RC1608F1581CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1581CS is a 1.58 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently active in production status with 875 pieces available in inventory. Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design specifications permit the use of functionally identical components from qualified alternative manufacturers.

Substiute Parts

RC1608F1581CS

Samsung Electro-MechanicsIn Stock: 909RC1608F1581CS Datasheet

Current PartRFQ

CR0603-FX-1581ELF

Bourns Inc.In Stock: 14896CR0603-FX-1581ELF Datasheet

DirectRFQ

RC0603FR-071K58L

YAGEOIn Stock: 323614RC0603FR-071K58L Datasheet

DirectRFQ

MCR03ERTF1581

Rohm SemiconductorIn Stock: 4023MCR03ERTF1581 Datasheet

UpgradeRFQ

AC0603FR-071K58L

YAGEOIn Stock: 20191AC0603FR-071K58L Datasheet

SimilarRFQ

CRCW06031K58FKEA

Vishay DaleIn Stock: 37703CRCW06031K58FKEA Datasheet

SimilarRFQ

ERJ-3EKF1581V

Panasonic Electronic ComponentsIn Stock: 78656ERJ-3EKF1581V Datasheet

SimilarRFQ

RMCF0603FT1K58

Stackpole Electronics IncIn Stock: 64601RMCF0603FT1K58 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1581CS is determined by strict equivalence across the following critical parameters: resistance value (1.58 kOhms), tolerance (±1%), power rating (0.1W), package format (0603 / 1608 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and moisture sensitivity level (MSL 1). All substitute parts listed maintain identical electrical specifications and mechanical dimensions within the 0603 package standard. Compliance certifications including RoHS3 and REACH status are consistent across all qualified substitutes. Packaging format (Tape & Reel) is maintained for all direct equivalents to ensure compatibility with automated assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Standard Industrial Applications)

CR0603-FX-1581ELF (Bourns Inc.) and RC0603FR-071K58L (YAGEO) are direct functional equivalents to the RC1608F1581CS. Both parts maintain identical electrical and mechanical specifications with active product status and standard Tape & Reel packaging. These parts are suitable for applications where moisture-resistant thick film construction is the primary requirement and automotive qualification is not mandated.

Automotive-Qualified Alternatives

AC0603FR-071K58L (YAGEO), CRCW06031K58FKEA (Vishay Dale), ERJ-3EKF1581V (Panasonic Electronic Components), and RMCF0603FT1K58 (Stackpole Electronics Inc) are all AEC-Q200 qualified alternatives. These parts meet automotive industry standards and are suitable for applications requiring enhanced reliability documentation and automotive supply chain compliance. All four maintain identical electrical specifications and operating temperature ranges as the primary part.

Discontinued Part Status

MCR03ERTF1581 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs or long-term production requirements. This part is listed for reference only in cases where existing inventory must be managed or legacy system maintenance is required.

Inventory Availability Consideration

RC0603FR-071K58L (YAGEO) offers the highest inventory availability at 323,555 pieces, followed by ERJ-3EKF1581V (Panasonic) at 78,601 pieces and RMCF0603FT1K58 (Stackpole) at 64,496 pieces. These parts are recommended when supply chain continuity and extended lead-time protection are design considerations.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC1608F1581CS with any of the listed equivalent parts without design changes?

A: Yes. All listed substitute parts maintain identical resistance value (1.58 kOhms), tolerance (±1%), power rating (0.1W), package format (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Direct substitution is electrically and mechanically compatible at the component level.

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

A: Automotive-qualified parts (AC0603FR-071K58L, CRCW06031K58FKEA, ERJ-3EKF1581V, RMCF0603FT1K58) carry AEC-Q200 certification, indicating compliance with automotive industry reliability and testing standards. Standard versions (CR0603-FX-1581ELF, RC0603FR-071K58L) do not carry this certification. Selection depends on application requirements and supply chain specifications.

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

A: All substitute parts except MCR03ERTF1581 are supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes. MCR03ERTF1581 is supplied in Cut Tape & Digi-Reel format and is discontinued, making it unsuitable for new production.

Q: What is MSL 1 and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life with no special moisture control requirements during storage or handling. All listed parts maintain MSL 1 rating, ensuring compatibility with standard component storage and assembly procedures.

Q: Can I use automotive-qualified parts in non-automotive applications?

A: Yes. Automotive-qualified parts exceed standard industrial specifications and are fully compatible with non-automotive applications. Using AEC-Q200 qualified parts in standard applications introduces no compatibility issues and may provide additional reliability margin.

Q: Why is MCR03ERTF1581 listed if it is discontinued?

A: MCR03ERTF1581 is included for reference in cases where existing designs or legacy systems contain this part number. For new designs and ongoing production, active alternatives should be selected.

Q: Are there any dimensional differences between substitute parts?

A: All parts conform to the 0603 (1608 Metric) package standard. Minor dimensional variations exist within manufacturing tolerances (for example, CRCW06031K58FKEA has dimensions of 0.061" L x 0.033" W versus standard 0.063" L x 0.031" W), but these fall within the 0603 package specification and do not affect PCB layout or assembly compatibility.

Q: Which substitute part should I select for maximum inventory availability?

A: RC0603FR-071K58L (YAGEO) provides the highest inventory level at 323,555 pieces, offering optimal supply chain security and shortest lead times for high-volume production requirements.