RC1608J6R8CS Equivalent & Substitute Parts

Part Overview

The RC1608J6R8CS is a 6.8 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced tolerance specifications.

Key Parameters

Parameter	Value
Resistance	6.8 Ohms
Tolerance	±5%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RC1608J6R8CS is determined by strict equivalence in the following parameters: resistance value (6.8 Ohms), power rating (0.1W), package type (0603 / 1608 Metric), composition (thick film), operating temperature range (-55°C ~ 155°C), and compliance certifications (RoHS3, REACH Unaffected). Tolerance may vary between ±5% and ±1% depending on application requirements. Substitute parts are grouped into two categories:

Upgrade Substitutes (Enhanced Specifications): Parts with ±1% tolerance or automotive AEC-Q200 qualification, offering improved accuracy or reliability for demanding applications while maintaining full electrical and mechanical compatibility.

Similar Substitutes (Equivalent Specifications): Parts with identical ±5% tolerance and moisture-resistant features, providing direct functional equivalence with alternative manufacturer sourcing.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	RoHS3
RC1608J6R8CS	Samsung Electro-Mechanics	6.8 Ω	±5%	0.1	0603	±300	-55 ~ 155	No	Yes
ERJ-3RQF6R8V	Panasonic Electronic Components	6.8 Ω	±1%	0.1	0603	±200	-55 ~ 155	Yes	Yes
ERJ-3RQJ6R8V	Panasonic Electronic Components	6.8 Ω	±5%	0.1	0603	±200	-55 ~ 155	Yes	Yes
KTR03EZPF6R80	Rohm Semiconductor	6.8 Ω	±1%	0.1	0603	±200	-55 ~ 155	Yes	Yes
RMCF0603FT6R80	Stackpole Electronics Inc	6.8 Ω	±1%	0.1	0603	±200	-55 ~ 155	Yes	Yes
RMCF0603JT6R80	Stackpole Electronics Inc	6.8 Ω	±5%	0.1	0603	±200	-55 ~ 155	Yes	Yes
RC0603JR-076R8L	YAGEO	6.8 Ω	±5%	0.1	0603	±200	-55 ~ 155	No	Yes

Engineering Selection Recommendations

For Direct Replacement (Equivalent Functionality): The RC0603JR-076R8L (YAGEO) provides identical electrical specifications and tolerance to the RC1608J6R8CS with moisture-resistant thick film composition. Both parts are RoHS3 compliant and operate across the full -55°C to 155°C temperature range.

For Automotive Applications: The ERJ-3RQJ6R8V (Panasonic), RMCF0603JT6R80 (Stackpole), and ERJ-3RQF6R8V (Panasonic) are qualified to AEC-Q200 automotive standards. The ERJ-3RQJ6R8V and RMCF0603JT6R80 maintain ±5% tolerance matching the original specification, while ERJ-3RQF6R8V offers enhanced ±1% tolerance.

For Enhanced Tolerance Requirements: The ERJ-3RQF6R8V, KTR03EZPF6R80, and RMCF0603FT6R80 provide ±1% tolerance with improved temperature coefficient (±200ppm/°C versus ±300ppm/°C), suitable for precision current-sensing or high-accuracy circuit applications. All three are AEC-Q200 qualified.

For High-Volume Procurement: RMCF0603FT6R80 (Stackpole) offers the largest documented inventory (846,063 pcs), supporting extended lead time requirements and supply chain stability.

All substitute parts maintain identical package dimensions (0603 / 1608 Metric), MSL 1 rating, and RoHS3 compliance, ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can ERJ-3RQF6R8V (±1% tolerance) be used as a direct replacement for RC1608J6R8CS (±5% tolerance)?

A: Yes. The ERJ-3RQF6R8V is electrically and mechanically compatible. The ±1% tolerance is a tighter specification than ±5%, making it suitable for any application accepting the original part. This represents an upgrade in accuracy with no functional compromise.

Q: What is the difference between ERJ-3RQJ6R8V and ERJ-3RQF6R8V?

A: Both are Panasonic ERJ-3R series parts in 0603 package with AEC-Q200 qualification. ERJ-3RQJ6R8V has ±5% tolerance (matching RC1608J6R8CS), while ERJ-3RQF6R8V has ±1% tolerance. Selection depends on circuit tolerance requirements.

Q: Are all substitute parts suitable for automotive applications?

A: ERJ-3RQF6R8V, ERJ-3RQJ6R8V, KTR03EZPF6R80, and RMCF0603JT6R80 carry AEC-Q200 automotive qualification. RC1608J6R8CS and RC0603JR-076R8L do not have this certification. Use AEC-Q200 qualified parts for automotive designs.

Q: Will substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the 0603 (1608 Metric) package with identical land pattern dimensions (0.063" L x 0.031" W / 1.60mm x 0.80mm) and maximum seated height (0.022" / 0.55mm). No PCB redesign is required.

Q: What is the significance of the temperature coefficient difference (±300ppm/°C vs ±200ppm/°C)?

A: The temperature coefficient indicates resistance change per degree Celsius. RC1608J6R8CS has ±300ppm/°C, while most substitutes have ±200ppm/°C. The lower coefficient in substitutes provides better stability across the -55°C to 155°C operating range, beneficial for precision applications.

Q: Is moisture sensitivity different between parts?

A: No. RC1608J6R8CS and all substitute parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity limitations. All parts can be stored and handled without special moisture control requirements.

Q: Can RMCF0603JT6R80 replace RC1608J6R8CS in a current-sensing application?

A: Yes. RMCF0603JT6R80 is specifically designed for current-sensing applications with AEC-Q200 qualification, ±5% tolerance matching the original, and improved temperature coefficient (±200ppm/°C). It is fully compatible for this use case.

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