BLF145
Download datasheetThis device has been transferred from Ampleon to Rochester Electronics.
HF power MOS transistor
Silicon N-channel enhancement mode vertical D-MOS transistor designed for SSB transmitter applications in the HF 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
- Good thermal stability
- Withstand full load mismatch.
Applications
- SSB transmitter applications in the HF frequency range
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 1 | 30 | 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; f = 28 MHz; IDq = 1.3 A | 20 | dB | ||
| ηD | drain efficiency | VDS = 28 V; f = 28 MHz; IDq = 1.3 A | 40 | % | ||
| IMD3 | third-order intermodulation distortion | VDS = 28 V; IDq = 1.3 A [0] | -43 | -40 | dB | |
Package / Packing
| Type number | Package | Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF145 | CRFM4 (SOT123A) |
sot123a_po | Bulk Pack | Transferred | Standard Marking |
BLF145,112 (9338 170 70112) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D | drain |
|
|
| 2 | S | souce | ||
| 3 | G | gate | ||
| 4 | S | source |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF145 | 9338 170 70112 | BLF145,112 | Rochester Electronics | Buy | Not available |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| HF power MOS transistor | Data sheet | 2007-01-11 | |
| 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 | 2025-02-12 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2024-10-08 | |
| Packages for RF power transistors | Leaflet | 2024-10-25 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| BLF145 14 V 250 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF145 28 V 250 mA S-parameter data | S-parameter | 2012-06-08 |