RC1005F8661CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F8661CS is an 8.66 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component 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 and is RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

RC1005F8661CS

Samsung Electro-MechanicsIn Stock: 969RC1005F8661CS Datasheet

Current PartRFQ

RC0402FR-078K66L

YAGEOIn Stock: 755021RC0402FR-078K66L Datasheet

DirectRFQ

ERJ-2RKF8661X

Panasonic Electronic ComponentsIn Stock: 71852ERJ-2RKF8661X Datasheet

UpgradeRFQ

AC0402FR-078K66L

YAGEOIn Stock: 20863AC0402FR-078K66L Datasheet

SimilarRFQ

CRCW04028K66FKED

Vishay DaleIn Stock: 90440CRCW04028K66FKED Datasheet

SimilarRFQ

RMCF0402FT8K66

Stackpole Electronics IncIn Stock: 117127RMCF0402FT8K66 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F8661CS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 8.66 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 0402 (1005 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• RoHS3 Compliance (required)
• MSL Level 1 (required)

Secondary Consideration:

• Power rating may vary upward (higher power rating is acceptable for direct substitution)
• Automotive AEC-Q200 certification is an enhancement feature, not a substitution requirement

All identified substitute parts meet or exceed the primary criteria. The RC0402FR-078L and AC0402FR-078K66L represent direct equivalents. The ERJ-2RKF8661X represents an upgrade option with increased power rating (0.1W vs. 0.063W) and automotive qualification. The CRCW04028K66FKED and RMCF0402FT8K66 provide automotive-qualified alternatives with identical electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred for Standard Applications): RC0402FR-078K66L (YAGEO) is a direct functional equivalent with identical electrical specifications, power rating, and package format. This part is suitable for applications where automotive qualification is not required.

Direct Equivalent with Automotive Qualification: AC0402FR-078K66L (YAGEO), CRCW04028K66FKED (Vishay Dale), and RMCF0402FT8K66 (Stackpole Electronics Inc) are direct equivalents with AEC-Q200 automotive qualification. These parts are suitable for automotive and high-reliability applications requiring automotive-grade components.

Upgrade Option: ERJ-2RKF8661X (Panasonic Electronic Components) provides increased power dissipation capability (0.1W vs. 0.063W) with AEC-Q200 qualification. This part is suitable for applications requiring higher thermal margin or automotive qualification with enhanced power handling.

All substitute parts maintain RoHS3 compliance, MSL Level 1 rating, and identical operating temperature range. Selection should be based on application requirements, supply availability, and packaging preferences (Tape & Reel vs. Cut Tape & Digi-Reel).

Frequently Asked Questions (FAQ)

Q: Can RC0402FR-078K66L be used as a direct replacement for RC1005F8661CS? A: Yes. RC0402FR-078K66L is a direct equivalent with identical resistance (8.66 kΩ), tolerance (±1%), power rating (0.063W), package (0402), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Both parts are RoHS3 compliant with MSL Level 1.

Q: What is the difference between the standard RC1005F8661CS and the automotive-qualified alternatives? A: The RC1005F8661CS is a standard industrial-grade component. AC0402FR-078K66L, CRCW04028K66FKED, and RMCF0402FT8K66 carry AEC-Q200 automotive qualification, indicating compliance with automotive reliability and quality standards. Electrical specifications remain identical.

Q: Can ERJ-2RKF8661X replace RC1005F8661CS in all applications? A: ERJ-2RKF8661X is functionally compatible with higher power capability (0.1W vs. 0.063W). The increased power rating provides additional thermal margin and does not negatively impact circuit performance. This part is suitable for all applications where RC1005F8661CS is used.

Q: Are there packaging differences between substitute parts? A: Most substitute parts are supplied in Tape & Reel (TR) packaging, matching the original RC1005F8661CS. ERJ-2RKF8661X is supplied in Cut Tape (CT) & Digi-Reel format. All parts use identical 0402 (1005 Metric) package dimensions and footprint.

Q: Do all substitute parts meet RoHS3 compliance? A: Yes. All identified substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of RC1005F8661CS.

Q: What inventory levels are available for substitute parts? A: RC0402FR-078K66L (YAGEO) has the highest inventory at 754,950 pieces. RMCF0402FT8K66 (Stackpole) has 117,023 pieces. AC0402FR-078K66L (YAGEO) has 20,814 pieces. ERJ-2RKF8661X (Panasonic) has 71,801 pieces. Availability should be confirmed with suppliers for current stock status.