RC1608F31R6CS Equivalent & Substitute Parts

Part Overview

The RC1608F31R6CS is a 31.6 Ohm ±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 and is RoHS3 compliant with moisture sensitivity level 1 (unlimited). The part is designed for general-purpose applications requiring precision resistive elements with moisture resistance characteristics. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct board-level interchangeability.

Substiute Parts

RC1608F31R6CS

Samsung Electro-MechanicsIn Stock: 1021RC1608F31R6CS Datasheet

Current PartRFQ

RC0603FR-0731R6L

YAGEOIn Stock: 256149RC0603FR-0731R6L Datasheet

DirectRFQ

CRCW060331R6FKEA

Vishay DaleIn Stock: 28101CRCW060331R6FKEA Datasheet

SimilarRFQ

ERJ-3EKF31R6V

Panasonic Electronic ComponentsIn Stock: 68378ERJ-3EKF31R6V Datasheet

SimilarRFQ

RMCF0603FT31R6

Stackpole Electronics IncIn Stock: 6146RMCF0603FT31R6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1608F31R6CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Resistance value: 31.6 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.1W / 1/10W (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical & Package Specifications:

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

Compliance & Environmental:

• RoHS3 compliance (required for substitution)
• Moisture Sensitivity Level 1 (required for substitution)
• Tape & Reel packaging format (standard for production use)

All substitute parts listed below meet these criteria and are therefore direct functional equivalents suitable for board-level replacement without circuit redesign or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the RC1608F31R6CS and meet identical electrical and mechanical specifications. Selection among these alternatives is based on the following factors:

Direct Equivalent (No Additional Certifications): RC0603FR-0731R6L (YAGEO) provides direct substitution with identical specifications and moisture-resistant thick film composition. This part is suitable for general-purpose applications where automotive qualification is not required.

Automotive-Qualified Alternatives: CRCW060331R6FKEA (Vishay Dale), ERJ-3EKF31R6V (Panasonic), and RMCF0603FT31R6 (Stackpole) all carry AEC-Q200 automotive qualification ratings. These parts are suitable for applications requiring automotive-grade reliability and are interchangeable with the base part for non-automotive applications as well.

All substitute parts maintain RoHS3 compliance, moisture sensitivity level 1 (unlimited), and active product status. Dimensional variations are within acceptable tolerances for standard PCB assembly processes. Selection should be based on supply chain availability, lead time requirements, and any application-specific certifications mandated by end-use specifications.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-0731R6L (YAGEO) be used as a direct replacement for RC1608F31R6CS (Samsung)?

A: Yes. RC0603FR-0731R6L meets all electrical and mechanical specifications of the RC1608F31R6CS, including 31.6 Ohm resistance, ±1% tolerance, 0.1W power rating, 0603 package format, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both parts are RoHS3 compliant with MSL 1 rating.

Q: What is the difference between the Samsung RC1608F31R6CS and the automotive-qualified alternatives?

A: The Samsung RC1608F31R6CS is specified as moisture-resistant thick film. The automotive-qualified alternatives (Vishay CRCW060331R6FKEA, Panasonic ERJ-3EKF31R6V, and Stackpole RMCF0603FT31R6) carry AEC-Q200 certification in addition to identical base specifications. All parts are electrically and mechanically interchangeable. Automotive-qualified parts are suitable for both automotive and general-purpose applications.

Q: Are there dimensional differences between these substitute parts?

A: Minor dimensional variations exist within acceptable tolerances. The RC1608F31R6CS, RC0603FR-0731R6L, and ERJ-3EKF31R6V share identical dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. The Vishay CRCW060331R6FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" (0.50mm) maximum seated height. The Stackpole RMCF0603FT31R6 measures 0.061" L x 0.031" W (1.55mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. These variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All listed substitute parts, including the original RC1608F31R6CS, are rated at Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Which substitute part has the highest inventory availability?

A: RC0603FR-0731R6L (YAGEO) has the highest inventory with 256,073 pieces in stock, followed by ERJ-3EKF31R6V (Panasonic) with 68,346 pieces, CRCW060331R6FKEA (Vishay Dale) with 28,025 pieces, and RMCF0603FT31R6 (Stackpole) with 6,088 pieces.

Q: Can automotive-qualified parts be used in non-automotive applications?

A: Yes. Automotive-qualified parts such as CRCW060331R6FKEA, ERJ-3EKF31R6V, and RMCF0603FT31R6 meet or exceed the specifications of the base RC1608F31R6CS and are suitable for any application where the original part is specified. Automotive qualification represents additional testing and reliability assurance that benefits all applications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging format, which is the standard for automated PCB assembly processes.