Equivalent & Substitute Parts for RC2012J681CS

Part Overview

The RC2012J681CS is a 680 Ohms ±5% 0.125W (1/8W) chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently in active production status with 1046 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as enhanced tolerance or automotive qualification.

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	680 Ohms	Critical - Must Match
Tolerance	±5%	Critical - Defines Accuracy Class
Power Rating	0.125W (1/8W)	Critical - Must Match or Exceed
Package / Case	0805 (2012 Metric)	Critical - PCB Layout Dependent
Composition	Thick Film	Critical - Electrical Characteristics
Temperature Coefficient	±100ppm/°C	Important - Thermal Stability
Operating Temperature Range	-55°C to 155°C	Important - Application Environment
Moisture Resistance	Yes	Important - Environmental Protection
RoHS Compliance	ROHS3	Important - Regulatory Requirement
MSL Rating	1 (Unlimited)	Important - Storage & Handling

Substitute Part Grouping Explanation

Substitute parts are categorized into three groups based on electrical and mechanical compatibility with the RC2012J681CS:

Direct Equivalents (Same Tolerance ±5%): Parts maintaining identical 680 Ohms ±5% tolerance specification. These provide one-to-one functional replacement without circuit performance impact.

Upgrade Substitutes (Enhanced Tolerance ±1%): Parts with tighter ±1% tolerance while maintaining all other critical parameters (680 Ohms, 0.125W, 0805 package, thick film, -55°C to 155°C). These offer improved accuracy and are electrically compatible in applications where the original ±5% tolerance is acceptable but tighter tolerance is available.

Similar Parts (Same Tolerance ±5%, Different Features): Parts matching 680 Ohms ±5% tolerance and 0805 package but with additional certifications (automotive AEC-Q200) or different packaging formats. These are suitable for applications requiring specific compliance or supply chain alternatives.

Substitution logic is strictly based on: resistance value match, tolerance compatibility, power rating sufficiency, identical 0805 package, thick film composition, temperature coefficient alignment, operating temperature range coverage, and regulatory compliance (ROHS3, MSL 1).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Moisture Resistant	RoHS	MSL	Packaging Type	Inventory
RC2012J681CS	Samsung Electro-Mechanics	680Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel	1046
RC0805JR-07680RL	YAGEO	680Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel	71238
AC0805FR-07680RL	YAGEO	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel	68168
CR0805-FX-6800ELF	Bourns Inc.	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel	42835
CRG0805F680R	TE Connectivity Passive Product	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Tape & Reel	14120
ERJ-6ENF6800V	Panasonic Electronic Components	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Cut Tape & Digi-Reel	182406
KTR10EZPF6800	Rohm Semiconductor	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Tape & Reel	787
RC0805FR-07680RL	YAGEO	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel	500200
RMCF0805FT680R	Stackpole Electronics Inc	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Tape & Reel	342887
AC0805JR-07680RL	YAGEO	680Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel	40515
CRCW0805680RFKEA	Vishay Dale	680Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Cut Tape & Digi-Reel	20300

Engineering Selection Recommendations

For Direct Replacement (No Circuit Redesign): RC0805JR-07680RL (YAGEO) is the primary direct equivalent, offering identical electrical specifications with ±5% tolerance, moisture resistance, and ROHS3 compliance. High inventory availability (71,238 units) supports immediate procurement.

For Tolerance-Critical Applications: RC0805FR-07680RL (YAGEO) provides ±1% tolerance upgrade while maintaining moisture resistance and identical thermal characteristics. Largest inventory (500,200 units) ensures supply continuity. Suitable when circuit design permits tighter tolerance without requiring component redesign.

For Automotive Applications (AEC-Q200 Requirement): AC0805FR-07680RL (YAGEO) or RMCF0805FT680R (Stackpole Electronics) meet automotive qualification standards with ±1% tolerance. Both maintain -55°C to 155°C operating range and ROHS3 compliance. RMCF0805FT680R offers higher inventory (342,887 units).

For High-Volume, Cost-Optimized Procurement: ERJ-6ENF6800V (Panasonic) provides largest inventory (182,406 units) with ±1% tolerance and AEC-Q200 automotive qualification, supporting volume discounts and extended supply security.

For Packaging Format Flexibility: All listed substitutes maintain 0805 package compatibility. Packaging format options include Tape & Reel (TR) and Cut Tape with Digi-Reel (CT). Selection depends on assembly equipment and handling requirements.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original RC2012J681CS specification.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-07680RL replace RC2012J681CS directly without circuit modification?

A: Yes. RC0805JR-07680RL is a direct equivalent with identical 680 Ohms ±5% tolerance, 0.125W power rating, 0805 package, thick film composition, and operating temperature range (-55°C to 155°C). Both parts are ROHS3 compliant with MSL 1 rating. No circuit redesign is required.

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

A: Tolerance defines the acceptable resistance variation from the nominal 680 Ohm value. ±5% tolerance allows 646-714 Ohms; ±1% tolerance allows 673-687 Ohms. ±1% parts provide tighter accuracy suitable for precision circuits. Both are electrically compatible in applications where the original ±5% specification is acceptable.

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

A: Yes. AEC-Q200 qualified parts (AC0805FR-07680RL, ERJ-6ENF6800V, RMCF0805FT680R, CRCW0805680RFKEA) meet automotive reliability standards and are fully compatible with general industrial and consumer applications. They offer enhanced quality assurance without application restrictions.

Q: Does packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly process compatibility. Tape & Reel (TR) and Cut Tape with Digi-Reel (CT) formats contain identical components. Selection depends on assembly equipment capability and procurement workflow.

Q: Why do some substitutes lack moisture resistance specification?

A: CRG0805F680R, ERJ-6ENF6800V, KTR10EZPF6800, and RMCF0805FT680R do not explicitly list moisture resistance in provided specifications. RC2012J681CS and RC0805JR-07680RL explicitly specify moisture resistance. For applications requiring confirmed moisture protection, select parts with explicit moisture resistance designation.

Q: Can I use KTR10EZPF6800 despite lower inventory (787 units)?

A: KTR10EZPF6800 is electrically compatible with ±1% tolerance and AEC-Q200 automotive qualification. However, limited inventory may impact procurement timeline and volume availability. Evaluate supply chain requirements before selection.

Q: What is MSL 1 rating and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts carry MSL 1 rating, ensuring no special storage or handling procedures are necessary. Components can be stored at standard conditions indefinitely.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original RC2012J681CS specification. This ensures regulatory compatibility for applications subject to RoHS directives.

Q: Which substitute offers the best supply security for high-volume production?

A: RC0805FR-07680RL (YAGEO) with 500,200 units in stock provides maximum supply security. ERJ-6ENF6800V (Panasonic) with 182,406 units and RMCF0805FT680R (Stackpole) with 342,887 units are secondary options for volume production planning.

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