RC6432J392CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432J392CS is a 3.9 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 1009 units in stock. Equivalent and substitute parts are identified for applications requiring direct functional replacement or upgraded performance specifications.

Key Parameters

Parameter	Value
Resistance	3.9 kOhms
Tolerance	±5%
Power Rating	1W
Package / Case	2512 (6432 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: resistance value (3.9 kOhms), package type (2512/6432 Metric), power rating (1W), composition (thick film), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, MSL 1). Tolerance variations (±5% vs ±1%) and feature differences (moisture resistant vs automotive AEC-Q200) define substitution categories.

Direct Equivalent (Same Tolerance): RC2512JK-073K9L maintains identical electrical specifications with ±5% tolerance.

Upgraded Tolerance (Tighter Specification): RC2512FK-073K9L and RMCF2512FT3K90 provide ±1% tolerance for applications requiring improved accuracy.

Automotive-Qualified Alternative: ERJ-1TNF3901U and RMCF2512FT3K90 include AEC-Q200 certification for automotive applications, though ERJ-1TNF3901U is marked "Not For New Designs."

Parameter Comparison

Parameter	RC6432J392CS (Main)	RC2512JK-073K9L	RC2512FK-073K9L	ERJ-1TNF3901U	RMCF2512FT3K90
Manufacturer	Samsung Electro-Mechanics	YAGEO	YAGEO	Panasonic Electronic Components	Stackpole Electronics Inc
Resistance	3.9 kOhms	3.9 kOhms	3.9 kOhms	3.9 kOhms	3.9 kOhms
Tolerance	±5%	±5%	±1%	±1%	±1%
Power Rating	1W	1W	1W	1W	1W
Package / Case	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Not For New Designs	Active
Automotive Rating	None	None	None	AEC-Q200	AEC-Q200

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance): RC2512JK-073K9L by YAGEO is the primary equivalent, maintaining ±5% tolerance specification with active product status and 5075 units available in stock.

For Improved Tolerance Applications: RC2512FK-073K9L (YAGEO) or RMCF2512FT3K90 (Stackpole Electronics Inc) are suitable when ±1% tolerance is required. Both are active products with substantial inventory (10419 and 8814 units respectively).

For Automotive Applications: RMCF2512FT3K90 is the recommended choice, offering AEC-Q200 certification with active product status. ERJ-1TNF3901U provides automotive qualification but carries "Not For New Designs" status and should not be selected for new circuit designs.

All substitute parts maintain identical package dimensions (2512/6432 Metric), thermal characteristics (±100ppm/°C, -55°C ~ 155°C), and compliance certifications (ROHS3, MSL 1), ensuring direct PCB compatibility and functional interchangeability within specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can RC2512JK-073K9L replace RC6432J392CS in existing designs?

A: Yes. RC2512JK-073K9L maintains identical resistance (3.9 kOhms), tolerance (±5%), power rating (1W), package (2512), and operating temperature range (-55°C ~ 155°C). Physical dimensions are within tolerance (6.35mm x 3.10mm vs 6.30mm x 3.20mm), and both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between the ±5% and ±1% tolerance options?

A: RC6432J392CS and RC2512JK-073K9L specify ±5% tolerance, meaning resistance values fall within 3.705 kOhms to 4.095 kOhms. RC2512FK-073K9L and RMCF2512FT3K90 specify ±1% tolerance, constraining values to 3.861 kOhms to 3.939 kOhms. Applications requiring tighter resistance control should use ±1% parts.

Q: Are automotive-rated parts suitable for non-automotive applications?

A: Yes. RMCF2512FT3K90 and ERJ-1TNF3901U exceed standard requirements through AEC-Q200 qualification. They are functionally compatible with non-automotive circuits and provide enhanced reliability margins. However, ERJ-1TNF3901U is marked "Not For New Designs" and should not be selected for new development.

Q: Do all substitute parts have identical physical dimensions?

A: Dimensions are within specification tolerance. RC6432J392CS measures 6.30mm x 3.20mm (height 0.66mm). RC2512JK-073K9L measures 6.35mm x 3.10mm (height 0.65mm). ERJ-1TNF3901U and RMCF2512FT3K90 measure 6.40mm x 3.20mm and 6.30mm x 3.20mm respectively (height 0.70mm and 0.70mm). All fit standard 2512 package footprints.

Q: Which substitute offers the best inventory availability?

A: ERJ-1TNF3901U has the highest stock level at 38121 units. However, this part is marked "Not For New Designs." For active products, RC2512FK-073K9L offers 10419 units, followed by RC2512JK-073K9L with 5075 units and RMCF2512FT3K90 with 8814 units.

Q: Are all parts ROHS3 compliant and MSL 1 rated?

A: Yes. All listed parts (RC6432J392CS, RC2512JK-073K9L, RC2512FK-073K9L, ERJ-1TNF3901U, and RMCF2512FT3K90) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring equivalent environmental and handling requirements.

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