RC1608F6490CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F6490CS is a 649 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with moisture-resistant construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit applications.

Key Parameters

Parameter	Specification
Resistance Value	649 Ohms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	MSL 1 (Unlimited)
RoHS Status	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for the RC1608F6490CS are classified into three categories based on functional equivalence and application suitability:

Direct Equivalents maintain identical electrical and mechanical specifications with full interchangeability. These parts share the same resistance value (649 Ohms), tolerance (±1%), power rating (0.1W), package format (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Direct equivalents are selected when component availability or supply chain requirements necessitate manufacturer substitution without design modification.

Upgrade Options provide enhanced specifications or certifications suitable for applications requiring automotive-grade reliability. These parts maintain core electrical parameters while adding AEC-Q200 automotive qualification or alternative packaging configurations.

Similar Parts share electrical specifications but may include additional features such as automotive AEC-Q200 certification or alternative physical dimensions within acceptable tolerance ranges. These parts are suitable for applications where enhanced environmental or reliability ratings are beneficial.

The substitution logic is based strictly on the following parameters:

Resistance value and tolerance matching
Power rating equivalence
Package / case format compatibility
Temperature coefficient alignment
Operating temperature range coverage
Moisture sensitivity level compatibility
RoHS and REACH compliance status

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	Product Status
RC1608F6490CS	Samsung Electro-Mechanics	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
CR0603-FX-6490ELF	Bourns Inc.	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
RC0603FR-07649RL	YAGEO	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
MCR03ERTF6490	Rohm Semiconductor	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Standard	ROHS3	Discontinued at DiGi Electronics
AC0603FR-07649RL	YAGEO	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	Active
CRCW0603649RFKEA	Vishay Dale	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active
CRCW0603649RFKTA	Vishay Dale	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS Non-compliant	Active
ERJ-3EKF6490V	Panasonic Electronic Components	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active
RMCF0603FT649R	Stackpole Electronics Inc	649 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active

Engineering Selection Recommendations

For Standard Industrial Applications: CR0603-FX-6490ELF (Bourns Inc.) and RC0603FR-07649RL (YAGEO) are direct functional equivalents with active product status and full ROHS3 compliance. Both maintain identical electrical specifications and moisture-resistant construction. Selection between these options is based on supply chain availability and inventory levels.

For Automotive Applications: AC0603FR-07649RL (YAGEO), CRCW0603649RFKEA (Vishay Dale), ERJ-3EKF6490V (Panasonic), and RMCF0603FT649R (Stackpole) are qualified to AEC-Q200 automotive standards. These parts are suitable for automotive-grade circuit designs requiring enhanced reliability certification. All four maintain ROHS3 compliance except CRCW0603649RFKTA, which is RoHS non-compliant and REACH affected.

Avoid in New Designs: MCR03ERTF6490 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs despite active manufacturer status. CRCW0603649RFKTA (Vishay Dale) is RoHS non-compliant and REACH affected, making it unsuitable for applications requiring environmental compliance.

Compliance Verification: All recommended substitutes maintain MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard storage and handling procedures. Verify final application requirements for RoHS3 and REACH compliance before component selection.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-6490ELF replace RC1608F6490CS directly without circuit modification?

A: Yes. CR0603-FX-6490ELF is a direct equivalent with identical resistance (649 Ohms), tolerance (±1%), power rating (0.1W), package format (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). No circuit modification is required.

Q: What is the difference between standard and automotive-qualified substitutes?

A: Automotive-qualified parts (AC0603FR-07649RL, CRCW0603649RFKEA, ERJ-3EKF6490V, RMCF0603FT649R) carry AEC-Q200 certification, indicating compliance with automotive reliability and environmental stress testing standards. Standard parts (CR0603-FX-6490ELF, RC0603FR-07649RL) do not carry this certification. Selection depends on application requirements.

Q: Are there physical dimension differences between substitute parts?

A: Minor dimension variations exist within acceptable tolerance ranges. CRCW0603649RFKEA and CRCW0603649RFKTA have slightly different length (1.55mm vs 1.60mm) and height (0.50mm vs 0.55mm) specifications compared to the main part. These variations remain within 0603 package specifications and do not affect PCB footprint compatibility.

Q: Why is CRCW0603649RFKTA not recommended despite active status?

A: CRCW0603649RFKTA is RoHS non-compliant and REACH affected. Applications requiring environmental compliance or customer specifications mandating ROHS3 compliance cannot use this part. CRCW0603649RFKEA is the compliant alternative from the same manufacturer.

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

A: MSL 1 indicates the component has unlimited shelf life without moisture bake-out requirements. All substitute parts share this specification, ensuring compatibility with standard storage and handling procedures without special environmental controls.

Q: Can MCR03ERTF6490 be used as a substitute?

A: MCR03ERTF6490 is discontinued at DiGi Electronics and should not be selected for new designs. While electrically equivalent, discontinued status creates supply chain risk and long-term availability concerns.

Q: Which substitute has the highest inventory availability?

A: ERJ-3EKF6490V (Panasonic) has the highest inventory at 90,138 pieces. RC0603FR-07649RL (YAGEO) has 63,953 pieces. Both provide excellent supply chain security for high-volume applications.

Q: Are all substitutes suitable for the full -55°C to 155°C temperature range?

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

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message