RC0603F121CS Equivalent & Substitute Parts

Part Overview

The RC0603F121CS is a 120 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in a 0201 (0603 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental operating parameters to ensure direct functional interchangeability in circuit applications.

Substiute Parts

RC0603F121CS

Samsung Electro-MechanicsIn Stock: 1115RC0603F121CS Datasheet

Current PartRFQ

CRCW0201120RFKED

Vishay DaleIn Stock: 19348CRCW0201120RFKED Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC0603F121CS are identified based on the following critical parameters that determine functional interchangeability:

Electrical Parameters (Must Match):

• Resistance value: 120 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Composition: Thick Film

Mechanical Parameters (Must Match):

• Package designation: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height - Seated (Max): 0.010" (0.26mm)
• Number of terminations: 2

Environmental & Compliance Parameters (Must Match or Exceed):

• Operating temperature range: -55°C ~ 125°C (minimum)
• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The CRCW0201120RFKED from Vishay Dale meets all mandatory electrical and mechanical criteria for direct substitution. This part maintains identical resistance, tolerance, power rating, package type, and physical dimensions while providing enhanced temperature coefficient performance and extended upper operating temperature capability.

Parameter Comparison

Engineering Selection Recommendations

The CRCW0201120RFKED from Vishay Dale is a direct functional equivalent to the RC0603F121CS. Both components satisfy identical electrical specifications (120 Ohms ±1% at 0.05W), mechanical requirements (0201 package with matching dimensions), and compliance certifications (RoHS3, MSL 1).

Selection between these parts should be based on:

Availability and Lead Time: The CRCW0201120RFKED maintains higher inventory levels (19,311 Pcs in stock versus 1,022 Pcs for the RC0603F121CS), providing improved supply chain reliability.

Performance Characteristics: The CRCW0201120RFKED offers superior temperature coefficient stability (±100ppm/°C versus ±250ppm/°C) and extended upper operating temperature capability (-55°C ~ 155°C versus -55°C ~ 125°C). These enhancements provide additional design margin in temperature-sensitive applications without compromising compatibility.

Compliance Status: Both parts maintain identical RoHS3 compliance and unlimited moisture sensitivity ratings, ensuring equivalent environmental performance and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the CRCW0201120RFKED replace the RC0603F121CS in existing designs?

A: Yes. The CRCW0201120RFKED is a direct substitute. Both components share identical resistance (120 Ohms), tolerance (±1%), power rating (0.05W), package type (0201), physical dimensions, and compliance certifications. No circuit modifications or PCB layout changes are required.

Q: What are the key differences between these two parts?

A: The primary differences are temperature coefficient (±100ppm/°C for Vishay versus ±250ppm/°C for Samsung) and maximum operating temperature (155°C for Vishay versus 125°C for Samsung). The Vishay part provides superior thermal stability and extended temperature range, making it suitable for more demanding thermal environments.

Q: Are the physical dimensions identical?

A: Yes. Both parts are packaged in 0201 (0603 Metric) with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are mechanically interchangeable on PCBs designed for either component.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the RC0603F121CS and CRCW0201120RFKED carry MSL 1 (Unlimited) ratings, indicating identical moisture handling requirements and storage conditions.

Q: Which part should be selected for new designs?

A: Selection should be based on supply chain requirements and application thermal demands. The CRCW0201120RFKED offers superior temperature coefficient performance and extended operating range, making it suitable for applications requiring enhanced thermal stability. The RC0603F121CS remains a valid choice where Samsung supply chain preference or existing qualification exists.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RC0603F121CS and CRCW0201120RFKED are fully RoHS3 compliant with REACH Unaffected status, meeting identical environmental and regulatory requirements.