MOS2CT52R512J Equivalent & Substitute Parts

Part Overview

The MOS2CT52R512J is a 5.1 kOhms ±5% 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 performance across industrial temperature ranges. The part is currently active in production with 2,852 pieces in stock inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to supply constraints, procurement preferences, or design flexibility needs.

Substiute Parts

MOS2CT52R512J

KOA Speer Electronics, Inc.In Stock: 2909MOS2CT52R512J Datasheet

Current PartRFQ

RSF200JB-73-5K1

YAGEOIn Stock: 6171RSF200JB-73-5K1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOS2CT52R512J is permissible when the following core parameters are maintained:

Electrical Parameters (Critical):

• Resistance value: 5.1 kOhms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Metal Oxide Film

Mechanical Parameters (Critical):

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

Compliance Parameters (Required):

• RoHS3 compliance
• REACH unaffected status

The RSF200JB-73-5K1 manufactured by YAGEO meets all critical electrical and mechanical parameters. Physical dimensions may vary within acceptable limits for through-hole axial resistors, and operating temperature ranges may extend beyond the original specification without compromising substitution validity.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (MOS2CT52R512J): Select the KOA Speer MOS2CT52R512J when the compact form factor is required and inventory availability is confirmed. This part is active in production with substantial stock levels (2,852 pieces) and meets all compliance requirements.

Substitute Selection (RSF200JB-73-5K1): The YAGEO RSF200JB-73-5K1 is electrically and functionally equivalent and serves as a valid substitute when the MOS2CT52R512J is unavailable. This part maintains identical electrical specifications and compliance certifications. The extended operating temperature range (-55°C ~ 235°C) provides additional thermal margin. Physical dimensions are larger; verify PCB layout and mechanical clearances accommodate the increased size (0.197" diameter vs. 0.157" diameter, 0.610" length vs. 0.472" length).

Both parts are ROHS3 compliant and REACH unaffected, ensuring regulatory compliance in target applications.

Frequently Asked Questions (FAQ)

Q: Can the RSF200JB-73-5K1 be used as a direct replacement for the MOS2CT52R512J?

A: Yes, the RSF200JB-73-5K1 is electrically equivalent with identical resistance (5.1 kOhms), tolerance (±5%), power rating (2W), and composition (metal oxide film). Both are axial through-hole packages with 2 terminations. Verify that the larger physical dimensions (0.197" diameter x 0.610" length) fit within your PCB layout constraints.

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

A: The primary differences are physical dimensions and operating temperature range. The YAGEO RSF200JB-73-5K1 is larger and rated to 235°C versus the KOA Speer MOS2CT52R512J rated to 200°C. The temperature coefficient specification is not provided for the substitute part. Both parts meet identical compliance requirements (ROHS3, REACH unaffected).

Q: Are there any compliance concerns with substitution?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Substitution does not introduce compliance risks.

Q: Does the larger size of the RSF200JB-73-5K1 affect electrical performance?

A: No. Physical size does not alter the electrical characteristics. The resistance value, tolerance, power rating, and temperature coefficient remain functionally equivalent. Size differences are mechanical only and affect PCB layout and thermal dissipation characteristics.

Q: What packaging formats are available for these parts?

A: The MOS2CT52R512J is supplied in cut tape (CT) packaging. The RSF200JB-73-5K1 is supplied in bulk packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Can these parts be used interchangeably in high-temperature applications?

A: The RSF200JB-73-5K1 has a higher maximum operating temperature (235°C vs. 200°C), making it suitable for applications requiring extended thermal performance. The MOS2CT52R512J is rated to 200°C. Select based on your specific application temperature requirements.