RC1608F1401CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1401CS is a 1.4 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 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements mandate alternative manufacturer qualifications such as automotive AEC-Q200 certification.

Key Parameters

Parameter	Value
Resistance	1.4 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 Resistance	Yes
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1401CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 1.4 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 to 155°C
RoHS compliance: ROHS3
MSL rating: 1 (Unlimited)

All substitute parts listed meet these mandatory parameters. Substitute parts are further categorized as follows:

Direct Substitutes (Functionally Identical):

CR0603-FX-1401ELF (Bourns Inc.)
RC0603FR-071K4L (YAGEO)

Similar Substitutes (Additional Qualifications):

AC0603FR-071K4L (YAGEO) – Includes AEC-Q200 automotive qualification
CRCW06031K40FKEA (Vishay Dale) – Includes AEC-Q200 automotive qualification
ERJ-3EKF1401V (Panasonic Electronic Components) – Includes AEC-Q200 automotive qualification
RMCF0603FT1K40 (Stackpole Electronics Inc) – Includes AEC-Q200 automotive qualification

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Composition	AEC-Q200	RoHS3	MSL	Inventory (Pcs)
Samsung Electro-Mechanics	RC1608F1401CS	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	No	Yes	1	759
Bourns Inc.	CR0603-FX-1401ELF	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	No	Yes	1	59540
YAGEO	RC0603FR-071K4L	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	No	Yes	1	89853
YAGEO	AC0603FR-071K4L	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	Yes	Yes	1	18760
Vishay Dale	CRCW06031K40FKEA	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	Yes	Yes	1	35190
Panasonic Electronic Components	ERJ-3EKF1401V	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	Yes	Yes	1	13434
Stackpole Electronics Inc	RMCF0603FT1K40	1.4 kΩ	±1%	0.1	0603	±100ppm/°C	-55~155°C	Thick Film	Yes	Yes	1	26369

Engineering Selection Recommendations

For Standard Industrial Applications: Select CR0603-FX-1401ELF (Bourns Inc.) or RC0603FR-071K4L (YAGEO) as primary alternatives. Both parts maintain identical electrical and mechanical specifications to the RC1608F1401CS while offering superior inventory availability (59,540 and 89,853 units respectively). Both are ROHS3 compliant with MSL 1 rating and Active product status.

For Automotive Applications Requiring AEC-Q200 Qualification: Select from AC0603FR-071K4L (YAGEO), CRCW06031K40FKEA (Vishay Dale), ERJ-3EKF1401V (Panasonic Electronic Components), or RMCF0603FT1K40 (Stackpole Electronics Inc). All four parts meet AEC-Q200 automotive qualification standards while maintaining identical core electrical parameters. CRCW06031K40FKEA offers the highest inventory level (35,190 units) among automotive-qualified options.

For Supply Chain Optimization: RC0603FR-071K4L (YAGEO) provides the largest available inventory (89,853 units) and represents the most accessible substitute for immediate procurement needs.

All listed substitutes maintain ROHS3 compliance, MSL 1 rating, and Active product status, ensuring regulatory and environmental compliance across all selection options.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-1401ELF be used as a direct replacement for RC1608F1401CS?

A: Yes. CR0603-FX-1401ELF meets all mandatory electrical and mechanical parameters: 1.4 kOhms ±1%, 0.1W power rating, 0603 package, thick film composition, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, ROHS3 compliance, and MSL 1 rating. No design modifications are required.

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes (CR0603-FX-1401ELF and RC0603FR-071K4L) match all specifications of the RC1608F1401CS without additional qualifications. Similar substitutes (AC0603FR-071K4L, CRCW06031K40FKEA, ERJ-3EKF1401V, RMCF0603FT1K40) include AEC-Q200 automotive qualification in addition to matching all core parameters. The additional qualification does not affect standard industrial applications.

Q: Are there physical dimension differences between substitute parts?

A: Minor dimensional variations exist. The RC1608F1401CS specifies 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. CRCW06031K40FKEA specifies 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" (0.50mm) maximum seated height. RMCF0603FT1K40 specifies 0.061" L x 0.031" W (1.55mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. These variations remain within 0603 package tolerance and do not affect PCB layout compatibility.

Q: Which substitute offers the best inventory availability?

A: RC0603FR-071K4L (YAGEO) provides 89,853 units in stock, representing the highest available inventory among all listed substitutes.

Q: Can automotive-qualified parts be used in non-automotive applications?

A: Yes. AEC-Q200 qualified parts (AC0603FR-071K4L, CRCW06031K40FKEA, ERJ-3EKF1401V, RMCF0603FT1K40) meet or exceed all specifications required for standard industrial applications. The automotive qualification represents an additional certification level and does not restrict use in non-automotive designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the RC1608F1401CS.

Q: What is the temperature coefficient significance for substitution?

A: All substitute parts maintain ±100ppm/°C temperature coefficient, identical to the RC1608F1401CS. This parameter determines resistance stability across the -55°C to 155°C operating range and is a mandatory matching criterion for functional equivalence.

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