Equivalent & Substitute Parts for RC1005J681CS

Part Overview

The RC1005J681CS is a 680 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component is rated at 1/16W (0.063W) 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 carries ROHS3 compliance with MSL Level 1 rating.

Equivalent and substitute parts are identified when design requirements, supply chain constraints, or application-specific certifications necessitate component alternatives while maintaining electrical and mechanical compatibility within the 0402 package footprint.

Key Parameters

Parameter	Value	Specification Basis
Resistance	680 Ohms	Core electrical specification
Tolerance	±5% (standard); ±1% (upgrade)	Determines substitution compatibility
Power Rating	0.063W / 1/16W (standard); 0.1W / 1/10W (higher rating)	Thermal performance requirement
Package / Case	0402 (1005 Metric)	Physical footprint constraint
Composition	Thick Film	Technology type
Temperature Coefficient	±100ppm/°C	Stability specification
Operating Temperature Range	-55°C to 155°C	Environmental operating limits
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling and storage requirement
RoHS Status	ROHS3 Compliant	Environmental compliance

Substitute Part Grouping Explanation

Substitution relationships for the RC1005J681CS are established based on strict electrical and mechanical parameter matching within the following criteria:

Primary Substitution Criteria:

Resistance value: 680 Ohms (exact match required)
Package format: 0402 (1005 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C to 155°C (exact match required)
Moisture Sensitivity Level: MSL 1 (exact match required)
RoHS Compliance: ROHS3 (exact match required)

Secondary Variation Parameters (Allowed Differences):

Tolerance: ±5% (direct equivalent) or ±1% (upgrade specification)
Power Rating: 0.063W / 1/16W (direct equivalent) or 0.1W / 1/10W (higher rating, backward compatible)
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (logistics variation)
Automotive Certification: AEC-Q200 (optional enhancement, not required for substitution)

Substitute parts are categorized as Direct Equivalents (matching tolerance and power rating), Upgrades (improved tolerance or power rating), or Similar Parts (enhanced certifications or packaging options).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	Packaging Type
RC1005J681CS	Samsung Electro-Mechanics	680 Ω	±5%	0.063	0402	±100ppm/°C	-55 to 155°C	No	Tape & Reel
RC0402JR-07680RL	YAGEO	680 Ω	±5%	0.063	0402	±100ppm/°C	-55 to 155°C	No	Tape & Reel
RC0402FR-07680RL	YAGEO	680 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	No	Cut Tape & Digi-Reel
RMCF0402FT680R	Stackpole Electronics Inc	680 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Yes	Cut Tape & Digi-Reel
AC0402JR-07680RL	YAGEO	680 Ω	±5%	0.063	0402	±100ppm/°C	-55 to 155°C	Yes	Tape & Reel
ERJ-2RKF6800X	Panasonic Electronic Components	680 Ω	±1%	0.1	0402	±100ppm/°C	-55 to 155°C	Yes	Cut Tape & Digi-Reel
RMCF0402JT680R	Stackpole Electronics Inc	680 Ω	±5%	0.063	0402	±100ppm/°C	-55 to 155°C	Yes	Tape & Reel

Engineering Selection Recommendations

Direct Equivalent Selection (RC0402JR-07680RL)

The YAGEO RC0402JR-07680RL provides direct electrical and mechanical equivalence to the RC1005J681CS. Both components share identical resistance (680 Ohms), tolerance (±5%), power rating (0.063W), package format (0402), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). This part is suitable for applications where the original Samsung component is unavailable and non-automotive applications do not require AEC-Q200 certification.

Upgrade Selection with Improved Tolerance (RC0402FR-07680RL)

The YAGEO RC0402FR-07680RL offers improved tolerance specification (±1% versus ±5%) while maintaining all other electrical parameters. This upgrade is applicable in circuits requiring tighter resistance tolerances for precision analog applications, filter networks, or reference circuits. The Cut Tape & Digi-Reel packaging provides alternative logistics handling.

Upgrade Selection with Automotive Certification (RMCF0402FT680R)

The Stackpole Electronics Inc RMCF0402FT680R combines ±1% tolerance improvement with AEC-Q200 automotive qualification. This selection is required for automotive applications, industrial equipment subject to automotive-grade reliability standards, or designs requiring enhanced temperature cycling performance validation.

