BLF242
Download datasheetThis device has been transferred from Ampleon to Rochester Electronics.
HF-VHF power MOS transistor
Silicon N-channel enhancement mode vertical D-MOS transistor designed for professional transmitter applications in the HF/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.
Features and benefits
- High power gain
- Low noise
- Easy power control
- Good thermal stability
- Withstands full load mismatch
- Gold metallization ensures excellent reliability
Applications
- Transmitter applications in the HF/VHF frequency range
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 25 | 200 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 5 | W | |||
| Test signal: CW | ||||||
| Gp | power gain | PL = 5 W; VDS = 28 V | 13 | 16 | dB | |
| ηD | drain efficiency | PL = 5 W; VDS = 28 V; f = 175 MHz; IDq = 10 mA | 50 | 60 | % | |
| PL | output power | 5 | W | |||
Package / Packing
| Type number | Package | Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF242 | CRFM4 (SOT123A) |
sot123a_po | Bulk Pack | Transferred | Standard Marking |
BLF242,112 (9338 170 30112) |
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 |
|---|---|---|---|---|---|
| BLF242 | 9338 170 30112 | BLF242,112 | Rochester Electronics | Buy | Not available |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| HF-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 | 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 | |
|---|---|---|---|
| BLF242 14 V 10 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF242 28 V 10 mA S-parameter data | S-parameter | 2012-06-08 |