MOS2CT52R392J Equivalent & Substitute Parts

Part Overview

The MOS2CT52R392J is a 3.9 kOhms ±5% 2W through-hole resistor manufactured by KOA Speer Electronics, Inc. This axial metal oxide film resistor features flame retardant coating and safety construction, designed for applications requiring reliable power dissipation in the 2-watt range. The part is currently active in production with 2263 pieces in stock inventory. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across different manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

MOS2CT52R392J

KOA Speer Electronics, Inc.In Stock: 2312MOS2CT52R392J Datasheet

Current PartRFQ

RSF200JB-73-3K9

YAGEOIn Stock: 12517RSF200JB-73-3K9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOS2CT52R392J is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Resistance value: 3.9 kOhms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 2W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

Acceptable Variation Parameters:

• Physical dimensions: Axial resistors exhibit dimensional variation within the axial package category; substitute parts may differ in diameter and length while maintaining functional compatibility
• Temperature coefficient: Variation permitted when not explicitly specified in substitute data
• Operating temperature range: Substitute parts with equal or extended temperature range are acceptable
• Protective coating type: Flame retardant and flame proof coatings are functionally equivalent for safety applications
• Packaging format: Cut tape and bulk packaging formats do not affect electrical or mechanical performance

The RSF200JB-73-3K9 manufactured by YAGEO meets all critical substitution parameters and is therefore a valid equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The RSF200JB-73-3K9 is a valid substitute for the MOS2CT52R392J based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical resistance (3.9 kOhms), tolerance (±5%), and power rating (2W), ensuring functional interchangeability in circuit applications.

Regulatory Compliance: Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Thermal Performance: The YAGEO substitute provides an extended operating temperature range (-55°C ~ 235°C) compared to the KOA Speer original (-55°C ~ 200°C), offering improved thermal margin in high-temperature applications.

Safety Construction: Both parts incorporate protective coatings (flame retardant and flame proof respectively) and are classified as safety components, maintaining equivalent safety performance.

Physical Compatibility Consideration: The substitute part exhibits larger axial dimensions (5.00mm diameter x 15.50mm length versus 4.00mm x 12.00mm). PCB layout and mechanical clearance must be verified before substitution to ensure physical fit within the target application.

Frequently Asked Questions (FAQ)

Q: Can the RSF200JB-73-3K9 be used as a direct replacement for the MOS2CT52R392J?

A: The RSF200JB-73-3K9 is electrically equivalent and functionally interchangeable for circuit performance. However, physical dimensions differ; the substitute is larger in both diameter and length. Mechanical fit within the PCB layout must be confirmed before substitution.

Q: What are the critical parameters that must match for substitution?

A: Resistance value (3.9 kOhms), tolerance (±5%), power rating (2W), composition (metal oxide film), package type (axial), and number of terminations (2) must be identical. These parameters determine functional equivalence.

Q: Does the difference in operating temperature range affect substitution suitability?

A: No. The substitute part's extended operating range (-55°C ~ 235°C) is acceptable and provides additional thermal margin. Substitution is valid when the substitute meets or exceeds the original specification.

Q: Are flame retardant and flame proof coatings functionally equivalent?

A: Yes. Both coating types provide safety protection and are functionally equivalent for applications requiring protective coatings. The specific coating type does not affect electrical performance or substitution validity.

Q: What impact does packaging format (cut tape versus bulk) have on substitution?

A: Packaging format does not affect electrical or mechanical performance. Cut tape and bulk packaging are logistical variations only and do not influence substitution compatibility.

Q: Must the physical dimensions match exactly for substitution?

A: No. Axial resistors exhibit dimensional variation within the package category. Substitute parts may differ in diameter and length while maintaining functional compatibility. However, PCB layout clearance must be verified to ensure physical fit.

Q: Are both parts currently in active production?

A: Yes. Both the MOS2CT52R392J and RSF200JB-73-3K9 are active products with current inventory availability, ensuring supply chain continuity for either selection.