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FIT68-7 Equivalent & Substitute Parts Reference
Part Overview
The FIT68-7 is a 18.64 µH unshielded toroidal inductor manufactured by Triad Magnetics, designed for applications requiring fixed inductance with high current handling capability. This component features an iron powder core, rated for 8.1 A continuous current, and operates across the temperature range of -40°C to 85°C. The part is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when identical electrical specifications, mechanical dimensions, and compliance certifications are maintained across alternative part numbers within the same manufacturer series.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 18.64 µH |
| Current Rating | 8.1 A |
| DC Resistance (DCR) | 14.8 mOhm Max |
| Core Material | Iron Powder |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package Type | Radial, Vertical (Open) |
| Operating Temperature Range | -40°C to 85°C |
| Inductance Test Frequency | 10 kHz |
| Physical Dimensions | 0.875" L x 0.475" W (22.22 mm x 12.07 mm) |
| Height (Seated Max) | 0.950" (24.13 mm) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the FIT68-7 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part FIT68-7-B maintains identical specifications in the following key areas:
Electrical Parameters:
- Inductance value: 18.64 µH
- Current rating: 8.1 A
- DC resistance: 14.8 mOhm Max
- Core material: Iron Powder
- Shielding configuration: Unshielded
- Operating temperature range: -40°C to 85°C
- Test frequency: 10 kHz
Mechanical Parameters:
- Mounting type: Through Hole
- Package configuration: Radial, Vertical (Open)
- Physical dimensions: 0.875" L x 0.475" W (22.22 mm x 12.07 mm)
- Seated height: 0.950" (24.13 mm)
Compliance & Status:
- Product status: Active
- RoHS compliance: ROHS3 Compliant
- REACH status: REACH Unaffected
The FIT68-7-B is classified as a direct manufacturer equivalent within the Triad Magnetics FIT series, differing only in part number designation while maintaining complete functional and physical interchangeability.
Parameter Comparison
| Parameter | FIT68-7 | FIT68-7-B | Match Status |
|---|---|---|---|
| Inductance | 18.64 µH | 18.64 µH | Identical |
| Current Rating (Amps) | 8.1 A | 8.1 A | Identical |
| DC Resistance (DCR) | 14.8 mOhm Max | 14.8 mOhm Max | Identical |
| Core Material | Iron Powder | Iron Powder | Identical |
| Shielding | Unshielded | Unshielded | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | Radial, Vertical (Open) | Radial, Vertical (Open) | Identical |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Identical |
| Inductance Test Frequency | 10 kHz | 10 kHz | Identical |
| Physical Dimensions | 0.875" L x 0.475" W (22.22 mm x 12.07 mm) | 0.875" L x 0.475" W (22.22 mm x 12.07 mm) | Identical |
| Height (Seated Max) | 0.950" (24.13 mm) | 0.950" (24.13 mm) | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
Engineering Selection Recommendations
Both FIT68-7 and FIT68-7-B are Active status products manufactured by Triad Magnetics within the FIT series. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation. Both components maintain full ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The FIT68-7 currently maintains 1049 pieces in stock inventory, while the FIT68-7-B maintains 1034 pieces. Either part number is suitable for direct substitution in circuit designs requiring 18.64 µH inductance at 8.1 A current rating with 14.8 mOhm maximum DC resistance in through-hole toroidal configuration.
Frequently Asked Questions (FAQ)
Q: Can FIT68-7-B be used as a direct replacement for FIT68-7 in existing designs?
A: Yes. The FIT68-7-B is a direct equivalent with identical electrical specifications (18.64 µH inductance, 8.1 A current rating, 14.8 mOhm DCR), core material (iron powder), shielding (unshielded), and mechanical dimensions (0.875" L x 0.475" W, 0.950" seated height). Both are through-hole mounted in radial vertical configuration and operate across -40°C to 85°C.
Q: Are there any compliance differences between FIT68-7 and FIT68-7-B?
A: No. Both parts maintain identical compliance certifications: ROHS3 Compliant and REACH Unaffected status. No design modifications are required when substituting between these part numbers.
Q: What determines substitution eligibility for this inductor?
A: Substitution is determined by equivalence across inductance value, current rating, DC resistance, core material, shielding type, operating temperature range, mounting configuration, and physical dimensions. The FIT68-7-B meets all these criteria for the FIT68-7.
Q: Are the physical footprints identical between these parts?
A: Yes. Both components share identical dimensions: 0.875" length x 0.475" width (22.22 mm x 12.07 mm) with 0.950" maximum seated height. PCB layout and mechanical clearances require no modification when substituting between part numbers.
Q: What is the inductance test frequency for these components?
A: Both FIT68-7 and FIT68-7-B are tested at 10 kHz for inductance value verification.
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