RC5025F1782CS Equivalent & Substitute Parts

Part Overview

The RC5025F1782CS is a 17.8 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.667W (2/3W) power dissipation in a 2010 (5025 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant with moisture sensitivity level 1 (unlimited shelf life).

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications. The ERJ-12SF1782U from Panasonic Electronic Components serves as a direct functional equivalent, though it carries a "Not For New Designs" status and offers increased power rating of 0.75W (3/4W).

Substiute Parts

RC5025F1782CS

Samsung Electro-MechanicsIn Stock: 912RC5025F1782CS Datasheet

Current PartRFQ

ERJ-12SF1782U

Panasonic Electronic ComponentsIn Stock: 7864ERJ-12SF1782U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F1782CS is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Resistance value: 17.8 kOhms
• Tolerance: ±1%
• Package / Case: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Number of Terminations: 2

Allowable Variation Parameters:

• Power Rating: Substitute must equal or exceed 0.667W (2/3W)
• Physical height: Minor variations acceptable within component mounting constraints
• Moisture Sensitivity Level: Must be 1 (Unlimited) or equivalent
• RoHS Status: Must maintain ROHS3 compliance

The ERJ-12SF1782U qualifies as a substitute because it matches all mandatory parameters and exceeds the power rating requirement at 0.75W (3/4W), providing additional thermal margin. Both components share identical resistance, tolerance, package designation, composition, temperature coefficient, and operating temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

RC5025F1782CS (Primary Selection): The RC5025F1782CS maintains Active product status, indicating ongoing manufacturer support and availability for new design implementations. This component is the preferred choice for new development projects and applications requiring long-term supply assurance. Samsung Electro-Mechanics provides full manufacturing support and compliance documentation.

ERJ-12SF1782U (Substitute Selection): The ERJ-12SF1782U is classified as "Not For New Designs" by Panasonic Electronic Components. This designation indicates the product line is in mature or declining production phase. However, the component remains functionally equivalent and suitable for:

• Existing design revisions requiring component replacement
• Supply chain contingency situations
• Applications where existing inventory must be utilized
• Designs where the increased 0.75W power rating provides beneficial thermal margin

Both components maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard surface mount assembly processes and storage conditions. The negligible height difference (0.026" versus 0.028") presents no practical constraint for standard PCB assembly equipment.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF1782U be used as a direct replacement for RC5025F1782CS in existing designs?

A: Yes. Both components share identical electrical specifications (17.8 kOhms ±1%, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range), identical package designation (2010/5025 Metric), and identical physical footprint dimensions (0.197" L x 0.098" W). The ERJ-12SF1782U provides higher power rating (0.75W versus 0.667W), which is compatible with existing circuit requirements. The 0.002" height difference is within standard PCB assembly tolerances.

Q: Why is the ERJ-12SF1782U marked "Not For New Designs"?

A: This designation reflects Panasonic's product lifecycle management and indicates the component is not recommended for new development projects. However, it remains available for existing applications and supply contingencies. The "Not For New Designs" status does not affect electrical or mechanical compatibility with the RC5025F1782CS.

Q: Are there any compliance differences between these components?

A: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. No compliance differences exist. Both are suitable for standard surface mount assembly and storage without special handling requirements.

Q: What is the significance of the power rating difference (0.667W versus 0.75W)?

A: The ERJ-12SF1782U's higher power rating (0.75W) exceeds the RC5025F1782CS requirement (0.667W). This provides additional thermal margin and is fully compatible with circuit designs specified for the lower-rated component. No derating or circuit modification is required.

Q: Are the physical dimensions truly identical?

A: The length and width dimensions are identical (0.197" L x 0.098" W / 5.00mm x 2.50mm). The seated height differs by 0.002" (0.66mm versus 0.70mm), which is negligible for standard PCB assembly and does not affect component placement or clearance in typical circuit board designs.

Q: Can these components be mixed in the same production batch?

A: Yes. Both components are functionally equivalent and mechanically compatible. However, standard manufacturing practices typically maintain single-source component specifications per design revision to ensure traceability and consistency in production documentation.