The ESDAHD712BE2 is designed for asymmetrical (12V to -7V) protection in multi-point data transmission standard RS-485 applications. The ESDAHD712BE2 can be used to protect devices from transient voltages resulting from electrostatic discharge (ESD), electrical fast transients (EFT), and lightning induced surges.

Features and Benefits
  • Peak pulse power 500W @ 8/20us waveform
  • IEC 61000-4-2 (ESD) ±30kV(air), ±30kV(contact)
  • IEC 61000-4-4 (EFT) 40A (5/50ns)
  • IEC 61000-4-5 (Lightning) 19A (8/20μs)
  • Protects two +12V to -7V lines
  • Low capacitance
  • Low leakage current
  • Low clamping voltage
  • Meet MSL level1
  • Halogen free and RoHS compliant
  • Protection of RS-485 transceivers with extended common-mode range
  • Security systems
  • Automatic Teller Machines
  • HFC systems
  • Networks
Quality, reliability & chemical content
Type Number Symbol Parameter Conditions Pin 1 to Pin 3 and Pin 2 to 3
(12V TVS)
Pin 3 to Pin 1 and Pin 3 to 2
(7V TVS)
Min Typ Max Min Typ Max  
   ESDAHD712BE2 VRWM  reverse working voltage  Pin3 to 1 or Pin2 to 1     12     7 V
VBR  breakdown voltage  IT = 1 mA 13.3     7.5     V
VC  clamping voltage  IPP = 5 A; 8/20μs waveform     22     15 V
 IPP = 19 A; 8/20μs waveform     30     18  
IR  reverse leakage  VR = VRWM     1     20 μA
CJ  Junction Capacitance  VR = 0 V; f = 1MHz     75     75 pF
 VR = VRWM; f = 1MHz   45     45   pF


Component Structure Drawings

Wight (mg)

Material group

Chemical Element substance name

Chemical Element substance Weight Percentage(wt%)
CAS no#
Wight (mg)
1 Chip 0.8102 Si Si 98.00% 7440-21-3 0.8102
Ti 0.01% 7440-32-6
Ni 0.01% 7440-02-0
Ag 1.97% 7440-22-4
Au 0.01% 7740-57-5
2 Bonding wire 0.0187 Cu Alloy Cu 100.00% 7440-50-8 0.0187
3 Lead Frame 3.1695 Ni,Fe Ni 40.84% 7440-02-0 3.1695
Fe 54.66% 7439-89-6
Ag 4.50% 7440-22-4
4 Epoxy Molding 4.0165 Epoxy Resin Silica 75.00% 7631-86-9 4.0165
Epoxy Resin 15.00% 24969-06-0
Phenol Resin 8.00% 9003-35-4
Zinc Borate 1.95% 12513-27-8
Carbon BLACK 0.05% 1333-86-4
5 Tin ingot 0.0845 Sn Sn 100.00% 7440-31-5 0.0845
  Total wight(mg) 8.10          

Chemical Content - ESDAHD712BE2

As a proactive and sustainable company, WeEn Semiconductors has decided to publish chemical content information of its product portfolio through direct Internet access. With this information, we can provide data to our customers to facilitate any assessment regarding compliance to the RoHS directive and lead-free status. WeEn Semiconductors has set a standard in the semiconductor business with this detailed level of data, directly retrieved from its general product database. WeEn Semiconductors products are compliant to the EU Directives RoHS, ELV and the China RoHS.


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