RC1608J682CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J682CS is a 6.8 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and carries ROHS3 compliance with MSL Level 1 (Unlimited moisture sensitivity rating).

Equivalent and substitute parts are identified when manufacturers discontinue production, inventory becomes unavailable, or design requirements necessitate alternative sourcing. This reference provides direct substitutes with identical electrical specifications and compatible alternatives with enhanced performance characteristics or automotive-grade certifications.

Key Parameters

Parameter	Value	Substitution Relevance
Resistance Value	6.8 kOhms	Critical - must match exactly
Tolerance	±5%	Critical - defines accuracy class
Power Rating	0.1W (1/10W)	Critical - thermal performance requirement
Package Type	0603 (1608 Metric)	Critical - PCB footprint compatibility
Composition	Thick Film	Critical - electrical characteristics and temperature behavior
Temperature Coefficient	±100ppm/°C	Important - frequency stability and drift characteristics
Operating Temperature Range	-55°C to 155°C	Important - environmental performance envelope
RoHS Status	ROHS3 Compliant	Important - regulatory compliance requirement
Moisture Sensitivity Level	MSL 1 (Unlimited)	Important - handling and storage requirements

Substitute Part Grouping Explanation

Substitution logic for the RC1608J682CS is based on strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Critical Matching Parameters:

Resistance value: 6.8 kOhms (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Operating temperature range: -55°C to 155°C minimum (exact match or better required)

Acceptable Variation Parameters:

Tolerance: ±5% (direct substitutes) or ±1% (upgrade substitutes with improved accuracy)
Temperature coefficient: ±100ppm/°C (direct substitutes) or ±200ppm/°C (acceptable for direct substitutes), ±100ppm/°C (upgrade substitutes)
Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (both acceptable for assembly operations)
Features: Moisture Resistant (standard), Automotive AEC-Q200 (enhanced), High Voltage (enhanced)

Substitution Categories:

Direct Substitutes maintain identical tolerance (±5%) and temperature coefficient specifications:

RC0603JR-076K8L (YAGEO)
RMCF0603JT6K80 (Stackpole Electronics Inc)
AC0603JR-076K8L (YAGEO)
ERJ-3GEYJ682V (Panasonic Electronic Components)

Upgrade Substitutes provide improved tolerance (±1%) or enhanced automotive certification while maintaining all critical electrical parameters:

CRG0603F6K8 (TE Connectivity Passive Product)
ERJ-3EKF6801V (Panasonic Electronic Components)
KTR03EZPF6801 (Rohm Semiconductor)
RC0603FR-076K8L (YAGEO)
RMCF0603FT6K80 (Stackpole Electronics Inc)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range	Package	Features	RoHS Status	MSL
RC1608J682CS	Samsung Electro-Mechanics	6.8 kΩ	±5%	0.1	±100	-55 to 155°C	0603	Moisture Resistant	ROHS3	1
RC0603JR-076K8L	YAGEO	6.8 kΩ	±5%	0.1	±100	-55 to 155°C	0603	Moisture Resistant	ROHS3	1
RMCF0603JT6K80	Stackpole Electronics Inc	6.8 kΩ	±5%	0.1	±200	-55 to 155°C	0603	Automotive AEC-Q200	ROHS3	1
AC0603JR-076K8L	YAGEO	6.8 kΩ	±5%	0.1	±100	-55 to 155°C	0603	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
CRG0603F6K8	TE Connectivity Passive Product	6.8 kΩ	±1%	0.1	±100	-55 to 155°C	0603	None specified	ROHS3	1
ERJ-3EKF6801V	Panasonic Electronic Components	6.8 kΩ	±1%	0.1	±100	-55 to 155°C	0603	Automotive AEC-Q200	ROHS3	1
ERJ-3GEYJ682V	Panasonic Electronic Components	6.8 kΩ	±5%	0.1	±200	-55 to 155°C	0603	Automotive AEC-Q200	ROHS3	1
KTR03EZPF6801	Rohm Semiconductor	6.8 kΩ	±1%	0.1	±100	-55 to 155°C	0603	Automotive AEC-Q200, High Voltage	ROHS3	1
RC0603FR-076K8L	YAGEO	6.8 kΩ	±1%	0.1	±100	-55 to 155°C	0603	Moisture Resistant	ROHS3	1
RMCF0603FT6K80	Stackpole Electronics Inc	6.8 kΩ	±1%	0.1	±100	-55 to 155°C	0603	Automotive AEC-Q200	ROHS3	1

Engineering Selection Recommendations

For Direct Substitution (Identical Specifications):

RC0603JR-076K8L from YAGEO provides direct electrical and mechanical equivalence to the RC1608J682CS. Both components share ±5% tolerance, ±100ppm/°C temperature coefficient, and moisture-resistant thick film construction. This substitute is suitable for applications where the original Samsung component is unavailable and no performance enhancement is required. ROHS3 compliance and MSL Level 1 rating are maintained.

AC0603JR-076K8L from YAGEO offers direct substitution with the addition of Automotive AEC-Q200 certification. This part maintains ±5% tolerance and ±100ppm/°C temperature coefficient while adding automotive-grade reliability qualification. Selection of this part is appropriate when designs require automotive-qualified components without tolerance or temperature coefficient changes.

