RC2012J242CS Equivalent & Substitute Parts

Part Overview

The RC2012J242CS is a 2.4 kOhm ±5% thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is rated for 0.125W (1/8W) power dissipation with moisture-resistant construction and operates across -55°C to 155°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand enhanced specifications such as tighter tolerance or automotive qualification, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Key Parameters

Parameter	Value
Resistance	2.4 kOhms
Tolerance	±5%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012J242CS is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

Resistance value: 2.4 kOhms
Package / Case: 0805 (2012 Metric)
Power rating: 0.125W (1/8W)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

Tolerance Consideration: Parts are grouped into two categories based on tolerance specification. Direct equivalents maintain ±5% tolerance matching the original specification. Upgrade substitutes feature ±1% tolerance, providing enhanced precision while maintaining all other electrical and mechanical parameters.

Packaging Format: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel. Both formats are mechanically and electrically equivalent; selection depends on procurement and assembly requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max	Packaging	Product Status
RC2012J242CS	Samsung Electro-Mechanics	2.4 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65mm	Tape & Reel	Active
RC0805JR-072K4L	YAGEO	2.4 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	Tape & Reel	Active
AC0805FR-072K4L	YAGEO	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	Tape & Reel	Active
CR0805-FX-2401ELF	Bourns Inc.	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	Cut Tape & Digi-Reel	Active
ERJ-6ENF2401V	Panasonic Electronic Components	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.70mm	Cut Tape & Digi-Reel	Active
KTR10EZPF2401	Rohm Semiconductor	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65mm	Tape & Reel	Active
MCR10ERTF2401	Rohm Semiconductor	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65mm	Cut Tape & Digi-Reel	Discontinued
RC0805FR-072K4L	YAGEO	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	Cut Tape & Digi-Reel	Active
RMCF0805FT2K40	Stackpole Electronics Inc	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65mm	Tape & Reel	Active
AC0805JR-072K4L	YAGEO	2.4 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	Tape & Reel	Active
CRCW08052K40FKEA	Vishay Dale	2.4 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.50mm	Cut Tape & Digi-Reel	Active

Engineering Selection Recommendations

Direct Equivalent (±5% Tolerance): RC0805JR-072K4L from YAGEO is the primary direct equivalent, maintaining identical tolerance specification while offering active product status and high inventory availability. This part is suitable for applications where the original ±5% tolerance specification is required.

Upgrade Substitutes (±1% Tolerance): The following parts provide enhanced tolerance specification while maintaining all core electrical and mechanical parameters:

RC0805FR-072K4L (YAGEO): Active status with highest inventory availability (5,000,300 pcs). Recommended for high-volume applications requiring precision tolerance.
AC0805FR-072K4L (YAGEO): Active status with AEC-Q200 automotive qualification. Suitable for automotive and mission-critical applications.
RMCF0805FT2K40 (Stackpole Electronics Inc): Active status with AEC-Q200 automotive qualification. Recommended for automotive applications.
CR0805-FX-2401ELF (Bourns Inc.): Active status. Suitable for general industrial applications.
CRCW08052K40FKEA (Vishay Dale): Active status with AEC-Q200 automotive qualification and lowest seated height (0.50mm). Recommended for space-constrained PCB layouts.
ERJ-6ENF2401V (Panasonic Electronic Components): Active status with AEC-Q200 automotive qualification. Note: Highest seated height (0.70mm) among active substitutes.
KTR10EZPF2401 (Rohm Semiconductor): Active status with AEC-Q200 automotive qualification and high-voltage features.

Discontinued Part: MCR10ERTF2401 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs.

Automotive Applications: For designs requiring automotive qualification, select from parts carrying AEC-Q200 rating: AC0805FR-072K4L, ERJ-6ENF2401V, KTR10EZPF2401, RMCF0805FT2K40, or CRCW08052K40FKEA.

PCB Layout Considerations: Seated height varies across substitutes (0.50mm to 0.70mm). For space-constrained designs, CRCW08052K40FKEA offers minimum height. For standard applications, height variation is not a limiting factor.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-072K4L replace RC2012J242CS directly? A: Yes. RC0805JR-072K4L is a direct equivalent, matching all core parameters including 2.4 kOhm resistance, ±5% tolerance, 0.125W power rating, 0805 package, and operating temperature range -55°C to 155°C.

Q: What is the difference between direct equivalents and upgrade substitutes? A: Direct equivalents maintain ±5% tolerance matching the original specification. Upgrade substitutes feature ±1% tolerance, providing enhanced precision. All other electrical and mechanical parameters remain identical. Upgrade substitutes are suitable for applications where tighter tolerance improves circuit performance.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original RC2012J242CS specification.

Q: Which substitute should I select for automotive applications? A: For automotive designs, select parts with AEC-Q200 qualification: AC0805FR-072K4L, ERJ-6ENF2401V, KTR10EZPF2401, RMCF0805FT2K40, or CRCW08052K40FKEA. All maintain identical electrical specifications while meeting automotive industry standards.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance? A: No. Packaging format affects procurement and assembly logistics only. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats are electrically and mechanically equivalent. Selection depends on assembly equipment compatibility and supply chain requirements.

Q: Can I use MCR10ERTF2401 as a substitute? A: MCR10ERTF2401 is discontinued at DiGi Electronics and should not be selected for new designs. Active alternatives with identical specifications are available.

Q: What is the significance of seated height variation among substitutes? A: Seated height ranges from 0.50mm (CRCW08052K40FKEA) to 0.70mm (ERJ-6ENF2401V). For standard PCB designs with typical component spacing, this variation is not a limiting factor. For space-constrained layouts, select parts with lower seated height specifications.

Q: Are all substitute parts in active production status? A: All recommended substitutes except MCR10ERTF2401 maintain active product status. MCR10ERTF2401 is discontinued and should be avoided for new designs.

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