RC6432J393CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432J393CS is a 39 kOhms ±5% 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 active in production with 990 pieces in stock. Equivalent and substitute parts are identified based on matching resistance value, package format, power rating, and operating temperature range to enable direct circuit board replacement or design optimization.

Substiute Parts

RC6432J393CS

Samsung Electro-MechanicsIn Stock: 1047RC6432J393CS Datasheet

Current PartRFQ

AC2512FK-0739KL

YAGEOIn Stock: 8982AC2512FK-0739KL Datasheet

UpgradeRFQ

RC2512FK-0739KL

YAGEOIn Stock: 8844RC2512FK-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 of the RC6432J393CS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 39 kOhms
• Package format: 2512 (6432 Metric)
• Operating temperature range: -55°C to 155°C
• Composition: Thick Film
• Number of terminations: 2

Allowable Variation Parameters:

• Tolerance: May be tighter (±1%) than the original ±5%
• Power rating: May be equal or higher than 1W
• Temperature coefficient: ±100ppm/°C (consistent across all parts)
• Compliance certifications: ROHS3, MSL 1 maintained across substitutes

Upgrade Classification: Parts with improved tolerance (±1%) and maintained or enhanced power rating qualify as upgrades.

Similar Classification: Parts with increased power rating (1.5W) or automotive-grade certifications (AEC-Q200) are classified as similar alternatives for enhanced performance applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Active Production): AC2512FK-0739KL and RC2512FK-0739KL are upgrade substitutes manufactured by YAGEO. Both maintain 1W power rating and 2512 package compatibility while improving tolerance to ±1%. Both parts are active in production with high inventory availability (8872 and 8767 pieces respectively). These parts are suitable for applications requiring tighter resistance tolerance without design modification.

For Enhanced Performance Applications: CRCW251239K0FKEGHP (Vishay Dale) provides increased power rating of 1.5W with ±1% tolerance and AEC-Q200 automotive qualification. This part is suitable for applications requiring higher power dissipation capability or automotive-grade reliability. Inventory availability is 1230 pieces.

For Legacy or Automotive-Qualified Designs: ERJ-1TNF3902U (Panasonic Electronic Components) carries AEC-Q200 automotive certification and ±1% tolerance with 1W power rating. This part is marked "Not For New Designs" and should be used only in existing designs requiring automotive qualification or legacy component compatibility. Inventory is 3980 pieces.

Compliance Verification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and -55°C to 155°C operating temperature range. No additional compliance verification is required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can AC2512FK-0739KL replace RC6432J393CS in existing designs? A: Yes. AC2512FK-0739KL is a direct mechanical and electrical substitute with identical 2512 package, 1W power rating, and -55°C to 155°C operating temperature. The improved ±1% tolerance provides better circuit performance without design changes.

Q: What is the difference between AC2512FK-0739KL and RC2512FK-0739KL? A: Both are YAGEO 39 kOhms ±1% 1W 2512 resistors with identical electrical specifications. AC2512FK-0739KL includes AEC-Q200 automotive qualification; RC2512FK-0739KL does not. Selection depends on automotive requirement.

Q: Why is CRCW251239K0FKEGHP rated at 1.5W instead of 1W? A: CRCW251239K0FKEGHP is a higher-power variant suitable for applications requiring increased power dissipation. The 1.5W rating is an upgrade parameter; it does not prevent substitution in 1W applications.

Q: Can ERJ-1TNF3902U be used in new designs? A: ERJ-1TNF3902U is marked "Not For New Designs." It is suitable only for maintaining existing designs or applications requiring legacy component compatibility. For new designs, use AC2512FK-0739KL or RC2512FK-0739KL.

Q: Are all substitute parts available in Tape & Reel packaging? A: AC2512FK-0739KL, RC2512FK-0739KL, CRCW251239K0FKEGHP, and ERJ-1TNF3902U are all supplied in Tape & Reel (TR) packaging. The original RC6432J393CS is supplied in standard packaging format.

Q: Do substitute parts maintain the same physical dimensions? A: All parts use the 2512 (6432 Metric) package with dimensions within 0.248" to 0.252" length and 0.122" to 0.126" width. Height variation ranges from 0.026" to 0.028" seated maximum. These dimensional tolerances are within standard PCB pad specifications for 2512 components.

Q: What is the inventory status for each substitute? A: AC2512FK-0739KL: 8872 pieces; RC2512FK-0739KL: 8767 pieces; CRCW251239K0FKEGHP: 1230 pieces; ERJ-1TNF3902U: 3980 pieces. Original RC6432J393CS: 990 pieces.