The DS9503 is an ESD protection diode with high avalanche voltage, low leakage current and low capacitance, which avoids signal attenuation. It is compatible with all 5V logic families, uses a space-saving, low inductance TSOC surface mount package and has on-chip 5Ω resistors for isolation at both anode and cathode terminals. It also has an industrial temperature range.
The DS9503 is designed as an ESD protection device for 1‑Wire MicroLAN interfaces. It integrates two 5 Ω isolation resistors on the chip, providing high‑impedance isolation during ESD events while maintaining normal Zener diode behavior in regular operation. The device offers a snap‑back voltage characteristic, high avalanche voltage, and low leakage to avoid signal attenuation, and it is compatible with all 5 V logic families.
Technical data include absolute maximum ratings, electrical characteristics such as avalanche voltage (7.4 V‑11.05 V), trigger voltage (10 V‑11 V), leakage current (30 nA‑100 nA), isolation resistance (5 Ω), and junction capacitance (40 pF at 5 V). The package is a lead‑free, RoHS‑compliant 6‑lead TSOC suitable for space‑saving, low‑inductance surface‑mount applications.
| Avalanche Voltage (VAV) | 7.4 – 11.05 V |
|---|---|
| Trigger Voltage (VTRIGGER) | 10 – 11 V |
| Leakage Current (IL) | 30 – 100 nA |
| Isolation Resistance (RI) | 5 Ω |
| Junction Capacitance at 5 V (CJ5) | 40 pF |
| Continuous DC Current Through Package | 80 mA |
The DS9503 provides an on‑chip isolation resistance of 5 Ω.
The maximum continuous DC current through the package is 80 mA.
It operates from –40 °C to +85 °C.