Share to:
BLF989E
BLF989E
| Part Number | BLF989E |
|---|---|
| Manufacturer | Ampleon |
| Category | Discrete Semiconductor Products / Transistors > RF FETs, MOSFETs |
| Description | 1000W LDMOS Power Transistor, 400 MHz to 860 MHz UHF Band, 50V Supply, SOT539B Flange Ceramic Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The BLF989E is Ampleon’s 1000W N‑channel LDMOS RF transistor, optimized for asymmetric Doherty UHF broadcast transmitters. Operating at 400‑860 MHz with 50V supply, it delivers high gain, efficiency and strong ruggedness. Packaged in SOT539B ceramic flange with built‑in input matching and ESD protection, it suits air‑cooled digital & analog TV transmitter systems.
Core Advantages
1000W UHF High‑Power Output
Delivers 1000W peak RF power for 400‑860 MHz broadcast applications, reducing device count for transmitter designs.
High Efficiency & Good Linearity
Advanced 50V LDMOS process provides high PAE and low distortion, meeting digital TV broadcast requirements.
Built‑in Matching & ESD Protection
Integrated input matching simplifies PCB layout; ESD protection improves handling reliability.
Excellent Rugged Thermal Design
Low‑thermal‑resistance SOT539B package, tolerates 10:1 VSWR load mismatch for continuous high‑power work.
Key Specifications
| Brand | Ampleon |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | SOT539B / Flanged Ceramic Package |
| Mounting Type | Chassis Mount / Bolt‑Down Flange Mount |
| Surface Marking / Silkscreen | BLF989E / Ampleon Logo |
| Transistor Technology | LDMOS (N‑Channel Enhancement‑Mode) |
| Operating Frequency Range | 400 MHz to 860 MHz (UHF Band) |
| Peak Output Power (P1dB / Peak) | 1000 W |
| Power Gain (Gps) | > 19 dB (Typical at 860 MHz) |
| Drain Efficiency (ηD) | > 50% (Typical) |
| Drain‑Source Voltage (VDSS) | 108 V (Max Rating), 50V (Nominal Operating) |
| Gate‑Source Voltage (VGS) | -0.5 V to +11 V |
| VSWR Ruggedness | Up to 10:1 Load Mismatch Tolerance |
| Operating Junction Temperature (Tj) | Up to +200°C |
| Storage Temperature Range | -65°C ~ +150°C |
| Thermal Resistance Rth(j‑c) | 0.12 K/W (Junction to Case) |
Typical Applications
- Digital UHF TV Transmitters (DVB‑T, DVB‑T2, ATSC, ISDB‑T)
- Analog & Digital Asymmetric Doherty Broadcast Transmitters
- Air‑Cooled High‑Power UHF Broadcast Amplifier Systems
- UHF Band Industrial RF Power Amplifier Equipment
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the operating frequency of BLF989E?
A: 400 MHz‑860 MHz, designed for UHF TV broadcast systems.
Q2: What is the peak output power?
A: Up to 1000 W peak RF power under 50 V supply voltage.
Q3: Difference between BLF989E, BLF989EU and BLF989ESU?
A: Electrical specs are identical. BLF989EU: SOT‑539A with mounting lugs; BLF989E / BLF989ESU: SOT‑539B lug‑less flat flange. PCB footprint differs, cannot direct swap without board modification.
Q4: Are there drop‑in replacement models?
A: No fully pin‑to‑pin compatible substitute. Match frequency, power and package when replacing; circuit re‑tuning is required.
Q5: What are the mounting requirements for SOT539B?
A: Bolt firmly onto flat high‑conductivity heatsink with thermal grease to guarantee heat dissipation for continuous high‑power operation.
Q6: How to get datasheet, reference circuit or bulk price?
A: Submit quick inquiry for datasheet, reference layout, stock check and volume quotation.
Related Products
