1 Features
• IEC 61000-4-2 ESD protection:
– ±30kV contact discharge
– ±30kV air gap discharge
• IEC 61000-4-5 surge protection:
– 6.5A (8/20μs)
– Clamping voltage: 71V at 6.5A (8/20μs)
• IO Capacitance: 4.3pF (typical)
• DC breakdown voltage: 37.8V (minimum)
• Ultra low leakage current: 10nA (maximum)
• ESD clamping voltage: 56V at 16A TLP
• Industrial temperature range: –55°C to +150°C
• Industry standard SOD-323 leaded package
(2.5mm × 1.2mm)

2 Applications
• I/O Protection
• Medical & Healthcare
• Appliances
• Lighting
• Test & Measurement

3 Description
The ESD851 is a bidirectional ESD protection
diode designed for clamping harmful transients
such as ESD and surge. The ESD851 is rated to
dissipate ESD strikes up to ±30kV (contact and air
gap discharge), which exceeds the maximum level
specified in the IEC 61000-4-2 international standard
(Level 4). For surges, the device can clamp 8/20μs
surges with peak currents up to 6.5A in accordance
with the IEC 61000-4-5 standard.
This device also features a 4.3pF (typical) IO
capacitance enabling it to protect data lines. The
low dynamic resistance and low clamping voltage
provides system level protection against transient
events.
The ESD851 is offered in the industry standard,
leaded SOD-323 package to enable easy
solderability.