RC1005F394CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F394CS is a 390 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format with 1/16W power rating. This component is classified as Active product status with moisture-resistant characteristics and operates across the temperature range of -55°C to 155°C. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design specifications allow for alternative qualified components that meet identical electrical and mechanical parameters.

Substiute Parts

RC1005F394CS

Samsung Electro-MechanicsIn Stock: 1179RC1005F394CS Datasheet

Current PartRFQ

CR0402-FX-3903GLF

Bourns Inc.In Stock: 40570CR0402-FX-3903GLF Datasheet

DirectRFQ

CRG0402F390K

TE Connectivity Passive ProductIn Stock: 20792CRG0402F390K Datasheet

DirectRFQ

RC0402FR-07390KL

YAGEOIn Stock: 499740RC0402FR-07390KL Datasheet

DirectRFQ

ERJ-2RKF3903X

Panasonic Electronic ComponentsIn Stock: 95435ERJ-2RKF3903X Datasheet

UpgradeRFQ

AC0402FR-07390KL

YAGEOIn Stock: 3247AC0402FR-07390KL Datasheet

SimilarRFQ

AF0402FR-07390KL

YAGEOIn Stock: 21112AF0402FR-07390KL Datasheet

SimilarRFQ

CRCW0402390KFKED

Vishay DaleIn Stock: 101470CRCW0402390KFKED Datasheet

SimilarRFQ

RMCF0402FT390K

Stackpole Electronics IncIn Stock: 84286RMCF0402FT390K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F394CS is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Resistance value: 390 kOhms
• Tolerance: ±1%
• Package / Case: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Terminations: 2
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)

Direct Substitutes maintain all parameters identical to the main part, including power rating of 0.063W (1/16W) and physical dimensions.

Upgrade Substitutes exceed the main part specifications in power rating (0.1W / 1/10W) while maintaining all other critical parameters. These parts are suitable for applications where higher power dissipation capability is beneficial.

Similar Substitutes maintain core electrical parameters but may include additional features such as automotive AEC-Q200 qualification or anti-sulfur properties. Physical dimensions may vary slightly within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (CR0402-FX-3903GLF, CRG0402F390K, RC0402FR-07390KL) are electrically and mechanically equivalent to the RC1005F394CS. These parts maintain identical resistance, tolerance, power rating, package dimensions, and temperature characteristics. Selection among direct substitutes is based on supply availability and procurement lead times. RC0402FR-07390KL from YAGEO includes moisture-resistant properties matching the original part specification.

Upgrade Substitute (ERJ-2RKF3903X) from Panasonic provides increased power rating of 0.1W (1/10W) compared to the 0.063W rating of the main part. This component is suitable for applications where thermal margin improvement is desired. The part carries AEC-Q200 automotive qualification, indicating enhanced reliability screening and qualification standards.

Similar Substitutes (AC0402FR-07390KL, AF0402FR-07390KL, CRCW0402390KFKED, RMCF0402FT390K) maintain all core electrical parameters while incorporating automotive AEC-Q200 qualification. AC0402FR-07390KL and AF0402FR-07390KL include moisture-resistant or anti-sulfur features respectively. CRCW0402390KFKED is available in Cut Tape (CT) & Digi-Reel® packaging in addition to standard Tape & Reel format. These parts are appropriate for applications requiring automotive-grade reliability or enhanced environmental protection.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-3903GLF replace RC1005F394CS in all applications?

A: Yes. CR0402-FX-3903GLF is a direct substitute with identical electrical specifications (390 kOhms ±1%, 0.063W), package dimensions (0402), temperature range (-55°C to 155°C), and compliance ratings (ROHS3, MSL 1). Physical footprint and soldering characteristics are equivalent.

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes (CR0402-FX-3903GLF, CRG0402F390K, RC0402FR-07390KL) maintain all specifications identical to the main part. Similar substitutes add features such as automotive AEC-Q200 qualification or anti-sulfur properties while maintaining core electrical parameters. Similar substitutes are suitable for applications where enhanced qualification or environmental protection is beneficial.

Q: Is ERJ-2RKF3903X compatible with RC1005F394CS?

A: ERJ-2RKF3903X is compatible as an upgrade substitute. It maintains identical resistance (390 kOhms), tolerance (±1%), package (0402), and temperature range (-55°C to 155°C). The power rating is increased from 0.063W to 0.1W, providing additional thermal capability. Physical dimensions remain within acceptable tolerances for PCB footprint compatibility.

Q: Why do some substitutes include AEC-Q200 qualification?

A: AEC-Q200 is an automotive industry qualification standard indicating enhanced reliability screening, qualification testing, and manufacturing controls. Parts with AEC-Q200 qualification (ERJ-2RKF3903X, AC0402FR-07390KL, AF0402FR-07390KL, CRCW0402390KFKED, RMCF0402FT390K) are suitable for automotive applications or applications requiring higher reliability assurance.

Q: Are there packaging differences among substitute parts?

A: Most substitute parts are supplied in Tape & Reel (TR) packaging. CRCW0402390KFKED is available in both Cut Tape (CT) & Digi-Reel® and standard Tape & Reel formats. Packaging selection depends on assembly process requirements and order quantities.

Q: What does MSL 1 (Unlimited) mean for these resistors?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. This rating applies to all listed parts and eliminates moisture sensitivity concerns for standard PCB assembly processes.

Q: Can RC0402FR-07390KL be used as a direct replacement for RC1005F394CS?

A: Yes. RC0402FR-07390KL is a direct substitute manufactured by YAGEO. It matches all critical parameters: 390 kOhms ±1%, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and includes moisture-resistant properties identical to the main part.

Q: What is the significance of anti-sulfur features in AF0402FR-07390KL?

A: Anti-sulfur properties protect the resistor from sulfur-containing environmental contaminants that can degrade component performance in certain industrial or corrosive environments. This feature is provided in addition to standard specifications and does not affect electrical compatibility with applications not requiring this protection.