RC1608F2101CS Equivalent & Substitute Parts

Part Overview

The RC1608F2101CS is a 2.1 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation and features moisture-resistant construction with unlimited moisture sensitivity level (MSL 1). The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Resistance	2.1 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

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F2101CS is determined by strict alignment of the following parameters:

Primary Substitution Criteria:

Resistance value: 2.1 kOhms
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
Moisture sensitivity level: 1 (Unlimited)

Secondary Compliance Criteria:

RoHS3 compliance status
REACH regulatory status
Termination count: 2

Substitute parts are classified into two categories: Direct Substitutes (identical specifications and packaging format) and Similar Substitutes (identical electrical and thermal specifications with automotive AEC-Q200 qualification or alternative packaging configurations). All listed substitutes maintain mechanical compatibility within the 0603 footprint and satisfy the electrical performance requirements of the original part.

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	MSL	RoHS Status	Features	Packaging Type
Samsung Electro-Mechanics	RC1608F2101CS	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Moisture Resistant	Cut Tape (CT)
Bourns Inc.	CR0603-FX-2101ELF	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Moisture Resistant	Tape & Reel (TR)
YAGEO	RC0603FR-072K1L	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Moisture Resistant	Cut Tape (CT) & Digi-Reel®
YAGEO	AC0603FR-072K1L	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Automotive AEC-Q200, Moisture Resistant	Tape & Reel (TR)
Vishay Dale	CRCW06032K10FKEA	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Automotive AEC-Q200	Tape & Reel (TR)
Vishay Dale	CRCW06032K10FKTA	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	RoHS non-compliant	Automotive AEC-Q200	Tape & Reel (TR)
Panasonic Electronic Components	ERJ-3EKF2101V	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Automotive AEC-Q200	Tape & Reel (TR)
Stackpole Electronics Inc	RMCF0603FT2K10	2.1 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	1	ROHS3 Compliant	Automotive AEC-Q200	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications and Compliance):

CR0603-FX-2101ELF (Bourns Inc.) and RC0603FR-072K1L (YAGEO) are direct functional equivalents to the RC1608F2101CS. Both parts maintain identical electrical parameters, thermal characteristics, moisture sensitivity level, and RoHS3 compliance status. These substitutes are suitable for applications requiring standard industrial-grade resistors without automotive qualification requirements.

Similar Substitutes with Automotive Qualification (AEC-Q200):

AC0603FR-072K1L (YAGEO), CRCW06032K10FKEA (Vishay Dale), ERJ-3EKF2101V (Panasonic Electronic Components), and RMCF0603FT2K10 (Stackpole Electronics Inc) provide equivalent electrical and thermal performance with additional automotive AEC-Q200 qualification. These parts are suitable for applications requiring enhanced reliability standards and automotive-grade component certification. All four maintain RoHS3 compliance and unlimited moisture sensitivity level.

Non-Compliant Alternative:

CRCW06032K10FKTA (Vishay Dale) carries RoHS non-compliant and REACH Affected status. This part is electrically and thermally equivalent but does not meet current regulatory compliance requirements and should be selected only when legacy design constraints mandate its use.

Packaging Considerations:

The original RC1608F2101CS is supplied in Cut Tape (CT) format. Substitute parts are available in Tape & Reel (TR) packaging, which is standard for high-volume manufacturing. Cut Tape alternatives (RC0603FR-072K1L with Digi-Reel option) are available for lower-volume applications.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-2101ELF replace RC1608F2101CS in any application?

A: Yes. CR0603-FX-2101ELF is a direct substitute with identical resistance, tolerance, power rating, package dimensions, temperature coefficient, operating temperature range, and RoHS3 compliance. The only difference is the manufacturer (Bourns vs. Samsung) and packaging format (Tape & Reel vs. Cut Tape), which does not affect circuit performance.

Q: What is the difference between the standard substitutes and the AEC-Q200 qualified parts?

A: AEC-Q200 qualified parts (AC0603FR-072K1L, CRCW06032K10FKEA, ERJ-3EKF2101V, RMCF0603FT2K10) undergo additional automotive reliability testing and qualification. These parts are suitable for automotive and high-reliability applications. Standard substitutes (CR0603-FX-2101ELF, RC0603FR-072K1L) are suitable for general industrial applications without automotive requirements.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 0603 package specification. The RC1608F2101CS, CR0603-FX-2101ELF, RC0603FR-072K1L, AC0603FR-072K1L, ERJ-3EKF2101V, and RMCF0603FT2K10 share identical length (0.063" / 1.60mm) and width (0.031" / 0.80mm). CRCW06032K10FKEA and CRCW06032K10FKTA have slightly different dimensions (0.061" L x 0.033" W and 0.063" L x 0.033" W respectively) and reduced maximum seated height (0.020" vs. 0.022"). These variations remain within 0603 footprint tolerance and do not affect PCB layout compatibility.

Q: Why should CRCW06032K10FKTA be avoided?

A: CRCW06032K10FKTA is RoHS non-compliant and REACH Affected, indicating it does not meet current environmental and regulatory standards. This part should only be selected when legacy design constraints or specific supply chain requirements mandate its use. For new designs, CRCW06032K10FKEA (RoHS3 compliant version) is the preferred Vishay Dale alternative.

Q: Can I use Tape & Reel packaged substitutes in place of Cut Tape?

A: Yes. Tape & Reel packaging is standard for automated assembly and high-volume production. Cut Tape packaging is typically used for lower-volume or manual assembly applications. The component itself is identical; only the delivery format differs. Verify that your assembly process can accommodate the packaging format of the selected substitute.

Q: Which substitute offers the highest inventory availability?

A: RMCF0603FT2K10 (Stackpole Electronics Inc) has the highest inventory level at 1,005,141 pieces. ERJ-3EKF2101V (Panasonic) follows with 89,025 pieces. CR0603-FX-2101ELF (Bourns) has 28,376 pieces. These inventory levels support high-volume production requirements.

Q: Are all substitutes moisture resistant?

A: Yes. All listed substitutes maintain MSL 1 (Unlimited) moisture sensitivity level, indicating moisture-resistant construction equivalent to the original RC1608F2101CS. No additional moisture protection measures are required during storage or handling.

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