RC1005F1241CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F1241CS is a 1.24 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device 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 is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Substiute Parts

RC1005F1241CS

Samsung Electro-MechanicsIn Stock: 1039RC1005F1241CS Datasheet

Current PartRFQ

CR0402-FX-1241GLF

Bourns Inc.In Stock: 10367CR0402-FX-1241GLF Datasheet

DirectRFQ

RC0402FR-071K24L

YAGEOIn Stock: 711524RC0402FR-071K24L Datasheet

DirectRFQ

ERJ-2RKF1241X

Panasonic Electronic ComponentsIn Stock: 49558ERJ-2RKF1241X Datasheet

UpgradeRFQ

AC0402FR-071K24L

YAGEOIn Stock: 69447AC0402FR-071K24L Datasheet

SimilarRFQ

CRCW04021K24FKED

Vishay DaleIn Stock: 164270CRCW04021K24FKED Datasheet

SimilarRFQ

RMCF0402FT1K24

Stackpole Electronics IncIn Stock: 37436RMCF0402FT1K24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F1241CS is determined by strict equivalence across the following critical parameters: resistance value (1.24 kOhms), tolerance (±1%), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and regulatory compliance (ROHS3, REACH Unaffected).

Substitute parts are categorized into three groups:

Direct Equivalents maintain all electrical and mechanical specifications identical to the main part, including power rating (0.063W / 1/16W) and packaging format (Cut Tape or Tape & Reel).

Upgrade Substitutes provide enhanced performance through increased power rating (0.1W / 1/10W) or automotive qualification (AEC-Q200) while maintaining all other core parameters, enabling use in more demanding applications.

Similar Substitutes include automotive-qualified variants (AEC-Q200) or alternative packaging configurations that preserve electrical performance and mechanical compatibility within the 0402 package envelope.

All identified substitutes maintain the same two-terminal configuration, dimensional envelope, and regulatory certifications required for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: CR0402-FX-1241GLF (Bourns Inc.) and RC0402FR-071K24L (YAGEO) are direct electrical and mechanical equivalents to the RC1005F1241CS. Both maintain identical resistance, tolerance, power rating, and temperature specifications. Selection between these options is based on packaging preference (Tape & Reel format) and supply chain availability. RC0402FR-071K24L includes moisture resistant construction matching the original specification.

Upgrade Path: ERJ-2RKF1241X (Panasonic Electronic Components) provides enhanced power rating (0.1W versus 0.063W) with automotive AEC-Q200 qualification. This upgrade is suitable for applications requiring higher thermal margin or automotive-grade reliability without changing board layout or footprint.

Automotive-Qualified Alternatives: AC0402FR-071K24L (YAGEO), CRCW04021K24FKED (Vishay Dale), and RMCF0402FT1K24 (Stackpole Electronics Inc) are automotive AEC-Q200 qualified variants maintaining the 0.063W power rating. These parts are appropriate for automotive applications, industrial environments, or designs requiring enhanced qualification documentation. AC0402FR-071K24L additionally includes moisture resistant construction.

All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (unlimited) moisture sensitivity level, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-1241GLF replace RC1005F1241CS directly on the PCB?

A: Yes. CR0402-FX-1241GLF is a direct electrical and mechanical equivalent. Both parts share identical resistance (1.24 kOhms), tolerance (±1%), power rating (0.063W), package format (0402), and operating temperature range (-55°C to 155°C). The primary difference is packaging format (Tape & Reel versus Cut Tape) and the absence of explicit moisture resistant designation in the Bourns part, though both maintain MSL 1 rating.

Q: What is the difference between the main part and ERJ-2RKF1241X?

A: ERJ-2RKF1241X provides an upgrade path with increased power rating (0.1W / 1/10W versus 0.063W / 1/16W) and automotive AEC-Q200 qualification. All other electrical parameters remain identical. This upgrade is suitable for applications requiring higher power dissipation capability or automotive-grade reliability without PCB redesign.

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

A: Yes. Automotive AEC-Q200 qualified parts (AC0402FR-071K24L, CRCW04021K24FKED, RMCF0402FT1K24, ERJ-2RKF1241X) meet or exceed commercial-grade specifications and are fully compatible with non-automotive applications. The qualification indicates enhanced reliability and stricter manufacturing controls, making these parts suitable for any application requiring the specified electrical characteristics.

Q: Does packaging format (Cut Tape versus Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical and mechanical specifications remain identical regardless of whether parts are supplied in Cut Tape or Tape & Reel format. Selection is based on manufacturing equipment compatibility and supply chain requirements.

Q: Can I use RC0402FR-071K24L as a direct replacement for RC1005F1241CS?

A: Yes. RC0402FR-071K24L is a direct equivalent manufactured by YAGEO. It maintains identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. Both parts include moisture resistant construction. The primary difference is packaging format (Tape & Reel versus Cut Tape).

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

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without special moisture control measures. Both the main part and all substitute parts carry MSL 1 rating, ensuring equivalent handling and storage requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the RC1005F1241CS. This ensures compatibility with environmental and regulatory standards across all applications.