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Murata Power Solutions 78601/8MC Pulse Transformer - Equivalent & Substitute Parts
Part Overview
The Murata Power Solutions 78601/8MC is a 1mH general purpose pulse transformer with 1:1 turns ratio, designed for surface mount applications. This component operates across a 0°C to 70°C temperature range and features a compact footprint of 0.375" L x 0.354" W (9.52mm x 9.00mm). The 78601/8MC carries a "Not For New Designs" product status, indicating that Murata has transitioned this model out of active production. Engineers requiring this transformer specification must evaluate approved substitute components to ensure design continuity and long-term supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 78601/8MC |
| Manufacturer | Murata Power Solutions Inc. |
| Transformer Type | General Purpose |
| Inductance | 1mH |
| ET (Volt-Time) | 15VµS |
| Turns Ratio - Primary:Secondary | 1:1 |
| Mounting Type | Surface Mount |
| Size / Dimension | 0.375" L x 0.354" W (9.52mm x 9.00mm) |
| Height - Seated (Max) | 0.250" (6.35mm) |
| Operating Temperature | 0°C ~ 70°C |
| Packaging | Tube |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitution eligibility for the 78601/8MC is determined by the following critical parameters:
- Transformer Type: Must be General Purpose pulse transformer
- Turns Ratio: Must maintain 1:1 primary to secondary ratio
- Mounting Type: Must be Surface Mount
- Physical Footprint: Must match 0.375" L x 0.354" W (9.52mm x 9.00mm) and height ≤ 0.250" (6.35mm)
- Operating Temperature Range: Must support 0°C ~ 70°C minimum
- ET (Volt-Time) Rating: Must meet or exceed 15VµS specification
- Packaging: Tube packaging format
The 78601/8JC qualifies as a manufacturer-recommended substitute based on these parameters. While the inductance differs (850µH versus 1mH), the substitute maintains identical electrical performance characteristics (ET rating, turns ratio, voltage-time product) and mechanical compatibility (footprint, height, mounting type) required for direct replacement in the application circuit.
Parameter Comparison
| Parameter | 78601/8MC (Original) | 78601/8JC (Substitute) |
|---|---|---|
| Manufacturer | Murata Power Solutions Inc. | Murata Power Solutions Inc. |
| Transformer Type | General Purpose | General Purpose |
| Inductance | 1mH | 850µH |
| ET (Volt-Time) | 15VµS | 15VµS |
| Turns Ratio - Primary:Secondary | 1:1 | 1:1 |
| Mounting Type | Surface Mount | Surface Mount |
| Size / Dimension | 0.375" L x 0.354" W (9.52mm x 9.00mm) | 0.375" L x 0.354" W (9.52mm x 9.00mm) |
| Height - Seated (Max) | 0.250" (6.35mm) | 0.250" (6.35mm) |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Packaging | Tube | Tube |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Not For New Designs | Active |
Engineering Selection Recommendations
The 78601/8JC is the manufacturer-recommended substitute for the 78601/8MC. The original part carries "Not For New Designs" status, making the transition to an active product line essential for ongoing production and new design implementations.
The 78601/8JC maintains full mechanical and electrical compatibility through identical physical dimensions, mounting configuration, and ET rating. Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity classification, ensuring equivalent environmental performance and handling requirements.
The substitute part is currently in active production status with confirmed inventory availability (1036 pcs), providing supply chain continuity and long-term component sourcing reliability compared to the obsolete 78601/8MC.
Frequently Asked Questions (FAQ)
Q: Can the 78601/8JC directly replace the 78601/8MC in existing designs?
A: Yes. The 78601/8JC maintains identical physical footprint (0.375" L x 0.354" W, 0.250" max height), mounting type (surface mount), turns ratio (1:1), and ET rating (15VµS). Both components fit the same PCB layout and solder pattern without modification.
Q: What is the difference between the 78601/8MC and 78601/8JC?
A: The primary difference is inductance specification: 78601/8MC is rated at 1mH, while 78601/8JC is rated at 850µH. Both transformers share identical ET (volt-time) ratings, turns ratios, physical dimensions, and operating temperature ranges. The inductance difference reflects design optimization within the same product family.
Q: Why is the 78601/8MC marked "Not For New Designs"?
A: This designation indicates that Murata Power Solutions has transitioned this model out of active production. New designs should utilize the 78601/8JC, which is actively manufactured and supported.
Q: Are there any compliance or certification differences between these parts?
A: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification. The 78601/8MC is REACH Affected, while the 78601/8JC is REACH Unaffected. Both share the same ECCN (EAR99) and HTSUS (8504.31.2000) classifications.
Q: What packaging format is used for these transformers?
A: Both the 78601/8MC and 78601/8JC are supplied in Tube packaging, suitable for automated assembly processes and standard component handling.
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