RC1005J390CS Equivalent & Substitute Parts

Part Overview

The RC1005J390CS is a 39 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated for 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating. As an active product with established supply availability, equivalent and substitute parts are identified to support design flexibility, supply chain alternatives, and performance upgrades where application requirements permit.

Substiute Parts

RC1005J390CS

Samsung Electro-MechanicsIn Stock: 874RC1005J390CS Datasheet

Current PartRFQ

RC0402JR-0739RL

YAGEOIn Stock: 191373RC0402JR-0739RL Datasheet

DirectRFQ

ERJ-2RKF39R0X

Panasonic Electronic ComponentsIn Stock: 365165ERJ-2RKF39R0X Datasheet

UpgradeRFQ

RC0402FR-0739RL

YAGEOIn Stock: 290492RC0402FR-0739RL Datasheet

UpgradeRFQ

RMCF0402FT39R0

Stackpole Electronics IncIn Stock: 99563RMCF0402FT39R0 Datasheet

UpgradeRFQ

RMCF0402JT39R0

Stackpole Electronics IncIn Stock: 232847RMCF0402JT39R0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1005J390CS is determined by strict equivalence in the following core parameters: resistance value (39 Ohms), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, MSL 1).

Substitute parts are grouped into three categories based on tolerance and power rating specifications:

Direct Equivalents maintain identical tolerance (±5%) and power rating (0.063W / 1/16W) specifications. These parts are pin-compatible and electrically interchangeable without circuit redesign.

Upgrade Substitutes offer improved tolerance (±1%) while maintaining the same power rating (0.063W / 1/16W) or increased power rating (0.1W / 1/10W). These parts provide enhanced performance characteristics and are suitable for applications requiring tighter resistance tolerances or higher power dissipation margins.

Similar Substitutes maintain tolerance (±5%) and power rating (0.063W / 1/16W) specifications but introduce additional automotive qualification (AEC-Q200) for applications requiring automotive-grade reliability.

All substitute parts maintain identical package dimensions, termination count (2), and environmental compliance ratings.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: RC0402JR-0739RL (YAGEO) is a direct functional equivalent to RC1005J390CS, maintaining identical tolerance (±5%), power rating (0.063W), and moisture resistant construction. Both parts are ROHS3 compliant with MSL 1 rating and support identical operating temperature ranges. This part is suitable for direct substitution in applications where the original specification is maintained.

Tolerance Upgrade Selection: RC0402FR-0739RL (YAGEO) and RMCF0402FT39R0 (Stackpole Electronics Inc) provide ±1% tolerance improvement over the original ±5% specification while maintaining 0.063W power rating and moisture resistant or automotive-grade construction. These parts are appropriate for applications requiring tighter resistance tolerances without increasing power dissipation requirements.

Power Rating and Tolerance Upgrade Selection: ERJ-2RKF39R0X (Panasonic Electronic Components) combines ±1% tolerance with increased 0.1W power rating and automotive AEC-Q200 qualification. This part is suitable for applications requiring enhanced thermal margin and automotive-grade reliability.

Automotive-Grade Selection: RMCF0402JT39R0 (Stackpole Electronics Inc) maintains the original ±5% tolerance and 0.063W power rating while adding automotive AEC-Q200 qualification. This part is appropriate for automotive applications requiring AEC-Q200 compliance without tolerance or power rating changes.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical package dimensions (0402 / 1005 Metric) with 2 terminations.

Frequently Asked Questions (FAQ)

Q: Can RC0402JR-0739RL replace RC1005J390CS directly without circuit modification?

A: Yes. RC0402JR-0739RL is a direct equivalent with identical resistance (39 Ohms), tolerance (±5%), power rating (0.063W), package format (0402), and operating temperature range (-55°C ~ 155°C). No circuit modification is required.

Q: What is the difference between the tolerance options in the substitute parts?

A: The original RC1005J390CS and RMCF0402JT39R0 specify ±5% tolerance. RC0402FR-0739RL, RMCF0402FT39R0, and ERJ-2RKF39R0X specify ±1% tolerance. Tighter tolerance (±1%) provides more precise resistance values and is suitable for applications with strict circuit performance requirements.

Q: Why does ERJ-2RKF39R0X have a higher power rating (0.1W vs 0.063W)?

A: ERJ-2RKF39R0X is rated for 0.1W (1/10W) compared to the original 0.063W (1/16W). This higher power rating provides increased thermal margin and is suitable for applications with higher power dissipation requirements or thermal stress conditions.

Q: What is AEC-Q200 qualification and when should I use it?

A: AEC-Q200 is an automotive industry qualification standard for passive components. Parts with AEC-Q200 rating (ERJ-2RKF39R0X, RMCF0402FT39R0, RMCF0402JT39R0) are suitable for automotive applications requiring automotive-grade reliability and qualification compliance.

Q: Are all substitute parts available in the same packaging options?

A: Packaging differs by manufacturer. RC1005J390CS and ERJ-2RKF39R0X and RMCF0402FT39R0 are supplied in Tape & Reel (TR) format. RC0402JR-0739RL, RC0402FR-0739RL, and RMCF0402JT39R0 are supplied in Cut Tape (CT) & Digi-Reel® format. Verify packaging compatibility with your assembly process requirements.

Q: Do all parts meet ROHS3 and MSL 1 requirements?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance of the original RC1005J390CS.

Q: What is the temperature coefficient specification and does it differ across substitutes?

A: All parts, including the original and all substitutes, specify ±100ppm/°C temperature coefficient. This parameter is identical across all options and does not affect substitution selection.