BLF183XR
| Part Number | BLF183XR |
|---|---|
| Manufacturer | Ampleon / NXP Semiconductors |
| Category | Discrete Semiconductor Products > Transistors – FETs, MOSFETs – RF |
| Description | 350W LDMOS Power Transistor, Extremely Rugged (XR), HF to 600 MHz, Flanged SOT1121A Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
BLF183XR is Ampleon 350W rugged LDMOS RF transistor for HF‑600 MHz broadcast & ISM equipment. Supports 65:1 full‑phase VSWR withstand, built‑in ESD protection, high efficiency. SOT1121A flanged ceramic package for transmitters, plasma and laser drivers.
Core Advantages
Excellent Anti‑Mismatch
65:1 full‑phase VSWR ruggedness, reduces isolator dependency.
High Power Efficiency
350W CW output, typical 75% drain efficiency, low cooling demand.
Broadband Operation
HF‑600 MHz, fit for broadcast and industrial RF platforms.
High Reliability
ESD protection, flange‑mount package for efficient heat dissipation.
Key Specifications
| Brand | Ampleon / NXP |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | SOT1121A (Flanged Ceramic Power Package with mounting holes) |
| Mounting Type | Chassis Mount / Flange Mount |
| Surface Marking / Silkscreen | BLF183XR Marking |
| Transistor Technology | LDMOS (Lateral Diffused MOS) |
| Frequency Range | HF to 600 MHz |
| Peak/CW Output Power | 350 W CW |
| Power Gain | Typ. 25 dB‑28 dB (Frequency dependent) |
| Drain Efficiency | Typ. 75% |
| Drain‑Source Voltage (Vdss) | 135 V |
| Operating Drain Voltage (Vds) | 50 V Typical |
| VSWR Ruggedness | 65:1 (All phase angles) |
| Thermal Resistance Rth(j‑c) | 0.23 K/W |
| Operating Temperature | ‑40°C ~ +150°C |
Typical Applications
- FM and Digital VHF/UHF Broadcast Transmitters
- Industrial, Scientific, and Medical (ISM) RF Generators
- CO2 Laser Drivers and Plasma Etching Equipment
- Magnetic Resonance Imaging (MRI) RF Amplifiers
- HF/VHF Communications and Radar Power Amplifiers
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 does “XR” stand for in BLF183XR?
A: XR means eXtremely Rugged. It tolerates 65:1 full‑phase VSWR mismatch without device damage.
Q2: What are key electrical specs of BLF183XR?
A: 350W CW output power, typical drain voltage 50V, maximum Vdss rating 135V.
Q3: Difference between BLF183XR and BLF183XRS?
A: Electrical specs are identical. BLF183XR:SOT1121A with mounting holes; BLF183XRS:SOT1121B earless no‑hole. Pin‑to‑pin compatible, only mechanical mounting differs.
Q4: What Ampleon alternative parts are available?
A: BLF182XR (250W lower‑power), BLF184XR (700W higher‑power). Not drop‑in replacements; matching circuit adjustments are required.
Q5: What competing RF transistor can be referenced?
A: MRFE6VP6300H is a comparable competitor. Different pinout and package, cannot direct substitute, circuit redesign is needed.
Q6: What package does BLF183XR adopt?
A: SOT1121A flanged ceramic chassis‑mount package with two mounting holes for heatsink assembly.
Q7: Can BLF183XR run without external isolator?
A: 65:1 ruggedness improves mismatch tolerance. For critical broadcast equipment, an external isolator is still recommended for long‑term reliability.
Q8: How do I get datasheet, model or bulk quotation?
A: Submit quick inquiry for datasheets, simulation models, stock status and volume pricing.

