Equivalent & Substitute Parts for RC1608F2431CS

Part Overview

The RC1608F2431CS is a 2.43 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status with 837 pieces currently in stock. The part is designed for general-purpose applications requiring moisture-resistant thick film construction with standard industrial temperature range operation from -55°C to 155°C.

Identifying equivalent and substitute parts is necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility permits selection from multiple qualified manufacturers. Substitute parts must maintain identical electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, height) to ensure direct board-level interchangeability without circuit redesign.

Key Parameters

Parameter	Value	Unit	Substitution Criticality
Resistance	2.43	kOhms	Critical
Tolerance	±1%	%	Critical
Power Rating	0.1	W (1/10W)	Critical
Package / Case	0603 (1608 Metric)	—	Critical
Composition	Thick Film	—	Critical
Temperature Coefficient	±100	ppm/°C	Important
Operating Temperature Range	-55 to 155	°C	Important
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—	Important
RoHS Status	ROHS3 Compliant	—	Important
Number of Terminations	2	—	Critical

Substitute Part Grouping Explanation

Substitute parts for the RC1608F2431CS are classified into two categories based on functional equivalence and application scope:

Direct Equivalents (Functionally Identical): Parts that match all critical electrical and mechanical parameters without additional certifications or feature enhancements. These parts are suitable for direct replacement in standard industrial applications.

Similar Parts with Enhanced Features (Functionally Compatible with Additional Qualifications): Parts that maintain all critical electrical and mechanical parameters but include automotive AEC-Q200 qualification or alternative packaging formats. These parts are suitable for replacement in applications where the additional qualification is either required or beneficial, or where packaging format permits substitution.

Substitution Logic: All listed substitute parts maintain the following critical parameters identical to the RC1608F2431CS:

Resistance: 2.43 kOhms
Tolerance: ±1%
Power Rating: 0.1W (1/10W)
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature: -55°C to 155°C
Moisture Sensitivity Level: 1 (Unlimited)
Number of Terminations: 2

Dimensional variations within the 0603 package specification (length 0.061" to 0.063", width 0.031" to 0.033", height 0.020" to 0.022") are acceptable for PCB footprint compatibility. RoHS compliance status and automotive certifications represent secondary differentiators that do not affect core electrical or mechanical interchangeability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (kOhms)	Tolerance (%)	Power (W)	Package	Temp Coeff (ppm/°C)	Op Temp (°C)	MSL	RoHS Status	Features	Product Status
RC1608F2431CS	Samsung Electro-Mechanics	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Moisture Resistant	Active
CR0603-FX-2431ELF	Bourns Inc.	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Moisture Resistant	Active
RC0603FR-072K43L	YAGEO	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Moisture Resistant	Active
AC0603FR-072K43L	YAGEO	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Automotive AEC-Q200, Moisture Resistant	Active
CRCW06032K43FKEA	Vishay Dale	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Automotive AEC-Q200	Active
CRCW06032K43FKEB	Vishay Dale	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Automotive AEC-Q200	Discontinued at DiGi Electronics
CRCW06032K43FKTA	Vishay Dale	2.43	±1	0.1	0603	±100	-55 to 155	1	RoHS non-compliant	Automotive AEC-Q200	Active
ERJ-3EKF2431V	Panasonic Electronic Components	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Automotive AEC-Q200	Active
RMCF0603FT2K43	Stackpole Electronics Inc	2.43	±1	0.1	0603	±100	-55 to 155	1	ROHS3 Compliant	Automotive AEC-Q200	Active

Engineering Selection Recommendations

For Standard Industrial Applications (Non-Automotive):

Select CR0603-FX-2431ELF (Bourns Inc.) or RC0603FR-072K43L (YAGEO) as primary alternatives to RC1608F2431CS. Both parts maintain identical electrical specifications, RoHS3 compliance, and moisture-resistant thick film construction. CR0603-FX-2431ELF offers higher inventory availability (39,937 pieces) compared to RC0603FR-072K43L (5,100 pieces), making it the preferred choice for supply chain continuity. Both parts are Active status with unlimited moisture sensitivity level (MSL 1).

