PAD Series DFN Package

PAD Series Ultra-Low Leakage Protection Diodes (Picoamp Level)

The PAD Series ultra-low leakage protection diodes from Linear Systems are precision devices designed for circuits requiring picoamp-level leakage performance, high stability, and reliable signal protection. These diodes serve as direct drop-in replacements for the Siliconix-Vishay PAD series, making them ideal for legacy designs, upgrades, and new precision analog applications.

Engineered for ultra-low current environments, the PAD Series is widely used in high-sensitivity measurement circuits, instrumentation front ends, and precision sensing systems where leakage current directly affects accuracy.

Available in multiple industry-standard, RoHS-compliant packages — DFN-8L, TO-72, TO-92, SOT-23, and bare die — the series supports flexible PCB layouts and assembly processes across commercial, industrial, and scientific designs.

Key Features

• Ultra-low leakage current (picoamp range)

• Direct replacement for Siliconix/Vishay PAD devices

• High stability for precision analog circuits

• Multiple package options including surface-mount and through-hole

• Available as packaged devices or bare die

• RoHS compliant

Applications

The PAD Series is ideal for ultra-low current protection and measurement circuits, including:

• electrometers

• photodiode protection circuits

• precision instrumentation

• medical sensing equipment

• charge amplifiers

• low-current measurement front ends

• scientific and laboratory instruments

Advanced Screening Options

Linear Systems offers custom screening and parameter selection across our product portfolio — including JFETs, bipolar transistors, MOSFETs, current regulators, and diodes — for applications requiring enhanced performance, tighter limits, or reliability assurance.

Screening can be performed on any datasheet parameter and includes full package pin-out verification.

Contact our technical team to discuss requirements: [email protected]

📞 (510) 490-9160

Minimum order quantities apply for specialized screening services.

Ordering Options