RC0402F121CS Equivalent & Substitute Parts

Part Overview

The RC0402F121CS is a 120 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.03W (1/32W) power dissipation in the 01005 (0402 Metric) package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings are maintained across alternative manufacturers while preserving circuit performance and reliability requirements.

Substiute Parts

RC0402F121CS

Samsung Electro-MechanicsIn Stock: 817RC0402F121CS Datasheet

Current PartRFQ

CRCW0100120RFREL

Vishay DaleIn Stock: 37252CRCW0100120RFREL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC0402F121CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (120 Ohms), tolerance (±1%), and power rating (0.03W / 1/32W) must be identical. Temperature coefficient (±250ppm/°C) and operating temperature range (-55°C to 125°C) establish thermal performance boundaries.

Mechanical Specifications: Package designation (01005 / 0402 Metric), physical dimensions (0.40mm × 0.20mm length and width), and maximum seated height (0.15mm) ensure PCB layout and assembly compatibility.

Material & Composition: Thick film construction maintains electrical characteristics and frequency response consistency.

Compliance & Environmental: RoHS3 compliance and MSL 1 rating (unlimited moisture sensitivity) are mandatory for regulatory and reliability equivalence.

The CRCW0100120RFREL from Vishay Dale meets all specified parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The CRCW0100120RFREL qualifies as a direct equivalent substitute for the RC0402F121CS based on complete parameter alignment. Both components maintain Active product status and carry identical RoHS3 and REACH compliance certifications. Selection between these parts may be determined by availability, lead time, packaging format (both supplied in Tape & Reel), or supply chain requirements. No electrical or mechanical re-qualification is necessary when substituting between these components in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the CRCW0100120RFREL replace the RC0402F121CS in production assemblies?

A: Yes. Both components are electrically and mechanically equivalent across all specified parameters. No circuit redesign or re-testing is required for direct substitution.

Q: Are there any differences in moisture sensitivity between these parts?

A: No. Both components carry MSL 1 (Unlimited) rating, indicating identical moisture handling and storage requirements.

Q: Do these resistors have different temperature coefficients?

A: No. Both components specify ±250ppm/°C temperature coefficient, ensuring equivalent thermal stability across the -55°C to 125°C operating range.

Q: Is the 01005 package the same as 0402 Metric?

A: Yes. 01005 and 0402 Metric are equivalent designations for the same physical package. Both components use identical dimensions (0.40mm × 0.20mm) and maximum seated height (0.15mm).

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC0402F121CS and CRCW0100120RFREL carry full RoHS3 compliance certification and are REACH Unaffected.

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance ensures that the actual resistance value remains within 118.8 to 121.2 Ohms across the operating temperature range. Both substitute parts maintain this specification.