MCS04020C6491FE000 Equivalent & Substitute Parts

Part Overview

The MCS04020C6491FE000 is a 6.49 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by Vishay Beyschlag/Draloric/BC Components. This component is rated for 0.063W (1/16W) power dissipation with anti-sulfur coating and operates across -55°C to 155°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements allow tolerance relaxation, improved precision, or alternative packaging formats while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	6.49 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Electrical Parameters: Resistance value (6.49 kOhms), power rating (0.063W), and composition (thin film) must remain constant. Tolerance may be tightened (lower tolerance value acceptable) but not relaxed beyond ±1%.

Mechanical Parameters: Package type (0402/1005 Metric) and termination count (2) must match. Physical dimensions and height must be compatible with PCB assembly specifications.

Environmental & Compliance: Operating temperature range must cover or exceed -55°C to 155°C. RoHS3 compliance and MSL rating must be maintained or improved.

Temperature Coefficient: May be equal or superior (lower absolute value acceptable).

Substitute parts are grouped into two categories:

Direct Equivalents: Identical tolerance (±1%), same temperature coefficient range, matching all electrical and mechanical specifications.
Upgrade Substitutes: Improved tolerance (±0.1% or ±0.5%), superior temperature coefficient (±25ppm/°C), or enhanced features (anti-sulfur, automotive qualification) while maintaining core compatibility.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	Height Max (mm)	Features
MCS04020C6491FE000	Vishay Beyschlag/Draloric/BC Components	6.49k	±1%	0.063	±50	-55 to 155	0402	0.37	Anti-Sulfur
RT0402FRE076K49L	YAGEO	6.49k	±1%	0.063	±50	-55 to 155	0402	0.35	—
CPF0402B6K49E1	TE Connectivity Passive Product	6.49k	±0.1%	0.063	±25	-55 to 155	0402	0.35	—
RG1005P-6491-B-T5	Susumu	6.49k	±0.1%	0.063	±25	-55 to 155	0402	0.40	Anti-Sulfur, AEC-Q200
RR0510P-6491-D	Susumu	6.49k	±0.5%	0.063	±25	-55 to 125	0402	0.40	—
RT0402BRD076K49L	YAGEO	6.49k	±0.1%	0.063	±25	-55 to 155	0402	0.35	—
RT0402BRE076K49L	YAGEO	6.49k	±0.1%	0.063	±50	-55 to 155	0402	0.35	—
RT0402DRD076K49L	YAGEO	6.49k	±0.5%	0.063	±25	-55 to 155	0402	0.35	—

Engineering Selection Recommendations

Direct Equivalent (Preferred for Drop-In Replacement):

RT0402FRE076K49L (YAGEO) matches the original specification exactly: ±1% tolerance, ±50ppm/°C temperature coefficient, and -55°C to 155°C operating range. This part is suitable for direct substitution without circuit redesign or re-qualification.

Upgrade Options (Enhanced Performance):

CPF0402B6K49E1 (TE Connectivity), RG1005P-6491-B-T5 (Susumu), RT0402BRD076K49L (YAGEO), and RT0402DRD076K49L (YAGEO) offer improved tolerance (±0.1% or ±0.5%) and superior temperature coefficient (±25ppm/°C). These are suitable when circuit design permits tighter tolerance specifications or when enhanced stability is required. RG1005P-6491-B-T5 includes AEC-Q200 automotive qualification and anti-sulfur coating, making it appropriate for automotive or harsh environment applications.

Conditional Substitutes:

RR0510P-6491-D (Susumu) operates at -55°C to 125°C, which is narrower than the original -55°C to 155°C range. This part is suitable only if the application does not require operation above 125°C.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 0402 package compatibility.

Frequently Asked Questions (FAQ)

Q: Can RT0402FRE076K49L replace MCS04020C6491FE000 without any circuit changes?

A: Yes. RT0402FRE076K49L is a direct equivalent with identical electrical specifications (6.49 kOhms ±1%, ±50ppm/°C) and operating temperature range (-55°C to 155°C). No circuit redesign or re-qualification is required.

Q: What is the advantage of using CPF0402B6K49E1 or RG1005P-6491-B-T5 over the original part?

A: Both parts offer ±0.1% tolerance (versus ±1%) and ±25ppm/°C temperature coefficient (versus ±50ppm/°C), providing superior precision and thermal stability. RG1005P-6491-B-T5 additionally includes AEC-Q200 automotive qualification and anti-sulfur coating. These upgrades are beneficial for precision analog circuits or automotive applications.

Q: Is RR0510P-6491-D compatible with the original design?

A: RR0510P-6491-D is mechanically and electrically compatible but has a narrower operating temperature range (-55°C to 125°C versus -55°C to 155°C). Use this part only if your application does not require operation above 125°C.

Q: Do all substitute parts use the same 0402 package?

A: Yes. All listed substitutes use the 0402 (1005 Metric) package with 2 terminations. Physical dimensions are 1.00mm × 0.50mm. Height variations (0.35mm to 0.40mm) are within standard PCB assembly tolerances and do not affect compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance status.

Q: Which substitute should I choose for automotive applications?

A: RG1005P-6491-B-T5 (Susumu) is qualified to AEC-Q200 automotive standard and includes anti-sulfur coating, making it the appropriate choice for automotive or harsh environment applications requiring enhanced reliability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message