Ampleon has released a comprehensive portfolio of overmoulded plastic (OMP) Rugged RF power transistors based on LDMOS technology. These transisitors are targeted at manufacturers of broadcast and ISM transmitters or generators. Target markets for the BLP05H6xxxXR series transistors are FM/VHF radio and TV broadcasting, and industrial, scientific and medical RF power generators. Ranging in power from 35W up to 700W CW (continuous wave), these extremely rugged RF power transistors utilise the same SOT1223 package outline and can be used in any RF power application in the HF to 600MHz frequency range.
These LDMOS Transistors are able to withstand extreme load mismatch conditions and feture a high efficiency, so energy usage and operating costs are reduced. As less cooling is needed, system requirements are simpler, which is beneficial for overall bill of material costs (BOM). Specific examples of end equipment applications include CO2 plasma lasers, MRI medical scanners, particle accelerators, plasma lighting, FM radio, and VHF digital TV.
Ampleon has produced a demonstration circuit of the BLP05H635XR as an MRI (magnetic resonance imaging) driver amplifier for a high power final output stage using multiple BLF188XR transistors. In this example pulsed power is provided, but the part is also eminently suitable for full CW applications up to 35W at a gain of 29dB with an efficiency of greater than 75%.
The OMP product range offers our customers in the HF to 600 MHz marketplace a full range of extremely rugged parts that not only offer excellent performance, but by using the same overmoulded packaging, can considerably reduce BOM costs. It’s actually a comprehensive portfolio of parts that will give customers a design and application advantage. Moreover, these devices are excellent replacements for products out there that still use legacy Bipolar/VDMOS technology. BLP05H6xxXR OMP’s package addresses the cost effectiveness advantage that these typically have over Bipolar/VDMOS devices using ceramic packages.
Ampleon’s cost effective, BLP05H6xxxXR series OMP transistors are offered in a wide power range suitable for a broad range of CW/pulsed power and extreme ruggedness requirements. The parts up to 350 W are available now from Ampleon distributors and a powerful 700 W transistor will be released in Q2 2016.
