RC1608F4122CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F4122CS is a 41.2 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 unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and REACH unaffected, suitable for general industrial and consumer applications requiring precision resistive elements in compact surface-mount form factors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing improves supply chain resilience, or when design requirements permit selection from qualified alternative manufacturers offering identical or enhanced electrical and mechanical specifications.

Substiute Parts

RC1608F4122CS

Samsung Electro-MechanicsIn Stock: 827RC1608F4122CS Datasheet

Current PartRFQ

CR0603-FX-4122ELF

Bourns Inc.In Stock: 107439CR0603-FX-4122ELF Datasheet

DirectRFQ

RC0603FR-0741K2L

YAGEOIn Stock: 5321RC0603FR-0741K2L Datasheet

DirectRFQ

MCR03ERTF4122

Rohm SemiconductorIn Stock: 917MCR03ERTF4122 Datasheet

UpgradeRFQ

AC0603FR-0741K2L

YAGEOIn Stock: 18994AC0603FR-0741K2L Datasheet

SimilarRFQ

CRCW060341K2FKEA

Vishay DaleIn Stock: 30495CRCW060341K2FKEA Datasheet

SimilarRFQ

ERJ-3EKF4122V

Panasonic Electronic ComponentsIn Stock: 888519ERJ-3EKF4122V Datasheet

SimilarRFQ

RMCF0603FT41K2

Stackpole Electronics IncIn Stock: 53786RMCF0603FT41K2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F4122CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 41.2 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
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant

All substitute parts listed maintain identical electrical specifications and mechanical dimensions within the 0603 package standard. Substitutes are categorized as Direct (pin-compatible, functionally identical), Upgrade (enhanced features such as automotive qualification), or Similar (equivalent performance with optional certifications).

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Functionally Equivalent):

CR0603-FX-4122ELF (Bourns Inc.) and RC0603FR-0741K2L (YAGEO) are direct substitutes with identical electrical and mechanical specifications to the RC1608F4122CS. Both maintain Active product status and ROHS3 compliance. Selection between these options is based on availability, packaging format preference (Tape & Reel versus Cut Tape & Digi-Reel), and supply chain considerations.

Upgrade Substitutes (Enhanced Certifications):

AC0603FR-0741K2L (YAGEO), CRCW060341K2FKEA (Vishay Dale), ERJ-3EKF4122V (Panasonic Electronic Components), and RMCF0603FT41K2 (Stackpole Electronics Inc) are qualified to automotive AEC-Q200 standard while maintaining all base electrical specifications. These parts are suitable for applications requiring automotive-grade reliability and are interchangeable with the RC1608F4122CS in non-automotive applications. All remain Active status with ROHS3 compliance.

Discontinued Part:

MCR03ERTF4122 (Rohm Semiconductor) is listed as Discontinued at DiGi Electronics. While electrically and mechanically equivalent, this part should not be selected for new designs or long-term supply requirements.

Selection Basis:

Choose substitute parts based on: (1) Active product status for long-term availability, (2) ROHS3 compliance for regulatory alignment, (3) packaging format matching PCB assembly equipment capabilities, and (4) inventory availability through authorized distributors.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-4122ELF replace RC1608F4122CS in existing designs?

A: Yes. CR0603-FX-4122ELF is a direct substitute with identical resistance (41.2 kOhms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between standard and automotive-qualified substitutes?

A: Automotive-qualified parts (AC0603FR-0741K2L, CRCW060341K2FKEA, ERJ-3EKF4122V, RMCF0603FT41K2) meet AEC-Q200 standard for automotive applications. They maintain identical electrical specifications to the RC1608F4122CS and are backward-compatible for non-automotive use. Selection depends on application requirements, not technical performance differences.

Q: Are there dimensional differences between substitute parts?

A: All substitute parts conform to 0603 (1608 Metric) package standard. Minor variations exist within tolerance: CRCW060341K2FKEA dimensions are 0.061" L x 0.033" W (1.55mm x 0.85mm) versus standard 0.063" L x 0.031" W (1.60mm x 0.80mm), and RMCF0603FT41K2 is 0.061" L x 0.031" W (1.55mm x 0.80mm). These variations remain within 0603 package specification and do not affect PCB footprint compatibility.

Q: Why is MCR03ERTF4122 listed if it is discontinued?

A: MCR03ERTF4122 is included for reference purposes only. It is electrically and mechanically equivalent but discontinued at DiGi Electronics. New designs should not specify this part. Existing inventory may be available through alternative distributors for legacy system support only.

Q: What packaging formats are available for substitutes?

A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. CR0603-FX-4122ELF and AC0603FR-0741K2L use Tape & Reel. RC0603FR-0741K2L, MCR03ERTF4122, CRCW060341K2FKEA, ERJ-3EKF4122V, and RMCF0603FT41K2 use Cut Tape & Digi-Reel. Packaging selection depends on assembly equipment and volume requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the RC1608F4122CS regulatory profile.