RC1005F2491CS Equivalent & Substitute Parts

Part Overview

The RC1005F2491CS is a 2.49 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package format. This surface-mount device is rated for 0.063W (1/16W) power dissipation and operates across the temperature range of -55°C to 155°C. The component features moisture resistance and is ROHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection. The part is currently in active production status with 715 units available in inventory.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for upgraded performance characteristics while maintaining electrical compatibility.

Substiute Parts

RC1005F2491CS

Samsung Electro-MechanicsIn Stock: 811RC1005F2491CS Datasheet

Current PartRFQ

RC0402FR-072K49L

YAGEOIn Stock: 5548RC0402FR-072K49L Datasheet

DirectRFQ

ERJ-2RKF2491X

Panasonic Electronic ComponentsIn Stock: 461571ERJ-2RKF2491X Datasheet

UpgradeRFQ

AC0402FR-072K49L

YAGEOIn Stock: 7948AC0402FR-072K49L Datasheet

SimilarRFQ

CRCW04022K49FKED

Vishay DaleIn Stock: 498085CRCW04022K49FKED Datasheet

SimilarRFQ

CRCW04022K49FKTD

Vishay DaleIn Stock: 97933CRCW04022K49FKTD Datasheet

SimilarRFQ

RMCF0402FT2K49

Stackpole Electronics IncIn Stock: 331633RMCF0402FT2K49 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F2491CS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match Exactly):

• Resistance value: 2.49 kOhms
• Tolerance: ±1%
• Package format: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Power rating may be equal to or greater than 0.063W (1/16W)
• Packaging format (Tape & Reel or Cut Tape) may differ
• Manufacturer may differ
• Compliance certifications (AEC-Q200, automotive ratings) may be added without restriction
• RoHS status may be ROHS3 compliant or non-compliant

All substitute parts listed maintain identical electrical characteristics and dimensional specifications, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications): RC0402FR-072K49L (YAGEO) serves as a direct functional equivalent with matching electrical and thermal characteristics. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which affects procurement and assembly processes but not circuit performance.

Upgraded Performance Option: ERJ-2RKF2491X (Panasonic Electronic Components) provides enhanced power rating capability at 0.1W (1/10W) compared to the 0.063W specification of the primary part. This upgrade maintains all electrical parameters while offering increased thermal headroom. The component carries AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade reliability.

Automotive-Qualified Alternatives: AC0402FR-072K49L (YAGEO), CRCW04022K49FKED (Vishay Dale), and RMCF0402FT2K49 (Stackpole Electronics Inc) all provide AEC-Q200 automotive qualification in addition to standard electrical equivalence. These parts are appropriate for designs requiring automotive-grade component certification.

Compliance Consideration: CRCW04022K49FKTD (Vishay Dale) is RoHS non-compliant and REACH affected. Selection of this part requires verification that the application design permits non-compliant component usage.

Frequently Asked Questions (FAQ)

Q: Can RC0402FR-072K49L be used as a direct replacement for RC1005F2491CS?

A: Yes. RC0402FR-072K49L maintains identical electrical specifications (2.49 kOhms ±1%, 0.063W, ±100ppm/°C) and operates across the same temperature range (-55°C to 155°C). The difference in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) does not affect circuit functionality.

Q: What is the advantage of using ERJ-2RKF2491X over the primary part?

A: ERJ-2RKF2491X provides a higher power rating of 0.1W (1/10W) compared to 0.063W. All other electrical parameters remain identical. The increased power rating provides additional thermal margin in applications where resistor power dissipation approaches the component limit.

Q: Are the automotive-qualified parts (AC0402FR-072K49L, CRCW04022K49FKED, RMCF0402FT2K49) suitable for non-automotive applications?

A: Yes. Automotive-qualified components meet or exceed standard industrial specifications. AEC-Q200 certification indicates enhanced reliability testing and qualification. These parts function identically to non-automotive equivalents in standard applications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on tape segments in smaller quantities, appropriate for lower-volume production or prototyping. Electrical and mechanical specifications are identical.

Q: Can CRCW04022K49FKTD be used if RoHS compliance is required?

A: No. CRCW04022K49FKTD is RoHS non-compliant and REACH affected. Applications requiring RoHS3 compliance must use alternative parts such as RC0402FR-072K49L, AC0402FR-072K49L, CRCW04022K49FKED, RMCF0402FT2K49, or ERJ-2RKF2491X.

Q: Are all substitute parts rated for the same operating temperature range?

A: Yes. All listed substitute parts operate across the identical temperature range of -55°C to 155°C with matching temperature coefficient of ±100ppm/°C.

Q: What does MSL 1 (Unlimited) moisture sensitivity rating mean?

A: MSL 1 indicates the component requires no special moisture protection during storage or handling. The component can be stored indefinitely without desiccant packaging or environmental controls.