This device has been transferred from Ampleon to Flip Electronics.
UHF power LDMOS transistor
A 900 W LDMOS RF power transistor for broadcast Doherty and class AB transmitter applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications.
Features and benefits
- Designed for symmetric and asymmetric Doherty operation
- High efficiency
- Integrated dual sided ESD protection
- Excellent ruggedness
- High power gain
- Excellent reliability
- Easy power control
- Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)
Applications
- Broadcast transmitter applications in the UHF band
- Digital broadcasting
- Industrial, Scientific and Medical applications
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 470 | 860 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 900 | W | |||
| Test signal: DVB-T (8k OFDM) | ||||||
| VDS | drain-source voltage | 590-690 MHz [0] | 50 | V | ||
| Gp | power gain | 590-690 MHz [0] | 18 | dB | ||
| ηD | drain efficiency | 590-690 MHz [0] | 33 | % | ||
| PL(AV) | average output power | 590-690 MHz [0] | 180 | W | ||
| IMDshldr | intermodulation distortion shoulder attenuation | 590-690 MHz [0] | -30 | dBc | ||
| PAR | peak-to-average ratio | 590-690 MHz [0] | 8 [1] | dB | ||
Package / Packing
| Type number | Package | Outline version | Reflow-/Wave soldering |
Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|---|
| BLF898S | SOT539B (SOT539B) |
sot539b_po | Bulk Pack | Transferred | Standard Marking |
BLF898SU (9349 600 34112) |
|
| Reel 13" Q1/T1 | Transferred | Standard Marking |
BLF898SJ (9349 600 34118) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D1 | drain1 (peak) |
|
|
| 2 | D2 | drain2 (main) | ||
| 3 | G1 | gate1 (peak) | ||
| 4 | G2 | gate2 (main) | ||
| 5 | S | source |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2024-05-23 | |
| Ampleon’s Ultra Wideband Doherty (UWD) for TV transmitters | White paper | 2016-09-09 | |
| UHF power LDMOS transistor | Data sheet | 2017-07-25 | |
| 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 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| Printed-Circuit Board (PCB) BLF898(S) (Data sheet) | Design support | 2018-08-20 | |
| BLF898 Model for ADS (Keysight Advanced Design System) | Simulation model | 2018-11-28 |