RC6432F3740CS Equivalent & Substitute Parts

Part Overview

The RC6432F3740CS is a 374 Ohm ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant. The part is currently in active production status with 742 units in stock.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the main part. The ERJ-1TNF3740U from Panasonic Electronic Components provides functional equivalence, though with different product status and packaging configuration.

Substiute Parts

RC6432F3740CS

Samsung Electro-MechanicsIn Stock: 802RC6432F3740CS Datasheet

Current PartRFQ

ERJ-1TNF3740U

Panasonic Electronic ComponentsIn Stock: 1893ERJ-1TNF3740U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F3740CS is determined by strict alignment of the following parameters:

Electrical Parameters (Critical):

• Resistance value: 374 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Critical):

• Package type: 2512 (6432 Metric)
• Number of terminations: 2
• Composition: Thick Film

Compliance Parameters:

• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH status: REACH Unaffected

The ERJ-1TNF3740U meets all critical electrical and mechanical parameters. Dimensional variations (length 6.40mm vs. 6.30mm; height 0.70mm vs. 0.66mm) remain within acceptable tolerances for 2512 package specifications. The substitute carries AEC-Q200 automotive qualification, which exceeds standard requirements. Product status differs: the main part is Active, while the substitute is Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Applications: The RC6432F3740CS (Samsung Electro-Mechanics) is the primary selection. This part maintains Active product status, ensuring long-term availability and manufacturing continuity. It is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

For Legacy or Discontinued Product Support: The ERJ-1TNF3740U (Panasonic Electronic Components) serves as a functional equivalent. Although marked as Not For New Designs, it satisfies all critical electrical and mechanical parameters. The part carries AEC-Q200 automotive qualification, providing additional reliability assurance. Packaging is supplied as Tape & Reel (TR), which may require adjustment in assembly processes compared to the main part's standard packaging.

Compliance Considerations: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. No additional regulatory barriers exist for substitution in standard applications.

Dimensional Compatibility: Length and height variations between parts (0.10mm and 0.04mm respectively) fall within standard PCB layout tolerances for 2512 package components. No design modifications are required for mechanical accommodation.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF3740U replace RC6432F3740CS in new designs?

A: The ERJ-1TNF3740U meets all electrical and mechanical specifications for functional equivalence. However, it carries Not For New Designs status. For new production, the RC6432F3740CS is the appropriate selection due to its Active product status.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution requires matching resistance (374 Ohms), tolerance (±1%), power rating (1W), package type (2512), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Compliance certifications (ROHS3, MSL 1) must also align.

Q: Are there dimensional differences between these parts?

A: Yes. The ERJ-1TNF3740U is 6.40mm long and 0.70mm tall (seated), compared to 6.30mm and 0.66mm for the RC6432F3740CS. These differences are within standard 2512 package tolerances and do not affect PCB layout or assembly.

Q: What does "Not For New Designs" mean for the Panasonic part?

A: This status indicates the manufacturer is not recommending the ERJ-1TNF3740U for new product development. It remains available for legacy system support and replacement applications. For new designs, select the RC6432F3740CS.

Q: Does packaging format affect substitution?

A: The ERJ-1TNF3740U is supplied in Tape & Reel (TR) format, while the main part uses standard packaging. This affects handling and assembly processes but does not impact electrical or mechanical performance. Verify your assembly equipment compatibility with TR packaging.

Q: Are both parts automotive-qualified?

A: The RC6432F3740CS carries standard industrial specifications. The ERJ-1TNF3740U includes AEC-Q200 automotive qualification, which exceeds standard requirements and provides additional reliability assurance for demanding applications.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. Both parts can be stored indefinitely under normal conditions without special handling or reflow preparation.