RC1608J5R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J5R1CS is a 5.1 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status with moisture resistant characteristics and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and REACH unaffected, suitable for general industrial and consumer electronics applications. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and environmental ratings.

Substiute Parts

RC1608J5R1CS

Samsung Electro-MechanicsIn Stock: 953RC1608J5R1CS Datasheet

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KTR03EZPF5R10

Rohm SemiconductorIn Stock: 18524KTR03EZPF5R10 Datasheet

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RC0603JR-075R1L

YAGEOIn Stock: 215087RC0603JR-075R1L Datasheet

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RMCF0603FT5R10

Stackpole Electronics IncIn Stock: 55431RMCF0603FT5R10 Datasheet

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RMCF0603JT5R10

Stackpole Electronics IncIn Stock: 30450RMCF0603JT5R10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1608J5R1CS are qualified based on the following critical parameters:

Electrical Equivalence: All substitute parts maintain the 5.1 Ohm resistance value and 0.1W power rating. Tolerance variations (±5% or ±1%) are acceptable as they represent tighter specifications than the original part.

Mechanical Compatibility: All substitute parts use the 0603 (1608 Metric) package with identical footprint dimensions (0.063" L x 0.031" W / 1.60mm x 0.80mm) and maximum seated height (0.022" / 0.55mm), ensuring direct PCB layout compatibility.

Construction Type: All substitute parts employ thick film composition, maintaining the same manufacturing technology and performance characteristics.

Environmental Compliance: All substitute parts operate within the -55°C ~ 155°C temperature range and maintain ROHS3 compliance and REACH unaffected status.

Secondary Considerations: Temperature coefficient variations (±200ppm/°C vs. ±300ppm/°C) and additional certifications (AEC-Q200 automotive qualification) represent enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Identical Specifications):

RC0603JR-075R1L (YAGEO) serves as a direct functional equivalent to RC1608J5R1CS. Both parts share identical electrical specifications (5.1 Ohms ±5%, 0.1W), mechanical package (0603), composition (thick film), and environmental ratings (-55°C ~ 155°C). This part maintains ROHS3 compliance and REACH unaffected status. The primary distinction is manufacturer origin and slightly improved temperature coefficient (±200ppm/°C vs. ±300ppm/°C), which represents a performance enhancement. Inventory availability is significantly higher (215026 Pcs).

Enhanced Specification Substitutes (Tighter Tolerance):

KTR03EZPF5R10 (Rohm Semiconductor) and RMCF0603FT5R10 (Stackpole Electronics Inc) both provide ±1% tolerance specifications compared to the original ±5%. These parts maintain all other critical parameters including 5.1 Ohm resistance, 0.1W power rating, 0603 package, and -55°C ~ 155°C operating range. Both include AEC-Q200 automotive qualification and improved temperature coefficient (±200ppm/°C). These substitutes are suitable for applications requiring tighter tolerance control.

Automotive-Qualified Alternatives:

RMCF0603JT5R10 (Stackpole Electronics Inc) matches the original part's ±5% tolerance specification while adding AEC-Q200 automotive qualification and improved temperature coefficient (±200ppm/°C). This part is appropriate for automotive and high-reliability applications requiring automotive-grade components.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity level, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can KTR03EZPF5R10 replace RC1608J5R1CS in all applications?

A: KTR03EZPF5R10 is electrically and mechanically compatible with RC1608J5R1CS. The ±1% tolerance specification is tighter than the original ±5%, making it suitable for applications where the original tolerance is acceptable. The improved temperature coefficient (±200ppm/°C vs. ±300ppm/°C) represents enhanced performance. AEC-Q200 automotive qualification is an additional feature not present in the original part. Substitution is valid for all applications where the original part was specified.

Q: What is the difference between RMCF0603FT5R10 and RMCF0603JT5R10?

A: Both parts are manufactured by Stackpole Electronics Inc in the 0603 package with 5.1 Ohm resistance and 0.1W power rating. The primary difference is tolerance: RMCF0603FT5R10 specifies ±1% tolerance, while RMCF0603JT5R10 specifies ±5% tolerance. Both include AEC-Q200 automotive qualification and ±200ppm/°C temperature coefficient. Selection between these parts depends on tolerance requirements for the specific application.

Q: Is RC0603JR-075R1L a direct equivalent to RC1608J5R1CS?

A: RC0603JR-075R1L is a direct functional equivalent. Both parts share 5.1 Ohm resistance, ±5% tolerance, 0.1W power rating, 0603 package, thick film composition, and -55°C ~ 155°C operating temperature range. Both maintain ROHS3 compliance and REACH unaffected status. The substitute part offers improved temperature coefficient (±200ppm/°C vs. ±300ppm/°C) and significantly higher inventory availability (215026 Pcs vs. 874 Pcs).

Q: Are all substitute parts suitable for moisture-sensitive applications?

A: All substitute parts maintain MSL 1 (unlimited) moisture sensitivity level, identical to the original RC1608J5R1CS. This classification indicates unlimited shelf life without moisture control requirements. All parts are suitable for moisture-sensitive applications without additional drying or storage precautions.

Q: What is the significance of AEC-Q200 qualification on substitute parts?

A: AEC-Q200 is an automotive industry qualification standard for passive components. KTR03EZPF5R10, RMCF0603FT5R10, and RMCF0603JT5R10 include this certification, indicating compliance with automotive reliability and performance standards. The original RC1608J5R1CS does not specify AEC-Q200 qualification. For non-automotive applications, this certification is not a requirement but represents an additional quality assurance measure.

Q: Can substitute parts with ±1% tolerance be used in circuits designed for ±5% tolerance?

A: Yes. Substitute parts with ±1% tolerance (KTR03EZPF5R10 and RMCF0603FT5R10) can be used in applications designed for ±5% tolerance components. The tighter tolerance specification represents enhanced performance and is backward compatible with circuits accepting the original ±5% specification. No circuit redesign or recalculation is required.

Q: Are there any dimensional differences between substitute parts?

A: RMCF0603FT5R10 and RMCF0603JT5R10 specify slightly different length dimensions (0.061" / 1.55mm vs. 0.063" / 1.60mm for other parts), though both remain within 0603 package classification. All parts maintain identical maximum seated height (0.022" / 0.55mm) and width (0.031" / 0.80mm). These minor dimensional variations are within standard 0603 package tolerances and do not affect PCB layout compatibility.