RC1608F2211CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F2211CS is a 2.21 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 with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). 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 meeting identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Resistance	2.21 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 to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F2211CS is determined by strict equivalence across the following critical parameters: resistance value (2.21 kOhms), tolerance (±1%), power rating (0.1W), package format (0603 / 1608 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and moisture sensitivity level (MSL 1). All substitute parts listed maintain identical electrical specifications and mechanical dimensions within acceptable tolerances. Packaging format (Tape & Reel or Cut Tape) does not affect electrical or mechanical compatibility. Compliance certifications (ROHS3, REACH status) and automotive qualifications (AEC-Q200) are noted as additional qualifiers but do not disqualify parts from substitution when base electrical parameters match.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	MSL	RoHS Status	AEC-Q200
RC1608F2211CS	Samsung Electro-Mechanics	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	No
CR0603-FX-2211ELF	Bourns Inc.	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	No
RC0603FR-072K21L	YAGEO	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	No
AC0603FR-072K21L	YAGEO	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	Yes
CRCW06032K21FKEA	Vishay Dale	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	Yes
CRCW06032K21FKTA	Vishay Dale	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	RoHS NC	Yes
ERJ-3EKF2211V	Panasonic Electronic Components	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	Yes
RMCF0603FG2K21	Stackpole Electronics Inc	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	Yes
RMCF0603FT2K21	Stackpole Electronics Inc	2.21 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	ROHS3	Yes

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the RC1608F2211CS. Selection among equivalent parts should be based on the following criteria:

ROHS3 Compliance Priority: The RC1608F2211CS is ROHS3 compliant. Substitute parts CR0603-FX-2211ELF, RC0603FR-072K21L, AC0603FR-072K21L, CRCW06032K21FKEA, ERJ-3EKF2211V, RMCF0603FG2K21, and RMCF0603FT2K21 all maintain ROHS3 compliance. The part CRCW06032K21FKTA is RoHS non-compliant and should be selected only when regulatory requirements do not mandate ROHS3 status.

Automotive Applications: For designs requiring AEC-Q200 automotive qualification, select from AC0603FR-072K21L, CRCW06032K21FKEA, CRCW06032K21FKTA, ERJ-3EKF2211V, RMCF0603FG2K21, or RMCF0603FT2K21. The RC1608F2211CS, CR0603-FX-2211ELF, and RC0603FR-072K21L do not carry AEC-Q200 qualification.

Supply Availability: RMCF0603FT2K21 (Stackpole Electronics Inc) offers the highest inventory level at 1,089,176 pieces. ERJ-3EKF2211V (Panasonic) provides 277,921 pieces. CRCW06032K21FKEA (Vishay Dale) offers 47,661 pieces. These options provide optimal supply chain continuity.

Packaging Format: All parts are available in Tape & Reel (TR) format except CRCW06032K21FKEA, which is supplied in Cut Tape (CT) & Digi-Reel format. Packaging selection depends on assembly equipment compatibility and volume requirements.

Frequently Asked Questions (FAQ)

Q: Can RMCF0603FT2K21 be used as a direct replacement for RC1608F2211CS?

A: Yes. Both parts share identical electrical specifications (2.21 kOhms ±1%, 0.1W, ±100ppm/°C, -55°C to 155°C operating range), package format (0603), composition (thick film), and moisture sensitivity level (MSL 1). Both are ROHS3 compliant. The primary difference is manufacturer (Stackpole vs. Samsung) and AEC-Q200 automotive qualification (present in RMCF0603FT2K21, absent in RC1608F2211CS).

Q: What is the difference between RMCF0603FG2K21 and RMCF0603FT2K21?

A: Both parts are manufactured by Stackpole Electronics Inc and share identical electrical and mechanical specifications. The difference lies in internal construction or processing (indicated by the "FG" vs. "FT" designation), but this does not affect electrical performance or compatibility. RMCF0603FT2K21 has significantly higher inventory availability (1,089,176 vs. 10,979 pieces).

Q: Is CRCW06032K21FKTA suitable for new designs?

A: CRCW06032K21FKTA is RoHS non-compliant and REACH affected, whereas the primary part RC1608F2211CS is ROHS3 compliant and REACH unaffected. This part should be used only in applications where RoHS compliance is not required. For new designs, ROHS3-compliant alternatives are recommended.

Q: Do all substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the 0603 (1608 Metric) package format with identical land pattern requirements. Physical dimensions are equivalent within standard manufacturing tolerances. Height variations (0.020" to 0.022" seated maximum) are within acceptable assembly tolerances for standard reflow processes.

Q: Which substitute part is best for automotive applications?

A: For automotive applications requiring AEC-Q200 qualification, RMCF0603FT2K21, RMCF0603FG2K21, ERJ-3EKF2211V, CRCW06032K21FKEA, and AC0603FR-072K21L are all qualified options. RMCF0603FT2K21 offers the best combination of AEC-Q200 qualification, ROHS3 compliance, and supply availability.

Q: Can I mix different manufacturers in the same production batch?

A: Yes. All listed substitute parts meet identical electrical and mechanical specifications. Mixing manufacturers within a single production batch does not affect circuit performance, provided assembly and reflow processes remain consistent. However, some quality management systems may require documentation of manufacturer changes.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture bake requirements. All listed parts carry MSL 1 rating, meaning they can be stored indefinitely at room temperature without special moisture control measures, and no pre-reflow baking is required before assembly.

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