keyword 3-pole SMD
Product Info Product name: 3SDH4-90
Product code: 11042587

It is mounted on the internal circuit of communication equipment, etc., and is used for the purpose of protecting the equipment from the induced voltage induced on the communication line and signal line.
This is a surface-mount type element that has higher resistance than the conventional 3SD4 type.

Main applications

  • protection of various electronic devices 
  • communication lines
  • switches
  • PBXs
  • telephones
  • fax machines

The same outline as the conventional 3SD4 series, and a common board land pattern. Therefore, there is no need to redesign when switching to this product.

・ Ultra small size and large current resistance
・ Low capacitance (less than 0.5pF)
・ Broadband compatible
・ Excellent heat and mechanical shock due to ceramic envelope
・ Repetitive surge current resistance and Excellent temperature environment characteristics
・ Embodiment taping is suitable for surface mounting

Dimensions  (Unit: mm)
item Measurement condition Performance
DC discharge start voltage 100 V / s 90 V ± 20%
Impulse discharge start voltage 100V / μs 500 V or less
Impulse discharge start voltage 1 kV / μs 600 V or less
Insulation resistance DC 50 V 10000 MΩ or more
Capacitance 1 MHz 1.0 pF or less
DC holdover voltage

ITU-T K. 12 Table 4 Test 1

52 V, 260 Ω

150 ms or less
Impulse current capacity 8/20 μs, 5000 A × 2 +5 times, -5 times
AC current tolerance 50 Hz, 5 A × 2, 1 s 10 times
Impulse life 10/1000 μs, 100A × 2 300 times
mass - 0.3 g