RC1608F3571CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F3571CS is a 3.57 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation and operates across the temperature range of -55°C to 155°C. The component is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and is currently in active production status with 683 pieces available in inventory.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design specifications allow for alternative qualified sources that meet identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Resistance	3.57 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

Substitution eligibility for the RC1608F3571CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Resistance value: 3.57 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

Package type: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Number of terminations: 2 (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (preferred for new designs)
REACH Status: REACH Unaffected (preferred for new designs)

All substitute parts listed below meet these core electrical and mechanical requirements. Additional features such as automotive AEC-Q200 qualification represent enhanced capability and do not disqualify a part from substitution in non-automotive applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	RoHS Status	MSL	Inventory (Pcs)
RC1608F3571CS	Samsung Electro-Mechanics	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	683
CR0603-FX-3571ELF	Bourns Inc.	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	20092
RC0603FR-073K57L	YAGEO	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	83918
AC0603FR-073K57L	YAGEO	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	19722
CRCW06033K57FKEA	Vishay Dale	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	28009
CRCW06033K57FKTA	Vishay Dale	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	RoHS non-compliant	1	5745
ERJ-3EKF3571V	Panasonic Electronic Components	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	45471
RMCF0603FT3K57	Stackpole Electronics Inc	3.57 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	ROHS3	1	109253

Engineering Selection Recommendations

Primary Substitutes (ROHS3 Compliant, REACH Unaffected):

The following parts are direct equivalents with full compliance alignment to the RC1608F3571CS:

CR0603-FX-3571ELF (Bourns Inc.) – 20,092 units in stock
RC0603FR-073K57L (YAGEO) – 83,918 units in stock
RMCF0603FT3K57 (Stackpole Electronics Inc) – 109,253 units in stock

These three parts meet all electrical, mechanical, and compliance requirements without exception. Selection among these should be based on supply availability, lead time, and procurement cost.

Secondary Substitutes (ROHS3 Compliant with AEC-Q200 Automotive Qualification):

The following parts exceed the base specification with automotive-grade qualification:

AC0603FR-073K57L (YAGEO) – 19,722 units in stock
CRCW06033K57FKEA (Vishay Dale) – 28,009 units in stock
ERJ-3EKF3571V (Panasonic Electronic Components) – 45,471 units in stock

These parts are suitable for use in non-automotive applications and provide enhanced reliability margin through AEC-Q200 qualification. They are fully ROHS3 compliant and REACH unaffected.

Not Recommended for New Designs:

CRCW06033K57FKTA (Vishay Dale) – This part is RoHS non-compliant and REACH affected. While electrically and mechanically equivalent, it does not meet current regulatory compliance requirements for new product designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC0603FR-073K57L for RC1608F3571CS in my design?

A: Yes. RC0603FR-073K57L (YAGEO) is a direct electrical and mechanical equivalent. Both parts share identical resistance (3.57 kΩ), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), operating range (-55°C to 155°C), and compliance status (ROHS3 compliant, REACH unaffected). No design changes are required.

Q: What is the difference between the standard RC series and the automotive AC series from YAGEO?

A: Both RC0603FR-073K57L and AC0603FR-073K57L meet identical electrical and mechanical specifications for the 3.57 kΩ ±1% 0.1W 0603 resistor. The AC series includes AEC-Q200 automotive qualification, which represents additional testing and reliability validation. For non-automotive applications, both parts are functionally equivalent. The AC series may be preferred when enhanced reliability documentation is required.

Q: Are there any physical dimension differences between these substitute parts?

A: The primary substitute parts (CR0603-FX-3571ELF, RC0603FR-073K57L, ERJ-3EKF3571V, RMCF0603FT3K57) all specify 0.063" L x 0.031" W (1.60mm x 0.80mm) with maximum seated height of 0.022" (0.55mm), matching the RC1608F3571CS exactly. CRCW06033K57FKEA and CRCW06033K57FKTA from Vishay Dale show minor dimensional variations (0.061" or 0.063" L x 0.033" W, 0.020" max height) within the 0603 package tolerance band. These variations are within standard PCB pad design tolerances and do not affect interchangeability.

Q: Which substitute part has the highest inventory availability?

A: RMCF0603FT3K57 (Stackpole Electronics Inc) has the highest inventory with 109,253 units in stock, followed by RC0603FR-073K57L (YAGEO) with 83,918 units. Both are ROHS3 compliant and suitable for immediate procurement.

Q: Can I use CRCW06033K57FKTA as a substitute?

A: CRCW06033K57FKTA is electrically and mechanically equivalent but is not recommended for new designs. This part is RoHS non-compliant and REACH affected, which may violate current regulatory requirements depending on your application and target market. Use CRCW06033K57FKEA (ROHS3 compliant variant) instead.

Q: Do all these parts have the same moisture sensitivity level?

A: Yes. All listed substitute parts, including the main part RC1608F3571CS, have MSL 1 (Unlimited) moisture sensitivity rating. This indicates no special moisture control measures are required during storage, handling, or assembly.

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

A: All parts specified have a temperature coefficient of ±100ppm/°C. This parameter defines how much the resistance value changes per degree Celsius change in operating temperature. The ±100ppm/°C specification ensures that resistance drift across the -55°C to 155°C operating range remains within acceptable limits for circuit design. All substitute parts match this specification exactly.

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