RC1005F391CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F391CS is a 390 Ohm ±1% thick film chip resistor in 0402 (1005 Metric) package manufactured by Samsung Electro-Mechanics. This component is rated at 0.063W (1/16W) power dissipation with moisture resistant construction and operates across -55°C to 155°C. The part is Active status and ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements, supply chain constraints, or manufacturing transitions necessitate component alternatives that maintain electrical and mechanical compatibility within specified tolerance parameters.

Substiute Parts

RC1005F391CS

Samsung Electro-MechanicsIn Stock: 855RC1005F391CS Datasheet

Current PartRFQ

CR0402-FX-3900GLF

Bourns Inc.In Stock: 32808CR0402-FX-3900GLF Datasheet

DirectRFQ

RC0402FR-07390RL

YAGEOIn Stock: 1558088RC0402FR-07390RL Datasheet

DirectRFQ

ERJ-2RKF3900X

Panasonic Electronic ComponentsIn Stock: 228337ERJ-2RKF3900X Datasheet

UpgradeRFQ

AC0402FR-07390RL

YAGEOIn Stock: 34942AC0402FR-07390RL Datasheet

SimilarRFQ

CRCW0402390RFKED

Vishay DaleIn Stock: 165721CRCW0402390RFKED Datasheet

SimilarRFQ

RMCF0402FT390R

Stackpole Electronics IncIn Stock: 181587RMCF0402FT390R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified based on electrical and mechanical parameter alignment with the main part RC1005F391CS:

Direct Substitutes maintain identical specifications across all critical parameters: 390 Ohm resistance, ±1% tolerance, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and ROHS3 compliance. These parts are interchangeable without circuit redesign.

Upgrade Substitutes exceed the power rating specification (0.1W vs. 0.063W) while maintaining all other electrical and mechanical parameters. These parts provide enhanced thermal performance and are suitable for applications requiring higher power dissipation margins.

Similar Substitutes maintain core electrical specifications (390 Ohm, ±1%, ±100ppm/°C, -55°C to 155°C, ROHS3) and package compatibility (0402) but include additional automotive qualification (AEC-Q200) or alternative moisture resistance features. These parts are compatible with the original specification and add functional certifications.

Substitution eligibility is determined by:

• Identical resistance value (390 Ohms)
• Matching tolerance (±1%)
• Equal or greater power rating (≥0.063W)
• Identical package (0402 / 1005 Metric)
• Matching temperature coefficient (±100ppm/°C)
• Matching operating temperature range (-55°C ~ 155°C)
• ROHS3 compliance
• MSL 1 rating

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Electrical and Mechanical Equivalence)

CR0402-FX-3900GLF (Bourns Inc.) and RC0402FR-07390RL (YAGEO) are direct substitutes for RC1005F391CS. Both maintain identical electrical specifications (390 Ω, ±1%, 0.063W) and package configuration (0402). RC0402FR-07390RL includes moisture resistant construction matching the original part. Both are Active status products with ROHS3 compliance and MSL 1 rating. Packaging format differs (Cut Tape & Digi-Reel vs. Tape & Reel) but does not affect electrical compatibility.

Upgrade Substitution (Enhanced Power Rating)

ERJ-2RKF3900X (Panasonic Electronic Components) provides increased power dissipation capability at 0.1W (1/10W) versus the original 0.063W (1/16W) while maintaining all other electrical parameters. This part includes Automotive AEC-Q200 qualification. The upgrade is suitable for applications requiring higher thermal margin or where power dissipation may approach the original rating limit.

Similar Substitution (Automotive Qualification)

AC0402FR-07390RL (YAGEO), CRCW0402390RFKED (Vishay Dale), and RMCF0402FT390R (Stackpole Electronics Inc) maintain identical electrical specifications and package compatibility with the original part while adding Automotive AEC-Q200 qualification. AC0402FR-07390RL additionally includes moisture resistant construction. These parts are suitable for applications requiring automotive-grade component certification or where supply chain diversification across qualified manufacturers is required.

All substitute parts are Active status products with ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and handling compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-3900GLF replace RC1005F391CS in all applications?

A: CR0402-FX-3900GLF is electrically and mechanically equivalent to RC1005F391CS. Both parts specify 390 Ω ±1%, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Reel). Direct substitution is valid for all applications within the specified electrical and thermal parameters.

Q: What is the difference between RC0402FR-07390RL and CR0402-FX-3900GLF?

A: Both parts are direct substitutes with identical electrical specifications. RC0402FR-07390RL (YAGEO) includes moisture resistant construction, matching the original RC1005F391CS feature set. CR0402-FX-3900GLF (Bourns Inc.) does not specify moisture resistant features. Selection depends on application moisture exposure requirements and preferred supplier.

Q: When should ERJ-2RKF3900X be used instead of the original part?

A: ERJ-2RKF3900X is an upgrade substitute with 0.1W power rating versus the original 0.063W. Use this part when circuit analysis indicates power dissipation approaching or exceeding 0.063W, or when thermal margin enhancement is required. The part maintains all other electrical specifications and adds Automotive AEC-Q200 qualification.

Q: Are automotive-qualified parts (AC0402FR-07390RL, CRCW0402390RFKED, RMCF0402FT390R) suitable for non-automotive applications?

A: Automotive-qualified parts meet or exceed commercial-grade specifications. These parts are suitable for any application within their specified electrical and thermal parameters. Automotive qualification represents additional testing and quality assurance and does not restrict use in non-automotive applications.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 rating indicates unlimited shelf life without moisture bake-out requirements. All listed parts, including the original RC1005F391CS, carry MSL 1 rating, ensuring identical moisture handling and storage requirements across all substitutes.

Q: Can these parts be mixed in the same production batch?

A: All listed parts maintain identical electrical specifications (390 Ω ±1%, 0.063W or higher, ±100ppm/°C, -55°C to 155°C) and package configuration (0402). Mixing parts from different manufacturers is permissible provided circuit design does not depend on specific manufacturer features. Packaging format differences (Tape & Reel vs. Cut Tape & Digi-Reel) may affect assembly line compatibility and should be evaluated with manufacturing equipment specifications.

Q: What is the height difference between AC0402FR-07390RL and other 0402 parts?

A: AC0402FR-07390RL specifies maximum seated height of 0.015" (0.37mm) versus 0.016" (0.40mm) for most other listed parts. This 0.001" difference is within typical PCB assembly tolerances and does not affect electrical compatibility or standard reflow soldering processes.

Q: Are all substitute parts ROHS3 compliant?

A: All listed parts, including the original RC1005F391CS, are ROHS3 compliant. Regulatory compliance is maintained across all direct and upgrade substitutes.