Advantech BB-UH401

Single Port USB Isolator

  • 15 kV ESD Protection
  • -40 to 80°C Operating Temperature
  • High Retention USB Connectors
  • Ultra-Compact
  • USB Bus Powered
  • USB Cable Included


At just 50.8mm x 43.18mm x 20.32mm (2.0 x 1.7 x 0.8 inches), these litle isolators pack a powerful punch against electrical noise, surges and spikes – up to 4kV isolation. Protect expensive PCs and equipment from damaging electrical storms, power surges and other high EMI/RFI disturbances. This isolation barrier eliminates ground loops which are disruptive in measurement applications.

Part Number USB Speed Isolation
BB-UH401 Full (12 Mbps) 4 kV
Standards USB 1.1, 12 Mbps (UH401 & UH401-2KV) or 1.5 Mbps
(UH401SL & UH401SL-2KV)
Note: These devices are transparent to the operating system, require no software drivers and will not be enumerated in device manager.
USB Ports High Retention USB Type B (Upstream) , Type A (Downstream), Minimum withdrawal force of 15 Newtons (~3.4 lbs-force)
LED Indicators Power from USB bus
Input Voltage Standard USB bus power (5VDC)
Downstream Power Provided Up to 100mA with full power upstream connection
Isolation 4KV
Operating Temperature -40 to 80° C (-40 to 176° F)
MTBF 1,049,851 hours
MTBF Calculation MIL 217F
Parts count reliability prediction
Enclosure IP30 plastic case
Dimensions 4.32 x 5.08 x 2.03 cm (1.7 x 2.0 x 0.8 in)
Approvals / Certifications
Emissions FCC Class A, CISPR Class A (EN55022)
CE EN61000-6-2:2005 (Heavy Industry)
EN61000-4-2:2008 (ESD +/-8kV Contact, +/-15kV Air
EN61000-4-3:2006 (RI) 10V/m, 80-1000MHz; 3V/m, 1.3 to 2.7 GHz
EN61000-4-4:2004 (EFT Burst) +/-2kV DC ports; +/-1kV signal ports
EN61000-4-5:2005 (Surge) +/-500V DC ports ; +/-1kV signal ports
EN61000-4-6:2005 (CI) 10Vrms, 0.15 to 80 MHz
EN61000-4-8:2001 (Magnetic) 10A/m, 50Hz & 60Hz

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