RC1608J302CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J302CS is a 3 kOhms ±5% 0.1W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is classified as Active product status with 974 pieces currently in stock. The RC1608J302CS serves as a standard general-purpose resistor for consumer and industrial electronic applications requiring moisture-resistant thick film construction.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size, termination count), and environmental operating parameters. Direct substitutes maintain identical or superior performance characteristics while alternative options provide enhanced specifications such as improved tolerance or automotive-grade certification.

Key Parameters

Parameter	Value
Resistance	3 kOhms
Tolerance	±5%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC1608J302CS are classified into two categories based on substitution compatibility:

Direct Equivalents (Same Electrical & Mechanical Specifications)

Direct equivalents maintain identical resistance (3 kOhms), tolerance (±5%), power rating (0.1W), package format (0603), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). These parts are interchangeable without circuit redesign or performance degradation.

Key parameters for direct equivalence:

Resistance: 3 kOhms
Tolerance: ±5%
Power: 0.1W
Package: 0603 (1608 Metric)
Temperature Coefficient: ±100ppm/°C
Operating Temperature: -55°C ~ 155°C

Upgrade Options (Enhanced Specifications)

Upgrade parts provide improved tolerance (±1% versus ±5%) or automotive-grade certification (AEC-Q200) while maintaining the same resistance value, power rating, package format, and operating temperature range. These components are suitable for applications requiring tighter tolerance control or automotive reliability standards.

Key parameters for upgrade compatibility:

Resistance: 3 kOhms (maintained)
Power: 0.1W (maintained)
Package: 0603 (1608 Metric) (maintained)
Operating Temperature: -55°C ~ 155°C (maintained)
Enhanced tolerance: ±1% (improved from ±5%)
Optional AEC-Q200 automotive certification

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	Features	Product Status
RC1608J302CS	Samsung Electro-Mechanics	3 kOhms	±5%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RC0603JR-073KL	YAGEO	3 kOhms	±5%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RMCF0603JT3K00	Stackpole Electronics Inc	3 kOhms	±5%	0.1W	0603	±200ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CRG0603F3K0	TE Connectivity Passive Product	3 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	None	Active
ERJ-3EKF3001V	Panasonic Electronic Components	3 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
ERJ-3GEYJ302V	Panasonic Electronic Components	3 kOhms	±5%	0.1W	0603	±200ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
KTR03EZPF3001	Rohm Semiconductor	3 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	Active
MCR03ERTJ302	Rohm Semiconductor	3 kOhms	±5%	0.1W	0603	±200ppm/°C	-55°C ~ 155°C	None	Discontinued at DiGi Electronics
RC0603FR-073KL	YAGEO	3 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RMCF0603FT3K00	Stackpole Electronics Inc	3 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
RMCF0603JG3K00	Stackpole Electronics Inc	3 kOhms	±5%	0.1W	0603	±200ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active

Engineering Selection Recommendations

Direct Substitution (No Circuit Modification Required)

RC0603JR-073KL (YAGEO) serves as the primary direct equivalent to RC1608J302CS. Both components share identical electrical specifications (3 kOhms ±5%, 0.1W), mechanical package (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). RC0603JR-073KL maintains moisture-resistant thick film construction and ROHS3 compliance. This part is Active status with 105,219 pieces in stock, providing supply continuity.

Automotive-Grade Direct Equivalent

RMCF0603JT3K00 (Stackpole Electronics Inc) and ERJ-3GEYJ302V (Panasonic Electronic Components) provide direct electrical equivalence with added AEC-Q200 automotive certification. Both maintain 3 kOhms ±5% tolerance and 0.1W power rating in 0603 package. Temperature coefficient increases to ±200ppm/°C. These options are suitable for automotive applications or designs requiring automotive-grade component qualification.

