RC1608F1R5CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1R5CS is a 1.5 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 MSL 1 moisture sensitivity rating. The part is designed for general-purpose applications requiring moisture-resistant thick film construction.

Equivalent and substitute parts are identified to provide design flexibility, ensure supply chain continuity, and accommodate specific application requirements such as automotive qualification or enhanced performance characteristics.

Substiute Parts

RC1608F1R5CS

Samsung Electro-MechanicsIn Stock: 886RC1608F1R5CS Datasheet

Current PartRFQ

ERJ-3BQF1R5V

Panasonic Electronic ComponentsIn Stock: 23211ERJ-3BQF1R5V Datasheet

UpgradeRFQ

ERJ-3RQF1R5V

Panasonic Electronic ComponentsIn Stock: 43071ERJ-3RQF1R5V Datasheet

UpgradeRFQ

KTR03EZPF1R50

Rohm SemiconductorIn Stock: 19721KTR03EZPF1R50 Datasheet

UpgradeRFQ

RMCF0603FT1R50

Stackpole Electronics IncIn Stock: 87722RMCF0603FT1R50 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic is based on the following allowed parameters that must remain constant across all equivalent parts:

Critical Parameters (Must Match):

• Resistance value: 1.5 Ohms
• Tolerance: ±1%
• Package format: 0603 (1608 Metric)
• Composition: Thick Film
• Operating temperature range: -55°C to 155°C
• RoHS3 compliance
• MSL 1 rating

Variable Parameters (Allowed to Differ):

• Power rating: 0.1W (main part) to 0.25W (upgrade substitutes)
• Temperature coefficient: ±300ppm/°C to ±200ppm/°C
• Manufacturer-specific features (automotive qualification, current sense capability, high voltage rating)
• Physical dimensions within tolerance (length 1.55mm to 1.60mm)

Substitute parts are grouped into two categories:

Direct Equivalents (Same Power Rating - 0.1W): ERJ-3RQF1R5V, KTR03EZPF1R50, RMCF0603FT1R50. These parts maintain identical power dissipation capacity and are suitable for direct replacement in existing designs.

Upgrade Substitute (Higher Power Rating - 0.25W): ERJ-3BQF1R5V. This part provides increased thermal headroom while maintaining all other critical specifications, suitable for applications requiring enhanced power handling.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Specifications): ERJ-3RQF1R5V, KTR03EZPF1R50, and RMCF0603FT1R50 are suitable direct substitutes for RC1608F1R5CS. All three maintain 0.1W power rating, ±1% tolerance, and 0603 package format. These parts carry AEC-Q200 automotive qualification, which provides additional reliability assurance for applications requiring automotive-grade components. The improved temperature coefficient (±200ppm/°C versus ±300ppm/°C) offers enhanced temperature stability across the operating range.

For Upgraded Performance: ERJ-3BQF1R5V provides 0.25W power rating while maintaining all other critical specifications. This upgrade is applicable when circuit design requires increased thermal margin or when component derating guidelines necessitate higher power capacity. AEC-Q200 qualification is included.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with environmental and moisture sensitivity requirements. REACH status is unaffected across all parts.

Supply Chain Continuity: Substitute parts demonstrate substantial inventory availability (19,652 to 87,674 units in stock), supporting production continuity and reducing lead time risk compared to the main part (815 units in stock).

Frequently Asked Questions (FAQ)

Q: Can ERJ-3BQF1R5V (0.25W) be used in place of RC1608F1R5CS (0.1W)?

A: Yes. The higher power rating of ERJ-3BQF1R5V is a superset of the 0.1W requirement. The component will operate within specification in any application designed for 0.1W dissipation. Physical dimensions and electrical characteristics remain compatible.

Q: What is the significance of the ±200ppm/°C temperature coefficient in substitute parts versus ±300ppm/°C in the main part?

A: The lower temperature coefficient (±200ppm/°C) indicates improved resistance stability across temperature variations. This is a performance enhancement, not a limitation. Applications sensitive to resistance drift will benefit from this characteristic.

Q: Are all substitute parts suitable for automotive applications?

A: All substitute parts carry AEC-Q200 automotive qualification. The main part (RC1608F1R5CS) does not specify this rating. If automotive qualification is required, substitute parts are the appropriate selection.

Q: Do the physical dimension differences between RMCF0603FT1R50 (1.55mm) and other parts (1.60mm) affect PCB layout?

A: Both dimensions fall within the 0603 (1608 Metric) package specification tolerance. PCB footprints designed for 0603 components accommodate this variation. No layout modification is required.

Q: What is MSL 1 rating and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture bake-out requirements. All parts in this comparison carry MSL 1, eliminating moisture-related handling constraints.

Q: Can these parts be used interchangeably in production?

A: Yes, provided the application does not specifically require non-automotive qualification. All parts meet the core electrical and mechanical specifications. Design validation should confirm compatibility with specific circuit requirements.