ERJ-S1DF2052U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF2052U is a 20.5 kOhms ±1% thick film chip resistor rated at 0.75W in a 2010 (5025 Metric) package. This component is manufactured by Panasonic Electronic Components and is designed for automotive applications with AEC-Q200 qualification and anti-sulfur protection. The part is currently in active production status with 930 units available in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require components with equivalent electrical and mechanical characteristics. The ERJ-12SF2052U represents a direct functional equivalent with identical electrical specifications and package dimensions, though it carries a "Not For New Designs" status.

Substiute Parts

ERJ-S1DF2052U

Panasonic Electronic ComponentsIn Stock: 947ERJ-S1DF2052U Datasheet

Current PartRFQ

ERJ-12SF2052U

Panasonic Electronic ComponentsIn Stock: 8492ERJ-12SF2052U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1DF2052U is determined by strict equivalence across the following parameters:

• Resistance value: 20.5 kOhms
• Tolerance: ±1%
• Power rating: 0.75W
• Package type: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant

The ERJ-12SF2052U meets all these criteria and is classified as a direct substitute. Additional cross-references listed in the ERJ-12SF2052U documentation (CRCW201020K5FKTF, AC2010FK-0720K5L, RMCF2010FT20K5, RMCP2010FT20K5, CRCW201020K5FKEF) represent alternative manufacturers' equivalents with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S1DF2052U is the preferred selection for new designs due to its active production status and anti-sulfur feature. This component carries full AEC-Q200 automotive qualification and ROHS3 compliance, making it suitable for automotive and industrial applications requiring environmental protection.

The ERJ-12SF2052U is electrically and mechanically identical but carries a "Not For New Designs" designation. This part remains available with higher inventory (8406 units) and may be used for legacy system maintenance, repair, or replacement scenarios where design revision is not required.

Both parts are suitable for applications operating within the -55°C to 155°C temperature range and maintain ±1% tolerance across the specified operating conditions. The 2010 package footprint is identical, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF2052U be used as a direct replacement for ERJ-S1DF2052U in new designs?

A: No. The ERJ-12SF2052U carries a "Not For New Designs" status. For new designs, the ERJ-S1DF2052U is the specified component. The ERJ-12SF2052U is suitable only for legacy system maintenance or repair applications.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both parts have identical resistance (20.5 kOhms), tolerance (±1%), power rating (0.75W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C).

Q: Do these parts have the same PCB footprint?

A: Yes. Both parts use the 2010 (5025 Metric) package with identical dimensions (0.197" L x 0.098" W / 5.00mm x 2.50mm) and maximum seated height (0.028" / 0.70mm). No PCB layout changes are required for substitution.

Q: What is the difference between ERJ-S1DF2052U and ERJ-12SF2052U?

A: The primary difference is product status and anti-sulfur protection. The ERJ-S1DF2052U is active production with anti-sulfur protection, while the ERJ-12SF2052U is not recommended for new designs. Both meet AEC-Q200 automotive qualification and ROHS3 compliance.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 qualification and are rated for automotive use across the -55°C to 155°C operating temperature range.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.