For Automotive Applications (AEC-Q200 Required):

Select ERJ-3EKF2431V (Panasonic Electronic Components) or RMCF0603FT2K43 (Stackpole Electronics Inc) as primary alternatives. Both parts carry automotive AEC-Q200 qualification, maintain identical electrical specifications, and are RoHS3 compliant. RMCF0603FT2K43 provides superior inventory availability (179,958 pieces) and is the recommended choice for high-volume automotive applications. ERJ-3EKF2431V (74,951 pieces) serves as a secondary option with equivalent qualification status.

For Automotive Applications with Flexible Packaging:

CRCW06032K43FKEA (Vishay Dale) is an alternative automotive-qualified option (AEC-Q200) with RoHS3 compliance and 49,170 pieces in stock. This part is suitable for applications where Tape & Reel packaging is required.

Parts to Avoid:

CRCW06032K43FKEB (Vishay Dale) is discontinued at DiGi Electronics and should not be selected for new designs despite active inventory status.

CRCW06032K43FKTA (Vishay Dale) is RoHS non-compliant and REACH-affected, making it unsuitable for applications requiring RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q1: Can I substitute RC1608F2431CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical resistance (2.43 kOhms), tolerance (±1%), power rating (0.1W), package (0603), and temperature coefficient (±100ppm/°C). Direct board-level substitution is possible without circuit modification. Dimensional variations within the 0603 specification are accommodated by standard PCB footprints.

Q2: What is the difference between direct equivalents and automotive-qualified parts?

A: Direct equivalents (CR0603-FX-2431ELF, RC0603FR-072K43L) are functionally identical to the RC1608F2431CS without additional certifications. Automotive-qualified parts (ERJ-3EKF2431V, RMCF0603FT2K43, AC0603FR-072K43L, CRCW06032K43FKEA) carry AEC-Q200 qualification, which certifies reliability for automotive temperature cycling and environmental stress conditions. Automotive-qualified parts are required for automotive applications but are also suitable for standard industrial use.

Q3: Why do some substitute parts have different physical dimensions within the 0603 package?

A: The 0603 (1608 Metric) package specification allows dimensional tolerances. Length ranges from 0.061" to 0.063", width from 0.031" to 0.033", and height from 0.020" to 0.022". These variations are within manufacturing tolerances and do not affect PCB footprint compatibility or electrical performance. Standard 0603 PCB footprints accommodate all listed parts.

Q4: Which substitute part offers the best supply chain availability?

A: RMCF0603FT2K43 (Stackpole Electronics Inc) provides the highest inventory availability at 179,958 pieces. This part is automotive AEC-Q200 qualified, RoHS3 compliant, and Active status, making it the optimal choice for applications requiring both supply security and automotive qualification.

Q5: Are all substitute parts RoHS3 compliant?

A: No. CRCW06032K43FKTA (Vishay Dale) is RoHS non-compliant and REACH-affected. All other listed parts are RoHS3 compliant. For applications requiring RoHS3 compliance, exclude CRCW06032K43FKTA from selection.

Q6: Can I use CRCW06032K43FKEB as a substitute?

A: CRCW06032K43FKEB is discontinued at DiGi Electronics and should not be selected for new designs. Although inventory exists (10,888 pieces), discontinued status indicates limited future availability and potential supply chain risk. Select active-status alternatives instead.

Q7: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture-controlled storage or handling. All listed parts carry MSL 1 rating, eliminating moisture sensitivity as a substitution constraint.

Q8: Are there packaging format differences among substitute parts?

A: Yes. Most parts are supplied in Tape & Reel (TR) format. CRCW06032K43FKTA is supplied in Cut Tape (CT) & Digi-Reel® format. Packaging format selection depends on assembly process requirements. Tape & Reel format is standard for automated pick-and-place assembly.

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