RC6432J512CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432J512CS is a 5.1 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 in active production status with 1132 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package type, dimensions, termination count) to ensure direct functional replacement in circuit applications.

Substiute Parts

RC6432J512CS

Samsung Electro-MechanicsIn Stock: 1223RC6432J512CS Datasheet

Current PartRFQ

RC2512JK-075K1L

YAGEOIn Stock: 3176RC2512JK-075K1L Datasheet

DirectRFQ

RC2512FK-075K1L

YAGEOIn Stock: 19646RC2512FK-075K1L Datasheet

UpgradeRFQ

CRM2512-FX-5101ELF

Bourns Inc.In Stock: 5130CRM2512-FX-5101ELF Datasheet

SimilarRFQ

ERJ-1TNF5101U

Panasonic Electronic ComponentsIn Stock: 7344ERJ-1TNF5101U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC6432J512CS are classified based on electrical and mechanical parameter alignment:

Direct Substitutes maintain identical resistance (5.1 kOhms), tolerance (±5%), power rating (1W), package (2512), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). These parts are pin-compatible and functionally equivalent for direct board-level replacement.

Upgrade Substitutes provide enhanced tolerance (±1% instead of ±5%) while maintaining all other electrical and mechanical specifications. These parts offer improved accuracy for applications requiring tighter resistance tolerances.

Similar Substitutes share the same resistance value, package, and operating temperature range but differ in power rating (2W instead of 1W) or feature set (current sense capability or automotive qualification). These parts are mechanically compatible but may have different thermal or application-specific characteristics.

The substitution logic is strictly based on: resistance value match, tolerance compatibility, power rating sufficiency, identical package type (2512), matching composition (thick film), equivalent temperature coefficient, overlapping operating temperature range, and two-terminal configuration.

Parameter Comparison

Engineering Selection Recommendations

RC2512JK-075K1L (YAGEO) is a direct substitute with identical electrical and mechanical specifications. Both parts maintain ±5% tolerance, 1W power rating, and moisture-resistant thick film composition. This part is actively produced with higher inventory availability (3080 units) and is suitable for applications requiring direct replacement without design modification.

RC2512FK-075K1L (YAGEO) functions as an upgrade substitute, offering ±1% tolerance instead of ±5% while maintaining all other parameters. This part is actively produced with the highest inventory level (19607 units) and is appropriate for applications where improved resistance accuracy is beneficial or required.

CRM2512-FX-5101ELF (Bourns Inc.) is a similar substitute with 2W power rating instead of 1W. This part is actively produced and suitable for applications where higher power dissipation capability is needed. The current sense feature indicates specialized application design; mechanical compatibility is confirmed through identical package and operating temperature range.

ERJ-1TNF5101U (Panasonic Electronic Components) is a similar substitute with automotive AEC-Q200 qualification. This part carries "Not For New Designs" status and should be used only in legacy or automotive-qualified applications where AEC-Q200 compliance is mandatory. Electrical and mechanical specifications match the main part except for tolerance (±1%).

For new designs, RC2512FK-075K1L (YAGEO) is recommended based on active production status, superior tolerance specification, and highest inventory availability. For direct replacement in existing designs, RC2512JK-075K1L (YAGEO) provides equivalent performance. Automotive applications requiring AEC-Q200 qualification should reference ERJ-1TNF5101U with awareness of its legacy status.

Frequently Asked Questions (FAQ)

Q: Can RC2512JK-075K1L directly replace RC6432J512CS without PCB modification?

A: Yes. Both parts share identical resistance (5.1 kOhms), tolerance (±5%), power rating (1W), package (2512), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Mechanical dimensions are within acceptable tolerance for standard PCB footprints. No design changes are required.

Q: What is the difference between RC2512FK-075K1L and RC2512JK-075K1L?

A: The primary difference is tolerance specification. RC2512FK-075K1L provides ±1% tolerance compared to ±5% for RC2512JK-075K1L. All other electrical and mechanical parameters are identical. RC2512FK-075K1L is suitable for applications requiring higher resistance accuracy.

Q: Can CRM2512-FX-5101ELF be used as a direct substitute?

A: CRM2512-FX-5101ELF is mechanically compatible (2512 package, identical dimensions, two terminations) and electrically compatible (5.1 kOhms, ±1% tolerance, -55°C ~ 155°C operating range). However, it provides 2W power rating instead of 1W and includes current sense features. It is suitable for replacement in applications where higher power dissipation is acceptable or beneficial.

Q: Why is ERJ-1TNF5101U marked "Not For New Designs"?

A: ERJ-1TNF5101U carries legacy product status from Panasonic Electronic Components. While electrically and mechanically compatible with RC6432J512CS, it should be used only in existing designs or applications requiring automotive AEC-Q200 qualification. New designs should specify RC2512FK-075K1L or RC2512JK-075K1L.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (RC2512JK-075K1L, RC2512FK-075K1L, CRM2512-FX-5101ELF, and ERJ-1TNF5101U) are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the compliance profile of RC6432J512CS.

Q: What is the significance of the 2512 package designation?

A: The 2512 package (6432 Metric) is a standardized surface-mount resistor footprint measuring 0.248" to 0.250" length by 0.122" to 0.126" width. All listed parts use this identical package, ensuring PCB footprint compatibility and interchangeability without layout modifications.

Q: Can tolerance differences affect circuit performance?

A: Tolerance differences (±5% versus ±1%) affect the maximum allowable resistance deviation from the nominal 5.1 kOhm value. Applications with strict resistance accuracy requirements should specify ±1% tolerance parts (RC2512FK-075K1L or ERJ-1TNF5101U). General-purpose applications typically accept ±5% tolerance.