RC1608F3403CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F3403CS is a 340 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 full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The RC1608F3403CS serves as a standard general-purpose resistor for industrial and consumer electronics applications requiring moisture-resistant thick film construction.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit selection from multiple qualified manufacturers. All substitute parts listed maintain identical electrical specifications and mechanical compatibility within the defined tolerance parameters.

Substiute Parts

RC1608F3403CS

Samsung Electro-MechanicsIn Stock: 1081RC1608F3403CS Datasheet

Current PartRFQ

CR0603-FX-3403ELF

Bourns Inc.In Stock: 20612CR0603-FX-3403ELF Datasheet

DirectRFQ

RC0603FR-07340KL

YAGEOIn Stock: 4430RC0603FR-07340KL Datasheet

DirectRFQ

AC0603FR-07340KL

YAGEOIn Stock: 29275AC0603FR-07340KL Datasheet

SimilarRFQ

CRCW0603340KFKEA

Vishay DaleIn Stock: 21692CRCW0603340KFKEA Datasheet

SimilarRFQ

ERJ-3EKF3403V

Panasonic Electronic ComponentsIn Stock: 31436ERJ-3EKF3403V Datasheet

SimilarRFQ

RMCF0603FT340K

Stackpole Electronics IncIn Stock: 46813RMCF0603FT340K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitute relationships for the RC1608F3403CS:

Primary Substitution Criteria:

• Resistance value: 340 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.1W / 1/10W (exact match required)
• Package: 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)
• RoHS3 compliance: Required for all substitutes

Secondary Compatibility Parameters:

• Moisture resistance: Required feature
• MSL rating: 1 (Unlimited) or equivalent
• Number of terminations: 2 (standard for chip resistors)
• REACH compliance: REACH Unaffected status maintained

Substitute parts are classified into two categories:

Direct Substitutes maintain identical specifications and packaging format with no additional features or certifications beyond the base requirements.

Similar Substitutes meet all electrical and mechanical requirements but include additional automotive-grade certifications (AEC-Q200) or alternative packaging options. These parts are electrically and mechanically interchangeable with the main part while offering enhanced qualification for specific application domains.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (No Application Restrictions):

The CR0603-FX-3403ELF (Bourns Inc.) and RC0603FR-07340KL (YAGEO) are direct functional equivalents to the RC1608F3403CS. Both parts maintain identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these direct substitutes is based on availability, lead time, and supply chain logistics without technical qualification requirements.

Automotive-Grade Substitution (Application-Dependent):

The AC0603FR-07340KL (YAGEO), CRCW0603340KFKEA (Vishay Dale), ERJ-3EKF3403V (Panasonic Electronic Components), and RMCF0603FT340K (Stackpole Electronics Inc) are qualified to AEC-Q200 automotive standards. These parts are electrically and mechanically equivalent to the main part and are suitable for use in automotive applications or designs requiring automotive-grade component qualification. In non-automotive applications, these parts function identically to the base specification and may be selected based on inventory availability and cost considerations.

Compliance Verification:

All listed substitute parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL 1 (Unlimited) moisture sensitivity ratings. No additional handling, storage, or environmental precautions are required when substituting between any of the listed parts.

Physical Compatibility:

Minor dimensional variations exist within the 0603 package specification. The CRCW0603340KFKEA exhibits slightly reduced length (0.061" vs. 0.063") and height (0.020" vs. 0.022") compared to the main part. These variations remain within standard 0603 package tolerances and do not affect PCB footprint compatibility or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC1608F3403CS with any of the listed parts without design review?

A: Yes, for non-automotive applications. All listed parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, and operating temperature specifications. Direct substitutes (CR0603-FX-3403ELF and RC0603FR-07340KL) require no additional qualification. Automotive-grade parts (AC0603FR-07340KL, CRCW0603340KFKEA, ERJ-3EKF3403V, RMCF0603FT340K) are suitable for any application and may be selected based on availability.

Q: What is the difference between direct substitutes and automotive-grade substitutes?

A: Direct substitutes meet the base electrical and mechanical specifications without additional certifications. Automotive-grade substitutes meet the same base specifications plus AEC-Q200 automotive qualification. Electrically and mechanically, they are identical. The automotive certification indicates additional testing and qualification for automotive environments but does not restrict use in non-automotive applications.

Q: Are there any packaging format differences I should consider?

A: The RC0603FR-07340KL is supplied in Cut Tape & Digi-Reel format, while all other parts use standard Tape & Reel packaging. Both formats are compatible with standard pick-and-place assembly equipment. Verify your assembly process compatibility with the selected packaging format.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All parts listed, including the main part RC1608F3403CS, are classified as MSL 1 (Unlimited). This means no special moisture control or baking procedures are required before assembly. All parts can be stored and handled under standard warehouse conditions.

Q: Can I mix different manufacturers' parts in the same production run?

A: Yes. All listed parts meet identical electrical specifications (340 kΩ ±1%, 0.1W, ±100ppm/°C, -55°C to +155°C) and mechanical requirements (0603 package, 2 terminations). Mixing manufacturers in the same design is permissible from an electrical and mechanical standpoint. Verify your quality assurance and traceability procedures accommodate multiple manufacturer sources if required by your organization.

Q: What should I verify before substituting parts in an existing design?

A: Confirm that your PCB footprint is standard 0603 (1608 Metric). Verify that your assembly process is compatible with the selected packaging format (Tape & Reel or Cut Tape). Confirm that your application does not have specific manufacturer or series requirements documented in design specifications. All electrical and thermal parameters are identical across all listed parts.

Q: Are there any temperature or environmental performance differences between the main part and substitutes?

A: No. All parts operate identically across the -55°C to +155°C temperature range with ±100ppm/°C temperature coefficient. All parts feature moisture-resistant thick film construction. All parts maintain ROHS3 compliance and REACH Unaffected status. Environmental performance is equivalent across all listed parts.