Request Quote
(Ships tomorrow)
Equivalent & Substitute Parts for 78253/55MC Transformer
Part Overview
The 78253/55MC is a surface mount transformer manufactured by Murata Power Solutions Inc., designed for use with the MAX253 integrated circuit. This component features an inductance of 830 µH and is housed in a compact 9.00mm × 9.52mm package with a maximum seated height of 6.60mm. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where the original specification must be maintained or where compatible alternatives with different electrical characteristics are acceptable for the application.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | 78253/55MC | — |
| Manufacturer | Murata Power Solutions Inc. | — |
| Series | 78253 | — |
| Inductance | 830 | µH |
| Mounting Type | Surface Mount | — |
| Package Dimensions (L × W) | 9.00 × 9.52 | mm |
| Height - Seated (Max) | 6.60 | mm |
| For Use With | MAX253 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
| Product Status | Not For New Designs | — |
Substitute Part Grouping Explanation
The 78253/55JC is identified as a substitute part within the same 78253 series from Murata Power Solutions. Substitution eligibility is determined by the following parameters:
- Series Compatibility: Both parts belong to the 78253 series, confirming manufacturer lineage and design family alignment.
- Mounting Type: Both are surface mount components, ensuring PCB assembly compatibility.
- Package Dimensions: Identical footprint (9.00mm × 9.52mm) and maximum height (6.60mm), allowing direct board-level placement without layout modification.
- Application: Both are specified for use with the MAX253 integrated circuit.
- Regulatory Compliance: Both meet ROHS3 and EAR99 classifications.
- Moisture Sensitivity: Both rated MSL 1 (Unlimited), indicating identical handling and storage requirements.
The primary electrical difference is inductance: the 78253/55MC provides 830 µH, while the 78253/55JC provides 360 µH. This difference must be evaluated against circuit design requirements.
Parameter Comparison
| Parameter | 78253/55MC (Main Part) | 78253/55JC (Substitute) |
|---|---|---|
| Manufacturer Part Number | 78253/55MC | 78253/55JC |
| Manufacturer | Murata Power Solutions Inc. | Murata Power Solutions |
| Series | 78253 | 78253J |
| Inductance | 830 µH | 360 µH |
| Mounting Type | Surface Mount | Surface Mount |
| Package Dimensions (L × W) | 9.00 × 9.52 mm | 9.00 × 9.52 mm |
| Height - Seated (Max) | 6.60 mm | 6.60 mm |
| For Use With | MAX253 | MAX253 |
| Packaging | Tube | Tube |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Not For New Designs | Active |
| REACH Status | REACH Affected | REACH Unaffected |
Engineering Selection Recommendations
Selection between the 78253/55MC and 78253/55JC must be based on circuit inductance requirements. The 78253/55MC (830 µH) and 78253/55JC (360 µH) have a 2.3:1 inductance ratio and are not electrically interchangeable without circuit analysis.
The 78253/55JC holds Active product status, whereas the 78253/55MC is designated Not For New Designs. For applications requiring the 830 µH specification, the 78253/55MC remains the correct choice. For applications where 360 µH inductance is acceptable or required, the 78253/55JC is the preferred option due to its Active status and REACH Unaffected classification.
Both parts meet ROHS3 compliance and share identical mechanical and thermal characteristics, ensuring compatibility at the board assembly level when electrical requirements are satisfied.
Frequently Asked Questions (FAQ)
Q: Can the 78253/55JC directly replace the 78253/55MC?
A: Direct replacement is possible only if the circuit design accepts 360 µH inductance. The 78253/55JC has half the inductance of the 78253/55MC. Circuit simulation or testing is required to confirm functional equivalence for your specific application.
Q: Are the physical packages identical?
A: Yes. Both parts have identical footprints (9.00mm × 9.52mm) and maximum seated height (6.60mm), allowing direct PCB placement without layout changes.
Q: What is the difference in product status between these parts?
A: The 78253/55MC is marked "Not For New Designs," indicating it has been superseded. The 78253/55JC is Active, meaning it is currently manufactured and supported by Murata Power Solutions.
Q: Do both parts have the same moisture sensitivity requirements?
A: Yes. Both are rated MSL 1 (Unlimited), requiring identical handling, storage, and reflow procedures.
Q: What is the REACH status difference?
A: The 78253/55MC is REACH Affected, while the 78253/55JC is REACH Unaffected. This may impact supply chain compliance documentation for certain regions or applications.
Q: Are both parts suitable for MAX253 applications?
A: Both are specified for use with the MAX253 integrated circuit. However, the different inductance values mean they may perform differently in the circuit. Application-specific validation is required.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts