RC6432F1242CS Equivalent & Substitute Parts

Part Overview

The RC6432F1242CS is a 12.4 kOhms ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package format. This thick film, moisture-resistant component operates across a temperature range of -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently in active production status with 1,108 units available in inventory. Substitute parts are necessary when the primary manufacturer part becomes unavailable, when design requirements mandate specific certifications such as automotive qualification, or when alternative packaging formats are required for production optimization.

Substiute Parts

RC6432F1242CS

Samsung Electro-MechanicsIn Stock: 1132RC6432F1242CS Datasheet

Current PartRFQ

ERJ-1TNF1242U

Panasonic Electronic ComponentsIn Stock: 4067ERJ-1TNF1242U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F1242CS is determined by strict equivalence across the following critical parameters: resistance value (12.4 kOhms), tolerance (±1%), power rating (1W), package format (2512/6432 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, MSL 1). The substitute part ERJ-1TNF1242U meets all electrical and mechanical specifications required for direct substitution. Physical dimensions show minor variations within acceptable tolerances for the 2512 package standard. The primary distinction between the main part and substitute relates to product status and specific feature certifications rather than core electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The RC6432F1242CS is the primary selection for new designs due to its active product status and unrestricted design lifecycle. The ERJ-1TNF1242U substitute from Panasonic meets all electrical and mechanical equivalence criteria and is suitable for applications requiring automotive-grade qualification through AEC-Q200 certification. However, the ERJ-1TNF1242U carries a "Not For New Designs" status, restricting its use to legacy system support, design refresh cycles, or applications where automotive qualification is a mandatory requirement. Selection between these parts should be based on design phase (new versus existing), application environment (automotive versus general industrial), and supply chain availability. Both parts satisfy ROHS3 compliance and MSL 1 moisture sensitivity requirements. Physical dimension variations (length 6.30mm versus 6.40mm, height 0.66mm versus 0.70mm) are within standard 2512 package tolerances and do not affect PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF1242U be used as a direct replacement for RC6432F1242CS in existing designs?

A: Yes. The ERJ-1TNF1242U meets all electrical specifications (12.4 kOhms ±1%, 1W, ±100ppm/°C, -55°C to 155°C) and mechanical requirements (2512 package, 2 terminations). Physical dimensions vary slightly within acceptable 2512 package tolerances. The substitute is electrically and mechanically compatible for direct board-level substitution.

Q: Why is ERJ-1TNF1242U marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production phase. Panasonic recommends this part only for legacy system support and existing design maintenance. New product development should prioritize the RC6432F1242CS or evaluate alternative active-status components from the ERJ-1TN series.

Q: What is the significance of AEC-Q200 certification on the ERJ-1TNF1242U?

A: AEC-Q200 is an automotive industry qualification standard. This certification indicates the ERJ-1TNF1242U has undergone rigorous testing for automotive applications. Selection of this part is appropriate when designs require automotive-grade component qualification. The RC6432F1242CS does not carry this certification.

Q: Are there packaging differences between these parts?

A: The RC6432F1242CS is supplied in standard packaging format. The ERJ-1TNF1242U is supplied in Tape & Reel (TR) format. Both use the 2512 (6432 Metric) package case. Tape & Reel packaging is optimized for automated assembly processes, while standard packaging may be used for manual or mixed-volume production.

Q: Do both parts meet RoHS and REACH compliance requirements?

A: Yes. Both RC6432F1242CS and ERJ-1TNF1242U are ROHS3 compliant and REACH unaffected. Both carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control measures are required during storage or handling.

Q: What are the physical dimension tolerances for the 2512 package?

A: The RC6432F1242CS measures 6.30mm length × 3.20mm width with 0.66mm maximum seated height. The ERJ-1TNF1242U measures 6.40mm length × 3.20mm width with 0.70mm maximum seated height. These variations (0.10mm length, 0.04mm height) are within standard 2512 package specifications and do not affect PCB footprint compatibility or assembly processes.