RC6432F1581CS Equivalent & Substitute Parts

Part Overview

The RC6432F1581CS is a 1.58 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. The part is currently in active production status with 949 units available in inventory.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative qualified sources. The RC6432F1581CS has been identified with one direct electrical and mechanical equivalent: the ERJ-1TNF1581U from Panasonic Electronic Components.

Substiute Parts

RC6432F1581CS

Samsung Electro-MechanicsIn Stock: 1006RC6432F1581CS Datasheet

Current PartRFQ

ERJ-1TNF1581U

Panasonic Electronic ComponentsIn Stock: 3976ERJ-1TNF1581U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC6432F1581CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 1.58 kOhms
• Tolerance: ±1%
• Power rating: 1W
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C

Mechanical Parameters:

• Package format: 2512 (6432 Metric)
• Number of terminations: 2
• Physical dimensions compatible with 2512 footprint

Compliance Parameters:

• RoHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)

The ERJ-1TNF1581U from Panasonic meets all electrical and mechanical requirements for direct substitution. This part maintains identical resistance, tolerance, power rating, and temperature specifications while utilizing the same 2512 package footprint. Both components are thick film resistors with equivalent thermal and environmental performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

RC6432F1581CS (Samsung Electro-Mechanics): This component is the primary selection for new designs. The part maintains active production status with established supply availability. It is ROHS3 compliant and carries unlimited moisture sensitivity rating, suitable for standard industrial and commercial applications.

ERJ-1TNF1581U (Panasonic Electronic Components): This substitute part provides electrical and mechanical equivalence with identical resistance, tolerance, power rating, and temperature specifications. The component is qualified to AEC-Q200 automotive standards, indicating enhanced reliability screening. However, the part carries a "Not For New Designs" status, restricting its use to legacy system support, design refresh cycles, or supply contingency scenarios where the primary part becomes unavailable. The marginal dimensional variance (0.252" vs 0.248" length; 0.028" vs 0.026" height) remains within standard 2512 package tolerances and does not affect PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF1581U be used as a direct replacement for RC6432F1581CS in new product designs?

A: No. While the ERJ-1TNF1581U meets all electrical and mechanical specifications, its "Not For New Designs" status restricts application to legacy support and supply contingency use only. The RC6432F1581CS is the appropriate selection for new designs.

Q: Are there dimensional differences between these two parts?

A: Minor dimensional variations exist. The RC6432F1581CS measures 0.248" L x 0.126" W (6.30mm x 3.20mm) with a maximum seated height of 0.026" (0.66mm). The ERJ-1TNF1581U measures 0.252" L x 0.126" W (6.40mm x 3.20mm) with a maximum seated height of 0.028" (0.70mm). Both dimensions fall within standard 2512 package tolerances and are compatible with the same PCB footprint.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the RC6432F1581CS and ERJ-1TNF1581U are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both carry REACH Unaffected status and EAR99 ECCN classification.

Q: What is the difference in product status between these parts?

A: The RC6432F1581CS is in active production, ensuring ongoing availability for current designs. The ERJ-1TNF1581U is designated "Not For New Designs," indicating Panasonic has restricted this part to legacy applications and does not recommend it for new product development.

Q: Are the electrical characteristics identical?

A: Yes. Both parts provide 1.58 kOhms resistance at ±1% tolerance with 1W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating temperature range. Thick film composition and two-termination configuration are identical.

Q: What packaging formats are available?

A: The RC6432F1581CS is supplied in standard packaging format. The ERJ-1TNF1581U is available in Tape & Reel (TR) format, which may influence procurement decisions based on volume requirements and handling specifications.