MOS2CT52R912J Equivalent & Substitute Parts

Part Overview

The MOS2CT52R912J is a 9.1 kOhms ±5% 2W through-hole resistor manufactured by KOA Speer Electronics, Inc. It features metal oxide film composition with flame retardant coating and safety characteristics. The part is currently active in production with 647 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and environmental ratings to ensure direct functional replacement in circuit applications.

Substiute Parts

MOS2CT52R912J

KOA Speer Electronics, Inc.In Stock: 707MOS2CT52R912J Datasheet

Current PartRFQ

RSF200JB-73-9K1

YAGEOIn Stock: 3192RSF200JB-73-9K1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOS2CT52R912J are identified based on the following critical parameters that determine functional equivalence:

Electrical Parameters (Primary Criteria):

• Resistance value: 9.1 kOhms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Metal Oxide Film

Mechanical Parameters (Secondary Criteria):

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

Environmental & Compliance Parameters:

• Operating temperature range compatibility
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The RSF200JB-73-9K1 from YAGEO meets all primary electrical and mechanical criteria. Physical dimensions vary slightly (0.197" Dia x 0.610" L versus 0.157" Dia x 0.472" L), which is acceptable for axial through-hole applications where lead spacing and hole diameter compatibility are maintained. The substitute part extends the operating temperature range to -55°C ~ 235°C, providing enhanced thermal performance.

Parameter Comparison

Engineering Selection Recommendations

MOS2CT52R912J (KOA Speer Electronics) is the primary specification. Select this part when:

• Original design specifications require the exact physical dimensions (4.00mm x 12.00mm)
• PCB layout constraints necessitate the reduced size form factor
• Inventory availability of the original manufacturer is prioritized
• Temperature coefficient specification of ±300ppm/°C is a design requirement

RSF200JB-73-9K1 (YAGEO) is a qualified substitute. Select this part when:

• The original part is unavailable or lead times are excessive
• PCB layout can accommodate the larger physical dimensions (5.00mm x 15.50mm)
• Extended operating temperature range to 235°C provides design margin
• Higher inventory availability (3099 units) supports production schedules
• Both parts maintain ROHS3 compliance and identical electrical specifications

Both parts are active products with full RoHS3 compliance and unlimited moisture sensitivity ratings, ensuring long-term supply chain viability and environmental regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can RSF200JB-73-9K1 be used as a direct replacement for MOS2CT52R912J?

A: Yes, for applications where physical dimensions are not constrained. Both parts have identical electrical specifications (9.1 kOhms, ±5%, 2W, metal oxide film, axial package). The substitute part is physically larger (5.00mm diameter vs. 4.00mm, 15.50mm length vs. 12.00mm). Verify PCB hole spacing and component clearance before substitution.

Q: What are the key differences between these parts?

A: The primary differences are physical dimensions and operating temperature range. The YAGEO substitute extends the maximum operating temperature from 200°C to 235°C. The KOA Speer part specifies a temperature coefficient of ±300ppm/°C, while the YAGEO specification does not include this parameter. Both parts are metal oxide film composition with identical electrical ratings.

Q: Are both parts RoHS compliant?

A: Yes. Both MOS2CT52R912J and RSF200JB-73-9K1 are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: Which part should be selected for high-temperature applications?

A: The RSF200JB-73-9K1 (YAGEO) supports operation up to 235°C, compared to 200°C for the MOS2CT52R912J. For applications requiring sustained operation above 200°C, the YAGEO substitute provides additional thermal margin.

Q: Does the size difference affect circuit performance?

A: No. The size difference does not affect electrical performance. Both parts have identical resistance, tolerance, power rating, and composition. Size differences only impact PCB layout and physical placement. Verify that the larger substitute dimensions fit within available PCB space and component clearance requirements.

Q: What packaging formats are available?

A: MOS2CT52R912J is supplied in Tape & Reel (TR) format. RSF200JB-73-9K1 is supplied in Bulk format. Confirm packaging requirements with procurement specifications before ordering.