RC1608F514CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F514CS is a 510 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 moisture-resistant construction and operates across the temperature range of -55°C to 155°C. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and compliance certifications to ensure direct functional interchangeability in circuit applications.

Key Parameters

Parameter	Specification
Resistance Value	510 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 RC1608F514CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (510 kOhms), tolerance (±1%), power rating (0.1W), and temperature coefficient (±100ppm/°C) must match exactly.

Mechanical Parameters: Package designation (0603 / 1608 Metric), physical dimensions (0.063" L x 0.031" W / 1.60mm x 0.80mm), and seated height (0.022" / 0.55mm maximum) must be identical or within supplier device package specifications.

Compliance Parameters: All substitute parts must maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status.

Composition: Thick film construction is required for all substitutes.

Substitute parts are categorized as follows:

Direct Substitutes: Parts meeting all electrical, mechanical, and compliance parameters without additional features.

Upgrade Substitutes: Parts meeting all base parameters with additional certifications (AEC-Q200 automotive qualification, high voltage capability) that provide enhanced reliability for demanding applications.

Similar Substitutes: Parts meeting all electrical and compliance parameters with minor dimensional variations within acceptable tolerances or additional automotive certifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Packaging Type	RoHS	MSL
RC1608F514CS	Samsung Electro-Mechanics	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	Tape & Reel	ROHS3	1
CR0603-FX-5103ELF	Bourns Inc.	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	Tape & Reel	ROHS3	1
RC0603FR-07510KL	YAGEO	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Moisture Resistant	Cut Tape & Digi-Reel	ROHS3	1
KTR03EZPF5103	Rohm Semiconductor	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, High Voltage	Tape & Reel	ROHS3	1
AC0603FR-07510KL	YAGEO	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	Cut Tape & Digi-Reel	ROHS3	1
CRCW0603510KFKEA	Vishay Dale	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Cut Tape & Digi-Reel	ROHS3	1
ERJ-3EKF5103V	Panasonic Electronic Components	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Cut Tape & Digi-Reel	ROHS3	1
RMCF0603FT510K	Stackpole Electronics Inc	510 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Tape & Reel	ROHS3	1

Engineering Selection Recommendations

Direct Substitution (No Application Restrictions):

CR0603-FX-5103ELF (Bourns Inc.) and RC0603FR-07510KL (YAGEO) are direct functional equivalents to the RC1608F514CS. Both parts maintain identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these options is based on packaging preference (Tape & Reel versus Cut Tape & Digi-Reel) and supplier availability.

Upgrade Substitution (Enhanced Reliability Applications):

KTR03EZPF5103 (Rohm Semiconductor), AC0603FR-07510KL (YAGEO), CRCW0603510KFKEA (Vishay Dale), ERJ-3EKF5103V (Panasonic Electronic Components), and RMCF0603FT510K (Stackpole Electronics Inc) are qualified substitutes with AEC-Q200 automotive certification. These parts meet all base electrical and mechanical requirements of the RC1608F514CS while providing additional qualification for automotive-grade applications. KTR03EZPF5103 includes high voltage capability designation. Selection among these upgrade options depends on packaging format preference and supply chain requirements.

Compliance Verification:

All listed substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status, ensuring regulatory alignment with the original RC1608F514CS specification.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-5103ELF replace RC1608F514CS in any application?

A: Yes. CR0603-FX-5103ELF meets all electrical parameters (510 kΩ ±1%, 0.1W, ±100ppm/°C), mechanical specifications (0603 package, identical dimensions), and compliance requirements (ROHS3, MSL 1) of the RC1608F514CS. Direct substitution is functionally equivalent.

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

A: Direct substitutes (CR0603-FX-5103ELF, RC0603FR-07510KL) match all base specifications without additional certifications. Upgrade substitutes (KTR03EZPF5103, AC0603FR-07510KL, CRCW0603510KFKEA, ERJ-3EKF5103V, RMCF0603FT510K) include AEC-Q200 automotive qualification, providing enhanced reliability for demanding environments while maintaining identical core electrical and mechanical performance.

Q: Are there dimensional differences between substitute parts?

A: Substitute parts maintain the 0603 (1608 Metric) package designation. Minor dimensional variations exist within supplier specifications: CRCW0603510KFKEA has dimensions of 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" seated height, while most other substitutes match the original 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" seated height. These variations remain within standard 0603 package tolerances and do not affect PCB layout compatibility.

Q: Which substitute offers the highest inventory availability?

A: RMCF0603FT510K (Stackpole Electronics Inc) has the highest reported inventory at 262,937 pieces. ERJ-3EKF5103V (Panasonic Electronic Components) follows with 144,676 pieces. CRCW0603510KFKEA (Vishay Dale) has 79,980 pieces available.

Q: Can I use an AEC-Q200 qualified part in a non-automotive application?

A: Yes. AEC-Q200 qualification represents an enhanced reliability standard that exceeds standard commercial specifications. Parts qualified to AEC-Q200 (KTR03EZPF5103, AC0603FR-07510KL, CRCW0603510KFKEA, ERJ-3EKF5103V, RMCF0603FT510K) are fully compatible with non-automotive applications and provide superior performance margins.

Q: What packaging formats are available for substitutes?

A: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel. RC1608F514CS, CR0603-FX-5103ELF, KTR03EZPF5103, and RMCF0603FT510K are supplied in Tape & Reel format. RC0603FR-07510KL, AC0603FR-07510KL, CRCW0603510KFKEA, and ERJ-3EKF5103V are supplied in Cut Tape & Digi-Reel format. Selection depends on assembly equipment compatibility and production volume requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the RC1608F514CS.

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