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API Delevan 6446-024 Equivalent & Substitute Parts
Part Overview
The API Delevan 6446-024 is a 20VA laminated core power transformer with dual primary and secondary windings, designed for through-hole mounting applications. The primary winding supports 115V or 230V input, while the secondary winding provides parallel 12V or series 24V output configurations. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | 6446-024 |
| Manufacturer | API Delevan Inc. |
| Series | 6446 |
| Power Rating | 20VA |
| Core Type | Laminated |
| Primary Voltage Options | 115V, 230V |
| Secondary Voltage (Parallel) | 12V |
| Secondary Voltage (Series) | 24V |
| Maximum Output Current (Parallel) | 1.66A |
| Maximum Output Current (Series) | 830mA |
| Mounting Type | Through Hole |
| Termination Style | PC Pin |
| Isolation Voltage | 4000Vrms |
| Physical Dimensions | 57.15mm L × 47.63mm W × 36.50mm H |
| Weight | 0.9 lb (408.23 g) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute components for the 6446-024 are identified based on electrical and mechanical parameter equivalence. The critical parameters determining substitution eligibility are:
- Power rating (20VA)
- Core type (laminated)
- Primary voltage configuration (115V, 230V dual winding)
- Secondary voltage output (parallel 12V, series 24V dual winding)
- Output current capacity (parallel 1.66A, series 830mA)
- Mounting type (through hole)
- Termination style (PC pin)
- Isolation voltage (4000Vrms)
- Physical envelope (57.15mm L × 47.63mm W × 36.50mm H)
The 6446R-024 qualifies as a direct substitute, maintaining identical electrical specifications and mechanical form factor while offering improved product status and regulatory compliance.
Parameter Comparison
| Parameter | 6446-024 (Main Part) | 6446R-024 (Substitute) |
|---|---|---|
| Manufacturer | API Delevan Inc. | API Delevan Inc. |
| Power Rating | 20VA | 20VA |
| Core Type | Laminated | Laminated |
| Primary Voltage | 115V, 230V | 115V, 230V |
| Secondary Voltage (Parallel) | 12V | 12V |
| Secondary Voltage (Series) | 24V | 24V |
| Output Current - Parallel | 1.66A | 1.66A |
| Output Current - Series | 830mA | 830mA |
| Primary Windings | Dual | Dual |
| Secondary Windings | Dual | Dual |
| Center Tap | No | No |
| Mounting Type | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin |
| Isolation Voltage | 4000Vrms | 4000Vrms |
| Dimensions | 57.15mm L × 47.63mm W × 36.50mm H | 57.15mm L × 47.63mm W × 36.50mm H |
| Weight | 0.9 lb (408.23 g) | 0.9 lb (408.23 g) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The 6446R-024 is the direct equivalent substitute for the obsolete 6446-024. Both components share identical electrical performance specifications and mechanical form factors, ensuring pin-for-pin and footprint compatibility in existing circuit designs.
The primary distinction between these components is product lifecycle status and regulatory compliance. The 6446-024 is obsolete and RoHS non-compliant, while the 6446R-024 maintains active production status and meets ROHS3 compliance requirements. For new designs and ongoing system support, the 6446R-024 is the appropriate selection.
Both components maintain equivalent isolation voltage (4000Vrms), power capacity (20VA), and output current specifications across parallel and series winding configurations. No circuit redesign or performance trade-offs are required when transitioning from the 6446-024 to the 6446R-024.
Frequently Asked Questions (FAQ)
Q: Can the 6446R-024 be used as a direct replacement for the 6446-024 in existing applications?
A: Yes. The 6446R-024 provides identical electrical and mechanical specifications. Pin configuration, footprint, and performance characteristics are equivalent, enabling direct substitution without circuit modification.
Q: What is the primary advantage of selecting the 6446R-024 over the 6446-024?
A: The 6446R-024 is an active product with ROHS3 compliance, whereas the 6446-024 is obsolete and RoHS non-compliant. For new designs and long-term availability, the 6446R-024 is the recommended choice.
Q: Are the output current ratings identical between these components?
A: Yes. Both the 6446-024 and 6446R-024 deliver 1.66A maximum output current in parallel winding configuration and 830mA in series winding configuration.
Q: Do both components support the same primary voltage inputs?
A: Yes. Both components feature dual primary windings supporting 115V or 230V input selection.
Q: Is the physical footprint identical for PCB mounting?
A: Yes. Both components share identical dimensions (57.15mm L × 47.63mm W × 36.50mm H) and through-hole PC pin termination, ensuring identical PCB layout compatibility.
Q: What is the isolation voltage rating for these transformers?
A: Both components provide 4000Vrms isolation voltage between primary and secondary windings.
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