RC1608F5110CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F5110CS is a 511 Ohm ±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 moisture resistant construction and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and suitable for general industrial and consumer applications requiring precision resistive elements in compact form factors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design flexibility permits selection from multiple qualified sources meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	511 Ohms	Core electrical specification
Tolerance	±1%	Precision grade requirement
Power Rating	0.1W (1/10W)	Thermal dissipation capacity
Package Type	0603 (1608 Metric)	Physical form factor and PCB compatibility
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Stability over operating range
Operating Temperature Range	-55°C to +155°C	Environmental operating limits
Moisture Resistance	Yes	Environmental protection feature
RoHS Status	ROHS3 Compliant	Regulatory compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F5110CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 511 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Package designation: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C to +155°C (exact match required)
Number of terminations: 2 (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (preferred for regulatory alignment)
Moisture Sensitivity Level: MSL 1 (Unlimited) (preferred for handling compatibility)

Optional Enhancement Parameters:

Automotive AEC-Q200 qualification (available in certain substitute options; not required for general industrial use)

All substitute parts listed below meet the mandatory matching parameters. Variations in optional enhancement parameters are noted in the comparison table.

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	Composition	RoHS	MSL	AEC-Q200	Inventory Status
Samsung Electro-Mechanics	RC1608F5110CS	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	No	680 Pcs
Bourns Inc.	CR0603-FX-5110ELF	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	No	275053 Pcs
YAGEO	RC0603FR-07511RL	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	No	29883 Pcs
YAGEO	AC0603FR-07511RL	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Yes	1943 Pcs
Vishay Dale	CRCW0603511RFKEA	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Yes	89404 Pcs
Vishay Dale	CRCW0603511RFKTA	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	RoHS Non-Compliant	1	Yes	5400 Pcs
Panasonic Electronic Components	ERJ-3EKF5110V	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Yes	105732 Pcs
Stackpole Electronics Inc	RMCF0603FT511R	511Ω	±1%	0.1W	0603	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Yes	403173 Pcs

Engineering Selection Recommendations

Direct Equivalents (Preferred for General Industrial Applications):

CR0603-FX-5110ELF (Bourns Inc.) and RC0603FR-07511RL (YAGEO) are direct functional equivalents to the RC1608F5110CS. Both parts maintain identical electrical specifications, ROHS3 compliance, and MSL 1 rating. These options are suitable for applications where automotive qualification is not required. Bourns CR0603-FX-5110ELF offers the highest inventory availability at 275,053 pieces.

Automotive-Qualified Alternatives (For AEC-Q200 Applications):

AC0603FR-07511RL (YAGEO), CRCW0603511RFKEA (Vishay Dale), ERJ-3EKF5110V (Panasonic), and RMCF0603FT511R (Stackpole) all provide AEC-Q200 automotive qualification in addition to meeting all core electrical and mechanical specifications. These parts are suitable for automotive and mission-critical applications requiring enhanced reliability documentation. RMCF0603FT511R (Stackpole) provides the highest inventory level among automotive-qualified options at 403,173 pieces.

Compliance Consideration:

CRCW0603511RFKTA (Vishay Dale) meets all electrical and mechanical specifications but carries RoHS non-compliance status and REACH Affected designation. This part is not recommended for new designs targeting ROHS3-compliant end products.

Selection Logic:

For general industrial use with standard compliance requirements: Select CR0603-FX-5110ELF or RC0603FR-07511RL
For automotive or high-reliability applications: Select RMCF0603FT511R, ERJ-3EKF5110V, or CRCW0603511RFKEA
Avoid CRCW0603511RFKTA in new designs due to RoHS non-compliance

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC1608F5110CS with any of the listed parts without design changes?

A: Yes, all listed substitute parts except CRCW0603511RFKTA are direct functional equivalents. They share identical resistance value (511Ω), tolerance (±1%), power rating (0.1W), package type (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to +155°C). Physical dimensions and PCB footprints are compatible. CRCW0603511RFKTA is electrically equivalent but carries RoHS non-compliance status and should not be used in new designs.

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

A: AEC-Q200 is an automotive industry qualification standard that certifies enhanced reliability, stricter manufacturing controls, and comprehensive failure rate documentation. Parts with AEC-Q200 qualification (AC0603FR-07511RL, CRCW0603511RFKEA, ERJ-3EKF5110V, RMCF0603FT511R) are suitable for automotive and mission-critical applications. Parts without AEC-Q200 (RC1608F5110CS, CR0603-FX-5110ELF, RC0603FR-07511RL) are suitable for general industrial and consumer applications. Both groups meet identical electrical specifications.

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

A: All parts conform to the 0603 (1608 Metric) package standard. Minor variations exist within tolerance: length ranges from 0.061" to 0.063" (1.55mm to 1.60mm), width ranges from 0.031" to 0.033" (0.80mm to 0.85mm), and height ranges from 0.020" to 0.022" (0.50mm to 0.55mm). These variations are within standard PCB design tolerances and do not affect interchangeability.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 (Moisture Sensitivity Level 1) with Unlimited designation indicates the component has no moisture sensitivity restrictions. These parts do not require special dry-pack storage, desiccant handling, or bake-out procedures before soldering. Standard warehouse storage conditions are acceptable.

Q: Which substitute part offers the best inventory availability?

A: RMCF0603FT511R (Stackpole Electronics Inc) provides the highest inventory level at 403,173 pieces, followed by CR0603-FX-5110ELF (Bourns Inc.) at 275,053 pieces. Both parts are ROHS3 compliant and suitable for immediate procurement.

Q: Can I use CRCW0603511RFKTA as a substitute?

A: CRCW0603511RFKTA meets all electrical and mechanical specifications but is RoHS non-compliant and REACH Affected. It is not recommended for new product designs targeting ROHS3 compliance or for applications subject to RoHS regulations. Existing designs using this part may continue operation, but new designs should select ROHS3-compliant alternatives.

Q: Are all substitute parts available in Tape & Reel (TR) packaging?

A: All listed substitute parts are available in Tape & Reel (TR) packaging suitable for automated assembly. CRCW0603511RFKEA is also available in Cut Tape (CT) & Digi-Reel® packaging as an alternative option.

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