MB-3 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – Fits SOT-143 amplifier packages

MicroAmp MB-3 Circuit Board
For SOT-143 Amplifiers
FEATURES
• Fits SOT-143 amplifier packages
• Input/Output blocking capacitors
• RF bypass and bias capacitors
• Dual bias resistors
• RF bias inductor
• RO-4350 board material
• Fits MicroAmp MH-series housings
The MicroAmp MB-3 circuit board is designed for rapid prototyping of many different RF MMIC amplifiers in SOT-143 4-pin
packages that use a common RF output and bias pin from manufacturers such as Avago (MSA), Mini-Circuits (VAM), and others. This
board will fit the MicroAmp MH series of connectorized housings that allow it to be used as a single amplifier stage or cascaded with
other MicroAmp boards for added versatility. Boards are fabricated from a high-performance 13 mil thick RO-4350 laminate with
RoHS compatible ENIG plating (electroless nickel/immersion gold) on both the component side and the solid bottom ground plane.
The board measures 0.490" x 0.590" and mounts into the housing with four #1-72 screws. Amplifiers can be easily designed and
assembled with standard surface-mount passive components. It includes provisions for input and output DC blocking capacitors
(0603), RF and bias bypass capacitors (0603/0805), dual bias resistors for flexible thermal management (0805), and a RF bias induc-
tor (0805 or 0603). Pads for the RF connectors allow the SMA center pins to be easily soldered to the board after it is installed into
the housing, as well as a large pad to connect the completed board assembly to the bias feed-through.
AMPLIFIER SCHEMATIC
ASSEMBLY
REF SIZE
C1 0603
C2 0603
C3 0603
C4 0603
C5 0805
R1 0805
R2 0805
L1 0805/0603
U1 SOT-143
J1
J2
J3
FUNCTION
DC block
DC block
Bypass
Bypass
Bypass
DC bias
DC bias
RF bias
Amplifier
Input
Output
Bias
For additional product information, please visit www.twinind.com
Contact information: 925-866-8946 (phone) 925-866-8937 (fax) [e-mail]