RC1608F1R3CS Equivalent & Substitute Parts

Part Overview

The RC1608F1R3CS is a 1.3 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation and features moisture-resistant construction with an operating temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when alternative manufacturers offer components with matching electrical specifications, identical package dimensions, and compatible mechanical characteristics. Substitute parts enable procurement flexibility, support supply chain continuity, and provide access to components with enhanced certifications or performance characteristics.

Substiute Parts

RC1608F1R3CS

Samsung Electro-MechanicsIn Stock: 702RC1608F1R3CS Datasheet

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KTR03EZPF1R30

Rohm SemiconductorIn Stock: 7001KTR03EZPF1R30 Datasheet

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RMCF0603FT1R30

Stackpole Electronics IncIn Stock: 7198RMCF0603FT1R30 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1R3CS is determined by strict alignment with the following electrical and mechanical parameters:

Electrical Specifications:

• Resistance value: 1.3 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.1W / 1/10W (exact match required)
• Operating temperature range: -55°C to 155°C (minimum requirement)

Mechanical Specifications:

• Package format: 0603 (1608 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)

Compliance Requirements:

• RoHS3 compliance (mandatory)
• MSL 1 rating or equivalent (mandatory)

The identified substitute parts—KTR03EZPF1R30 (Rohm Semiconductor) and RMCF0603FT1R30 (Stackpole Electronics Inc)—satisfy all electrical and mechanical parameters. Both substitutes maintain identical resistance, tolerance, power rating, package dimensions, and operating temperature specifications. Both are RoHS3 compliant with MSL 1 ratings. The substitutes feature enhanced automotive-grade certifications (AEC-Q200) and improved temperature coefficients (±200ppm/°C versus ±300ppm/°C for the main part).

Parameter Comparison

Engineering Selection Recommendations

All three components—RC1608F1R3CS, KTR03EZPF1R30, and RMCF0603FT1R30—are functionally equivalent for applications requiring a 1.3 Ohm ±1% thick film resistor in the 0603 package with 0.1W power rating and -55°C to 155°C operating range.

RC1608F1R3CS (Samsung Electro-Mechanics): This component is suitable for general-purpose applications requiring moisture-resistant thick film construction. It maintains Active product status with full RoHS3 compliance and MSL 1 rating. The ±300ppm/°C temperature coefficient is appropriate for standard industrial and consumer applications.

KTR03EZPF1R30 (Rohm Semiconductor): This substitute offers automotive-grade AEC-Q200 certification with an improved temperature coefficient of ±200ppm/°C. The KTR series designation indicates high-voltage thick film construction. This component is suitable for automotive applications and environments requiring enhanced temperature stability and automotive qualification standards.

RMCF0603FT1R30 (Stackpole Electronics Inc): This substitute provides automotive-grade AEC-Q200 certification with a ±200ppm/°C temperature coefficient. The RMCF series is designed for automotive applications. Physical dimensions are 0.061" L x 0.031" W (1.55mm x 0.80mm), representing a minor variation from the main part's 0.063" L x 0.031" W (1.60mm x 0.80mm). This component is suitable for automotive applications and environments requiring AEC-Q200 qualification.

Selection between these components depends on application requirements: standard industrial use supports the RC1608F1R3CS; automotive applications with AEC-Q200 requirements support either KTR03EZPF1R30 or RMCF0603FT1R30; applications requiring superior temperature stability support either automotive-qualified substitute.

Frequently Asked Questions (FAQ)

Q: Are KTR03EZPF1R30 and RMCF0603FT1R30 direct replacements for RC1608F1R3CS?

A: Both KTR03EZPF1R30 and RMCF0603FT1R30 are functionally equivalent substitutes. They match all critical electrical specifications (1.3 Ohms ±1%, 0.1W power rating) and mechanical parameters (0603 package, thick film composition, 2 terminations). Both maintain identical operating temperature ranges (-55°C to 155°C) and compliance certifications (RoHS3, MSL 1). Physical dimensions are within acceptable tolerances for PCB assembly.

Q: What is the difference between the main part and the substitute parts?

A: The primary differences are temperature coefficient and automotive certification. RC1608F1R3CS features a ±300ppm/°C temperature coefficient without automotive qualification. KTR03EZPF1R30 and RMCF0603FT1R30 both feature ±200ppm/°C temperature coefficients and AEC-Q200 automotive certification. The improved temperature coefficient in the substitutes provides enhanced stability across the operating temperature range.

Q: Are there package compatibility concerns between these parts?

A: All three components use the 0603 (1608 Metric) package format with identical height specifications (0.022" maximum seated height). RMCF0603FT1R30 has a length of 0.061" (1.55mm) compared to 0.063" (1.60mm) for the other parts. This 0.002" (0.05mm) difference is within standard PCB design tolerances and does not affect assembly or functionality.

Q: Which substitute should be selected for automotive applications?

A: Both KTR03EZPF1R30 and RMCF0603FT1R30 carry AEC-Q200 automotive certification. Either component is suitable for automotive applications. Selection between them depends on specific design requirements, supply availability, and manufacturer preference.

Q: Are all parts RoHS3 compliant?

A: Yes. RC1608F1R3CS, KTR03EZPF1R30, and RMCF0603FT1R30 are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What does the ±200ppm/°C temperature coefficient improvement mean?

A: Temperature coefficient defines how much the resistance value changes per degree Celsius across the operating temperature range. A lower absolute value (±200ppm/°C versus ±300ppm/°C) indicates better temperature stability. For a 1.3 Ohm resistor operating across a 210°C range (-55°C to 155°C), the improved coefficient reduces maximum resistance drift, supporting applications requiring tighter tolerance maintenance.