RC1608F1053CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1053CS is a 105 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 727 pieces currently in stock. The part is designed for general-purpose applications requiring moisture-resistant thick film construction and operates across the temperature range of -55°C to 155°C.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints require alternative sourcing, or when design specifications permit the use of functionally identical components from qualified manufacturers. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct board-level replacement without circuit redesign.

Substiute Parts

RC1608F1053CS

Samsung Electro-MechanicsIn Stock: 740RC1608F1053CS Datasheet

Current PartRFQ

CR0603-FX-1053ELF

Bourns Inc.In Stock: 149650CR0603-FX-1053ELF Datasheet

DirectRFQ

RC0603FR-07105KL

YAGEOIn Stock: 236341RC0603FR-07105KL Datasheet

DirectRFQ

MCR03ERTF1053

Rohm SemiconductorIn Stock: 684MCR03ERTF1053 Datasheet

UpgradeRFQ

AC0603FR-07105KL

YAGEOIn Stock: 193728AC0603FR-07105KL Datasheet

SimilarRFQ

CRCW0603105KFKEA

Vishay DaleIn Stock: 44049CRCW0603105KFKEA Datasheet

SimilarRFQ

CRCW0603105KFKTA

Vishay DaleIn Stock: 5964CRCW0603105KFKTA Datasheet

SimilarRFQ

ERJ-3EKF1053V

Panasonic Electronic ComponentsIn Stock: 31658ERJ-3EKF1053V Datasheet

SimilarRFQ

RMCF0603FT105K

Stackpole Electronics IncIn Stock: 44983RMCF0603FT105K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1053CS is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match exactly for direct substitution:

Critical Parameters (Must Match Exactly):

• Resistance value: 105 kOhms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Package format: 0603 (1608 Metric)
• Composition: Thick Film
• Number of terminations: 2

Important Parameters (Must Match or Exceed):

• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture Sensitivity Level: 1 (Unlimited)

Compliance Parameters:

• RoHS3 compliance required for standard applications
• REACH compliance status documented

Substitute parts are classified into three categories based on their relationship to the main part:

Direct Manufacturer Substitutes: Parts that are functionally and mechanically identical with identical electrical specifications and packaging. These parts can be used as one-to-one replacements without any circuit or assembly modifications.

Upgrade Substitutes: Parts that meet or exceed all electrical and mechanical specifications but may have different product status or availability. These parts are suitable for replacement but may have limited future availability.

Similar Substitutes: Parts that meet all critical electrical specifications and mechanical compatibility but may include additional features (such as automotive AEC-Q200 qualification) or have minor dimensional variations within acceptable tolerances. These parts are suitable for applications where the additional features do not create conflicts with existing circuit design.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Recommended for One-to-One Replacement):

CR0603-FX-1053ELF (Bourns Inc.) and RC0603FR-07105KL (YAGEO) are direct functional equivalents to the RC1608F1053CS. Both parts maintain identical electrical specifications, mechanical dimensions, and compliance certifications. CR0603-FX-1053ELF offers significantly higher inventory availability (149,639 pieces) compared to the primary part. RC0603FR-07105KL provides 236,245 pieces in stock and is widely used as a standard substitute across multiple applications.

Upgrade Substitutes (Limited Availability):

MCR03ERTF1053 (Rohm Semiconductor) meets all electrical and mechanical specifications but carries a Discontinued at DiGi Electronics status. This part should be used only when other active alternatives are unavailable, as future procurement may become problematic.

Similar Substitutes with Additional Features (Suitable for Automotive and High-Reliability Applications):

AC0603FR-07105KL (YAGEO), CRCW0603105KFKEA (Vishay Dale), ERJ-3EKF1053V (Panasonic Electronic Components), and RMCF0603FT105K (Stackpole Electronics Inc.) all include AEC-Q200 automotive qualification. These parts are suitable for applications requiring automotive-grade reliability and can be used as direct replacements in non-automotive applications without performance degradation.

