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Equivalent & Substitute Parts for F6-20 Laminated Power Transformer
Part Overview
The F6-20 is a laminated core power transformer manufactured by Triad Magnetics, rated for 30VA with a single primary winding (115V) and single secondary winding (20V) featuring a center tap. This chassis mount transformer is designed for applications requiring isolated AC power conversion with a maximum output current of 1.5A. The part is currently in active production status with RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when inventory constraints, lead time requirements, or supply chain considerations necessitate alternative sourcing while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Criticality for Substitution |
|---|---|---|
| Voltage - Primary | 115V | Critical |
| Voltage - Secondary (Full Load) | 20V | Critical |
| Current - Output (Max) | 1.5A | Critical |
| Power - Max | 30VA | Critical |
| Center Tap | Yes | Critical |
| Mounting Type | Chassis Mount | Critical |
| Termination Style | Solder, Quick Connect - 0.187" (4.7mm) | Critical |
| Voltage - Isolation | 2500VAC | Critical |
| Type | Laminated Core | Important |
| RoHS Status | ROHS3 Compliant | Important |
Substitute Part Grouping Explanation
Substitution eligibility for the F6-20 transformer is determined by strict equivalence across all critical electrical parameters. The substitute part 241-6-20 (Signal Transformer, Two-4-One™ series) qualifies as a direct equivalent based on the following criteria:
Critical Electrical Parameters (Must Match Exactly):
- Primary voltage: 115V
- Secondary voltage: 20V
- Maximum output current: 1.5A
- Power rating: 30VA
- Center tap configuration: Present
- Isolation voltage: 2500V
Critical Mechanical Parameters (Must Match Exactly):
- Mounting type: Chassis mount
- Termination style: Solder and Quick Connect connectors
- Core type: Laminated
Compliance Parameters (Must Match or Exceed):
- RoHS3 compliance
- REACH unaffected status
- ECCN and HTSUS classifications
The 241-6-20 meets all critical parameters with dimensional variations within acceptable tolerances for chassis mount applications (length 82.60mm vs. 82.55mm; width 44.30mm vs. 42.85mm; height 49.80mm vs. 49.20mm).
Parameter Comparison
| Parameter | F6-20 (Triad Magnetics) | 241-6-20 (Signal Transformer) | Match Status |
|---|---|---|---|
| Voltage - Primary | 115V | 115V | Exact Match |
| Voltage - Secondary (Full Load) | 20V | 20V | Exact Match |
| Current - Output (Max) | 1.5A | 1.5A | Exact Match |
| Power - Max | 30VA | 30VA | Exact Match |
| Center Tap | Yes | Yes | Exact Match |
| Primary Winding(s) | Single | Single | Exact Match |
| Secondary Winding(s) | Single | Single | Exact Match |
| Mounting Type | Chassis Mount | Chassis Mount | Exact Match |
| Termination Style | Solder, Quick Connect - 0.187" (4.7mm) | Solder, Quick Connect | Exact Match |
| Type | Laminated Core | Laminated Core | Exact Match |
| Voltage - Isolation | 2500VAC | 2500Vrms | Exact Match |
| Weight | 1.1 lbs (499 g) | 1.1 lbs (499 g) | Exact Match |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Exact Match |
| REACH Status | REACH Unaffected | REACH Unaffected | Exact Match |
| ECCN | EAR99 | EAR99 | Exact Match |
| HTSUS | 8504.31.4035 | 8504.31.4035 | Exact Match |
| Size / Dimension (L x W) | 82.55mm x 42.85mm | 82.60mm x 44.30mm | Within Tolerance |
| Height - Seated (Max) | 49.20mm | 49.80mm | Within Tolerance |
Engineering Selection Recommendations
The 241-6-20 manufactured by Signal Transformer is a direct electrical and mechanical equivalent to the F6-20. Selection between these parts should be based on the following factors:
Product Status: Both parts are in active production status, ensuring continued availability and support.
Compliance Certification: Both parts maintain identical RoHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.
Supply Chain Considerations: The F6-20 currently has 978 units in stock, while the 241-6-20 has 903 units available. Selection may depend on inventory availability and delivery requirements.
Dimensional Compatibility: Dimensional variations between the two parts (maximum 1.6mm in length, 1.45mm in width, 0.6mm in height) are within acceptable tolerances for standard chassis mount applications. Verify mounting hole alignment and clearance in the specific application before final selection.
Series Designation: The F6-20 belongs to the Quick Pack series, while the 241-6-20 belongs to the Two-4-One™ series. This distinction reflects manufacturer product lines but does not affect electrical or mechanical compatibility.
Frequently Asked Questions (FAQ)
Q: Can the 241-6-20 be used as a direct replacement for the F6-20 in existing designs?
A: Yes. The 241-6-20 meets all critical electrical parameters (115V primary, 20V secondary, 1.5A output, 30VA rating, center tap, 2500V isolation) and mechanical specifications (chassis mount, solder and quick connect termination, laminated core). Dimensional variations are within acceptable tolerances for standard chassis mount applications.
Q: Are there any differences in termination connectors between these parts?
A: Both parts feature solder and quick connect termination. The F6-20 specifies 0.187" (4.7mm) quick connect dimensions. The 241-6-20 specifies quick connect termination without dimensional detail in the provided data. Verify connector compatibility in the specific application.
Q: Do both parts meet the same regulatory requirements?
A: Yes. Both the F6-20 and 241-6-20 are RoHS3 compliant, REACH unaffected, classified as EAR99 for export control, and share the same HTSUS code (8504.31.4035).
Q: What are the dimensional differences, and do they matter?
A: The 241-6-20 is 0.05mm longer, 1.45mm wider, and 0.6mm taller than the F6-20. These differences are negligible for standard chassis mount applications but should be verified against specific mounting constraints, clearance requirements, and PCB layout in the target application.
Q: Which part should be selected for new designs?
A: Both parts are suitable for new designs. Selection should be based on current inventory availability, lead time requirements, and any specific supplier preferences. Both parts are in active production status with equivalent technical specifications.
Q: Is the center tap configuration identical on both parts?
A: Yes. Both the F6-20 and 241-6-20 feature a center tap on the secondary winding, enabling split-rail power supply configurations or other center-tap dependent circuit topologies.
Q: What is the isolation voltage rating, and is it the same for both parts?
A: Both parts are rated for 2500V isolation (F6-20 specifies 2500VAC; 241-6-20 specifies 2500Vrms, which is equivalent). This isolation rating applies to the dielectric strength between primary and secondary windings.
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