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Equivalent & Substitute Parts for 78601/3MC Pulse Transformer
Part Overview
The 78601/3MC is a 200µH general purpose pulse transformer with 1:1 turns ratio manufactured by Murata Power Solutions Inc. This component is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Organizations using this part in active applications require equivalent alternatives that maintain functional compatibility while meeting current design standards and compliance requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 78601/3MC |
| Manufacturer | Murata Power Solutions Inc. |
| Series | 786 |
| Transformer Type | General Purpose |
| Inductance | 200µH |
| ET (Volt-Time) | 6VµS |
| Turns Ratio (Primary:Secondary) | 1:1 |
| Mounting Type | Surface Mount |
| Physical Dimensions | 0.375" L × 0.354" W (9.52mm × 9.00mm) |
| Height (Seated, Max) | 0.250" (6.35mm) |
| Operating Temperature Range | 0°C to 70°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitution eligibility for the 78601/3MC 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 to ensure PCB compatibility
- Physical Footprint: Must match or fit within 0.375" L × 0.354" W envelope with maximum height of 0.250"
- Operating Temperature Range: Must support 0°C to 70°C minimum
- ET (Volt-Time) Product: Must be 6VµS to maintain pulse handling characteristics
- Compliance: Must meet ROHS3 and maintain MSL 1 rating
The 78601/3JC qualifies as a direct substitute based on these parameters. While inductance differs (150µH versus 200µH), this part maintains all critical mechanical, electrical, and compliance specifications that define substitutability within the 786 series pulse transformer family.
Parameter Comparison
| Parameter | 78601/3MC (Original) | 78601/3JC (Substitute) |
|---|---|---|
| Manufacturer | Murata Power Solutions Inc. | Murata Power Solutions Inc. |
| Series | 786 | 786J |
| Transformer Type | General Purpose | General Purpose |
| Inductance | 200µH | 150µH |
| ET (Volt-Time) | 6VµS | 6VµS |
| Turns Ratio | 1:1 | 1:1 |
| Mounting Type | Surface Mount | Surface Mount |
| Physical Dimensions | 0.375" L × 0.354" W (9.52mm × 9.00mm) | 0.375" L × 0.354" W (9.52mm × 9.00mm) |
| Height (Seated, Max) | 0.250" (6.35mm) | 0.250" (6.35mm) |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Not For New Designs | Active |
| Packaging | Tube | Tube |
Engineering Selection Recommendations
The 78601/3JC is the manufacturer-recommended substitute for the 78601/3MC. Selection of this alternative is supported by the following factors:
- Product Status Alignment: The 78601/3JC carries Active status, ensuring continued availability and manufacturing support, whereas the 78601/3MC is designated Not For New Designs.
- Compliance Continuity: Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and environmental requirements remain satisfied.
- Mechanical Compatibility: Identical physical dimensions and mounting characteristics guarantee direct PCB footprint compatibility without layout modifications.
- Electrical Compatibility: Matching ET product (6VµS), turns ratio (1:1), and operating temperature range preserve circuit performance characteristics.
- Supply Chain Stability: The 78601/3JC demonstrates higher inventory availability (1231 Pcs versus 953 Pcs), supporting production continuity.
Frequently Asked Questions (FAQ)
Q: Can the 78601/3JC be used as a direct replacement for the 78601/3MC without PCB modifications?
A: Yes. Both parts share identical physical dimensions (0.375" L × 0.354" W × 0.250" max height) and surface mount footprints, enabling direct substitution without layout changes.
Q: What is the primary difference between these two parts?
A: The inductance specification differs: 78601/3MC provides 200µH while 78601/3JC provides 150µH. All other electrical and mechanical parameters remain identical.
Q: Why is the 78601/3MC marked "Not For New Designs"?
A: This designation indicates the part has been superseded in Murata's product lifecycle. The 78601/3JC represents the current active alternative within the 786 series family.
Q: Are there compliance or certification differences between these parts?
A: No. Both parts maintain ROHS3 compliance, identical MSL ratings (1 - Unlimited), and equivalent regulatory certifications (ECCN: EAR99, HTSUS: 8504.31.2000).
Q: Does the inductance difference affect circuit compatibility?
A: Inductance differences must be evaluated within the specific application context. Both parts maintain the same ET product (6VµS) and operating temperature range, but circuit performance depends on whether the application requires the specific 200µH or 150µH value.
Q: What is the packaging format for both parts?
A: Both the 78601/3MC and 78601/3JC are supplied in Tube packaging, maintaining consistent handling and storage requirements.
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