RC1608F2051CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F2051CS is a 2.05 kOhms ±1% 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 is RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity rating).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application certifications such as automotive AEC-Q200 qualification.

Key Parameters

Parameter	Value
Resistance	2.05 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 RC1608F2051CS are classified based on strict electrical and mechanical parameter matching:

Core Substitution Criteria:

Resistance value: 2.05 kOhms (exact match required)
Tolerance: ±1% (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)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)
Terminations: 2 (exact match required)

Substitution Categories:

Direct Equivalents maintain all electrical and mechanical specifications with identical feature sets:

CR0603-FX-2051ELF (Bourns Inc.)
RC0603FR-072K05L (YAGEO)

Similar Parts meet all core electrical and mechanical requirements but include additional automotive AEC-Q200 certification:

AC0603FR-072K05L (YAGEO)
CRCW06032K05FKEA (Vishay Dale)
CRCW06032K05FKTA (Vishay Dale)
ERJ-3EKF2051V (Panasonic Electronic Components)
RMCF0603FT2K05 (Stackpole Electronics Inc)

All listed substitutes maintain RoHS3 compliance, MSL Level 1 rating, and REACH unaffected status, with the exception of CRCW06032K05FKTA which is RoHS non-compliant and REACH affected.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	RoHS Status	AEC-Q200
RC1608F2051CS	Samsung Electro-Mechanics	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	No
CR0603-FX-2051ELF	Bourns Inc.	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	No
RC0603FR-072K05L	YAGEO	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	No
AC0603FR-072K05L	YAGEO	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	Yes
CRCW06032K05FKEA	Vishay Dale	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	Yes
CRCW06032K05FKTA	Vishay Dale	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Non-compliant	Yes
ERJ-3EKF2051V	Panasonic Electronic Components	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	Yes
RMCF0603FT2K05	Stackpole Electronics Inc	2.05 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	Yes

Engineering Selection Recommendations

For Standard Industrial Applications:

CR0603-FX-2051ELF (Bourns Inc.) and RC0603FR-072K05L (YAGEO) serve as direct functional equivalents to the RC1608F2051CS. Both maintain identical electrical specifications, moisture-resistant thick film construction, and RoHS3 compliance. Selection between these options depends on inventory availability and established supplier relationships.

For Automotive Applications Requiring AEC-Q200 Certification:

AC0603FR-072K05L (YAGEO), CRCW06032K05FKEA (Vishay Dale), ERJ-3EKF2051V (Panasonic Electronic Components), and RMCF0603FT2K05 (Stackpole Electronics Inc) are qualified to AEC-Q200 automotive standards while maintaining all core electrical and mechanical parameters. These parts are suitable for automotive circuit designs where component qualification is mandated.

Compliance Considerations:

CRCW06032K05FKTA (Vishay Dale) is RoHS non-compliant and REACH affected. This part is not suitable for applications requiring RoHS3 compliance or REACH compliance verification.

All other substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the RC1608F2051CS.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-2051ELF replace RC1608F2051CS in any application?

A: CR0603-FX-2051ELF meets all electrical and mechanical specifications of RC1608F2051CS. Both are 2.05 kOhms ±1%, 0.1W, 0603 package, thick film, moisture-resistant components with identical temperature coefficients and operating ranges. Substitution is valid for non-automotive applications where AEC-Q200 certification is not required.

Q: What is the difference between direct equivalents and similar parts in this list?

A: Direct equivalents (CR0603-FX-2051ELF, RC0603FR-072K05L) match all specifications without additional certifications. Similar parts include automotive AEC-Q200 qualification, which adds manufacturing and testing requirements but does not alter the core electrical or mechanical performance of the 2.05 kOhms ±1% 0.1W 0603 resistor.

Q: Is CRCW06032K05FKTA suitable for RoHS3 compliant designs?

A: No. CRCW06032K05FKTA is RoHS non-compliant and REACH affected. For designs requiring RoHS3 compliance, select from CR0603-FX-2051ELF, RC0603FR-072K05L, AC0603FR-072K05L, CRCW06032K05FKEA, ERJ-3EKF2051V, or RMCF0603FT2K05.

Q: Do all substitute parts have the same physical dimensions?

A: All substitute parts are specified as 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance: most parts measure 0.063" L x 0.031" W (1.60mm x 0.80mm), while CRCW06032K05FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm) and CRCW06032K05FKTA measures 0.063" L x 0.033" W (1.60mm x 0.85mm). Height-seated maximum ranges from 0.020" to 0.022" (0.50mm to 0.55mm). Verify PCB footprint compatibility before substitution.

Q: Which substitute part has the highest inventory availability?

A: RMCF0603FT2K05 (Stackpole Electronics Inc) has 108,298 pieces in stock. CR0603-FX-2051ELF (Bourns Inc.) has 65,716 pieces. ERJ-3EKF2051V (Panasonic Electronic Components) has 54,140 pieces. Inventory levels should be confirmed with suppliers for current availability.

Q: Are all substitute parts suitable for the full -55°C to 155°C operating temperature range?

A: Yes. All listed substitute parts are specified for -55°C to 155°C operating temperature range with ±100ppm/°C temperature coefficient, matching the RC1608F2051CS specification.

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