RC1005F684CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F684CS is a 680 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format with 1/16W (0.063W) power rating. This component is classified as Active product status with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and compliance certifications to ensure direct circuit board compatibility and functional interchangeability.

Key Parameters

Parameter	Value
Resistance	680 kOhms
Tolerance	±1%
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 Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the RC1005F684CS are classified into three categories based on electrical and mechanical parameter alignment:

Direct Equivalents maintain identical specifications across all critical parameters: 680 kOhms resistance, ±1% tolerance, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and ROHS3 compliance. These parts differ only in manufacturer and packaging format (Cut Tape versus Tape & Reel).

Upgrade Substitutes provide enhanced power rating (0.1W instead of 0.063W) while maintaining all other electrical and mechanical specifications. This category includes automotive-qualified components with AEC-Q200 certification, suitable for applications requiring higher thermal margin or automotive-grade reliability.

Similar Substitutes match all electrical and mechanical parameters but include additional certifications such as AEC-Q200 automotive qualification or enhanced moisture resistance features. These parts are functionally interchangeable with potential application-specific advantages.

The following parameters determine substitution eligibility:

Resistance value: 680 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 0402 (1005 Metric) (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature: -55°C ~ 155°C (exact match required)
Composition: Thick Film (exact match required)
Power Rating: 0.063W minimum (equal or higher acceptable)
Compliance: ROHS3 (minimum requirement)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Composition	RoHS Status	MSL	Packaging Type
RC1005F684CS	Samsung Electro-Mechanics	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Cut Tape (CT)
CR0402-FX-6803GLF	Bourns Inc.	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Tape & Reel (TR)
RC0402FR-07680KL	YAGEO	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Cut Tape (CT) & Digi-Reel®
ERJ-2RKF6803X	Panasonic Electronic Components	680 kOhms	±1%	0.1	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Tape & Reel (TR)
AC0402FR-07680KL	YAGEO	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Tape & Reel (TR)
CRCW0402680KFKED	Vishay Dale	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Tape & Reel (TR)
RMCF0402FT680K	Stackpole Electronics Inc	680 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Thick Film	ROHS3	1	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalent Selection: CR0402-FX-6803GLF (Bourns Inc.) and RC0402FR-07680KL (YAGEO) are direct functional equivalents to RC1005F684CS. Both maintain identical electrical specifications and ROHS3 compliance. Selection between these options depends on packaging preference (Tape & Reel versus Cut Tape) and supply chain availability. Both are Active product status with unlimited moisture sensitivity level.

Upgrade Path: ERJ-2RKF6803X (Panasonic Electronic Components) provides enhanced power rating of 0.1W (1/10W) compared to the original 0.063W specification. This component includes AEC-Q200 automotive qualification and maintains all other electrical parameters. This upgrade is suitable for applications requiring higher thermal margin or automotive-grade reliability standards.

Automotive-Qualified Alternatives: AC0402FR-07680KL (YAGEO), CRCW0402680KFKED (Vishay Dale), and RMCF0402FT680K (Stackpole Electronics Inc) are all AEC-Q200 qualified with identical electrical specifications to the main part. These components are appropriate for automotive applications or systems requiring automotive-grade component qualification. All maintain 0.063W power rating and ROHS3 compliance.

All listed substitute parts are Active product status and meet REACH compliance requirements. Selection should be based on application requirements, packaging format preference, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-6803GLF replace RC1005F684CS directly on the circuit board?

A: Yes. CR0402-FX-6803GLF is a direct equivalent with identical resistance (680 kOhms), tolerance (±1%), power rating (0.063W), package (0402), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The only difference is packaging format (Tape & Reel versus Cut Tape) and manufacturer. No circuit modifications are required.

Q: What is the difference between the main part and ERJ-2RKF6803X?

A: ERJ-2RKF6803X has a higher power rating of 0.1W (1/10W) compared to RC1005F684CS at 0.063W (1/16W). All other electrical specifications are identical. The upgrade provides additional thermal capacity and includes AEC-Q200 automotive qualification. This substitution is acceptable for applications where higher power dissipation margin is beneficial.

Q: Are the automotive-qualified parts (AC0402FR-07680KL, CRCW0402680KFKED, RMCF0402FT680K) suitable for non-automotive applications?

A: Yes. Automotive-qualified components meet or exceed standard industrial specifications. AEC-Q200 certification indicates enhanced reliability testing and quality standards. These parts are fully compatible with non-automotive applications and provide equivalent or superior performance to the original RC1005F684CS.

Q: Does packaging format (Cut Tape versus Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical specifications, mechanical dimensions, and performance characteristics remain identical regardless of packaging type. Selection should be based on manufacturing equipment compatibility and supply chain requirements.

Q: Can I use these substitute parts in moisture-sensitive applications?

A: All listed parts, including the main part RC1005F684CS, have Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements. These components are suitable for moisture-sensitive applications without special handling or storage precautions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status identical to RC1005F684CS. All parts are also REACH unaffected and classified under ECCN EAR99 with HTSUS code 8533.21.0030.

Q: What is the physical dimension compatibility between these parts?

A: All parts use identical 0402 (1005 Metric) package with dimensions of 0.039" L x 0.020" W (1.00mm x 0.50mm). Maximum seated height ranges from 0.015" to 0.016" (0.37mm to 0.40mm), which is within standard PCB assembly tolerances. All parts are mechanically interchangeable on circuit boards designed for 0402 package components.

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