MOS1CT528R103J Equivalent & Substitute Parts

Part Overview

The MOS1CT528R103J is a 10 kOhms ±5% 1W through-hole resistor manufactured by KOA Speer Electronics, Inc. This metal oxide film resistor features flame retardant coating and safety characteristics, designed for axial package applications. The part is currently in active production status with 2514 pieces available in new original inventory. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory constraints require component alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

MOS1CT528R103J

KOA Speer Electronics, Inc.In Stock: 2587MOS1CT528R103J Datasheet

Current PartRFQ

MOS1CT528A103J

KOA Speer Electronics, Inc.In Stock: 2698MOS1CT528A103J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOS1CT528R103J is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part MOS1CT528A103J qualifies as a direct equivalent because it maintains identical specifications in the following key parameters:

• Resistance value: 10 kOhms
• Tolerance: ±5%
• Power rating: 1W
• Composition: Metal Oxide Film
• Temperature coefficient: ±300ppm/°C
• Operating temperature range: -55°C ~ 200°C
• Package configuration: Axial
• Physical dimensions: 0.118" Dia x 0.354" L (3.00mm x 9.00mm)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

Both parts share the same base product number (MOS1CT528) and series designation (MOS), confirming their functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the MOS1CT528R103J and MOS1CT528A103J are active production components from KOA Speer Electronics, Inc., with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on inventory availability and supply chain considerations rather than technical differentiation. The MOS1CT528A103J currently maintains higher inventory levels at 2667 pieces compared to 2514 pieces for the primary part number, making it suitable for high-volume procurement scenarios. Both parts are certified for identical operating conditions and regulatory requirements, ensuring seamless integration into existing circuit designs without modification to board layouts or electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can MOS1CT528A103J be used as a direct replacement for MOS1CT528R103J?

A: Yes. Both parts are electrically and mechanically identical, sharing the same resistance value (10 kOhms), tolerance (±5%), power rating (1W), temperature coefficient (±300ppm/°C), operating temperature range (-55°C ~ 200°C), and axial package dimensions (0.118" Dia x 0.354" L). No circuit modifications are required.

Q: Are there differences in the physical package between these two part numbers?

A: No. Both parts use identical axial package configurations with matching dimensions of 0.118" Dia x 0.354" L (3.00mm x 9.00mm). PCB footprints and lead spacing are identical, allowing direct board-level substitution.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both MOS1CT528R103J and MOS1CT528A103J are ROHS3 compliant and REACH unaffected. They carry identical certifications and are suitable for applications requiring these regulatory qualifications.

Q: What is the difference between the part numbers if they are equivalent?

A: The part numbers differ in their suffix designations (R103J versus A103J), which typically indicate different manufacturing batches or packaging configurations within the same product line. The base product number (MOS1CT528) and resistance/tolerance code (103J) remain constant, confirming functional equivalence.

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

A: Yes. Both parts are rated for operating temperatures from -55°C to 200°C with a temperature coefficient of ±300ppm/°C, making them suitable for high-temperature circuit applications within this range.

Q: Are there any inventory or lead time considerations when selecting between these substitutes?

A: The MOS1CT528A103J currently has higher inventory availability (2667 pieces) compared to the MOS1CT528R103J (2514 pieces). For applications requiring immediate availability or large-volume orders, the higher inventory level may influence procurement decisions.