 
BLF988S
Download datasheetThis device has been transferred from Ampleon to Flip Electronics.
Power LDMOS transistor
A 600 W LDMOS RF power transistor for transmitter applications and industrial applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications.
Features and benefits
- Excellent ruggedness (VSWR ≥ 40 : 1 through all phases)
- Optimum thermal behavior and reliability, Rth(j-c) = 0.15 K/W
- High power gain
- High efficiency
- Designed for broadband operation (400 MHz to 1000 MHz)
- Internal input matching for high gain and optimum broadband operation
- Excellent reliability
- Easy power control
- Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances
Applications
- Communication transmitter applications
- Industrial applications
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit | 
|---|---|---|---|---|---|---|
| frange | frequency range | 500 | 1000 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 600 | W | |||
| Test signal: Pulsed, class-AB | ||||||
| Gp | power gain | VDS = 50 V; f = 860 MHz [0] | 17.2 | 19.8 | dB | |
| ηD | drain efficiency | VDS = 50 V; f = 860 MHz; IDq = 1.3 A [0] | 54 | 58 | % | |
| PL(M) | peak output power | f = 860 MHz [0] | 600 | W | ||
Package / Packing
| Type number | Package type, (Package outline) | Outline version | Packing | Product status | Marking | Orderable part number, (Ordering code (12NC)) | 
|---|---|---|---|---|---|---|
| BLF988S | ACC-1230 (SOT539B) | sot539b_po | Bulk Pack | Transferred | Standard Marking | BLF988S,112 (9340 662 87112) | 
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol | 
|---|---|---|---|---|
| 1 | D1 | drain1 |   |   | 
| 2 | D2 | drain2 | ||
| 3 | G1 | gate1 | ||
| 4 | G2 | gate2 | ||
| 5 | S | source [1] | 
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples | 
|---|---|---|---|---|---|
| BLF988S | 9340 662 87112 | BLF988S,112 | Flip Electronics | Buy | Not available | 
Documentation
| Title | Type | Date | |
|---|---|---|---|
| Power LDMOS transistor | Data sheet | 2015-12-07 | |
| 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 | 2025-06-03 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2025-06-12 | |
| Packages for RF power transistors | Leaflet | 2025-06-20 | 
Design support
| Title | Type | Date | |
|---|---|---|---|
| Printed-Circuit Board (PCB) BLF988(S) (Data sheet) | Design support | 2013-05-17 | |
| 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 | |
| BLF988 Model for ADS 2016 (Keysight Advanced Design System) | Simulation model | 2017-01-04 |