RMCS0805FT249K Equivalent & Substitute Parts

Part Overview

The RMCS0805FT249K is a 249 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. As an active product with established market availability, equivalent and substitute parts from alternative manufacturers provide design flexibility, supply chain redundancy, and application-specific feature options including automotive AEC-Q200 qualification and enhanced pulse withstanding capabilities.

Substiute Parts

RMCS0805FT249K

Stackpole Electronics IncIn Stock: 1155RMCS0805FT249K Datasheet

Current PartRFQ

RMCF0805FT249K

Stackpole Electronics IncIn Stock: 43561RMCF0805FT249K Datasheet

MFR RecommendedRFQ

CRCW0805249KFKEA

Vishay DaleIn Stock: 31370CRCW0805249KFKEA Datasheet

MFR RecommendedRFQ

CRCW0805249KFKEAHP

Vishay DaleIn Stock: 7203CRCW0805249KFKEAHP Datasheet

MFR RecommendedRFQ

CRCW0805249KFKTA

Vishay DaleIn Stock: 9149CRCW0805249KFKTA Datasheet

MFR RecommendedRFQ

ERJ-6ENF2493V

Panasonic Electronic ComponentsIn Stock: 86860ERJ-6ENF2493V Datasheet

MFR RecommendedRFQ

RC0805FR-07249KL

YAGEOIn Stock: 428955RC0805FR-07249KL Datasheet

MFR RecommendedRFQ

RCS0805249KFKEA

Vishay DaleIn Stock: 2526RCS0805249KFKEA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: resistance value (249 kOhms), tolerance (±1%), package type (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). All identified substitutes meet these core electrical and mechanical requirements.

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

Category 1: 0.125W (1/8W) Rating — Direct electrical equivalents with identical power dissipation capacity. These include RMCF0805FT249K (Stackpole, automotive AEC-Q200), CRCW0805249KFKEA (Vishay Dale, automotive AEC-Q200), CRCW0805249KFKTA (Vishay Dale, automotive AEC-Q200), ERJ-6ENF2493V (Panasonic, automotive AEC-Q200), and RC0805FR-07249KL (YAGEO, moisture resistant).

Category 2: 0.5W (1/2W) Rating — Enhanced power rating substitutes with pulse withstanding capability. These include CRCW0805249KFKEAHP (Vishay Dale) and RCS0805249KFKEA (Vishay Dale). These parts accommodate higher transient power dissipation while maintaining identical resistance, tolerance, package, and temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

For automotive applications requiring AEC-Q200 qualification: RMCF0805FT249K (Stackpole), CRCW0805249KFKEA (Vishay Dale), CRCW0805249KFKTA (Vishay Dale), ERJ-6ENF2493V (Panasonic), CRCW0805249KFKEAHP (Vishay Dale), and RCS0805249KFKEA (Vishay Dale) are all qualified to AEC-Q200 standard.

For applications requiring ROHS3 compliance: RMCF0805FT249K, CRCW0805249KFKEA, ERJ-6ENF2493V, RC0805FR-07249KL, CRCW0805249KFKEAHP, and RCS0805249KFKEA meet ROHS3 requirements. CRCW0805249KFKTA is RoHS non-compliant and REACH affected.

For enhanced transient performance: CRCW0805249KFKEAHP and RCS0805249KFKEA provide 0.5W (1/2W) power rating with pulse withstanding capability, suitable for circuits experiencing temporary power surges while maintaining identical resistance and tolerance specifications.

For moisture-sensitive environments: RC0805FR-07249KL features moisture-resistant construction and offers the highest inventory availability (428,913 units).

For direct equivalent replacement with identical specifications: RMCF0805FT249K provides the closest match as a Stackpole product with automotive qualification and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805249KFKEAHP or RCS0805249KFKEA (0.5W rating) be used as direct replacements for RMCS0805FT249K (0.125W rating)?

A: Yes. The 0.5W variants are electrically compatible substitutes. Higher power rating provides additional design margin for transient conditions. Circuit board layout and thermal management remain unchanged due to identical 0805 package dimensions.

Q: Are all substitute parts available in the same packaging format?

A: No. RMCS0805FT249K, RMCF0805FT249K, CRCW0805249KFKEA, CRCW0805249KFKEAHP, CRCW0805249KFKTA, and RCS0805249KFKEA are supplied in Tape & Reel (TR) format. ERJ-6ENF2493V and RC0805FR-07249KL are supplied in Cut Tape (CT) & Digi-Reel format. Verify packaging requirements for automated assembly processes.

Q: What is the significance of the anti-sulfur feature in RMCS0805FT249K?

A: Anti-sulfur construction protects against sulfur-induced corrosion in high-sulfur environments. Substitute parts with automotive AEC-Q200 qualification incorporate equivalent environmental protection through qualification testing standards.

Q: Is CRCW0805249KFKTA suitable for new designs?

A: CRCW0805249KFKTA is RoHS non-compliant and REACH affected. It is not recommended for new designs or applications requiring regulatory compliance. Use ROHS3-compliant alternatives instead.

Q: Do all substitutes maintain the same temperature coefficient?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range, ensuring equivalent thermal performance across the specified operating envelope.

Q: What is the height difference between substitute parts?

A: Seated heights vary: RMCS0805FT249K (0.60mm), RMCF0805FT249K (0.65mm), CRCW0805249KFKEA (0.50mm), CRCW0805249KFKEAHP (0.50mm), CRCW0805249KFKTA (0.50mm), ERJ-6ENF2493V (0.70mm), RC0805FR-07249KL (0.60mm), RCS0805249KFKEA (0.50mm). Verify clearance requirements for applications with height constraints.