HFA3135 General Description
The HFA3134 and HFA3135 are Ultra High Frequency Transistor pairs that are fabricated with Intersil Corporation's complementary bipolar UHF-1X process. The NPN transistors exhibit an fT of 8.5GHz, while the PNP transistors have an fT of 7GHz. Both types exhibit low noise, making them ideal for high frequency amplifier and mixer applications.
Both arrays are matched high frequency transistor pairs. The matching simplifies DC bias problems and it minimizes imbalances in differential amplifier configurations. Their high fT enables the design of UHF amplifiers which exhibit exceptional stability.
HFA3135 Maximum Ratings
Collector to Emitter Voltage (RB 10kΩ to GND) . . . . . . . . . .11V
Collector to Base Voltage (Open Emitter) . . . . . . . . . . . . . . . .12V
Emitter to Base Voltage (Reverse Bias). . . . . . . . . . . . . . . . 4.5V
Collector Current . . . . . . . . . . . . . . . . . . . . ..14mA at TJ =150
Collector Current . . . . . . . . . . . . . . . . . . . . ..26mA at TJ =125
Base Current (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . .1.7mA
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..400V
(Per MIL-STD-883 Method 3015.7)
HFA3135 Features
• NPN Transistor (fT) . . . . . . . . . . . . . . . . . . . . . . . . .8.5GHz
• NPN Current Gain (hFE). . . . . . . . . . . . . . . . . . . . . . . .100
• NPN Noise Figure (50Ω) at 1.0GHz . . . . . . . . . . . . . 2.6dB
• PNP Transistor (fT) . . . . . . . . . . . . . . . . . . . . . . . . . . 7GHz
• PNP Current Gain (hFE) . . . . . . . . . . . . . . . . . . . . . . . . .57
• PNP Noise Figure (50Ω) at 900MHz . . . . . . . . . . . . 4.6dB
• Small Package (EIAJ-SC74 Compliant) . . . . . . . SOT23-6
HFA3135 Typical Application
• VHF/UHF Amplifiers
• VHF/UHF Mixers
• IF Converters
• Synchronous Detectors
HFA3135 Connection Diagram
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