RMCF0603JT6K80 from Stackpole Electronics Inc provides direct substitution with Automotive AEC-Q200 certification. The temperature coefficient specification is ±200ppm/°C, which represents acceptable variation for direct substitution purposes. This part is suitable for automotive applications requiring AEC-Q200 qualification.

ERJ-3GEYJ682V from Panasonic Electronic Components maintains ±5% tolerance specification with Automotive AEC-Q200 certification. Temperature coefficient is specified as ±200ppm/°C. This part is appropriate for automotive designs requiring direct tolerance matching.

For Upgrade Substitution (Enhanced Performance):

CRG0603F6K8 from TE Connectivity Passive Product provides improved tolerance specification of ±1% while maintaining all other critical parameters including ±100ppm/°C temperature coefficient. This upgrade is suitable for applications requiring higher accuracy without changing thermal characteristics.

RC0603FR-076K8L from YAGEO offers ±1% tolerance with moisture-resistant features and ±100ppm/°C temperature coefficient. This upgrade maintains the moisture-resistant characteristic of the original part while improving accuracy.

ERJ-3EKF6801V from Panasonic Electronic Components combines ±1% tolerance with Automotive AEC-Q200 certification and ±100ppm/°C temperature coefficient. This upgrade is appropriate for automotive applications requiring improved accuracy.

KTR03EZPF6801 from Rohm Semiconductor provides ±1% tolerance with Automotive AEC-Q200 certification and High Voltage features. Temperature coefficient is ±100ppm/°C. This upgrade is suitable for automotive applications with high-voltage requirements and improved accuracy needs.

RMCF0603FT6K80 from Stackpole Electronics Inc offers ±1% tolerance with Automotive AEC-Q200 certification and ±100ppm/°C temperature coefficient. This upgrade is appropriate for automotive designs requiring improved accuracy.

Compliance Considerations:

All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring regulatory alignment with the original RC1608J682CS specification. No compliance degradation occurs with any listed substitute.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a substitute for the ±5% RC1608J682CS?

A: Yes. Upgrade substitutes with ±1% tolerance are fully compatible with the RC1608J682CS. The ±1% tolerance represents improved accuracy and is a superset of the ±5% specification. Applications designed for ±5% tolerance will function correctly with ±1% components. The tighter tolerance may provide performance benefits in precision circuits.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain identical tolerance (±5%) and temperature coefficient (±100ppm/°C) specifications as the RC1608J682CS. Upgrade substitutes improve one or more parameters, typically offering ±1% tolerance or enhanced automotive AEC-Q200 certification. Both categories are electrically and mechanically compatible with the original part.

Q: Are Automotive AEC-Q200 certified parts suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 certification indicates enhanced reliability qualification and stricter manufacturing controls. These parts exceed standard industrial requirements and are fully suitable for non-automotive applications. Using AEC-Q200 certified components in non-automotive designs provides additional reliability margin without penalty.

Q: Does the temperature coefficient difference between ±100ppm/°C and ±200ppm/°C affect substitution compatibility?

A: The temperature coefficient specification defines resistance drift over temperature range. The RC1608J682CS specifies ±100ppm/°C. Direct substitutes with ±200ppm/°C (such as RMCF0603JT6K80 and ERJ-3GEYJ682V) represent acceptable variation for direct substitution. Applications designed for ±100ppm/°C will tolerate ±200ppm/°C performance. For applications requiring strict temperature stability, select substitutes with ±100ppm/°C specification.

Q: Can I mix packaging formats (Tape & Reel vs. Cut Tape) in production?

A: Yes. Both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats are compatible for assembly operations. Packaging format selection depends on manufacturing equipment and process requirements, not electrical compatibility. The RC0603JR-076K8L uses Cut Tape & Digi-Reel® packaging while the RC1608J682CS uses Tape & Reel; both are electrically and mechanically identical.

Q: What does MSL Level 1 (Unlimited) mean for component handling?

A: MSL Level 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This classification applies to all listed substitute parts. No baking or desiccant storage is required before assembly.

Q: Are there any size or footprint differences between the 0603 packages listed?

A: All listed parts use 0603 (1608 Metric) package specification. Standard dimensions are 0.063" L x 0.031" W (1.60mm x 0.80mm). RMCF series parts specify 0.061" L x 0.031" W (1.55mm x 0.80mm), which represents minor dimensional variation within 0603 package tolerance. Both dimensions are compatible with standard 0603 PCB footprints.

Q: Which substitute part offers the best overall compatibility?

A: RC0603JR-076K8L from YAGEO provides direct electrical and mechanical equivalence with identical tolerance and temperature coefficient specifications. This part is the most direct replacement for the RC1608J682CS. For applications requiring automotive qualification, AC0603JR-076K8L or ERJ-3GEYJ682V provide equivalent performance with AEC-Q200 certification.

Q: Can I use these substitutes in high-reliability applications?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating. For high-reliability applications, select parts with Automotive AEC-Q200 certification (AC0603JR-076K8L, RMCF0603JT6K80, ERJ-3EKF6801V, KTR03EZPF6801, RMCF0603FT6K80, ERJ-3GEYJ682V) or upgrade to ±1% tolerance parts (CRG0603F6K8, ERJ-3EKF6801V, KTR03EZPF6801, RC0603FR-076K8L, RMCF0603FT6K80). These options provide enhanced reliability qualification and improved accuracy.

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