78250MC Equivalent & Substitute Parts Reference

Part Overview

The 78250MC is a surface mount transformer manufactured by Murata Power Solutions Inc., designed for use with MAX250 and MAX251 applications. This component features a 1.5 kVDC isolation rating and 2.5 mH inductance in a compact SMD package. The 78250MC carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's active product line. Identifying qualified substitute parts is essential for ongoing production support, legacy system maintenance, and design continuity.

Substiute Parts

78250MC

Murata Power Solutions Inc.In Stock: 228578250MC Datasheet

Current PartRFQ

78250JC

Murata Power Solutions Inc.In Stock: 117578250JC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 78250JC qualifies as a direct substitute for the 78250MC based on the following critical parameters:

• Inductance: Both parts specify 2 mH, ensuring equivalent magnetic performance
• Mounting Type: Both are surface mount components with identical package footprint (0.354" L x 0.375" W x 0.260" H)
• Application Compatibility: Both are rated for MAX250 and MAX251 use
• Electrical Isolation: Both meet 1.5 kVDC isolation requirements
• Compliance Standards: Both are ROHS3 compliant and REACH unaffected
• Moisture Sensitivity: Both carry MSL 1 rating

The primary distinction is product status: 78250JC is Active, while 78250MC is Not For New Designs. This substitution maintains full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 78250JC is the qualified substitute for 78250MC applications. Selection should be based on the following factors:

For New Designs: Use 78250JC, which carries Active product status and ensures long-term availability and manufacturer support.

For Legacy System Maintenance: The 78250JC provides direct functional replacement with identical electrical performance, mechanical fit, and compliance certifications (ROHS3, REACH unaffected).

Compliance Continuity: Both parts maintain equivalent regulatory standing, eliminating compliance re-qualification requirements for system-level certifications.

Availability: 78250JC inventory status (1092 Pcs New Original In Stock) supports production continuity compared to 78250MC (2200 Pcs New Original In Stock).

Frequently Asked Questions (FAQ)

Q: Can 78250JC directly replace 78250MC in existing assemblies? A: Yes. Both parts share identical inductance (2 mH), package footprint (0.354" x 0.375" x 0.260"), mounting type (surface mount), and application compatibility (MAX250, MAX251). No circuit modifications are required.

Q: Are there electrical performance differences between these parts? A: No. Both parts specify 2 mH inductance and 1.5 kVDC isolation rating. Electrical performance is equivalent.

Q: What is the significance of the "Not For New Designs" status on 78250MC? A: This designation indicates the manufacturer has transitioned this part to end-of-life status. The 78250JC is the active replacement and should be used for new designs and ongoing production.

Q: Do both parts meet the same compliance requirements? A: Yes. Both are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory standing.

Q: Are the package dimensions identical? A: Yes. Both parts measure 0.354" L x 0.375" W x 0.260" H (9.00mm x 9.52mm x 6.60mm), ensuring identical PCB footprint compatibility.

Q: What is the moisture sensitivity level for these transformers? A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.