Equivalent & Substitute Parts for RMCS0805FT649R

Part Overview

The RMCS0805FT649R is a 649 Ohm ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This component is classified as Active status and is RoHS3 compliant. Substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and specific application requirements such as automotive qualification or enhanced moisture resistance.

Substiute Parts

RMCS0805FT649R

Stackpole Electronics IncIn Stock: 945RMCS0805FT649R Datasheet

Current PartRFQ

AC0805FR-07649RL

YAGEOIn Stock: 6107AC0805FR-07649RL Datasheet

MFR RecommendedRFQ

CRCW0805649RFKEA

Vishay DaleIn Stock: 17199CRCW0805649RFKEA Datasheet

MFR RecommendedRFQ

ERJ-6ENF6490V

Panasonic Electronic ComponentsIn Stock: 30132ERJ-6ENF6490V Datasheet

MFR RecommendedRFQ

RC0805FR-07649RL

YAGEOIn Stock: 51349RC0805FR-07649RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS0805FT649R is determined by strict equivalence across the following parameters:

• Resistance value: 649 Ohms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Package: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All listed substitute parts meet these core electrical and mechanical requirements. Differences in features (such as automotive AEC-Q200 qualification or moisture resistance enhancements) represent additional capabilities beyond the base specification and do not disqualify substitution.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are electrically and mechanically equivalent to the RMCS0805FT649R and maintain Active product status with full RoHS3 compliance. Selection among these alternatives should be based on the following criteria:

AC0805FR-07649RL and CRCW0805649RFKEA are qualified to automotive AEC-Q200 standard, making them suitable for applications requiring automotive-grade reliability. ERJ-6ENF6490V also carries AEC-Q200 qualification.

AC0805FR-07649RL and RC0805FR-07649RL include moisture resistance enhancements beyond the base specification. The original RMCS0805FT649R features anti-sulfur protection.

CRCW0805649RFKEA has the lowest maximum seated height at 0.020" (0.50mm), compared to 0.024" (0.60mm) for RMCS0805FT649R and RC0805FR-07649RL, and 0.028" (0.70mm) for ERJ-6ENF6490V. This may be relevant for space-constrained applications.

All parts are available in Tape & Reel packaging and carry unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can AC0805FR-07649RL be used as a direct replacement for RMCS0805FT649R?

A: Yes. Both parts share identical electrical specifications (649 Ohms ±1%, 0.125W), operate across the same temperature range (-55°C ~ 155°C), use 0805 package geometry, and are RoHS3 compliant. AC0805FR-07649RL includes additional automotive AEC-Q200 qualification and moisture resistance, which are supplementary features that do not affect basic substitution compatibility.

Q: What is the difference between the anti-sulfur feature of RMCS0805FT649R and the moisture resistance of AC0805FR-07649RL and RC0805FR-07649RL?

A: Anti-sulfur and moisture resistance are distinct protective features. Anti-sulfur protection addresses corrosion from sulfur-containing environments, while moisture resistance mitigates performance degradation in humid conditions. Both are protective enhancements; the choice depends on the specific environmental exposure of the application.

Q: Are all substitute parts suitable for automotive applications?

A: AC0805FR-07649RL, CRCW0805649RFKEA, and ERJ-6ENF6490V carry AEC-Q200 automotive qualification. RMCS0805FT649R and RC0805FR-07649RL do not list this certification. For automotive applications requiring AEC-Q200 compliance, use one of the three qualified alternatives.

Q: Does the difference in maximum seated height affect PCB design?

A: The seated height variation ranges from 0.020" to 0.028" (0.50mm to 0.70mm). For most applications, this difference is negligible. However, in space-constrained designs with tight vertical clearance requirements, CRCW0805649RFKEA offers the lowest profile at 0.020" (0.50mm).

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

A: Yes. All listed parts are supplied in Tape & Reel (TR) packaging with MSL 1 (Unlimited) rating, ensuring consistent handling and storage requirements across all alternatives.