RC1608F1051CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1051CS is a 1.05 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit applications.

Substiute Parts

RC1608F1051CS

Samsung Electro-MechanicsIn Stock: 1124RC1608F1051CS Datasheet

Current PartRFQ

CR0603-FX-1051ELF

Bourns Inc.In Stock: 25152CR0603-FX-1051ELF Datasheet

DirectRFQ

RC0603FR-071K05L

YAGEOIn Stock: 58546RC0603FR-071K05L Datasheet

DirectRFQ

AC0603FR-071K05L

YAGEOIn Stock: 21351AC0603FR-071K05L Datasheet

SimilarRFQ

CRCW06031K05FKEA

Vishay DaleIn Stock: 20575CRCW06031K05FKEA Datasheet

SimilarRFQ

ERJ-3EKF1051V

Panasonic Electronic ComponentsIn Stock: 74254ERJ-3EKF1051V Datasheet

SimilarRFQ

RMCF0603FT1K05

Stackpole Electronics IncIn Stock: 22547RMCF0603FT1K05 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on their alignment with the main part specifications:

Direct Substitutes maintain identical electrical and mechanical parameters without additional certifications:

• CR0603-FX-1051ELF (Bourns Inc.)
• RC0603FR-071K05L (YAGEO)

These parts match all core specifications: 1.05 kOhms ±1%, 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.

Similar Substitutes include automotive-grade variants with AEC-Q200 qualification:

• AC0603FR-071K05L (YAGEO)
• CRCW06031K05FKEA (Vishay Dale)
• ERJ-3EKF1051V (Panasonic Electronic Components)
• RMCF0603FT1K05 (Stackpole Electronics Inc)

These parts maintain all electrical and environmental specifications of the main part while adding AEC-Q200 automotive qualification. Minor dimensional variations exist within acceptable tolerances for 0603 package format.

Parameter Comparison

Engineering Selection Recommendations

For Standard Industrial Applications: Select CR0603-FX-1051ELF (Bourns Inc.) or RC0603FR-071K05L (YAGEO) as direct equivalents. Both parts maintain identical specifications to the RC1608F1051CS with Active product status and full ROHS3 compliance. These options provide the closest functional match without additional automotive qualification overhead.

For Automotive and High-Reliability Applications: Select from the AEC-Q200 qualified variants: AC0603FR-071K05L (YAGEO), CRCW06031K05FKEA (Vishay Dale), ERJ-3EKF1051V (Panasonic Electronic Components), or RMCF0603FT1K05 (Stackpole Electronics Inc). These parts meet automotive qualification standards while maintaining all electrical and environmental specifications of the main part. All variants are Active status with ROHS3 compliance.

Inventory Availability Consideration: RC0603FR-071K05L (YAGEO) offers the highest inventory availability at 58,506 pieces. ERJ-3EKF1051V (Panasonic) provides 74,145 pieces for AEC-Q200 applications. CR0603-FX-1051ELF (Bourns) maintains 25,080 pieces.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1608F1051CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical electrical specifications (1.05 kOhms ±1%, 0.1W), mechanical package (0603), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and environmental ratings (MSL 1, ROHS3). Direct substitution is functionally equivalent at the circuit level.

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

A: Direct substitutes (CR0603-FX-1051ELF, RC0603FR-071K05L) match all specifications without additional certifications. Similar substitutes add AEC-Q200 automotive qualification while maintaining identical core electrical and mechanical parameters. The AEC-Q200 qualification indicates compliance with automotive reliability standards but does not alter the resistor's functional performance in non-automotive applications.

Q: Are there dimensional differences between the main part and substitutes?

A: All parts use the 0603 (1608 Metric) package. Nominal dimensions are 0.063" L x 0.031" W (1.60mm x 0.80mm) with maximum seated height of 0.022" (0.55mm). CRCW06031K05FKEA and RMCF0603FT1K05 show minor dimensional variations (1.55mm length, 0.85mm width for CRCW; 1.55mm length for RMCF) within standard 0603 package tolerances. These variations do not affect PCB footprint compatibility.

Q: Which substitute should I select for cost optimization?

A: CR0603-FX-1051ELF (Bourns) and RC0603FR-071K05L (YAGEO) are direct equivalents without automotive qualification, typically offering cost advantages over AEC-Q200 variants. Selection depends on application requirements and procurement specifications.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance matching the main part specification. All parts are also REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can I use AEC-Q200 qualified parts in non-automotive applications?

A: Yes. AEC-Q200 qualification represents an additional quality and reliability standard. Parts meeting this standard are fully functional in non-automotive applications and may provide enhanced reliability margins in demanding environments.