Product Overview
Surface mount common-mode beads from Fair-Rite provide a common magnetic path for flux generated by current to the load and the return current. This current compensation results in zero magnetic flux in the bead. The wires are oxygen-free, high-conductivity copper with 100% matte tin plating over a nickel undercoating. These SM Beads meet solderability specifications when tested in accordance with MIL-STD-202, method 208, achieving at least 95% solder coverage. They also meet the resistance to soldering requirements of EIA-186-10E (2605 C for 101 seconds) after preheating to within 100 C of soldering temperature. Recommended storage and operation temperature is -55 C to 125 C. A Surface Mount Bead Kit (part number 0199000025) is available for prototype evaluation.
Product Attributes
- Brand: Fair-Rite
- Product Type: Common-Mode SM Beads
- Wire Material: Oxygen-free high conductivity copper
- Plating: 100% matte tin over nickel undercoating
- Solderability Standard: MIL-STD-202, method 208
- Resistance to Soldering Standard: EIA-186-10E
- Recommended Storage & Operation Temperature: -55 C to 125 C
- Prototype Kit Part Number: 0199000025
Technical Specifications
| Part Number | Description | Digits 1 & 2 | Digits 3 & 4 | Last Digit (Packaging) |
|---|---|---|---|---|
| 2744051447 | 44 COMMON MODE SM BEAD | Product Class | Material Grade | 7 = Taped and Reeled |
| (Part Number ending in 6) | Bulk Packed | Product Class | Material Grade | 6 = Bulk Packed |
| Specification | Value | Unit | Notes |
|---|---|---|---|
| Weight | 1 | g | |
| Dimensions (A) | 4.60 | Max mm | 0.181 Max inch |
| Dimensions (B) | 6.50 +/- 0.15 | mm | 0.256 Max inch |
| Dimensions (C) | 12 | Max mm | 0.472 Max inch |
| Dimensions (D) | 2.5 0.50 | mm | 0.098 inch |
| Dimensions (E) | 3 0.10 | mm | 0.118 inch |
| Land Pattern (W) | 9.00 | (0.354) | |
| Land Pattern (X) | 1.00 | (0.040) | |
| Land Pattern (Y) | 5.00 | (0.197) | |
| Land Pattern (Z) | 3.00 | (0.118) | |
| Max Rdc | 4 | m | |
| Max Current Rating | 5 | amps |
| Test Frequency (MHz) | Typical Impedance () | Notes |
|---|---|---|
| 10 | 82 | |
| 25 | 133 | + |
| 100 | 236 | + |
| 250 | _ | |
| 300 | 357 |
| Tape Width (mm) | Pitch (mm) | Parts (7" Reel) | Parts (13" Reel) | Parts (14" Reel) |
|---|---|---|---|---|
| 12 | -- | 1000 | -- | -- |
| 16 | -- | -- | -- | -- |
| 24 | -- | -- | -- | -- |
Packaging Options:
- SM Beads are supplied taped and reeled per EIA 481 and IEC 60286-3 standards on 12 mm, 16 mm, and 24 mm tape widths.
- Taped and reeled parts are supplied on a 13 reel.
- SM Beads can also be supplied not taped and reeled, in which case they are bulk packed. This packing method changes the last digit of the part number to a 6.
Land Patterns: Suggested land patterns are in accordance with the latest revision of IPC-7351.
Testing & Measurement:
- SM Beads are controlled for impedance limits only. Minimum impedance values are specified for the + marked frequencies.
- Impedance measurement for 44 materials is performed on the 4193 Vector Impedance Analyzer.
- Impedance measurement for 52 SM Beads is performed on the 4291A RF Impedance Analyzer.
For any SM Bead requirement not listed, please contact customer service for availability and pricing.
2403251144_Fair-Rite-2744051447_C3211762.pdf
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