RCS2012J510CS Equivalent & Substitute Parts

Part Overview

The RCS2012J510CS is a 51 Ohm ±5% 0.125W (1/8W) thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is supplied in Tape & Reel (TR) packaging with anti-sulfur and moisture-resistant characteristics. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size, termination count), and environmental operating parameters.

Key Parameters

Parameter	Value
Resistance	51 Ohms
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 ~ 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RCS2012J510CS are grouped based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Core Matching Parameters:

Resistance value: 51 Ohms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Power rating: 0.125W (1/8W) (exact match required for direct substitution)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
Number of Terminations: 2 (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Consideration:

Tolerance: ±5% (main part specification); substitute parts with ±1% tolerance are acceptable as tighter tolerance represents improved performance within the same application space

Substitute parts are identified from manufacturers including Samsung Electro-Mechanics, YAGEO, Vishay Dale, Panasonic Electronic Components, and Rohm Semiconductor. Parts with identical electrical and mechanical specifications but different packaging formats (Cut Tape vs. Tape & Reel) or enhanced features (Automotive AEC-Q200 certification, High Voltage capability) are included as valid substitutes.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff	Op Temp Range	Features	RoHS	MSL
RCS2012J510CS	Samsung Electro-Mechanics	51Ω	±5%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Anti-Sulfur, Moisture Resistant	ROHS3	1
RC2012J510CS	Samsung Electro-Mechanics	51Ω	±5%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
AC0805FR-0751RL	YAGEO	51Ω	±1%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
AC0805JR-0751RL	YAGEO	51Ω	±5%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
CRCW080551R0FKEA	Vishay Dale	51Ω	±1%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
ERJ-6ENF51R0V	Panasonic Electronic Components	51Ω	±1%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
KTR10EZPF51R0	Rohm Semiconductor	51Ω	±1%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Automotive AEC-Q200, High Voltage	ROHS3	1
RC0805FR-0751RL	YAGEO	51Ω	±1%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
RC0805JR-0751RL	YAGEO	51Ω	±5%	0.125	0805	Thick Film	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications):

RC2012J510CS (Samsung Electro-Mechanics) and AC0805JR-0751RL (YAGEO) are direct functional equivalents to RCS2012J510CS. Both maintain 51 Ohm resistance, ±5% tolerance, 0.125W power rating, 0805 package, and identical operating temperature range. RC2012J510CS differs only in packaging format (Cut Tape vs. Tape & Reel) and lacks anti-sulfur feature. AC0805JR-0751RL includes Automotive AEC-Q200 certification and differs in packaging format.

Enhanced Tolerance Substitutes (±1% Tolerance):

CRCW080551R0FKEA (Vishay Dale), ERJ-6ENF51R0V (Panasonic Electronic Components), KTR10EZPF51R0 (Rohm Semiconductor), RC0805FR-0751RL (YAGEO), and AC0805FR-0751RL (YAGEO) provide tighter tolerance specification (±1%) while maintaining all other core parameters. These parts are suitable for applications requiring improved tolerance performance. CRCW080551R0FKEA, ERJ-6ENF51R0V, KTR10EZPF51R0, and AC0805FR-0751RL include Automotive AEC-Q200 certification. KTR10EZPF51R0 includes High Voltage capability.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and identical operating temperature range (-55°C ~ 155°C). Automotive AEC-Q200 certified options (AC0805FR-0751RL, AC0805JR-0751RL, CRCW080551R0FKEA, ERJ-6ENF51R0V, KTR10EZPF51R0) are available for applications requiring automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can I substitute RCS2012J510CS with a part having ±1% tolerance instead of ±5%?

A: Yes. Parts with ±1% tolerance (CRCW080551R0FKEA, ERJ-6ENF51R0V, KTR10EZPF51R0, RC0805FR-0751RL, AC0805FR-0751RL) are functionally compatible. Tighter tolerance represents improved accuracy and is acceptable in applications originally specified for ±5% tolerance.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging is supplied on continuous reels suitable for automated assembly equipment. Cut Tape packaging is supplied in individual tape segments. Both formats contain identical components; packaging format selection depends on assembly process requirements and inventory management.

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

A: Yes. Automotive AEC-Q200 certification indicates enhanced reliability testing and quality standards. These parts (AC0805FR-0751RL, AC0805JR-0751RL, CRCW080551R0FKEA, ERJ-6ENF51R0V, KTR10EZPF51R0) are fully compatible with non-automotive applications and provide equivalent or superior performance.

Q: What does the 0805 (2012 Metric) package designation mean?

A: 0805 is the imperial designation (0.080" × 0.050"); 2012 Metric is the metric equivalent (2.00mm × 1.25mm). Both designations refer to identical physical dimensions and are interchangeable terms for the same package size.

Q: Can I use CRCW080551R0FKEAHP or RCS080551R0FKEA as substitutes?

A: No. CRCW080551R0FKEAHP and RCS080551R0FKEA have 0.5W (1/2W) power rating, which differs from the RCS2012J510CS specification of 0.125W (1/8W). These parts are not direct substitutes due to power rating mismatch.

Q: What is the significance of anti-sulfur and moisture-resistant features?

A: Anti-sulfur and moisture-resistant features enhance component longevity in harsh environmental conditions. RC2012J510CS includes anti-sulfur protection; most substitute parts include moisture-resistant protection. Feature differences do not prevent substitution but indicate varying environmental protection levels.

Q: Are all substitute parts in active product status?

A: Yes. All listed substitute parts maintain Active product status, indicating current manufacturing availability and ongoing supplier support.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message