Equivalent & Substitute Parts for RC1608J680CS

Part Overview

The RC1608J680CS is a 68 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The RC1608J680CS serves as a standard general-purpose resistor for consumer and industrial electronics applications. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size and dimensions), and environmental operating parameters. Alternative sources are necessary to ensure supply chain continuity, optimize procurement costs, and accommodate specific application requirements such as automotive qualification or enhanced tolerance specifications.

Substiute Parts

RC1608J680CS

Samsung Electro-MechanicsIn Stock: 1039RC1608J680CS Datasheet

Current PartRFQ

RC0603JR-0768RL

YAGEOIn Stock: 671819RC0603JR-0768RL Datasheet

DirectRFQ

CRG0603F68R

TE Connectivity Passive ProductIn Stock: 19275CRG0603F68R Datasheet

UpgradeRFQ

ERJ-3EKF68R0V

Panasonic Electronic ComponentsIn Stock: 262738ERJ-3EKF68R0V Datasheet

UpgradeRFQ

ERJ-3GEYJ680V

Panasonic Electronic ComponentsIn Stock: 261475ERJ-3GEYJ680V Datasheet

UpgradeRFQ

RC0603FR-0768RL

YAGEOIn Stock: 741915RC0603FR-0768RL Datasheet

UpgradeRFQ

RMCF0603FT68R0

Stackpole Electronics IncIn Stock: 251645RMCF0603FT68R0 Datasheet

UpgradeRFQ

AC0603JR-0768RL

YAGEOIn Stock: 15338AC0603JR-0768RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1608J680CS are classified into three categories based on electrical and mechanical compatibility:

Direct Equivalent (Identical Specifications): Parts matching all key parameters: 68 Ohms resistance, ±5% tolerance, 0.1W power rating, 0603 package, -55°C to 155°C operating range, and RoHS3 compliance. These parts are functionally interchangeable without circuit redesign.

Upgrade Substitutes (Enhanced Tolerance): Parts with tighter tolerance specifications (±1% instead of ±5%) while maintaining identical resistance value, power rating, package size, and operating temperature range. These parts provide improved accuracy for precision applications and are backward compatible with designs specified for ±5% tolerance.

Upgrade Substitutes (Automotive Qualification): Parts with AEC-Q200 automotive qualification rating, maintaining 68 Ohms resistance, 0.1W power rating, 0603 package, and RoHS3 compliance. Available in both ±5% and ±1% tolerance variants. These parts meet automotive reliability standards and are suitable for automotive and high-reliability applications.

Similar Parts (Automotive + Moisture Resistant): Parts combining automotive AEC-Q200 qualification with moisture-resistant features, matching all core electrical and mechanical specifications of the main part.

Substitution compatibility is determined by: (1) identical resistance value and power rating, (2) matching or superior tolerance specification, (3) identical package form factor (0603), (4) overlapping or identical operating temperature range, and (5) equivalent or superior environmental compliance ratings.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Consumer/Industrial Applications): RC0603JR-0768RL (YAGEO) is the primary direct equivalent, offering identical electrical specifications (68 Ohms ±5%, 0.1W), matching package form factor (0603), equivalent operating temperature range (-55°C to 155°C), moisture-resistant composition, and RoHS3 compliance. This part is suitable for non-automotive applications requiring standard tolerance specifications.

For Precision Applications (±1% Tolerance Required): RC0603FR-0768RL (YAGEO) provides enhanced tolerance (±1%) while maintaining moisture-resistant features, identical power rating, package size, and operating temperature range. This upgrade is appropriate for circuits requiring tighter resistance accuracy without automotive qualification requirements.

For Automotive Applications (AEC-Q200 Qualification): ERJ-3EKF68R0V (Panasonic Electronic Components) or RMCF0603FT68R0 (Stackpole Electronics Inc) are suitable for automotive designs. Both parts carry AEC-Q200 qualification, provide ±1% tolerance, maintain 0603 package compatibility, and operate across the full -55°C to 155°C temperature range. ERJ-3EKF68R0V features ±100ppm/°C temperature coefficient matching the main part specification.

For Automotive Applications (Standard Tolerance): ERJ-3GEYJ680V (Panasonic Electronic Components) or AC0603JR-0768RL (YAGEO) are suitable when ±5% tolerance is acceptable in automotive designs. Both carry AEC-Q200 qualification and maintain full compatibility with the RC1608J680CS electrical and mechanical specifications. AC0603JR-0768RL additionally provides moisture-resistant features.

Compliance Verification: All substitute parts maintain RoHS3 compliance and MSL 1 (unlimited) moisture sensitivity level, ensuring regulatory and handling compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q1: Can RC0603JR-0768RL (YAGEO) be used as a direct replacement for RC1608J680CS (Samsung)?

A: Yes. RC0603JR-0768RL is a direct equivalent offering identical electrical specifications (68 Ohms ±5%, 0.1W), matching 0603 package dimensions, equivalent operating temperature range (-55°C to 155°C), moisture-resistant composition, and RoHS3 compliance. No circuit redesign is required.

Q2: What is the difference between ±5% and ±1% tolerance substitutes?

A: Tolerance defines the acceptable variance in actual resistance value from the nominal 68 Ohm specification. ±5% tolerance allows resistance between 64.6 and 71.4 Ohms; ±1% tolerance restricts the range to 67.32 and 68.68 Ohms. ±1% parts provide higher accuracy for precision circuits but are backward compatible with designs specified for ±5% tolerance.

Q3: Are automotive-qualified parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts such as ERJ-3EKF68R0V, RMCF0603FT68R0, and AC0603JR-0768RL meet or exceed reliability standards for general industrial and consumer applications. These parts are fully compatible with non-automotive designs and offer enhanced reliability margins.

Q4: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture-control handling during storage or assembly. All listed substitute parts carry MSL 1 classification, matching the original RC1608J680CS specification.

Q5: Are there dimensional differences between substitute parts?

A: All substitute parts conform to the 0603 (1608 Metric) package standard with nominal dimensions of 0.063" L × 0.031" W (1.60mm × 0.80mm) and maximum seated height of 0.022" (0.55mm). RMCF0603FT68R0 has a slightly smaller length of 0.061" (1.55mm) but remains fully compatible with standard 0603 PCB footprints.

Q6: Which substitute offers the best temperature coefficient specification?

A: RC1608J680CS, RC0603JR-0768RL, RC0603FR-0768RL, ERJ-3EKF68R0V, and RMCF0603FT68R0 all feature ±100ppm/°C temperature coefficient, providing superior temperature stability compared to CRG0603F68R and ERJ-3GEYJ680V, which specify ±200ppm/°C.

Q7: Can I substitute a ±1% tolerance part in a circuit designed for ±5% tolerance?

A: Yes. ±1% tolerance parts are fully backward compatible with designs specified for ±5% tolerance. The tighter tolerance provides improved accuracy without requiring circuit modifications.

Q8: What packaging formats are available for substitute parts?

A: Substitute parts are available in Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) packaging formats. Selection depends on procurement volume and assembly line requirements. All formats maintain identical electrical and mechanical specifications.