Human-body model
The human-body model (HBM) is the most commonly used model for characterizing the susceptibility of an electronic device to damage from electrostatic discharge (ESD). The model is a simulation of the discharge which might occur when a human touches an electronic device.
The HBM definition most widely used is the test model defined in the United States military standard, MIL-STD-883, Method 3015.8, Electrostatic Discharge Sensitivity Classification. This method establishes a simplified equivalent electrical circuit and the necessary test procedures required to model an HBM ESD event.
An internationally widely used standard is JEDEC standard JS-001.
HBM is used primarily for manufacturing environments. A similar standard, IEC 61000-4-2, is used for system level testing.
Model
In both JS-001-2012 and MIL-STD-883H the charged human body is modeled by a 100 pF capacitor and a 1500 ohm discharging resistance. During testing, the capacitor is fully charged to several kilovolts (2 kV, 4 kV, 6 kV and 8 kV are typical standard levels) and then discharged through the resistor connected in series to the device under test.
See also
- Machine model (MM)
- Charged-device model (CDM)
- Transmission-line pulse (TLP)
External links
- New Joint Standard JS-001-2012 download page.
- New Joint Standard: ANSI/ESDA/JEDEC JS-001-2011, For Electrostatic Discharge Sensitivity Testing, Human Body Model (HBM) - Component Level
- New Joint Standard JS-001-2011 info.
- MIL-SDT-883 overview page, all revisions
- Human Body Model Overview