HF / VHF power LDMOS transistor
A 1200 W LDMOS power transistor for broadcast applications and industrial applications in the HF to 700 MHz band.
Features and benefits
- Easy power control
- Integrated ESD protection
- Excellent ruggedness
- High efficiency
- Excellent thermal stability
- Designed for broadband operation (10 MHz to 700 MHz)
- For RoHS compliance see the product details on the Ampleon website
Applications
- Industrial, scientific and medical applications
- Broadcast transmitter applications
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 10 | 700 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 1200 | W | |||
| Test signal: CW pulsed | ||||||
| VDS | drain-source voltage | PL = 1200 W [0] | 50 | V | ||
| Gp | power gain | PL = 1200 W [0] | 23 | 24.5 | dB | |
| ηD | drain efficiency | PL = 1200 W [0] | 78 | 80.6 | % | |
| RLin | input return loss | PL = 1200 W [0] | -20 | -12 | dB | |
Package / Packing
| Type number | Package | Outline version | Reflow-/Wave soldering |
Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|---|
| BLF978P | SOT539A (SOT539A) |
sot539a_po | Bulk Pack | Active | Standard Marking |
BLF978PU (9349 602 93112) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D1 | drain1 |
|
|
| 2 | D2 | drain2 | ||
| 3 | G1 | gate1 | ||
| 4 | G2 | gate2 | ||
| 5 | S | source |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF978P | 9349 602 93112 | BLF978PU | DigiKey | Buy | Request samples |
| RFMW | Buy |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF978P | 9349 602 93112 | BLF978PU | DigiKey | Buy | Request samples |
| RFMW | Buy |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| HF / VHF power LDMOS transistor | Data sheet | 2022-06-13 | |
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2024-05-23 | |
| Measurement results of a demoboard design with BLF978P optimized for 352 MHz | Report | 2020-10-30 | |
| Measurement results of a class-AB design for BLF978P in a demo optimized for 500 MHz | Report | 2021-03-26 | |
| Measurement results of BLF978P in Board #AR202059 tuned for 500 MHz at 45 V | Report | 2022-04-26 | |
| Measurement results of a Class-AB design with BLF978P in a demo optimized for 644-650 MHz | Report | 2021-04-19 | |
| Measurement results of a Class-AB design for the 352 MHz band with the BLF978P | Report | 2022-02-03 | |
| RF power solutions for ISM, broadcast, navigation and safety radio applications | Brochure | 2024-10-25 | |
| 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 |
Recommended line-up
Design support
| Title | Type | Date | |
|---|---|---|---|
| BLF978P Model for ADS (Keysight Advanced Design System) | Simulation model | 2020-04-08 | |
| Printed-Circuit Board (PCB) BLF978P (Data sheet) | Design support | 2020-04-08 | |
| Model Library for Cadence AWR Microwave Office® | Simulation model | 2023-01-02 | |
| Model Library Manual for Cadence AWR Microwave Office® | Simulation model | 2023-01-02 | |
| Simulation Example for Cadence AWR Microwave Office® | Simulation model | 2023-01-02 |