The Eclipse DT0112A3 is a planar tunnel diode operating from 0.1 to 12.4 GHz, has negative polarity and is available with SMA male/female connectors.
No bias required
Extremely low video output response
Extremely fast pulse response (5 nSec risetime typ.)
Excellent frequency response
Negative polarity is standard
High reliability hermetically sealed coax
Frequency Range GHz: 0.1 to 12.4
Voltage Sensitivity mV/mW: 450 typ.
Tss dB, Note 1: -50.0 typ,
VSWR: 2.5:1 typ.
Flatness ±dB: 1.00 typ.
Video Cap pF: 470 typ.
For more info, please see data sheet