Equivalent & Substitute Parts for RC1005F122CS

Part Overview

The RC1005F122CS is a 1.2 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package. This component is rated for 0.063W (1/16W) power dissipation with moisture-resistant properties and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when alternative manufacturers offer components with matching or superior electrical and mechanical specifications within the same package footprint. Substitution becomes necessary due to supply chain availability, lead time requirements, or design flexibility across multiple qualified suppliers.

Substiute Parts

RC1005F122CS

Samsung Electro-MechanicsIn Stock: 20423RC1005F122CS Datasheet

Current PartRFQ

CR0402-FX-1201GLF

Bourns Inc.In Stock: 3972CR0402-FX-1201GLF Datasheet

DirectRFQ

RC0402FR-071K2L

YAGEOIn Stock: 3458RC0402FR-071K2L Datasheet

DirectRFQ

ERJ-2RKF1201X

Panasonic Electronic ComponentsIn Stock: 350702ERJ-2RKF1201X Datasheet

UpgradeRFQ

AC0402FR-071K2L

YAGEOIn Stock: 25446AC0402FR-071K2L Datasheet

SimilarRFQ

AF0402FR-071K2L

YAGEOIn Stock: 20874AF0402FR-071K2L Datasheet

SimilarRFQ

CRCW04021K20FKED

Vishay DaleIn Stock: 105361CRCW04021K20FKED Datasheet

SimilarRFQ

RMCF0402FT1K20

Stackpole Electronics IncIn Stock: 7249RMCF0402FT1K20 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F122CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.2 kOhms
• Tolerance: ±1%
• Package / Case: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant
• Number of Terminations: 2

Allowable Variation:

• Power Rating: Substitute parts may equal or exceed 0.063W (1/16W)
• Physical Height: Seated height may vary within component tolerance
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable in manufacturing
• Additional Features: Automotive AEC-Q200 certification, anti-sulfur properties, and moisture resistance are permissible enhancements that do not disqualify substitution

All substitute parts listed maintain Active product status and full compliance with REACH and ECCN regulations.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications):

CR0402-FX-1201GLF (Bourns Inc.), RC0402FR-071K2L (YAGEO), AC0402FR-071K2L (YAGEO), AF0402FR-071K2L (YAGEO), CRCW04021K20FKED (Vishay Dale), and RMCF0402FT1K20 (Stackpole Electronics Inc) are functionally equivalent to the RC1005F122CS. All maintain identical resistance, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature specifications. All parts are ROHS3 compliant with MSL 1 rating.

Upgrade Option (Enhanced Power Rating):

ERJ-2RKF1201X (Panasonic Electronic Components) provides a higher power rating of 0.1W (1/10W) compared to the 0.063W specification of the primary part. This component is suitable for applications requiring additional thermal margin or higher power dissipation capacity while maintaining all other electrical and mechanical parameters. The ERJ-2RKF1201X carries Automotive AEC-Q200 certification.

Automotive-Qualified Alternatives:

AC0402FR-071K2L, AF0402FR-071K2L, CRCW04021K20FKED, ERJ-2RKF1201X, and RMCF0402FT1K20 include Automotive AEC-Q200 certification. These parts are suitable for applications requiring automotive-grade reliability and qualification. AF0402FR-071K2L additionally includes anti-sulfur properties for enhanced environmental resistance.

Packaging Considerations:

Tape & Reel (TR) format parts: RC1005F122CS, CR0402-FX-1201GLF, AC0402FR-071K2L, AF0402FR-071K2L, RMCF0402FT1K20

Cut Tape (CT) & Digi-Reel format parts: RC0402FR-071K2L, ERJ-2RKF1201X, CRCW04021K20FKED

Selection between packaging formats depends on manufacturing process requirements and equipment compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-2RKF1201X be used as a direct replacement for RC1005F122CS?

A: Yes. ERJ-2RKF1201X is electrically and mechanically compatible. The higher power rating (0.1W versus 0.063W) does not prevent substitution; it provides additional thermal capability. The component occupies the same 0402 package footprint with identical resistance, tolerance, temperature coefficient, and operating temperature range.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape suitable for automated pick-and-place equipment with reel handling. Cut Tape (CT) & Digi-Reel format provides components on tape segments or alternative reel formats. Both formats contain identical components; selection depends on manufacturing equipment and process requirements.

Q: Are automotive-qualified parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 qualified parts meet or exceed commercial-grade specifications. These components are suitable for any application where the RC1005F122CS is specified. Automotive qualification indicates enhanced reliability testing and stricter manufacturing controls.

Q: Does moisture resistance affect substitution eligibility?

A: Moisture resistance is an additional feature that does not disqualify substitution. Parts with moisture-resistant properties (RC1005F122CS, RC0402FR-071K2L, AC0402FR-071K2L, AF0402FR-071K2L) are directly equivalent to parts without this specification. Selection depends on application environmental requirements.

Q: What does MSL 1 (Unlimited) moisture sensitivity mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitute parts carry MSL 1 rating, eliminating moisture-related handling constraints.

Q: Can I substitute based on manufacturer preference alone?

A: No. Substitution must be based on matching electrical specifications (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package, footprint, termination count). All listed parts meet these criteria. Manufacturer selection may then be based on availability, lead time, or supply chain strategy.

Q: What does ROHS3 compliance indicate?

A: ROHS3 compliance certifies the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed parts are ROHS3 compliant, ensuring regulatory compliance for EU and equivalent markets.

Q: Are there any height differences between substitute parts?

A: Seated height specifications are 0.016" (0.40mm) for most parts, with AC0402FR-071K2L and AF0402FR-071K2L specified at 0.015" (0.37mm). These variations fall within standard component tolerance and do not affect PCB assembly compatibility or electrical performance.