RC1005F4120CS Equivalent & Substitute Parts

Part Overview

The RC1005F4120CS is a 412 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component is rated at 0.063W (1/16W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity rating).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size, dimensions, termination count), and environmental operating parameters. Substitute components enable design flexibility, supply chain alternatives, and application-specific feature selection while maintaining functional equivalence.

Substiute Parts

RC1005F4120CS

Samsung Electro-MechanicsIn Stock: 1046RC1005F4120CS Datasheet

Current PartRFQ

CR0402-FX-4120GLF

Bourns Inc.In Stock: 47660CR0402-FX-4120GLF Datasheet

DirectRFQ

RC0402FR-07412RL

YAGEOIn Stock: 7737RC0402FR-07412RL Datasheet

DirectRFQ

ERJ-2RKF4120X

Panasonic Electronic ComponentsIn Stock: 163756ERJ-2RKF4120X Datasheet

UpgradeRFQ

CRCW0402412RFKED

Vishay DaleIn Stock: 27274CRCW0402412RFKED Datasheet

SimilarRFQ

RMCF0402FT412R

Stackpole Electronics IncIn Stock: 63932RMCF0402FT412R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters:

Mandatory Matching Parameters:

• Resistance Value: 412 Ohms
• Tolerance: ±1%
• Package / Case: 0402 (1005 Metric)
• Physical Dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)
• Number of Terminations: 2
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)

Allowable Variation Parameters:

• Power Rating: Substitutes may equal or exceed the 0.063W (1/16W) specification
• Features: Additional certifications (Automotive AEC-Q200, Moisture Resistant) do not disqualify substitution

All identified substitute parts meet or exceed the mandatory electrical and mechanical specifications of the RC1005F4120CS. Variations in power rating or additional feature certifications represent functional enhancements or application-specific qualifications that maintain backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical compatibility with the RC1005F4120CS. Selection among equivalent options is based on the following engineering criteria:

Direct Equivalents (Identical Specifications):

• CR0402-FX-4120GLF (Bourns Inc.): Matches all core parameters. Suitable for general-purpose applications requiring standard thick film resistor performance.
• RC0402FR-07412RL (YAGEO): Matches all core parameters with moisture-resistant construction identical to the main part. Appropriate for applications with environmental moisture exposure requirements.

Enhanced Power Rating:

• ERJ-2RKF4120X (Panasonic Electronic Components): Provides 0.1W (1/10W) power rating, exceeding the 0.063W specification. Includes Automotive AEC-Q200 qualification. Suitable for applications requiring higher power dissipation capability or automotive-grade reliability.

Automotive-Qualified Alternatives:

• CRCW0402412RFKED (Vishay Dale): Maintains 0.063W power rating with Automotive AEC-Q200 certification. Appropriate for automotive and mission-critical applications requiring AEC-Q200 compliance.
• RMCF0402FT412R (Stackpole Electronics Inc): Maintains 0.063W power rating with Automotive AEC-Q200 certification. Appropriate for automotive and mission-critical applications requiring AEC-Q200 compliance.

All substitute parts are Active products with ROHS3 compliance and MSL Level 1 rating, ensuring regulatory alignment and environmental stability equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can ERJ-2RKF4120X be used as a direct replacement for RC1005F4120CS?

A: Yes. The ERJ-2RKF4120X meets all mandatory electrical and mechanical specifications. The 0.1W power rating exceeds the 0.063W requirement, providing enhanced thermal capability. This represents a functional upgrade suitable for applications where higher power dissipation is beneficial or required.

Q: What is the difference between moisture-resistant and standard thick film resistors in this comparison?

A: RC1005F4120CS and RC0402FR-07412RL both feature moisture-resistant construction. CR0402-FX-4120GLF does not list moisture-resistant features. For applications exposed to humidity or condensation, moisture-resistant variants provide enhanced reliability. All parts maintain MSL Level 1 (Unlimited) rating.

Q: Are automotive-qualified parts (AEC-Q200) backward compatible with non-automotive applications?

A: Yes. Automotive AEC-Q200 qualification represents additional testing and quality assurance beyond standard specifications. Parts meeting AEC-Q200 (ERJ-2RKF4120X, CRCW0402412RFKED, RMCF0402FT412R) are suitable for any application requiring the base electrical and mechanical specifications, including non-automotive designs.

Q: Can these substitutes be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts share identical package dimensions (0402 / 1005 Metric), footprint, and termination configuration (2 terminations). PCB layout and reflow soldering parameters remain unchanged. No design modifications are required for mechanical or electrical integration.

Q: What inventory considerations apply when selecting among these substitutes?

A: Inventory availability varies by manufacturer. RC1005F4120CS (Samsung): 941 Pcs. CR0402-FX-4120GLF (Bourns): 47,570 Pcs. RC0402FR-07412RL (YAGEO): 7,702 Pcs. ERJ-2RKF4120X (Panasonic): 163,648 Pcs. CRCW0402412RFKED (Vishay Dale): 27,252 Pcs. RMCF0402FT412R (Stackpole): 63,868 Pcs. Selection may be influenced by supply chain requirements and lead time considerations.

Q: Do all parts share the same temperature coefficient specification?

A: Yes. All parts listed maintain ±100ppm/°C temperature coefficient and operate across -55°C to 155°C. Temperature stability and thermal performance are equivalent across all substitutes.