RC1005J3R9CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005J3R9CS is a 3.9 Ohms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package format. This component is rated for 0.063W (1/16W) power dissipation and is designed for moisture-resistant applications across industrial and consumer electronics. The part maintains Active product status with 934 units currently in stock. Substitute parts are identified to address supply chain continuity, packaging format preferences, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

RC1005J3R9CS

Samsung Electro-MechanicsIn Stock: 992RC1005J3R9CS Datasheet

Current PartRFQ

RC0402JR-073R9L

YAGEOIn Stock: 113946RC0402JR-073R9L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005J3R9CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 3.9 Ohms
• Tolerance: ±5%
• Power rating: 0.063W (1/16W)

Mechanical Parameters (Must Match Exactly):

• Package format: 0402 (1005 Metric)
• Physical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)
• Height - Seated (Max): 0.016" (0.40mm)
• Number of terminations: 2

Environmental & Compliance Parameters (Must Match or Exceed):

• Operating temperature range: -55°C ~ 155°C (minimum)
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The RC0402JR-073R9L from YAGEO qualifies as a direct substitute based on complete alignment with all electrical, mechanical, and environmental specifications. Packaging format differs (Tape & Reel vs. Cut Tape), which affects procurement and handling but does not impact functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The RC0402JR-073R9L from YAGEO is a qualified direct substitute for the RC1005J3R9CS from Samsung Electro-Mechanics. Both components satisfy identical electrical specifications (3.9 Ohms ±5%, 0.063W) and mechanical requirements (0402 package). Both maintain full compliance with ROHS3 and REACH regulations, with MSL 1 (Unlimited) moisture sensitivity ratings suitable for unrestricted storage and handling.

The YAGEO substitute demonstrates superior temperature coefficient performance (±200ppm/°C versus ±300ppm/°C), indicating tighter resistance stability across the operating temperature range of -55°C to 155°C. This characteristic provides enhanced reliability in temperature-sensitive applications without introducing any compatibility concerns.

Packaging format represents the only operational difference: the Samsung part is supplied in Cut Tape format, while the YAGEO substitute is supplied in Tape & Reel format. This distinction affects procurement logistics and automated assembly processes but does not impact electrical or mechanical performance. Selection between these formats depends on production volume requirements and assembly equipment compatibility.

Both parts maintain Active product status with substantial inventory availability (934 units for Samsung; 113,855 units for YAGEO), ensuring supply chain continuity for current and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can RC0402JR-073R9L replace RC1005J3R9CS in existing designs without circuit modification?

A: Yes. Both components are electrically and mechanically identical across all critical parameters: 3.9 Ohms ±5% resistance, 0.063W power rating, 0402 package format, and -55°C to 155°C operating range. No circuit design changes are required.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging supplies individual component strips for manual or semi-automated assembly. Tape & Reel packaging supplies components on continuous reels optimized for high-speed automated pick-and-place equipment. Both formats contain identical components; packaging selection depends on production volume and assembly process requirements.

Q: Does the YAGEO substitute have better temperature stability?

A: The RC0402JR-073R9L exhibits a temperature coefficient of ±200ppm/°C compared to the Samsung part's ±300ppm/°C. This indicates superior resistance stability across temperature variations, providing enhanced performance in temperature-sensitive applications.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both RC1005J3R9CS and RC0402JR-073R9L are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance restrictions for electronics manufacturing.

Q: What does MSL 1 (Unlimited) mean for component handling?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These parts do not require special dry-pack storage, desiccant handling, or bake-out procedures prior to soldering, simplifying inventory management and assembly logistics.

Q: Can these 0402 resistors be hand-soldered?

A: The 0402 (1005 Metric) package format is extremely small (1.00mm x 0.50mm) and is designed primarily for automated surface-mount assembly. Hand soldering is not recommended due to component size and thermal management challenges. Use automated reflow soldering processes.

Q: What is the HTSUS code significance for these parts?

A: Both components share the HTSUS code 8533.21.0030, classifying them identically for customs and tariff purposes in international trade documentation.