BLF542
Download datasheetThis device has been transferred from Ampleon to Rochester Electronics.
UHF power MOS transistor
N-channel enhancement mode vertical D-MOS power transistor encapsulated in a 6-lead, SOT171A flange package with a ceramic cap. All leads are isolated from the flange.
Features and benefits
- High power gain
- Easy power control
- Gold metallization
- Good thermal stability
- Designed for broadband operation.
- Withstands full load mismatch
Applications
- Large signal amplifier applications in the UHF frequency range
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 100 | 500 | 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 | 16.5 | dB | |
| ηD | drain efficiency | VDS = 28 V; f = 500 MHz; IDq = 50 mA | 50 | 59 | % | |
| PL | output power | 5 | W | |||
Package / Packing
| Type number | Package | Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF542 | CDFM6 (SOT171A) |
sot171a_po | Bulk Pack | Transferred | Standard Marking |
BLF542,112 (9340 066 60112) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | S | source |
|
|
| 2 | S | source | ||
| 3 | G | gate | ||
| 4 | D | drain | ||
| 5 | S | source | ||
| 6 | S | source |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF542 | 9340 066 60112 | BLF542,112 | Rochester Electronics | Buy | Not available |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| UHF 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 | |
|---|---|---|---|
| BLF542 14 V 10 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF542 14 V 50 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF542 28 V 10 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF542 28 V 50 mA S-parameter data | S-parameter | 2012-06-08 |