RC1608F2433CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F2433CS is a 243 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with 912 units currently in stock. The part is designed for general-purpose applications requiring moisture-resistant thick film construction and operates across the temperature range of -55°C to 155°C.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers offer superior inventory levels, or when application requirements demand specific certifications such as automotive AEC-Q200 qualification that the primary part does not provide.

Key Parameters

Parameter	Value
Resistance	243 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 (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F2433CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 243 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
Termination count: 2
RoHS3 compliance
MSL rating: 1 (Unlimited)

All substitute parts listed meet these mandatory parameters. Substitute parts are grouped into three categories based on product status and availability:

Direct Substitutes (Functionally Identical): CR0603-FX-2433ELF (Bourns Inc.) and RC0603FR-07243KL (YAGEO) provide direct functional equivalence with active product status and high inventory availability.

Upgrade/Discontinued Status: MCR03ERTF2433 (Rohm Semiconductor) maintains full electrical and mechanical equivalence but is discontinued at DiGi Electronics, making it suitable only when existing inventory is accessible.

Enhanced Specification Alternatives: AC0603FR-07243KL, CRCW0603243KFKEA, ERJ-3EKF2433V, RMCF0603FG243K, and RMCF0603FT243K include automotive AEC-Q200 certification in addition to all base parameters, providing enhanced reliability qualification for applications requiring automotive-grade components.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	MSL	RoHS3	AEC-Q200	Product Status	Inventory
RC1608F2433CS	Samsung Electro-Mechanics	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	No	Active	912
CR0603-FX-2433ELF	Bourns Inc.	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	No	Active	15058
RC0603FR-07243KL	YAGEO	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	No	Active	385834
MCR03ERTF2433	Rohm Semiconductor	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	No	Discontinued	707
AC0603FR-07243KL	YAGEO	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	Yes	Active	4848
CRCW0603243KFKEA	Vishay Dale	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	Yes	Active	28805
ERJ-3EKF2433V	Panasonic Electronic Components	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	Yes	Active	56078
RMCF0603FG243K	Stackpole Electronics Inc	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	Yes	Active	15620
RMCF0603FT243K	Stackpole Electronics Inc	243 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1	Yes	Yes	Active	149991

Engineering Selection Recommendations

For Standard Industrial Applications: RC0603FR-07243KL (YAGEO) is the primary recommendation based on superior inventory availability (385,834 units) and active product status. This part provides direct functional equivalence to RC1608F2433CS with identical electrical and mechanical specifications.

For High-Volume Requirements: RMCF0603FT243K (Stackpole Electronics Inc) offers the highest inventory level (149,991 units) among all alternatives and maintains active product status. This part is suitable when volume requirements exceed typical stock levels of other manufacturers.

For Automotive Applications: When AEC-Q200 automotive qualification is required, ERJ-3EKF2433V (Panasonic Electronic Components) provides the largest inventory (56,078 units) with active status. Alternative automotive-qualified options include CRCW0603243KFKEA (Vishay Dale, 28,805 units), RMCF0603FT243K (Stackpole Electronics Inc, 149,991 units), and RMCF0603FG243K (Stackpole Electronics Inc, 15,620 units).

For Secondary Sourcing: CR0603-FX-2433ELF (Bourns Inc.) provides a secondary direct substitute with 15,058 units in stock and active product status, suitable for supply chain diversification.

Avoid for New Designs: MCR03ERTF2433 (Rohm Semiconductor) is discontinued at DiGi Electronics and should be used only when existing inventory from alternative sources is confirmed available.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-07243KL be used as a direct replacement for RC1608F2433CS?

A: Yes. RC0603FR-07243KL meets all mandatory electrical and mechanical parameters: 243 kOhms ±1% resistance, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, MSL 1, and RoHS3 compliance. No circuit modifications are required.

Q: What is the difference between parts with and without AEC-Q200 certification?

A: AEC-Q200 certification indicates the part has undergone automotive-grade reliability testing and qualification. Parts without this certification (RC1608F2433CS, CR0603-FX-2433ELF, RC0603FR-07243KL, MCR03ERTF2433) are suitable for general industrial applications. Parts with AEC-Q200 (AC0603FR-07243KL, CRCW0603243KFKEA, ERJ-3EKF2433V, RMCF0603FG243K, RMCF0603FT243K) are qualified for automotive environments and applications requiring enhanced reliability standards.

Q: Are there any physical dimension differences between substitute parts?

A: Most substitute parts maintain identical dimensions (0.063" L x 0.031" W / 1.60mm x 0.80mm) with maximum seated height of 0.022" (0.55mm). CRCW0603243KFKEA has slightly different dimensions (0.061" L x 0.033" W / 1.55mm x 0.85mm) with maximum seated height of 0.020" (0.50mm). RMCF0603FG243K and RMCF0603FT243K have dimensions of 0.061" L x 0.031" W (1.55mm x 0.80mm). These minor variations are within standard PCB design tolerances for 0603 package footprints.

Q: Which substitute offers the best inventory availability?

A: RMCF0603FT243K (Stackpole Electronics Inc) provides the highest inventory level at 149,991 units. RC0603FR-07243KL (YAGEO) is the second option with 385,834 units. For automotive-qualified alternatives, ERJ-3EKF2433V (Panasonic) offers 56,078 units.

Q: Can I use MCR03ERTF2433 in a new design?

A: MCR03ERTF2433 is discontinued at DiGi Electronics and should not be specified for new designs. Use this part only when existing inventory from alternative distributors is confirmed and documented for supply chain continuity in existing production.

Q: What packaging formats are available for these substitutes?

A: RC1608F2433CS is supplied in Tape & Reel (TR) format. Direct substitutes CR0603-FX-2433ELF, RC0603FR-07243KL, AC0603FR-07243KL, CRCW0603243KFKEA, ERJ-3EKF2433V, and RMCF0603FT243K are available in Tape & Reel (TR). RMCF0603FG243K is available in Cut Tape (CT). MCR03ERTF2433 is available in Cut Tape (CT) & Digi-Reel®. Verify packaging format compatibility with your assembly process requirements.

Q: Do all substitutes maintain the same moisture sensitivity level?

A: Yes. All substitute parts maintain MSL 1 (Unlimited) rating, identical to RC1608F2433CS. This indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the compliance status of RC1608F2433CS. All parts are also REACH Unaffected and classified as EAR99 for export control purposes.

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