The PAD1 is a low leakage Pico-AmpDiodepackaged in hermeticTO-72

The PAD1 extremely low-leakage diode provides a superior alternative to conventional diode
technology when reverse current (leakage) must be minimized. The PAD1 features a leakage current of -1 pA and is well suited for use in applications such as input protection for operational amplifiers.

PAD1 Benefits:
Negligible Circuit Leakage Contribution
Circuit “Transparent” Except to Shunt High-Frequency Spikes
Simplicity of Operation

PAD1 Applications:
Op Amp Input Protection
Multiplexer Overvoltage Protection