RC1005F26R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F26R1CS is a 26.1 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated at 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and MSL Level 1 rating, indicating unlimited shelf life under standard storage conditions. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

RC1005F26R1CS

Samsung Electro-MechanicsIn Stock: 1242RC1005F26R1CS Datasheet

Current PartRFQ

RC0402FR-0726R1L

YAGEOIn Stock: 7111RC0402FR-0726R1L Datasheet

DirectRFQ

ERJ-2RKF26R1X

Panasonic Electronic ComponentsIn Stock: 216129ERJ-2RKF26R1X Datasheet

UpgradeRFQ

CRCW040226R1FKED

Vishay DaleIn Stock: 24422CRCW040226R1FKED Datasheet

SimilarRFQ

RMCF0402FT26R1

Stackpole Electronics IncIn Stock: 10928RMCF0402FT26R1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1005F26R1CS are classified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Parameters (Must Match):

• Resistance value: 26.1 Ohms
• Tolerance: ±1%
• Package: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Termination count: 2
• Physical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)
• Height (seated max): 0.016" (0.40mm)
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)

Allowable Variation:

• Power rating: 0.063W (1/16W) or higher ratings (0.1W / 1/10W) are acceptable as upgrades
• Automotive qualification (AEC-Q200): Optional enhancement, does not restrict substitution

All identified substitute parts maintain identical electrical performance within the specified tolerance and operate across the full temperature range. Parts with higher power ratings provide design margin without affecting circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (RC0402FR-0726R1L - YAGEO): This part provides identical electrical and mechanical specifications to the RC1005F26R1CS. Both devices share the same 0.063W power rating, tolerance, and temperature characteristics. Selection is appropriate for standard applications requiring no additional qualification requirements.

Upgrade Option (ERJ-2RKF26R1X - Panasonic): This part offers enhanced power rating at 0.1W (1/10W) while maintaining all other critical parameters. The addition of AEC-Q200 automotive qualification provides extended reliability validation. This option is suitable for applications requiring higher thermal margin or automotive-grade component certification.

Automotive-Qualified Alternatives (CRCW040226R1FKED - Vishay Dale, RMCF0402FT26R1 - Stackpole): Both parts maintain the 0.063W power rating with AEC-Q200 automotive qualification. These options are specified for designs requiring automotive-grade components with documented reliability testing. All three substitute parts (Panasonic, Vishay Dale, Stackpole) carry AEC-Q200 certification, supporting applications in automotive and high-reliability environments.

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can RC0402FR-0726R1L (YAGEO) be used as a direct replacement for RC1005F26R1CS (Samsung)?

A: Yes. Both parts share identical resistance (26.1 Ohms), tolerance (±1%), power rating (0.063W), package (0402), composition (thick film), temperature coefficient (±100ppm/°C), operating range (-55 to 155°C), and compliance ratings (ROHS3, MSL 1). No circuit redesign is required.

Q: What is the difference between the 0.063W and 0.1W power-rated options?

A: The ERJ-2RKF26R1X (Panasonic) is rated at 0.1W compared to 0.063W for other parts. Higher power rating indicates greater thermal dissipation capability. In circuits operating at or below 0.063W, both ratings are functionally equivalent. The 0.1W option provides additional thermal margin and is suitable for applications with higher power density or thermal stress.

Q: Are the automotive-qualified parts (AEC-Q200) interchangeable with non-automotive versions?

A: Yes. AEC-Q200 qualification is an additional validation layer indicating automotive-grade reliability testing. Parts with AEC-Q200 certification (Panasonic ERJ-2RKF26R1X, Vishay Dale CRCW040226R1FKED, Stackpole RMCF0402FT26R1) are fully compatible with applications using standard-grade parts. AEC-Q200 parts can be substituted into non-automotive designs without functional impact.

Q: Do all substitute parts use the same 0402 package dimensions?

A: Yes. All parts listed maintain identical 0402 (1005 Metric) package specifications: 0.039" L x 0.020" W (1.00mm x 0.50mm) with maximum seated height of 0.016" (0.40mm). PCB footprints and assembly processes are interchangeable across all listed parts.

Q: What is MSL 1 (Unlimited) moisture sensitivity rating?

A: MSL 1 indicates the lowest moisture sensitivity level. Parts with this rating require no special moisture control during storage, handling, or assembly. Standard warehouse conditions and normal manufacturing processes are sufficient. All listed parts carry MSL 1 rating.

Q: Are there any restrictions on mixing manufacturers in a single design?

A: No. All substitute parts meet identical electrical and mechanical specifications. Multiple manufacturers can be used within the same design or production batch without functional or compatibility issues. This approach supports supply chain flexibility and procurement optimization.