BLF245
Download datasheetVHF power MOS transistor
Silicon N-channel enhancement mode vertical D-MOS transistor designed for large signal amplifier applications in the VHF frequency range. The transistor is encapsulated in a 4-lead SOT123A flange package, with a ceramic cap. All leads are isolated from the flange. Matched gate-source voltage (VGS) groups are available on request.
Features and benefits
- High power gain
- Low noise figure
- Easy power control
- Good thermal stability
- Withstands full load mismatch
Applications
- Large signal amplifier applications in the VHF frequency range
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 25 | 175 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 30 | W | |||
| Test signal: CW | ||||||
| Gp | power gain | PL = 30 W; VDS = 28 V | 13 | 15.5 | dB | |
| ηD | drain efficiency | PL = 30 W; VDS = 28 V; f = 175 MHz; IDq = 50 mA | 50 | 67 | % | |
| PL | output power | 30 | W | |||
Package / Packing
All type numbers in the table below are discontinued.
| Type number |
Package type, (Package outline) |
Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF245 | SOT123 (SOT123A) |
sot123a_po | Bulk Pack | Withdrawn | Standard Marking |
BLF245,112 (933817060112) |
Discontinuation information
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D | drain |
|
|
| 2 | S | source | ||
| 3 | G | gate | ||
| 4 | S | source |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| VHF power MOS transistor | Data sheet | 2015-11-30 | |
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2025-02-03 | |
| RF power solutions for ISM, broadcast, navigation and safety radio applications | Brochure | 2026-04-17 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2026-04-17 | |
| Packages for RF power transistors | Leaflet | 2026-04-17 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| BLF245 14 V 50 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF245 12 5 V 50 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF245 28 V 50 mA S-parameter data | S-parameter | 2012-06-08 |