RC0603J112CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603J112CS is a 1.1 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for moisture-resistant applications across industrial and consumer electronics. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance can be achieved through alternative tolerance specifications or packaging formats while maintaining the same resistance value, power rating, and physical dimensions.

Substiute Parts

RC0603J112CS

Samsung Electro-MechanicsIn Stock: 1193RC0603J112CS Datasheet

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RC0603F112CS

Samsung Electro-MechanicsIn Stock: 7243RC0603F112CS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC0603J112CS is based on the following criteria:

Electrical Equivalence: All substitute parts must maintain the 1.1 kOhms resistance value and 0.05W power rating. Tolerance specifications may be tighter (lower percentage) than the original ±5%, as this represents improved precision without compromising circuit function.

Physical Compatibility: The 0201 (0603 Metric) package dimension (0.024" L x 0.012" W / 0.60mm x 0.30mm) is mandatory for PCB footprint compatibility. Height variations within the specified maximum of 0.010" (0.25mm) are acceptable.

Environmental & Compliance Requirements: All substitutes must maintain thick film composition, support the -55°C ~ 125°C operating temperature range, achieve ROHS3 compliance, and maintain MSL 1 rating for moisture resistance.

Packaging Format: While the main part is supplied in Tape & Reel (TR) format, substitutes may be available in alternative packaging (Cut Tape, bulk) without affecting electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

RC0603F112CS qualifies as a direct substitute for RC0603J112CS based on the following engineering criteria:

Electrical Performance: Both parts deliver identical 1.1 kOhms resistance and 0.05W power dissipation. The RC0603F112CS provides ±1% tolerance, which is superior to the ±5% specification of the main part. This tighter tolerance does not introduce incompatibility; it represents enhanced precision suitable for applications requiring stricter component matching.

Physical Compatibility: Dimensional specifications are equivalent. The maximum seated height of 0.26mm for the substitute versus 0.25mm for the main part represents a negligible 0.01mm variance within acceptable PCB assembly tolerances.

Regulatory & Compliance Alignment: Both parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature range (-55°C ~ 125°C). Temperature coefficient performance is identical at ±250ppm/°C.

Product Status & Availability: Both parts carry Active product status from Samsung Electro-Mechanics, ensuring continued supply and support.

Packaging Consideration: The substitute is available in Cut Tape (CT) format versus Tape & Reel (TR) for the main part. This difference affects procurement and assembly logistics but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can RC0603F112CS replace RC0603J112CS in existing designs without PCB modification?

A: Yes. Both parts share identical 0201 (0603 Metric) package dimensions and footprints. No PCB layout changes are required. The negligible height difference (0.01mm) is within standard assembly tolerances.

Q: What is the practical difference between ±5% and ±1% tolerance?

A: The RC0603F112CS ±1% tolerance means the actual resistance will fall between 1.089 kOhms and 1.111 kOhms, compared to 1.045 kOhms to 1.155 kOhms for the ±5% part. The substitute provides tighter component matching, beneficial for precision circuits. In applications where ±5% tolerance is sufficient, both parts perform identically.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts maintain identical power ratings (0.05W), temperature coefficients (±250ppm/°C), and operating ranges (-55°C ~ 125°C). Thermal performance and long-term reliability are equivalent.

Q: Does the packaging format change (Tape & Reel to Cut Tape) affect component quality?

A: No. Packaging format affects supply chain logistics and assembly processes but does not alter electrical properties, moisture resistance, or compliance status. Both formats maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC0603J112CS and RC0603F112CS are ROHS3 compliant with identical regulatory status, ensuring compatibility with current environmental and procurement standards.

Q: Can the substitute be used in high-precision applications?

A: Yes. The ±1% tolerance of RC0603F112CS makes it suitable for applications requiring tighter component matching than the original ±5% specification provides.