ERJ-S1DF1873U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF1873U is a 187 kOhms ±1% 0.75W chip resistor in 2010 (5025 Metric) package manufactured by Panasonic Electronic Components. This thick film resistor features anti-sulfur coating and AEC-Q200 automotive qualification, designed for high-reliability applications in automotive and industrial environments. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require alternative qualified sources. The ERJ-S1DF1873U has documented substitute options that maintain electrical and mechanical compatibility while meeting automotive qualification requirements.

Substiute Parts

ERJ-S1DF1873U

Panasonic Electronic ComponentsIn Stock: 923ERJ-S1DF1873U Datasheet

Current PartRFQ

ERJ-12SF1873U

Panasonic Electronic ComponentsIn Stock: 10903ERJ-12SF1873U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1DF1873U is determined by strict equivalence across the following parameters:

• Resistance value: 187 kOhms
• Tolerance: ±1%
• Power rating: 0.75W
• Package: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• AEC-Q200 automotive qualification
• Number of terminations: 2
• Moisture sensitivity level: 1

The ERJ-12SF1873U qualifies as a direct electrical and mechanical substitute, meeting all core parameter requirements. This part maintains identical resistance, tolerance, power rating, package dimensions, and automotive qualification. Differences in product status and compliance certifications do not affect functional substitutability in applications where the ERJ-S1DF1873U is specified.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S1DF1873U is the preferred selection for new designs due to its active product status and ROHS3 compliance. This part provides the most current manufacturing process and longest lifecycle support from Panasonic Electronic Components.

The ERJ-12SF1873U serves as a functional substitute for existing designs or applications where RoHS compliance is not a requirement. This part is designated "Not For New Designs" and carries RoHS non-compliant status, indicating it represents an earlier product generation. However, it maintains full electrical and mechanical equivalence with identical resistance, tolerance, power rating, package dimensions, and AEC-Q200 automotive qualification.

Selection between these parts depends on design phase and regulatory requirements. For new automotive designs subject to RoHS regulations, the ERJ-S1DF1873U is the appropriate choice. For legacy system maintenance or applications without RoHS mandates, the ERJ-12SF1873U provides equivalent performance.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF1873U be used as a direct replacement for ERJ-S1DF1873U in automotive applications?

A: Yes. Both parts meet AEC-Q200 automotive qualification and share identical electrical parameters (187 kOhms ±1%, 0.75W) and mechanical specifications (2010 package, ±100ppm/°C temperature coefficient, -55°C ~ 155°C operating range). The primary difference is product lifecycle status and RoHS compliance, not functional performance.

Q: What is the significance of the "Not For New Designs" status on ERJ-12SF1873U?

A: This designation indicates the part is in mature or declining production phase. Panasonic recommends using ERJ-S1DF1873U for new designs to ensure long-term availability and support. Existing designs using ERJ-12SF1873U remain fully functional.

Q: Are there package compatibility concerns when substituting between these parts?

A: No. Both parts use identical 2010 (5025 Metric) package with matching dimensions (0.197" L x 0.098" W, 0.028" max height) and two terminations. PCB footprints and assembly processes are fully compatible.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical characteristics. Both parts deliver identical resistance, tolerance, temperature coefficient, and power rating performance.

Q: What is the moisture sensitivity implication for both parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage practices apply without special desiccant or baking requirements.