RC1608F6653CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F6653CS is a 665 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is designed for general-purpose applications requiring precision resistive elements with moisture resistance in compact surface-mount form factors. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit designs.

Substiute Parts

RC1608F6653CS

Samsung Electro-MechanicsIn Stock: 703RC1608F6653CS Datasheet

Current PartRFQ

CR0603-FX-6653ELF

Bourns Inc.In Stock: 19142CR0603-FX-6653ELF Datasheet

DirectRFQ

RC0603FR-07665KL

YAGEOIn Stock: 64053RC0603FR-07665KL Datasheet

DirectRFQ

CRCW0603665KFKEA

Vishay DaleIn Stock: 23542CRCW0603665KFKEA Datasheet

SimilarRFQ

ERJ-3EKF6653V

Panasonic Electronic ComponentsIn Stock: 59321ERJ-3EKF6653V Datasheet

SimilarRFQ

RMCF0603FT665K

Stackpole Electronics IncIn Stock: 25459RMCF0603FT665K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1608F6653CS are qualified based on the following criteria:

Electrical Parameters (Mandatory Match):

• Resistance value: 665 kOhms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C

Mechanical Parameters (Mandatory Match):

• Package type: 0603 (1608 Metric)
• Number of terminations: 2
• Composition: Thick Film

Compliance Parameters (Mandatory Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitution Categories:

Direct Equivalents (identical specifications across all parameters):

• CR0603-FX-6653ELF (Bourns Inc.)
• RC0603FR-07665KL (YAGEO)

Similar Substitutes (all electrical and mechanical parameters match; additional automotive qualification present):

• CRCW0603665KFKEA (Vishay Dale) — includes AEC-Q200 automotive rating
• ERJ-3EKF6653V (Panasonic Electronic Components) — includes AEC-Q200 automotive rating
• RMCF0603FT665K (Stackpole Electronics Inc) — includes AEC-Q200 automotive rating

All substitute parts maintain identical core electrical performance and package compatibility. Automotive-qualified variants (AEC-Q200) provide additional reliability assurance for applications requiring automotive-grade components.

Parameter Comparison

Engineering Selection Recommendations

For General-Purpose Applications: Select CR0603-FX-6653ELF (Bourns Inc.) or RC0603FR-07665KL (YAGEO) as direct equivalents. Both parts maintain identical electrical and mechanical specifications to the RC1608F6653CS with Active product status and full ROHS3 compliance. These options provide maximum inventory availability and cost efficiency for non-automotive applications.

For Automotive and High-Reliability Applications: Select CRCW0603665KFKEA (Vishay Dale), ERJ-3EKF6653V (Panasonic Electronic Components), or RMCF0603FT665K (Stackpole Electronics Inc). All three parts meet AEC-Q200 automotive qualification standards while maintaining identical core electrical specifications. These variants are suitable for automotive-grade circuit designs and applications requiring enhanced reliability assurance.

Packaging Considerations: The RC0603FR-07665KL (YAGEO) is available in Cut Tape (CT) & Digi-Reel® packaging, offering flexibility for lower-volume or mixed-component orders. All other substitutes are supplied in standard Tape & Reel (TR) format suitable for automated assembly processes.

Product Status: All listed substitute parts maintain Active product status, ensuring continued availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC1608F6653CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts match the mandatory electrical parameters (665 kOhms ±1%, 0.1W, ±100ppm/°C, -55 to 155°C), mechanical specifications (0603 package, 2 terminations, thick film composition), and compliance requirements (ROHS3, MSL 1). Direct substitution is functionally equivalent at the circuit level.

Q: What is the difference between direct equivalents and similar substitutes?

A: Direct equivalents (CR0603-FX-6653ELF, RC0603FR-07665KL) have identical specifications to the RC1608F6653CS. Similar substitutes (CRCW0603665KFKEA, ERJ-3EKF6653V, RMCF0603FT665K) include additional AEC-Q200 automotive qualification, which provides enhanced reliability assurance but does not alter core electrical performance.

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

A: Yes. AEC-Q200 qualification represents an additional quality and reliability standard. Automotive-qualified parts can be used in general-purpose applications without performance degradation.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (Tape & Reel vs. Cut Tape & Digi-Reel) affects supply format and handling logistics only. Electrical and mechanical specifications remain identical. Select packaging based on assembly process requirements and order volume.

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

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture-control handling during storage or assembly. All listed parts share this specification.

Q: Can I mix different manufacturers' parts in the same circuit board assembly?

A: Yes. All substitute parts meet identical electrical specifications, tolerance, and operating parameters. Mixed-manufacturer assemblies are functionally equivalent provided all parts meet the specified 665 kOhms ±1% requirement.

Q: What is the temperature coefficient significance?

A: The ±100ppm/°C temperature coefficient indicates resistance value change across the operating temperature range (-55 to 155°C). All listed parts share this specification, ensuring consistent performance across temperature extremes.