RC1005J244CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005J244CS is a 240 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated for 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 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified to address component availability, supply chain continuity, and application-specific performance requirements while maintaining electrical and mechanical compatibility within the 0402 package specification.

Key Parameters

Parameter	Value
Resistance	240 kOhms
Tolerance	±5%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Resistance	Yes
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the RC1005J244CS is determined by the following mandatory parameters:

Electrical Parameters:

Resistance value: 240 kOhms (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (minimum requirement)

Mechanical Parameters:

Package / Case: 0402 (1005 Metric) (exact match required)
Number of terminations: 2 (exact match required)
Physical dimensions: 0.039" L x 0.020" W, Height 0.016" max (exact match required)

Environmental & Compliance Parameters:

RoHS Status: ROHS3 Compliant (minimum requirement)
MSL Rating: 1 (Unlimited) (minimum requirement)
Composition: Thick Film (exact match required)

Substitute parts are categorized as follows:

Direct Equivalents: Parts with identical resistance, tolerance (±5%), power rating (0.063W), and all mechanical specifications. These provide one-to-one replacement capability.

Upgrade Substitutes: Parts with identical resistance, package, and mechanical specifications but improved tolerance (±1%) or enhanced power rating (0.1W). These offer superior performance characteristics while maintaining full compatibility.

Similar Substitutes: Parts with identical resistance, tolerance, power rating, and package but alternative manufacturer specifications or automotive-grade certifications (AEC-Q200).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	RoHS	MSL
RC1005J244CS	Samsung Electro-Mechanics	240 kΩ	±5%	0.063	0402	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
RC0402JR-07240KL	YAGEO	240 kΩ	±5%	0.063	0402	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
ERJ-2RKF2403X	Panasonic Electronic Components	240 kΩ	±1%	0.1	0402	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
RC0402FR-07240KL	YAGEO	240 kΩ	±1%	0.063	0402	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
RMCF0402FT240K	Stackpole Electronics Inc	240 kΩ	±1%	0.063	0402	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
RMCF0402JT240K	Stackpole Electronics Inc	240 kΩ	±5%	0.063	0402	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1

Engineering Selection Recommendations

Direct Equivalent Selection:

RC0402JR-07240KL (YAGEO) provides direct electrical and mechanical equivalence to RC1005J244CS. Both parts share identical resistance (240 kOhms), tolerance (±5%), power rating (0.063W), package specification (0402), and environmental compliance (ROHS3, MSL 1). This part is suitable for direct substitution in applications where the original specification is maintained.

RMCF0402JT240K (Stackpole Electronics Inc) offers equivalent electrical performance with identical resistance, tolerance, and power rating in the same 0402 package. This part includes automotive-grade AEC-Q200 certification, providing enhanced reliability qualification for automotive and industrial applications while maintaining full compatibility with the original specification.

Upgrade Substitute Selection:

RC0402FR-07240KL (YAGEO) provides improved tolerance (±1%) compared to the original ±5% specification while maintaining identical power rating (0.063W) and package format (0402). This upgrade is applicable in circuits requiring tighter resistance tolerance without increasing power dissipation requirements.

RMCF0402FT240K (Stackpole Electronics Inc) combines improved tolerance (±1%) with automotive-grade AEC-Q200 certification in the same 0402 package and power rating (0.063W). This part is suitable for applications requiring both enhanced tolerance performance and automotive-qualified component status.

ERJ-2RKF2403X (Panasonic Electronic Components) provides enhanced power rating (0.1W versus 0.063W) with improved tolerance (±1%) in the 0402 package. This upgrade is applicable in circuits where increased thermal headroom or improved tolerance is beneficial, with automotive AEC-Q200 qualification.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and the required operating temperature range (-55°C ~ 155°C) with ±100ppm/°C temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can RC0402JR-07240KL replace RC1005J244CS directly?

A: Yes. RC0402JR-07240KL is a direct equivalent with identical electrical specifications (240 kOhms ±5%, 0.063W), package format (0402), and environmental ratings (ROHS3, MSL 1). No circuit modifications are required.

Q: What is the difference between the ±5% and ±1% tolerance versions?

A: Tolerance specifies the maximum deviation from the nominal 240 kOhms resistance value. ±5% tolerance allows deviation up to ±12 kOhms, while ±1% tolerance limits deviation to ±2.4 kOhms. Applications requiring precise resistance values benefit from ±1% parts (RC0402FR-07240KL, RMCF0402FT240K, ERJ-2RKF2403X).

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

A: Yes. Automotive-qualified parts (ERJ-2RKF2403X, RMCF0402FT240K, RMCF0402JT240K) meet or exceed standard industrial specifications and are fully compatible with non-automotive applications. AEC-Q200 certification indicates enhanced reliability qualification and is not restrictive to automotive use.

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 moisture bake-out requirements prior to soldering. All listed parts share this specification.

Q: Can I use ERJ-2RKF2403X (0.1W) in place of RC1005J244CS (0.063W)?

A: Yes. ERJ-2RKF2403X has higher power rating (0.1W) and improved tolerance (±1%), making it suitable for applications originally designed for RC1005J244CS. The higher power rating provides additional thermal margin without affecting circuit operation.

Q: Are all substitute parts available in the same packaging options?

A: Packaging availability varies by manufacturer. RC1005J244CS is supplied in Cut Tape (CT). RC0402JR-07240KL, ERJ-2RKF2403X, RMCF0402FT240K, and RMCF0402JT240K are supplied in Tape & Reel (TR). RC0402FR-07240KL is available in Cut Tape (CT) & Digi-Reel®. Verify packaging requirements with your procurement specifications.

Q: Do all parts meet ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting the same environmental and hazardous substance restrictions as the original RC1005J244CS.

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