MOSX3CT631RR15J Equivalent & Substitute Parts

Part Overview

The MOSX3CT631RR15J is a 150 mOhms ±5% 3W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This metal oxide film resistor is designed for applications requiring low-resistance, high-power dissipation in a compact axial package. The component features flame-proof construction and safety certification, making it suitable for industrial and safety-critical applications. As an active product with established supply availability, equivalent parts may be required for design flexibility, supply chain optimization, or regional sourcing preferences.

Substiute Parts

MOSX3CT631RR15J

KOA Speer Electronics, Inc.In Stock: 835MOSX3CT631RR15J Datasheet

Current PartRFQ

PNP300JR-73-0R15

YAGEOIn Stock: 10687PNP300JR-73-0R15 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOSX3CT631RR15J is determined by the following critical parameters:

• Resistance Value: 150 mOhms (exact match required)
• Tolerance: ±5% (exact match required)
• Power Rating: 3W (exact match required)
• Package Configuration: Axial through-hole (exact match required)
• Operating Temperature Range: Must support -55°C ~ 200°C minimum
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The substitute part PNP300JR-73-0R15 meets all critical electrical parameters and regulatory requirements. While the composition differs (wirewound versus metal oxide film), both technologies deliver equivalent electrical performance at the specified resistance, tolerance, and power rating. Physical dimensions vary slightly, but both maintain standard axial package compatibility for through-hole PCB mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the MOSX3CT631RR15J and PNP300JR-73-0R15 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications.

The MOSX3CT631RR15J operates across a wider temperature range (-55°C to 200°C) compared to the PNP300JR-73-0R15 (-40°C to 200°C). Applications requiring operation below -40°C must use the KOA Speer component.

The PNP300JR-73-0R15 features a smaller physical footprint (4.60mm diameter versus 6.00mm), which may provide layout advantages in space-constrained designs. Both components maintain identical electrical specifications for resistance, tolerance, and power rating.

Selection between these parts should be based on specific application requirements regarding minimum operating temperature and available PCB space.

Frequently Asked Questions (FAQ)

Q: Can PNP300JR-73-0R15 replace MOSX3CT631RR15J in all applications?

A: Electrical substitution is valid for applications operating at -40°C or above. Applications requiring operation below -40°C must use MOSX3CT631RR15J due to its extended lower temperature limit.

Q: What is the difference between metal oxide film and wirewound composition?

A: Both compositions deliver the specified 150 mOhms resistance at 3W power rating with ±5% tolerance. Metal oxide film resistors typically exhibit different frequency response characteristics, while wirewound resistors may have different inductance properties. Component selection should be based on specific circuit requirements.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Both components use standard axial through-hole packages. The PNP300JR-73-0R15 is physically smaller (4.60mm diameter) than the MOSX3CT631RR15J (6.00mm diameter). Verify PCB hole spacing and component clearance before substitution.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both MOSX3CT631RR15J and PNP300JR-73-0R15 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the temperature coefficient significance?

A: The MOSX3CT631RR15J specifies ±300ppm/°C temperature coefficient. The PNP300JR-73-0R15 does not provide this specification. For applications with strict resistance stability requirements across temperature ranges, verify the wirewound component's actual temperature coefficient performance.