Automotive-Grade Direct Equivalent (AC0402JR-07680RL)

The YAGEO AC0402JR-07680RL maintains the ±5% tolerance and 0.063W power rating of the original part while adding AEC-Q200 automotive certification. This selection is appropriate for automotive applications where tolerance relaxation is acceptable but automotive-grade component qualification is mandatory.

Higher Power Rating Selection (ERJ-2RKF6800X)

The Panasonic Electronic Components ERJ-2RKF6800X provides increased power dissipation capability (0.1W versus 0.063W) with ±1% tolerance and AEC-Q200 certification. This selection is applicable in circuits where thermal margin improvement is required or where component derating practices necessitate higher power-rated components.

Automotive-Grade Direct Equivalent with Tape & Reel (RMCF0402JT680R)

The Stackpole Electronics Inc RMCF0402JT680R maintains the ±5% tolerance and 0.063W power rating while providing AEC-Q200 automotive certification and Tape & Reel packaging. This selection is suitable for automotive applications where packaging format preference aligns with original component specifications.

Frequently Asked Questions (FAQ)

Q: Can RC0402JR-07680RL be used as a direct replacement for RC1005J681CS?

A: Yes. The RC0402JR-07680RL is a direct equivalent. Both components share identical electrical specifications (680 Ohms ±5%, 0.063W), package format (0402), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The primary difference is manufacturer (YAGEO versus Samsung Electro-Mechanics). No circuit redesign or validation is required for this substitution.

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

A: Tolerance defines the maximum allowable deviation from the nominal resistance value. A ±5% tolerance on a 680 Ohm resistor permits values between 646 and 714 Ohms. A ±1% tolerance restricts values between 673 and 687 Ohms. Tighter tolerance (±1%) is required in precision analog circuits, filter networks, and reference applications where resistance accuracy directly affects circuit performance. Standard tolerance (±5%) is sufficient for general-purpose applications including biasing, pull-up/pull-down networks, and current-limiting functions.

Q: Can a 0.1W (1/10W) rated resistor replace a 0.063W (1/16W) rated resistor?

A: Yes. A higher power-rated component is backward compatible in applications designed for lower power dissipation. The ERJ-2RKF6800X (0.1W rating) can replace the RC1005J681CS (0.063W rating) in any circuit. The higher power rating provides additional thermal margin and improved reliability under continuous operation. However, the physical dimensions remain identical (0402 package), so no layout modifications are required.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. It certifies that the component has undergone rigorous testing for automotive applications, including temperature cycling, humidity resistance, and reliability validation. AEC-Q200 certification is required for automotive applications, industrial equipment subject to automotive-grade standards, and designs requiring enhanced reliability documentation. Non-automotive applications do not require this certification.

Q: Are Tape & Reel and Cut Tape & Digi-Reel packaging interchangeable?

A: Both packaging formats contain identical components and are electrically equivalent. The difference is logistics and handling. Tape & Reel (TR) packaging is continuous reel format suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides smaller quantities on cut tape segments. Selection depends on procurement volume, assembly equipment compatibility, and inventory management practices. Component electrical performance is unaffected by packaging format.

Q: Can RMCF0402JT680R be used in non-automotive applications?

A: Yes. RMCF0402JT680R is a general-purpose component that carries AEC-Q200 automotive certification. Automotive-certified components meet or exceed standard industrial specifications and can be used in any application. The AEC-Q200 certification represents enhanced qualification and reliability validation, making it suitable for both automotive and non-automotive applications. No restrictions apply to using automotive-grade components in standard applications.

Q: What is MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates the lowest moisture sensitivity classification. Components rated MSL 1 require no special moisture control during storage, handling, or assembly. They can be stored in standard warehouse conditions without desiccant packaging or humidity-controlled environments. All substitute parts listed maintain MSL 1 rating, ensuring compatibility with standard manufacturing and storage practices.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the original RC1005J681CS specification. ROHS3 compliance certifies that the component contains no restricted hazardous substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers) and meets environmental regulatory requirements for electronic equipment manufacturing and disposal.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message