Power LDMOS transistor
A 170 W LDMOS transistor for broadcast, ISM, avionics and non-cellular communications applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications in the frequency range from HF to 1400 MHz.
Features and benefits
- Designed for broadband operation
- High efficiency
- Integrated dual sided ESD protection
- Excellent ruggedness
- High power gain
- Excellent reliability
- Easy power control
- Excellent stability
- For RoHS compliance see the product details on the Ampleon website
Applications
- Broadcast transmitter applications
- Industrial, scientific and medical applications
- Avionics applications up to 1400 MHz
- Non-cellular communications applications
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 1 | 1400 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 170 | W | |||
| Test signal: Pulsed RF | ||||||
| VDS | drain-source voltage | PL = 170 W [0] | 50 | V | ||
| Gp | power gain | PL = 170 W [0] | 22.5 | 24 | dB | |
| RLin | input return loss | PL = 170 W [0] | -13 | -8 | dB | |
| ηD | drain efficiency | PL = 170 W [0] | 67 | 71 | % | |
Package / Packing
| Type number | Package | Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF981S | SOT467B (SOT467B) |
sot467b_po | Tray; 20-fold; non-dry pack | Active | Standard Marking |
BLF981SU (9349 610 38112) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D | drain |
|
|
| 2 | G | gate | ||
| 3 | S | source [1] |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF981S | 9349 610 38112 | BLF981SU | DigiKey | Buy | Request samples |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| Power LDMOS transistor | Data sheet | 2025-01-10 | |
| 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 | |
|---|---|---|---|
| Printed-Circuit Board (PCB) BLP981(S) (Data sheet) | Design support | 2025-02-03 | |
| BLF981S Model for ADS (Keysight Advanced Design System) | Simulation model | 2025-02-27 |