RC1608F682CS Equivalent & Substitute Parts

Part Overview

The RC1608F682CS is a 6.8 kOhms ±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 and is RoHS3 compliant with moisture resistant properties. The RC1608F682CS serves as a standard general-purpose resistor for applications requiring precision resistive elements in compact surface-mount form factors. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit designs.

Key Parameters

Parameter	Value
Resistance	6.8 kOhms
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 ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC1608F682CS are classified into three categories based on functional equivalence and application suitability:

Direct Substitutes share identical electrical specifications (6.8 kOhms ±1%, 0.1W), mechanical dimensions (0603 package), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). These parts are functionally interchangeable in standard applications without design modification.

Upgrade Substitutes maintain all core electrical and mechanical parameters while adding enhanced features such as Automotive AEC-Q200 certification and high voltage capability. These parts are suitable for applications requiring automotive-grade reliability or enhanced environmental performance.

Similar Substitutes match all critical electrical and mechanical specifications but may include additional certifications (Automotive AEC-Q200), enhanced features (anti-sulfur coating), or minor dimensional variations within the 0603 package family. These parts are compatible with the original design while offering supplementary performance characteristics.

The following parameters determine substitution eligibility:

Resistance value: 6.8 kOhms
Tolerance: ±1%
Power rating: 0.1W
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature: -55°C ~ 155°C
Moisture sensitivity: MSL 1

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	Product Status
RC1608F682CS	Samsung Electro-Mechanics	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant	Active
CR0603-FX-6801ELF	Bourns Inc.	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant	Active
CRG0603F6K8	TE Connectivity Passive Product	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	—	ROHS3 Compliant	Active
RC0603FR-076K8L	YAGEO	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant	Active
KTR03EZPF6801	Rohm Semiconductor	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	ROHS3 Compliant	Active
AC0603FR-076K8L	YAGEO	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3 Compliant	Active
AF0603FR-076K8L	YAGEO	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur, Automotive AEC-Q200	ROHS3 Compliant	Active
CRCW06036K80FKEA	Vishay Dale	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	Active
CRCW06036K80FKEB	Vishay Dale	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	Discontinued at DiGi Electronics
CRCW06036K80FKTA	Vishay Dale	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS non-compliant	Active
ERJ-3EKF6801V	Panasonic Electronic Components	6.8 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Standard Applications (Non-Automotive): CR0603-FX-6801ELF (Bourns Inc.), RC0603FR-076K8L (YAGEO), and CRG0603F6K8 (TE Connectivity) are direct functional equivalents to the RC1608F682CS. All three parts maintain identical electrical specifications, 0603 package dimensions, and RoHS3 compliance. These selections are appropriate for general-purpose circuit applications where automotive certification is not required.

For Automotive Applications: KTR03EZPF6801 (Rohm Semiconductor), AC0603FR-076K8L (YAGEO), AF0603FR-076K8L (YAGEO), CRCW06036K80FKEA (Vishay Dale), and ERJ-3EKF6801V (Panasonic Electronic Components) are qualified to Automotive AEC-Q200 standard. These parts are suitable for automotive circuit designs requiring enhanced reliability and environmental performance. All maintain the core 6.8 kOhms ±1%, 0.1W, 0603 package specifications with RoHS3 compliance.

Compliance Considerations: CRCW06036K80FKTA (Vishay Dale) is marked as RoHS non-compliant and should not be selected for applications requiring RoHS3 compliance. CRCW06036K80FKEB (Vishay Dale) is discontinued at DiGi Electronics and should not be considered for new designs requiring long-term supply availability.

Recommended Primary Substitutes: CR0603-FX-6801ELF and RC0603FR-076K8L are recommended as primary substitutes for the RC1608F682CS due to active product status, RoHS3 compliance, moisture resistant properties, and high inventory availability.

Frequently Asked Questions (FAQ)

Q: Can all listed substitute parts be used interchangeably with the RC1608F682CS?

A: Direct substitutes (CR0603-FX-6801ELF, CRG0603F6K8, RC0603FR-076K8L) are functionally interchangeable. Upgrade and similar substitutes with Automotive AEC-Q200 certification are also electrically and mechanically compatible but include additional performance features. CRCW06036K80FKTA should not be used due to RoHS non-compliance. CRCW06036K80FKEB is discontinued and not recommended for new designs.

Q: What is the significance of the 0603 package designation?

A: The 0603 package (1608 Metric) is the physical form factor that determines component size and land pattern on printed circuit boards. All listed substitute parts use the identical 0603 package with dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm), ensuring mechanical compatibility with existing PCB designs. Minor dimensional variations exist in some Vishay Dale parts (0.061" L x 0.033" W or 0.063" L x 0.033" W) but remain within the 0603 package family.

Q: Are there differences in moisture resistance between substitute parts?

A: The RC1608F682CS, CR0603-FX-6801ELF, and RC0603FR-076K8L are explicitly specified as moisture resistant. CRG0603F6K8 does not list moisture resistance as a feature. All parts maintain Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity concerns during storage or handling. For applications in high-humidity environments, moisture-resistant variants are preferred.

Q: What does Automotive AEC-Q200 certification indicate?

A: Automotive AEC-Q200 certification indicates the part meets automotive industry reliability and environmental stress testing standards. Parts with this certification (KTR03EZPF6801, AC0603FR-076K8L, AF0603FR-076K8L, CRCW06036K80FKEA, CRCW06036K80FKEB, CRCW06036K80FKTA, ERJ-3EKF6801V) are qualified for automotive applications. The RC1608F682CS does not carry this certification and is suitable for general-purpose applications.

Q: Why is REACH status listed for some parts but not others?

A: REACH status indicates compliance with European chemical regulations. Most substitute parts are marked as "REACH Unaffected" or "REACH Unaffected," indicating no regulatory concerns. CRG0603F6K8 is marked as "Vendor Undefined," and CRCW06036K80FKTA is marked as "REACH Affected," indicating potential regulatory considerations for specific applications or regions.

Q: Can the RC1608F682CS be replaced with a part having different packaging?

A: No. All substitute parts listed maintain the 0603 (1608 Metric) package format. Substitution with parts in different packages (such as 0805 or 1206) would require PCB redesign and is outside the scope of direct component substitution.

Q: What is the temperature coefficient specification and why does it matter?

A: The temperature coefficient of ±100ppm/°C indicates the resistance value changes by approximately 100 parts per million for each degree Celsius change in operating temperature. All listed parts share this specification, ensuring consistent thermal performance across the -55°C to 155°C operating range. This parameter is critical for precision analog circuits where temperature stability is required.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Inventory levels vary significantly among substitutes. RC0603FR-076K8L (YAGEO) has 49,839 pieces in stock, ERJ-3EKF6801V (Panasonic) has 317,116 pieces, and CR0603-FX-6801ELF (Bourns) has 78,459 pieces available. CRG0603F6K8 (TE Connectivity) has lower availability at 6,659 pieces. For high-volume production, parts with higher inventory levels reduce supply chain risk.

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