EV1HMC321ALP4E-SP8T switch Broken after one time measurement

Hello
I bought two switches EV1HMC321ALP4E (EVAL BOARD FOR HMC321ALP4E). I could measure them only once. And then both of them broken. it is the VDD that broken (I know because the DC power supply indicator goes red after broken and no RF output  ). Would you please tell me or replace me the product? I used ESD protection band in hand always. 
I found Another SP8T switch-part number , price is higer 1127-3263-ND, EV1HMC322ALP4. Would you please say why its price is different?  is better that no problem with broken.
 
I need to solve it in urgent.
Would you please help me regarding this problem.
 
Thanks
Afreen
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  • 0
    •  Analog Employees 
    on Aug 21, 2019 9:07 AM

    Hi,

    What measurement have you done before the parts are broken? Have you ever applied high logic to any of control inputs when Vdd supply is not powered up? if yes ESD protection diodes connected from control inputs to Vdd could be forward biased and damaged. This could be why Vdd draws excessive current. 

    Best.

Reply
  • 0
    •  Analog Employees 
    on Aug 21, 2019 9:07 AM

    Hi,

    What measurement have you done before the parts are broken? Have you ever applied high logic to any of control inputs when Vdd supply is not powered up? if yes ESD protection diodes connected from control inputs to Vdd could be forward biased and damaged. This could be why Vdd draws excessive current. 

    Best.

Children