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 3015.9, 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 100Â pF capacitor and a 1500 ohm discharging resistance. During testing, the capacitor is fully charged to several kilovolts (2Â kV, 4Â kV, 6Â kV and 8Â 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