Upgrade to ±1% Tolerance

Four upgrade options provide improved tolerance specification (±1% versus ±5%) while maintaining all other critical parameters:

RC0603FR-073KL (YAGEO): Moisture-resistant thick film, Active status, 25,200 pieces in stock
CRG0603F3K0 (TE Connectivity): Standard thick film, Active status, 19,496 pieces in stock
ERJ-3EKF3001V (Panasonic): Automotive AEC-Q200, Active status, 131,792 pieces in stock
RMCF0603FT3K00 (Stackpole): Automotive AEC-Q200, Active status, 2,473,336 pieces in stock
KTR03EZPF3001 (Rohm): Automotive AEC-Q200 with high voltage features, Active status, 979 pieces in stock

All upgrade options maintain 0.1W power rating, 0603 package format, -55°C ~ 155°C operating temperature range, and ROHS3 compliance. Temperature coefficient remains ±100ppm/°C for moisture-resistant and non-automotive variants.

Discontinued Part Consideration

MCR03ERTJ302 (Rohm Semiconductor) is marked as Discontinued at DiGi Electronics. While electrically equivalent to RC1608J302CS (3 kOhms ±5%, 0.1W, 0603 package), this part should not be selected for new designs due to discontinued status. Existing inventory (969 pieces) may be available through alternative distribution channels but long-term supply cannot be assured.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-073KL directly replace RC1608J302CS without circuit modification?

A: Yes. RC0603JR-073KL is a direct equivalent with identical resistance (3 kOhms), tolerance (±5%), power rating (0.1W), package format (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). No circuit redesign is required.

Q: What is the difference between direct equivalents and upgrade options?

A: Direct equivalents maintain all electrical and mechanical specifications of the RC1608J302CS. Upgrade options improve tolerance from ±5% to ±1% or add automotive AEC-Q200 certification while preserving the same resistance value, power rating, package, and operating temperature range. Upgrades are backward-compatible but provide enhanced performance characteristics.

Q: Are automotive-grade parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive-grade parts meet or exceed general industrial specifications. AEC-Q200 certified components such as RMCF0603JT3K00, ERJ-3GEYJ302V, RMCF0603FT3K00, ERJ-3EKF3001V, and KTR03EZPF3001 can be used in non-automotive designs. They provide additional reliability margin and are suitable for applications requiring higher quality assurance standards.

Q: What does ±100ppm/°C versus ±200ppm/°C temperature coefficient mean for substitution?

A: Temperature coefficient indicates resistance change per degree Celsius. ±100ppm/°C represents tighter temperature stability than ±200ppm/°C. For direct substitution, components with ±100ppm/°C (RC1608J302CS specification) can be replaced with ±100ppm/°C equivalents without performance impact. Parts with ±200ppm/°C (RMCF0603JT3K00, ERJ-3GEYJ302V, RMCF0603JG3K00, MCR03ERTJ302) show greater resistance variation across temperature extremes but remain functionally compatible for most applications.

Q: Why do some substitute parts have different physical dimensions (1.60mm vs 1.55mm length)?

A: Stackpole Electronics RMCF series components measure 1.55mm length versus the standard 1.60mm. This minor dimensional variation (0.05mm) falls within typical PCB assembly tolerances and does not affect electrical performance or mechanical compatibility in standard 0603 footprints. Both dimensions are acceptable for 0603 package specifications.

Q: Can I use a ±1% tolerance part in place of a ±5% tolerance part?

A: Yes. A ±1% tolerance part provides tighter resistance control than ±5% and is a suitable upgrade. The circuit will operate within the original design specifications since the actual resistance value will be closer to the nominal 3 kOhms. This substitution improves circuit accuracy without introducing compatibility issues.

Q: What is Moisture Sensitivity Level (MSL) 1 and why does it matter?

A: MSL 1 indicates unlimited moisture sensitivity, meaning the component can be stored indefinitely without special moisture control measures. RC1608J302CS and moisture-resistant equivalents (RC0603JR-073KL, RC0603FR-073KL) carry MSL 1 rating, eliminating moisture-related handling requirements during assembly and storage.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the RC1608J302CS environmental standard. This ensures compatibility with regulatory requirements for restricted hazardous substances in electronic equipment.

Q: Should I avoid MCR03ERTJ302 due to discontinued status?

A: MCR03ERTJ302 is marked as Discontinued at DiGi Electronics and should not be selected for new product designs. While electrically equivalent, discontinued parts present supply chain risk. Select from Active status alternatives such as RC0603JR-073KL, RMCF0603JT3K00, or upgrade options to ensure long-term component availability.

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