RC1608J1R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J1R1CS is a 1.1 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation and features moisture-resistant construction suitable for general-purpose applications. 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 compatibility, and environmental ratings within the 0603 package category.

Substiute Parts

RC1608J1R1CS

Samsung Electro-MechanicsIn Stock: 1292RC1608J1R1CS Datasheet

Current PartRFQ

KTR03EZPF1R10

Rohm SemiconductorIn Stock: 14133KTR03EZPF1R10 Datasheet

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RC0603JR-071R1L

YAGEOIn Stock: 4566RC0603JR-071R1L Datasheet

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RMCF0603FT1R10

Stackpole Electronics IncIn Stock: 79052RMCF0603FT1R10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608J1R1CS is determined by the following mandatory parameters:

Electrical Compatibility Requirements:

• Resistance value: 1.1 Ohms (exact match required)
• Power rating: 0.1W minimum (equal or higher acceptable)
• Tolerance: ±5% or tighter (±1% acceptable as upgrade)
• Temperature coefficient: -55°C ~ 155°C operating range (minimum requirement)

Mechanical Compatibility Requirements:

• Package format: 0603 (1608 Metric) exact match
• Composition: Thick film construction
• Termination count: 2 terminations
• Physical dimensions: Compatible with 0603 footprint specifications

Compliance Requirements:

• RoHS3 compliance mandatory
• MSL rating: 1 (Unlimited) or equivalent
• REACH Unaffected status

All three substitute parts meet these criteria. Parts with ±1% tolerance (KTR03EZPF1R10, RMCF0603FT1R10) represent electrical upgrades while maintaining full mechanical and compliance compatibility. The RC0603JR-071R1L maintains identical tolerance specification as the main part.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Specifications): RC0603JR-071R1L (YAGEO) functions as a direct equivalent to RC1608J1R1CS. Both parts share identical resistance value, tolerance (±5%), power rating, package format, and moisture-resistant thick film construction. This substitute maintains all compliance certifications and environmental ratings. Selection between these two parts depends on supplier availability and procurement lead times.

Upgraded Substitutes (Enhanced Tolerance): RMCF0603FT1R10 (Stackpole Electronics Inc) and KTR03EZPF1R10 (Rohm Semiconductor) both provide ±1% tolerance specification, representing electrical performance improvement over the ±5% tolerance of the main part. Both are AEC-Q200 automotive-qualified components. These parts are suitable for applications requiring tighter resistance tolerance while maintaining identical package compatibility and power rating. The improved temperature coefficient (±200ppm/°C versus ±300ppm/°C) provides enhanced stability across the operating temperature range.

Compliance and Certification Status: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) rating. No compliance degradation occurs with any substitute selection.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-071R1L replace RC1608J1R1CS in existing designs? A: Yes. RC0603JR-071R1L is a direct equivalent with identical electrical specifications (1.1 Ohms ±5%, 0.1W), package format (0603), and moisture-resistant thick film construction. No design modification is required.

Q: What is the advantage of using RMCF0603FT1R10 or KTR03EZPF1R10? A: Both parts offer ±1% tolerance compared to the ±5% tolerance of RC1608J1R1CS, providing tighter resistance accuracy. Both include AEC-Q200 automotive qualification and improved temperature coefficient (±200ppm/°C). These upgrades are beneficial for precision applications or automotive environments, though they are not required for general-purpose substitution.

Q: Are all substitute parts physically compatible with the 0603 footprint? A: Yes. All substitute parts use the 0603 (1608 Metric) package format with identical termination count (2) and compatible physical dimensions. Direct PCB footprint compatibility is confirmed.

Q: Do substitute parts maintain moisture resistance? A: RC0603JR-071R1L maintains moisture-resistant construction identical to the main part. RMCF0603FT1R10 and KTR03EZPF1R10 do not specify moisture-resistant features, though both maintain MSL 1 (Unlimited) rating. For moisture-critical applications, RC0603JR-071R1L is the preferred substitute.

Q: Are all parts RoHS3 compliant? A: Yes. RC1608J1R1CS, RC0603JR-071R1L, RMCF0603FT1R10, and KTR03EZPF1R10 all maintain ROHS3 compliance and REACH Unaffected status.

Q: Can these parts be used interchangeably in automotive applications? A: RMCF0603FT1R10 and KTR03EZPF1R10 carry AEC-Q200 automotive qualification. RC1608J1R1CS and RC0603JR-071R1L do not specify automotive qualification. For automotive applications, RMCF0603FT1R10 or KTR03EZPF1R10 are the appropriate selections.

Q: What is the temperature coefficient difference and its impact? A: RC1608J1R1CS has ±300ppm/°C temperature coefficient, while all three substitute parts have ±200ppm/°C. The lower coefficient in substitute parts indicates better resistance stability across temperature variations, beneficial for precision circuits operating across the full -55°C ~ 155°C range.