MOS3CT631R620J Equivalent & Substitute Parts

Part Overview

The MOS3CT631R620J is a 62 Ohms ±5% 3W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. as part of the MOS series. This reduced-size leaded resistor features metal oxide film composition with flame retardant coating and safety characteristics. The component is currently in active production status with 1005 units available in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same resistance value, tolerance, power rating, and physical dimensions, while accommodating different packaging formats or minor feature variations.

Substiute Parts

MOS3CT631R620J

KOA Speer Electronics, Inc.In Stock: 1083MOS3CT631R620J Datasheet

Current PartRFQ

MOS3CT521R620J

KOA Speer Electronics, Inc.In Stock: 1965MOS3CT521R620J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOS3CT631R620J is permissible with the MOS3CT521R620J based on the following criteria:

Electrical Parameters (Identical):

• Resistance value: 62 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Temperature coefficient: ±300ppm/°C
• Operating temperature range: -55°C to 200°C
• Number of terminations: 2

Mechanical Parameters (Identical):

• Package type: Axial
• Physical dimensions: 0.236" Dia × 0.610" L (6.00mm × 15.50mm)

Compliance Parameters (Equivalent):

• RoHS3 Compliant status maintained
• Both components are active production status

Packaging Difference:

• MOS3CT631R620J: Tape & Reel (TR) format
• MOS3CT521R620J: Cut Tape (CT) format

The substitute part maintains all critical electrical and mechanical specifications required for functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the MOS3CT631R620J and MOS3CT521R620J are active production components from KOA Speer Electronics, Inc., with full ROHS3 compliance. Selection between these parts is determined by packaging requirements rather than electrical performance:

MOS3CT631R620J (Tape & Reel): Select for high-volume automated assembly operations requiring continuous reel feeding and pick-and-place machine compatibility.

MOS3CT521R620J (Cut Tape): Select for lower-volume applications, manual assembly processes, or when cut tape format is preferred for inventory management and component handling.

Both components satisfy identical electrical specifications and thermal operating ranges, ensuring functional interchangeability in circuit design applications.

Frequently Asked Questions (FAQ)

Q: Are the MOS3CT631R620J and MOS3CT521R620J electrically identical?

A: Yes. Both components have identical resistance (62 Ohms), tolerance (±5%), power rating (3W), temperature coefficient (±300ppm/°C), and operating temperature range (-55°C to 200°C). They are functionally equivalent in all circuit applications.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. The MOS3CT631R620J is supplied in Tape & Reel (TR) format for automated assembly, while the MOS3CT521R620J is supplied in Cut Tape (CT) format for manual or lower-volume assembly processes. Physical dimensions and all electrical parameters remain identical.

Q: Can I substitute MOS3CT521R620J for MOS3CT631R620J in my design?

A: Yes, provided your assembly process accommodates Cut Tape format. The electrical and mechanical specifications are equivalent, and both components maintain ROHS3 compliance and active production status.

Q: Are the physical dimensions identical?

A: Yes. Both components have identical axial package dimensions of 0.236" diameter × 0.610" length (6.00mm × 15.50mm), ensuring identical PCB footprint and mounting compatibility.

Q: What packaging format should I specify for my application?

A: Specify Tape & Reel (TR) format for automated high-volume production. Specify Cut Tape (CT) format for manual assembly, prototyping, or lower-volume manufacturing processes.