RMCS0805FT2K49 Equivalent & Substitute Parts

Part Overview

The RMCS0805FT2K49 is a 2.49 kOhms ±1% 0.125W chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur thick film resistor operates across -55°C to 155°C and is ROHS3 compliant with unlimited moisture sensitivity level. The part is currently active in production. Substitute parts are necessary to address supply availability, specific application requirements such as automotive qualification, or enhanced power ratings while maintaining electrical and mechanical compatibility.

Substiute Parts

RMCS0805FT2K49

Stackpole Electronics IncIn Stock: 841RMCS0805FT2K49 Datasheet

Current PartRFQ

RMCF0805FT2K49

Stackpole Electronics IncIn Stock: 136102RMCF0805FT2K49 Datasheet

MFR RecommendedRFQ

CRCW08052K49FKEA

Vishay DaleIn Stock: 31620CRCW08052K49FKEA Datasheet

MFR RecommendedRFQ

CRCW08052K49FKEAHP

Vishay DaleIn Stock: 4353CRCW08052K49FKEAHP Datasheet

MFR RecommendedRFQ

CRCW08052K49FKTA

Vishay DaleIn Stock: 17310CRCW08052K49FKTA Datasheet

MFR RecommendedRFQ

ERJ-6ENF2491V

Panasonic Electronic ComponentsIn Stock: 135305ERJ-6ENF2491V Datasheet

MFR RecommendedRFQ

RC0805FR-072K49L

YAGEOIn Stock: 25494RC0805FR-072K49L Datasheet

MFR RecommendedRFQ

RCS08052K49FKEA

Vishay DaleIn Stock: 10926RCS08052K49FKEA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RMCS0805FT2K49 is determined by strict equivalence across the following parameters:

• Resistance value: 2.49 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Number of Terminations: 2
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories based on power rating:

Category 1: Standard 0.125W (1/8W) Rating — Direct electrical and mechanical equivalents with identical power dissipation capability.

Category 2: Enhanced 0.5W (1/2W) Rating — Parts with higher power rating in the same 0805 package, suitable for applications requiring greater thermal headroom while maintaining all other electrical parameters.

All substitute parts maintain ROHS3 compliance, unlimited MSL rating, and the specified operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

For Standard 0.125W Applications:

RMCF0805FT2K49 (Stackpole Electronics Inc) is the manufacturer-recommended substitute, offering automotive AEC-Q200 qualification with identical electrical specifications and ROHS3 compliance.

CRCW08052K49FKEA (Vishay Dale) provides automotive AEC-Q200 qualification with ROHS3 compliance and is available in high volume.

ERJ-6ENF2491V (Panasonic Electronic Components) offers automotive AEC-Q200 qualification with ROHS3 compliance and high inventory availability.

RC0805FR-072K49L (YAGEO) provides ROHS3 compliance with moisture-resistant construction and is suitable for non-automotive applications requiring standard 0.125W rating.

For Enhanced 0.5W Applications:

CRCW08052K49FKEAHP (Vishay Dale) and RCS08052K49FKEA (Vishay Dale) both provide 0.5W power rating with automotive AEC-Q200 qualification, pulse withstanding capability, and ROHS3 compliance. These are suitable for applications requiring higher thermal margin within the 0805 package footprint.

Compliance Considerations:

CRCW08052K49FKTA (Vishay Dale) is RoHS non-compliant and REACH affected; use only in applications where such compliance is not required.

All other substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part specification.

Frequently Asked Questions (FAQ)

Q: Can RMCS0805FT2K49 be replaced with any 2.49 kOhm 0805 resistor?

A: No. Substitutes must maintain ±1% tolerance, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and unlimited MSL rating. Package must be 0805 (2012 Metric) with 2 terminations.

Q: What is the difference between 0.125W and 0.5W rated substitutes?

A: Power rating determines maximum continuous power dissipation. 0.5W rated parts (CRCW08052K49FKEAHP, RCS08052K49FKEA) provide higher thermal capacity in the same 0805 footprint. Use 0.5W parts only if circuit design requires power dissipation exceeding 0.125W.

Q: Are automotive AEC-Q200 qualified parts necessary?

A: AEC-Q200 qualification is required only for automotive applications. Standard industrial applications can use non-qualified equivalents such as RC0805FR-072K49L.

Q: What is the difference between anti-sulfur and moisture-resistant features?

A: Anti-sulfur construction (RMCS0805FT2K49) protects against sulfur contamination in high-sulfur environments. Moisture-resistant construction (RC0805FR-072K49L) provides enhanced protection against humidity. Both are thick film compositions with identical electrical performance.

Q: Can CRCW08052K49FKTA be used in new designs?

A: CRCW08052K49FKTA is RoHS non-compliant and REACH affected. Use only in legacy designs or applications where such compliance is not mandated. For new designs, select ROHS3 compliant alternatives.

Q: What packaging options are available?

A: Substitutes are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. Packaging selection depends on assembly process requirements and volume. Electrical and mechanical specifications remain identical across packaging options.

Q: Are all substitutes pin-compatible?

A: Yes. All substitutes maintain 2 terminations in 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W). Height variations (0.020" to 0.028" seated maximum) are within standard PCB assembly tolerances.