RC1608F68R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F68R1CS is a 68.1 Ohm ±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 unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and suitable for general-purpose SMD applications requiring precision resistive elements in compact form factors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required, or when design specifications permit selection from qualified alternative manufacturers meeting identical electrical and mechanical parameters.

Substiute Parts

RC1608F68R1CS

Samsung Electro-MechanicsIn Stock: 804RC1608F68R1CS Datasheet

Current PartRFQ

CR0603-FX-68R1ELF

Bourns Inc.In Stock: 15648CR0603-FX-68R1ELF Datasheet

DirectRFQ

RC0603FR-0768R1L

YAGEOIn Stock: 309090RC0603FR-0768R1L Datasheet

DirectRFQ

MCR03ERTF68R1

Rohm SemiconductorIn Stock: 1111MCR03ERTF68R1 Datasheet

UpgradeRFQ

CRCW060368R1FKEA

Vishay DaleIn Stock: 4007CRCW060368R1FKEA Datasheet

SimilarRFQ

CRCW060368R1FKTA

Vishay DaleIn Stock: 23288CRCW060368R1FKTA Datasheet

SimilarRFQ

ERJ-3EKF68R1V

Panasonic Electronic ComponentsIn Stock: 99129ERJ-3EKF68R1V Datasheet

SimilarRFQ

RMCF0603FT68R1

Stackpole Electronics IncIn Stock: 67571RMCF0603FT68R1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F68R1CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 68.1 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.1W / 1/10W (exact match required)
• Package / Case: 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 new designs)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All substitute parts listed below meet these mandatory parameters. Variations in packaging format (Tape & Reel vs. Cut Tape) and minor dimensional tolerances within the 0603 package specification do not affect functional substitutability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

RC0603FR-0768R1L (YAGEO), CR0603-FX-68R1ELF (Bourns Inc.), ERJ-3EKF68R1V (Panasonic Electronic Components), and RMCF0603FT68R1 (Stackpole Electronics Inc.) are all Active product status components with ROHS3 compliance and identical electrical specifications to the RC1608F68R1CS. These parts are suitable for direct substitution in new designs and existing applications. High inventory availability across these alternatives ensures supply chain continuity.

Secondary Substitutes (Conditional Use):

CRCW060368R1FKEA (Vishay Dale) meets all electrical and mechanical parameters with ROHS3 compliance and Active product status. This part is suitable for applications where automotive-grade AEC-Q200 qualification is beneficial or required.

Not Recommended for New Designs:

MCR03ERTF68R1 (Rohm Semiconductor) carries Discontinued at DiGi Electronics status and should not be selected for new designs. This part remains electrically equivalent but is subject to supply constraints.

CRCW060368R1FKTA (Vishay Dale) is RoHS non-compliant and REACH Affected. This part is not suitable for applications requiring RoHS3 compliance or for new product designs subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1608F68R1CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts except MCR03ERTF68R1 and CRCW060368R1FKTA meet identical electrical parameters (68.1 Ohms ±1%, 0.1W, ±100ppm/°C, -55°C to 155°C operating range) and package specifications (0603 / 1608 Metric). Direct substitution is functionally equivalent at the circuit level.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated pick-and-place assembly equipment. Cut Tape (CT) & Digi-Reel packaging provides the same components in shorter tape lengths or alternative reel formats. Both formats contain identical components; packaging selection depends on assembly process requirements and order quantities.

Q: Why is CRCW060368R1FKTA not recommended despite being electrically identical?

A: CRCW060368R1FKTA is RoHS non-compliant and REACH Affected. New product designs and applications subject to environmental regulations must use ROHS3-compliant alternatives. The RC1608F68R1CS and all recommended substitutes carry ROHS3 Compliant status.

Q: Are the automotive AEC-Q200 qualified parts (ERJ-3EKF68R1V, RMCF0603FT68R1, CRCW060368R1FKEA) suitable for non-automotive applications?

A: Yes. AEC-Q200 qualification represents additional quality and reliability testing beyond standard specifications. These parts are fully suitable for general-purpose, industrial, and consumer applications. AEC-Q200 qualification does not restrict use to automotive applications.

Q: What is Moisture Sensitivity Level (MSL) 1, and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitute parts carry MSL 1 rating, eliminating moisture-related handling constraints.

Q: Can I use MCR03ERTF68R1 as a substitute despite its Discontinued status?

A: MCR03ERTF68R1 is electrically and mechanically equivalent but carries Discontinued at DiGi Electronics status. While existing inventory may be available through alternative distributors, this part should not be selected for new designs due to supply uncertainty and long-term availability risk.

Q: Are there dimensional differences between substitute parts that affect PCB layout?

A: All parts conform to 0603 (1608 Metric) package specification. Minor dimensional variations exist within tolerance (length 0.061" to 0.063", width 0.031" to 0.033", height 0.020" to 0.022"). These variations are within standard PCB footprint tolerances and do not require layout modifications.