RC1608F1181CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1181CS is a 1.18 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 and is RoHS3 compliant with 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 compliance ratings to ensure direct functional interchangeability in circuit designs.

Substiute Parts

RC1608F1181CS

Samsung Electro-MechanicsIn Stock: 706RC1608F1181CS Datasheet

Current PartRFQ

CR0603-FX-1181ELF

Bourns Inc.In Stock: 20616CR0603-FX-1181ELF Datasheet

DirectRFQ

RC0603FR-071K18L

YAGEOIn Stock: 221249RC0603FR-071K18L Datasheet

DirectRFQ

AC0603FR-071K18L

YAGEOIn Stock: 11084AC0603FR-071K18L Datasheet

SimilarRFQ

CRCW06031K18FKEA

Vishay DaleIn Stock: 40441CRCW06031K18FKEA Datasheet

SimilarRFQ

ERJ-3EKF1181V

Panasonic Electronic ComponentsIn Stock: 35202ERJ-3EKF1181V Datasheet

SimilarRFQ

RMCF0603FT1K18

Stackpole Electronics IncIn Stock: 65322RMCF0603FT1K18 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1608F1181CS are classified into two categories based on functional equivalence and application scope:

Direct Equivalents maintain identical electrical and mechanical specifications without additional certifications:

• CR0603-FX-1181ELF (Bourns Inc.)
• RC0603FR-071K18L (YAGEO)

These parts share the core specifications: 1.18 kOhms resistance, ±1% tolerance, 0.1W power rating, 0603 package, thick film composition, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, MSL 1, and RoHS3 compliance.

Automotive-Qualified Alternatives include additional AEC-Q200 certification suitable for automotive and high-reliability applications:

• AC0603FR-071K18L (YAGEO)
• CRCW06031K18FKEA (Vishay Dale)
• ERJ-3EKF1181V (Panasonic Electronic Components)
• RMCF0603FT1K18 (Stackpole Electronics Inc)

These parts maintain all core electrical and mechanical parameters while adding automotive-grade qualification. Minor dimensional variations exist within acceptable tolerances (length 1.55mm to 1.60mm, height 0.50mm to 0.55mm).

Substitution is valid when the application requirements match the provided specifications. All listed parts are Active status products with current manufacturing and inventory availability.

Parameter Comparison

Engineering Selection Recommendations

For General-Purpose Applications: RC0603FR-071K18L (YAGEO) or CR0603-FX-1181ELF (Bourns Inc.) are direct functional equivalents to RC1608F1181CS. Both maintain identical electrical specifications and environmental compliance. YAGEO RC0603FR-071K18L offers the highest inventory availability (221,230 pcs), supporting supply chain continuity.

For Automotive and High-Reliability Applications: RMCF0603FT1K18 (Stackpole Electronics Inc), CRCW06031K18FKEA (Vishay Dale), ERJ-3EKF1181V (Panasonic Electronic Components), or AC0603FR-071K18L (YAGEO) are suitable when AEC-Q200 automotive qualification is required. All four parts maintain core specifications while meeting automotive-grade standards. RMCF0603FT1K18 provides the largest inventory (65,297 pcs) among automotive-qualified options.

Compliance Verification: All listed parts are Active status products with RoHS3 compliance and MSL 1 rating. REACH status is Unaffected for all parts. ECCN classification is EAR99 for all parts. Selection between direct equivalents and automotive-qualified alternatives depends solely on application requirements and qualification mandates.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-071K18L replace RC1608F1181CS directly in any circuit? A: Yes. RC0603FR-071K18L matches all electrical parameters (1.18 kΩ, ±1%, 0.1W), mechanical dimensions (0603 package), temperature characteristics (±100ppm/°C, -55°C to 155°C), and compliance ratings (RoHS3, MSL 1). Direct substitution is valid without circuit modification.

Q: What is the difference between direct equivalents and automotive-qualified alternatives? A: Direct equivalents (CR0603-FX-1181ELF, RC0603FR-071K18L) provide identical electrical and mechanical specifications without automotive certification. Automotive-qualified alternatives (RMCF0603FT1K18, CRCW06031K18FKEA, ERJ-3EKF1181V, AC0603FR-071K18L) include AEC-Q200 certification for automotive applications. Both categories are functionally interchangeable; selection depends on application requirements.

Q: Are there dimensional differences between substitute parts? A: Minor dimensional variations exist within acceptable tolerances. Length ranges from 1.55mm to 1.60mm; height ranges from 0.50mm to 0.55mm. All parts conform to 0603 (1608 Metric) package specification. These variations do not affect PCB layout or assembly compatibility.

Q: Which substitute part has the best inventory availability? A: RC0603FR-071K18L (YAGEO) has the highest inventory at 221,230 pcs. For automotive-qualified alternatives, RMCF0603FT1K18 (Stackpole Electronics Inc) has the highest inventory at 65,297 pcs.

Q: Do all substitute parts have the same temperature coefficient? A: Yes. All listed parts, including RC1608F1181CS and all substitutes, have a temperature coefficient of ±100ppm/°C and operate across the identical temperature range of -55°C to 155°C.

Q: Is MSL rating identical across all parts? A: Yes. RC1608F1181CS and all substitute parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can automotive-qualified parts be used in non-automotive applications? A: Yes. Automotive-qualified parts (AEC-Q200) exceed general-purpose requirements and are suitable for any application. Using automotive-grade components in non-automotive circuits introduces no compatibility issues.