet

Current PartRFQ

AC2010FK-072K49L

YAGEOIn Stock: 2808AC2010FK-072K49L Datasheet

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RC2010FK-072K49L

YAGEOIn Stock: 5336RC2010FK-072K49L Datasheet

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CRCW20102K49FKEF

Vishay DaleIn Stock: 8394CRCW20102K49FKEF Datasheet

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ERJ-12SF2491U

Panasonic Electronic ComponentsIn Stock: 9340ERJ-12SF2491U Datasheet

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RMCF2010FT2K49

Stackpole Electronics IncIn Stock: 3031RMCF2010FT2K49 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC5025F2491CS is based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Resistance value must be exactly 2.49 kOhms
• Tolerance must be ±1% or tighter
• Package must be 2010 (5025 Metric) for PCB footprint compatibility
• Composition must be thick film
• Temperature coefficient ±100ppm/°C
• Operating temperature range -55°C to 155°C minimum
• RoHS3 compliance mandatory
• MSL 1 rating required

Power Rating Consideration: Substitute parts rated at 0.75W (3/4W) are acceptable upgrades from the original 0.667W (2/3W) specification. Higher power ratings provide additional thermal margin without affecting electrical performance or footprint compatibility.

Automotive Certification: Parts with AEC-Q200 automotive qualification (AC2010FK-072K49L, CRCW20102K49FKEF, ERJ-12SF2491U, RMCF2010FT2K49) are functionally equivalent and suitable for applications requiring automotive-grade components. Non-automotive variants (RC2010FK-072K49L) remain valid for non-automotive applications.

Product Status Consideration: ERJ-12SF2491U carries "Not For New Designs" status and should be used only for legacy system maintenance or replacement applications.

Parameter Comparison

Engineering Selection Recommendations

For General Industrial Applications (Non-Automotive): RC2010FK-072K49L (YAGEO) is the primary substitute. This part maintains Active product status, provides upgraded 0.75W power rating for thermal margin, and is available in high volume (5300 pcs in stock). The YAGEO RC series offers direct functional equivalence with identical electrical specifications and package dimensions.

For Automotive Applications Requiring AEC-Q200 Certification: Select from AC2010FK-072K49L (YAGEO), CRCW20102K49FKEF (Vishay Dale), or RMCF2010FT2K49 (Stackpole Electronics Inc). All three parts carry AEC-Q200 automotive qualification and Active product status. CRCW20102K49FKEF offers the highest inventory availability (8300 pcs). AC2010FK-072K49L provides automotive-grade performance with 2700 pcs available.

For Legacy System Maintenance Only: ERJ-12SF2491U (Panasonic) carries "Not For New Designs" status and should be used exclusively for replacement in existing systems where this specific part number is already deployed. This part maintains full electrical and mechanical compatibility but is not recommended for new circuit designs.

Inventory and Supply Considerations:

• CRCW20102K49FKEF: 8300 pcs (highest availability)
• RC2010FK-072K49L: 5300 pcs
• AC2010FK-072K49L: 2700 pcs
• RMCF2010FT2K49: 2957 pcs
• ERJ-12SF2491U: 9313 pcs (legacy status)

All substitute parts are ROHS3 compliant, REACH unaffected, and classified under HTSUS 8533.21.0030 with ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can RC2010FK-072K49L replace RC5025F2491CS directly on the PCB?

A: Yes. Both parts use the 2010 (5025 Metric) package with identical footprint dimensions (0.197" L x 0.098" W / 5.00mm x 2.50mm). Maximum seated heights are 0.66mm (original) and 0.65mm (substitute), which are within standard PCB assembly tolerances. No layout modifications are required.

Q: What is the difference between the 0.667W and 0.75W power ratings?

A: The 0.75W rating provides 12.5% additional thermal capacity. This upgrade does not affect electrical performance, frequency response, or temperature coefficient. Higher power rating allows the component to dissipate more heat without exceeding maximum junction temperature, providing design margin for applications with variable load conditions.

Q: Are automotive-grade parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. AEC-Q200 certified parts meet or exceed general industrial specifications. These parts can be used in any application where the original RC5025F2491CS is specified. Automotive certification indicates additional qualification testing and reliability assurance, making these parts suitable for mission-critical applications regardless of end-use market.

Q: Why is ERJ-12SF2491U marked "Not For New Designs"?

A: This designation indicates that Panasonic has transitioned this product line and is not recommending it for new circuit development. However, the part remains functionally equivalent and is suitable for replacement in existing systems or legacy product maintenance. For new designs, select from AC2010FK-072K49L, RC2010FK-072K49L, CRCW20102K49FKEF, or RMCF2010FT2K49.

Q: Do all substitute parts have the same temperature coefficient?

A: Yes. All listed substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range, identical to the original RC5025F2491CS. This ensures consistent performance across thermal cycling and temperature extremes.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This simplifies supply chain management and eliminates the need for desiccant packaging or bake-out procedures before assembly.

Q: Can these parts be used interchangeably in production?

A: Yes, within the constraints of your supply chain and quality agreements. All listed parts meet identical electrical specifications (2.49 kOhms ±1%, ±100ppm/°C, -55°C to 155°C). Verify that your procurement and quality documentation permits cross-manufacturer substitution. Tape & Reel packaging format is standard for all substitutes, suitable for automated assembly.

Q: Which substitute offers the best value for high-volume production?

A: CRCW20102K49FKEF (Vishay Dale) provides the highest inventory availability (8300 pcs) with AEC-Q200 certification and Active product status. RC2010FK-072K49L (YAGEO) offers strong availability (5300 pcs) for non-automotive applications. Both support high-volume reel purchasing with consistent lead times.