The LM501202-L-C-300 Surface Mount Silicon PIN Diode Limiter is a surface mount, passive two-stage
power limiter which can operate over the frequency range of 400 MHz to 2.5 GHz. It is manufactured using
MACOM's proven hybrid manufacturing process incorporating PIN Diodes and passive devices integrated
onto a ceramic substrate. This low profile, compact, (8 mm L x 5 mm W x 2.5 mm H) surface mount
component offers outstanding small and large signal performance. This product is designed for optimal
small signal insertion loss for very low receiver noise figure and excellent large-input-signal flat leakage
power for effective receiver protection from 400 MHz to 2.5 GHz.
The very low thermal resistance (< 70 ºC/W ) of the PIN diodes in this device enables it to reliably handle
RF incident power levels up to 37 dBm CW and RF peak incident power levels up to 51 dBm (1 µs pulse
width, 0.1% duty cycle) at TA = 85 ºC. The I layer thickness of the output stage is selected to produce flat
leakage of 21 dBm typical and spike leakage energy of 0.2 ergs, typical. No external control signals are
required. This limiter module includes internal DC blocking capacitors in the RF signal path, as well as an
internal DC return path.
The LM501202-L-C-300 limiter is ideal for receiver protection in octave band radar applications in the 400
MHz to 2.5 GHz range which utilize high volume, surface mount, solder re-flow manufacturing. These
products are durable and capable of reliably operating in military, commercial, and industrial environments
The devices are RoHS compliant and are available in tube or tape-reel.