Gowanda’s 28M681M Molded Unshielded RF Coils are a part of the Series 28M, designed for high-quality, reliable performance in electronic applications. These coils feature a weight of 2.65 grams and dimensions of 22.86 × 7.137 × 7.137 mm, with a Through-Hole Technology (THT) mounting type. They are suitable for Commercial Off-The-Shelf (COTS) applications, offering an inductance of 6.8 µH and a minimum Q factor of 60 at a test frequency of 7.9 MHz. The coils have a DC resistance of 1.05 ohms, a self-resonant frequency of 75 MHz, and a current rating of 0.635 A DC. With a dielectric withstanding voltage of 1000, 200, and a tolerance of ±20%, these components are terminated with Pb and finished with Sn63Pb37. The phenolic core is unshielded, and the coils operate effectively within a temperature range of -55°C to +105°C. They are rated at Moisture Sensitivity Level 1 and are packaged in tape and reel, with fungal inert properties ensuring durability and reliability in various environments.
| Weight | 2.65 g |
|---|---|
| Dimensions | 22.86 × 7.137 × 7.137 mm |
| Series | 28M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 6.8 |
| Q MIN | 60 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 1.05 |
| SRF (MHz) | 75 |
| Current Rating (A DC) | 0.635 |
| DWV | 1000, 200 |
| Tolerance | ±20% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Phenolic |
| Shielded | No |
| Operating Temperature | -55°C to +105°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
