RC6432F393CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F393CS is a 39 kOhms ±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 with MSL 1 rating. The part is currently in active production status. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient) and mechanical compatibility (package type, physical dimensions, termination count).

Substiute Parts

RC6432F393CS

Samsung Electro-MechanicsIn Stock: 1031RC6432F393CS Datasheet

Current PartRFQ

RC2512FK-0739KL

YAGEOIn Stock: 8844RC2512FK-0739KL Datasheet

DirectRFQ

AC2512FK-0739KL

YAGEOIn Stock: 8982AC2512FK-0739KL Datasheet

UpgradeRFQ

CRCW251239K0FKEGHP

Vishay DaleIn Stock: 1332CRCW251239K0FKEGHP Datasheet

SimilarRFQ

ERJ-1TNF3902U

Panasonic Electronic ComponentsIn Stock: 4067ERJ-1TNF3902U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Mandatory Matching Parameters:

• Resistance value: 39 kOhms
• Tolerance: ±1%
• Package / Case: 2512 (6432 Metric)
• Number of Terminations: 2
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Composition: Thick Film
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Power Rating: 1W (main part) to 1.5W (substitute acceptable; higher rating provides margin)
• Physical Dimensions: Minor variations within package tolerance (±0.002" to ±0.004")
• Height - Seated: Variations up to 0.002" acceptable within 2512 package specification
• Product Status: Active preferred; Not For New Designs acceptable for legacy applications
• Features: Additional certifications (AEC-Q200, Pulse Withstanding) do not disqualify substitution

Substitution Categories:

Direct Equivalent: RC2512FK-0739KL (YAGEO) — Identical electrical and mechanical specifications; same 1W power rating; active production status.

Upgrade Equivalent: AC2512FK-0739KL (YAGEO) — Adds AEC-Q200 automotive qualification; maintains all core specifications; same 1W power rating; active production status.

Higher Power Variant: CRCW251239K0FKEGHP (Vishay Dale) — Increases power rating to 1.5W; adds AEC-Q200 and Pulse Withstanding features; minor dimensional variations within tolerance; active production status.

Legacy Equivalent: ERJ-1TNF3902U (Panasonic Electronic Components) — Matches all core specifications; includes AEC-Q200; marked Not For New Designs; acceptable for replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

For Standard Industrial Applications: Select RC2512FK-0739KL (YAGEO) as the primary substitute. This part maintains identical electrical specifications and 1W power rating as the original RC6432F393CS. Both parts are in active production with ROHS3 compliance and MSL 1 rating. Dimensional variations are within 2512 package tolerance and do not affect PCB layout or thermal performance.

For Automotive or High-Reliability Applications: Select AC2512FK-0739KL (YAGEO) as the preferred substitute. This part adds AEC-Q200 automotive qualification while maintaining all core electrical and mechanical specifications of the original part. Active production status and ROHS3 compliance ensure supply chain continuity and regulatory alignment.

For Applications Requiring Enhanced Thermal Margin: Select CRCW251239K0FKEGHP (Vishay Dale) when circuit design permits 1.5W power rating. This part provides 50% additional power dissipation capability and includes both AEC-Q200 and Pulse Withstanding features. Dimensional variations remain within 2512 package specification. Higher power rating does not degrade performance in 1W applications.

For Legacy System Maintenance: ERJ-1TNF3902U (Panasonic Electronic Components) is acceptable for replacement in existing designs. Although marked Not For New Designs, this part meets all electrical and mechanical requirements. Use only when supply of active-status alternatives is constrained or when maintaining design consistency with existing inventory is required.

Frequently Asked Questions (FAQ)

Q: Can RC2512FK-0739KL be used as a direct replacement for RC6432F393CS?

A: Yes. Both parts share identical resistance (39 kOhms), tolerance (±1%), power rating (1W), package (2512), temperature coefficient (±100ppm/°C), operating range (-55°C to 155°C), and compliance status (ROHS3, MSL 1). Dimensional variations are within 2512 package tolerance and do not affect circuit performance or PCB layout.

Q: What is the difference between RC2512FK-0739KL and AC2512FK-0739KL?

A: AC2512FK-0739KL adds AEC-Q200 automotive qualification and is designated for automotive applications. All electrical specifications, power rating, package type, and physical dimensions remain identical. AC2512FK-0739KL is suitable for both automotive and industrial applications; RC2512FK-0739KL is suitable for industrial applications.

Q: Why is CRCW251239K0FKEGHP rated at 1.5W instead of 1W?

A: CRCW251239K0FKEGHP is manufactured with enhanced thermal characteristics to support 1.5W continuous power dissipation. In circuits designed for 1W operation, the higher power rating provides thermal margin and does not affect electrical performance. All other specifications (resistance, tolerance, temperature coefficient, operating range) remain equivalent.

Q: Can ERJ-1TNF3902U be used in new designs?

A: ERJ-1TNF3902U is marked Not For New Designs by Panasonic Electronic Components. This designation indicates the manufacturer is not actively promoting this part for new applications. For new designs, select RC2512FK-0739KL, AC2512FK-0739KL, or CRCW251239K0FKEGHP, all of which are in active production status.

Q: Are there any dimensional concerns when substituting these parts?

A: All substitute parts conform to the 2512 (6432 Metric) package specification. Length variations range from 0.248" to 0.252" (6.30mm to 6.40mm); width variations range from 0.122" to 0.126" (3.10mm to 3.20mm); height variations range from 0.026" to 0.028" (0.65mm to 0.70mm). These variations are within standard 2512 package tolerance and do not require PCB layout modification.

Q: What is the significance of Moisture Sensitivity Level 1?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These parts do not require special moisture-controlled storage, desiccant packaging, or bake-out procedures before soldering. Standard handling and storage practices are sufficient.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RC2512FK-0739KL, AC2512FK-0739KL, CRCW251239K0FKEGHP, and ERJ-1TNF3902U are all ROHS3 compliant. This ensures compatibility with regulatory requirements in EU, China, and other regions with RoHS directives.

Q: Which substitute part should be selected for cost optimization?

A: RC2512FK-0739KL (YAGEO) typically offers the most cost-effective substitution while maintaining full electrical and mechanical equivalence. AC2512FK-0739KL adds automotive qualification at a modest cost premium. CRCW251239K0FKEGHP commands a higher price due to enhanced power rating and Pulse Withstanding feature.