UHF power LDMOS transistor
A 1000 W LDMOS RF power transistor for asymmetrical broadcast Doherty transmitter applications which operates at 180 W DVB-T average power. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications in the frequency range from 400 MHz to 860 MHz.
Features and benefits
- Designed for asymmetric Doherty operation
- Very high efficiency enabling air cooled high power transmitters
- Integrated ESD protection
- Excellent ruggedness
- High power gain
- Excellent reliability
- Easy power control
- For RoHS compliance see the product details on the Ampleon website
Applications
- Broadcast transmitter applications in the UHF band
- Digital broadcasting
- Applicable at frequencies from 400 MHz to 860 MHz
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 400 | 860 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 1000 | W | |||
| Test signal: DVB-T (8k OFDM), Doherty operation | ||||||
| VDS | drain-source voltage | [0] | 50 | V | ||
| Gp | power gain | f = 550 MHz [0] | 18.6 | 20 | dB | |
| ηD | drain efficiency | f = 550 MHz [0] | 50 | 52 | % | |
| PL(AV) | average output power | f = 550 MHz [0] | 180 | W | ||
| IDq | quiescent drain current | peak section: VGS = 1.3 V below VGS(th) (peak) [0] | 600 | mA | ||
| PAR | peak-to-average ratio | f = 550 MHz [0] | 6.9 | 7.4 | dB | |
Package / Packing
| Type number | Package | Outline version | Reflow-/Wave soldering |
Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|---|
| BLF989ES | SOT539BN (SOT539BN) |
sot539bn_po | Tray, 20-fold; non-dry pack | Active | Standard Marking |
BLF989ESU (9349 602 22112) |
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 |
|---|---|---|---|---|---|
| BLF989ES | 9349 602 22112 | BLF989ESU | DigiKey | Buy | Request samples |
| RFMW | Buy |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF989ES | 9349 602 22112 | BLF989ESU | DigiKey | Buy | Request samples |
| RFMW | Buy |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| UHF power LDMOS transistor | Data sheet | 2022-02-17 | |
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2024-05-23 | |
| Measurement results of an A-symmetric Ultra Wideband Doherty design with BLF989E for 470 to 700 MHz | Report | 2020-01-16 | |
| 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 | |
|---|---|---|---|
| BLF989E(S) Model for ADS (Keysight Advanced Design System) | Simulation model | 2023-05-22 | |
| Printed-Circuit Board (PCB) BLF989E(S) (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 |