Gowanda’s 28M181K is a high-quality molded unshielded RF coil, designed for reliable performance in various applications. Weighing 2.65 grams, this component features dimensions of 22.86 × 7.137 × 7.137 mm and belongs to the 28M series. It is suitable for through-hole technology (THT) mounting and is classified as a Commercial Off-The-Shelf (COTS) application grade. With an inductance of 1.8 µH and a minimum Q factor of 60, it operates at a test frequency of 7.9 MHz. The coil has a DC resistance of 0.135 ohms and a self-resonant frequency of 140 MHz, supporting a current rating of 1.75 A DC. It offers dielectric withstanding voltages of 1000 and 200, with a tolerance of ±10%. The termination type is lead-based with a Sn63Pb37 finish, and it features a phenolic core. Operating within a temperature range of -55°C to +105°C, it is rated at moisture sensitivity level 1 and is packaged in tape and reel (T&R) format. Additionally, the component is fungal inert, ensuring durability and reliability in demanding environments.
| Weight | 2.65 g |
|---|---|
| Dimensions | 22.86 × 7.137 × 7.137 mm |
| Series | 28M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 1.8 |
| Q MIN | 60 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.135 |
| SRF (MHz) | 140 |
| Current Rating (A DC) | 1.75 |
| DWV | 1000, 200 |
| Tolerance | ±10% |
| 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