Compliance Considerations:

CRCW0603105KFKTA (Vishay Dale) is RoHS non-compliant and REACH Affected. This part should not be selected for new designs or applications requiring RoHS3 compliance. All other substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the primary part's compliance profile.

Inventory and Availability:

For applications requiring immediate availability, RC0603FR-07105KL (236,245 pieces) and CR0603-FX-1053ELF (149,639 pieces) provide the highest stock levels. CRCW0603105KFKEA (44,014 pieces) and RMCF0603FT105K (44,962 pieces) offer moderate availability. ERJ-3EKF1053V (31,565 pieces) and CRCW0603105KFKTA (5,910 pieces) have lower inventory levels.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for RC1608F1053CS without modifying my circuit?

A: Yes. All listed substitute parts maintain identical electrical specifications (105 kOhms ±1%, 0.1W power rating) and mechanical compatibility (0603 package format). Direct board-level substitution is possible without circuit modification. However, verify that your application does not have specific manufacturer requirements or qualification restrictions.

Q: What is the difference between Direct Substitutes, Upgrade Substitutes, and Similar Substitutes?

A: Direct Substitutes (CR0603-FX-1053ELF, RC0603FR-07105KL) are functionally identical with no additional features or restrictions. Upgrade Substitutes (MCR03ERTF1053) meet all specifications but have limited availability. Similar Substitutes (AC0603FR-07105KL, CRCW0603105KFKEA, ERJ-3EKF1053V, RMCF0603FT105K) include additional automotive AEC-Q200 qualification, making them suitable for high-reliability applications.

Q: Are the automotive-qualified parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts exceed the performance and reliability requirements of standard industrial applications. Using AEC-Q200 qualified parts in non-automotive circuits provides additional margin and reliability without any negative effects.

Q: What does RoHS3 compliance mean, and why does it matter?

A: RoHS3 compliance indicates that the component meets the Restriction of Hazardous Substances directive, restricting the use of specific hazardous materials including lead, cadmium, and mercury. RoHS3 compliance is required for products sold in the European Union and is increasingly required by global manufacturers. CRCW0603105KFKTA is RoHS non-compliant and should not be used in applications requiring regulatory compliance.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes. All substitute parts maintain identical electrical specifications and mechanical compatibility. Mixing different manufacturers' parts on the same board is acceptable from an engineering standpoint. However, verify that your procurement and quality assurance processes support multiple part numbers for the same function.

Q: What is the significance of the 0603 package designation?

A: The 0603 package (1608 Metric) is a standardized surface-mount resistor size measuring 0.063" L x 0.031" W (1.60mm x 0.80mm). All listed substitute parts use this identical package format, ensuring mechanical compatibility with existing PCB footprints and assembly equipment. Minor dimensional variations (such as CRCW0603105KFKEA at 0.061" L x 0.033" W) remain within standard PCB design tolerances.

Q: Why would I choose one substitute over another if they are all electrically equivalent?

A: Selection criteria include: (1) Inventory availability for supply chain continuity; (2) Compliance requirements (RoHS3, REACH); (3) Application-specific qualifications (AEC-Q200 for automotive); (4) Packaging format (Tape & Reel vs. Cut Tape); (5) Manufacturer preference based on established supplier relationships; (6) Cost considerations based on volume pricing.

Q: Is the Temperature Coefficient specification important for my application?

A: The Temperature Coefficient (±100ppm/°C) indicates how much the resistance value changes with temperature. All substitute parts maintain identical temperature coefficients. For precision analog circuits, temperature coefficient becomes critical. For digital logic and general-purpose applications, this specification is typically non-critical. Verify your circuit's temperature stability requirements before final part selection.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. These parts can be stored indefinitely without special moisture-control packaging and do not require baking before reflow soldering. All listed substitute parts carry identical MSL 1 ratings, eliminating moisture-related handling concerns.