MOS2CT52R120J Equivalent & Substitute Parts

Part Overview

The MOS2CT52R120J is a 12 Ohm, 2W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This metal oxide film resistor features flame retardant coating and safety construction, designed for applications requiring reliable fixed resistance in the 2W power range. The part is currently Active in product status with 2513 pieces available in inventory. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

MOS2CT52R120J

KOA Speer Electronics, Inc.In Stock: 2574MOS2CT52R120J Datasheet

Current PartRFQ

RSF200JB-73-12R

YAGEOIn Stock: 5759RSF200JB-73-12R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOS2CT52R120J is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 12 Ohms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Metal Oxide Film

Mechanical Parameters:

• Package configuration: Axial through-hole
• Number of terminations: 2

Environmental & Compliance Parameters:

• RoHS3 compliance
• Operating temperature range compatibility
• REACH unaffected status
• ECCN and HTSUS classification alignment

The substitute part RSF200JB-73-12R meets all critical electrical and mechanical requirements. Physical dimensions differ slightly (0.197" Dia x 0.610" L versus 0.157" Dia x 0.472" L), and the operating temperature maximum extends to 235°C compared to 200°C for the primary part. These dimensional and thermal differences do not preclude substitution in applications where the primary part specifications are met or exceeded.

Parameter Comparison

Engineering Selection Recommendations

Both the MOS2CT52R120J and RSF200JB-73-12R are Active products with full RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Primary Part Selection (MOS2CT52R120J): Select the KOA Speer MOS2CT52R120J when the compact form factor is required. The smaller physical dimensions (4.00mm x 12.00mm) accommodate space-constrained PCB layouts. The operating temperature range of -55°C to 200°C is suitable for standard industrial and consumer applications.

Substitute Part Selection (RSF200JB-73-12R): Select the YAGEO RSF200JB-73-12R when extended thermal performance is required. The operating temperature range extends to 235°C, providing margin for high-temperature environments. The larger physical dimensions (5.00mm x 15.50mm) are acceptable in applications where PCB space permits. Both parts deliver identical electrical performance at 12 Ohms ±5% with 2W power rating.

Selection between these parts is determined by physical space constraints and thermal operating requirements specific to the application circuit design.

Frequently Asked Questions (FAQ)

Q: Can RSF200JB-73-12R replace MOS2CT52R120J in all applications?

A: Electrical and compliance equivalence is confirmed. Physical dimensions differ; verify PCB layout accommodates the larger 5.00mm x 15.50mm form factor. The extended operating temperature range to 235°C provides additional thermal margin.

Q: What are the key differences between these two resistors?

A: Electrical specifications are identical: 12 Ohms ±5%, 2W, metal oxide film composition. Physical dimensions differ (4.00mm vs 5.00mm diameter; 12.00mm vs 15.50mm length). Operating temperature maximum differs (200°C vs 235°C). Both are ROHS3 compliant and REACH unaffected.

Q: Are both parts suitable for high-temperature applications?

A: The MOS2CT52R120J operates to 200°C maximum. The RSF200JB-73-12R operates to 235°C maximum. Application thermal requirements determine which part is appropriate.

Q: Do packaging differences affect circuit performance?

A: No. Both parts are axial through-hole resistors with identical electrical characteristics. Packaging differences (Cut Tape vs Bulk) relate to procurement and handling, not circuit performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both MOS2CT52R120J and RSF200JB-73-12R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use.

Q: What is the temperature coefficient difference?

A: The MOS2CT52R120J specifies ±300ppm/°C. The RSF200JB-73-12R temperature coefficient is not provided in available documentation. Both parts are metal oxide film composition with comparable stability characteristics.

Q: Can these parts be used interchangeably on the same PCB?

A: Electrical interchangeability is confirmed. Physical dimensions must be verified against PCB hole spacing and component clearance requirements. The RSF200JB-73-12R larger diameter (5.00mm vs 4.00mm) may require layout adjustment in space-constrained designs.