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Need to know the products / latest technology available for Low cost alternative to Telecom DPDT Relays

Dineshkumar Dhanapal
Prodigy 10 points
Other Parts Discussed in Thread: TMUX4827, TMUX9616, TMUX9832, TMUX2889

Dear Sir / Madam - We are in process of finding low cost solution to the existing components in one of the PCBA. We request you to review the below components and let us know , if any low cost solution available with you for replacing these components. 

Manufacturer Name

MPN

Description

Panasonic Electric Works

AGN210A12

RELAY TELECOM DPDT 1A 12V ( Telecom Relay DPDT (2 Form C) Surface Mount)

Fujitsu

FTR-B4GA012Z

Low Signal Relays - PCB Ultra Mini Slim 3VDC

Panasonic Electric Works

AGN200S4H

RELAY TELECOM DPDT 1A 4.5V (Telecom Relay DPDT (2 Form C) Surface Mount)

 

Awaiting your earliest response.

Regards,

Dineshkumar D

Sr.Test Engineer

Philips Global Business Services LLP,

Bangalore , India.

Ph : 8838860700

  • 0
    TI__Mastermind 18135 points

    Hello Dineshkumar,

    If you are looking for a replacement mux that can operate in the same voltage range, then I can recommend the TMUX405x series: https://www.ti.com/lit/ds/symlink/tmux4051.pdf

    The relays you mentioned have very low internal resistance of 100m ohms. If the Ron is a concern I can recommend the TMUX4827: https://www.ti.com/lit/ds/symlink/tmux4827.pdf. Please note it can operate only up to 5.5V, but has an internal resistance if 120m ohms. 

    Please feel free to check out our app note explaining the benefits of replacing a relay with a multiplexer: https://www.ti.com/lit/an/scda036/scda036.pdf

    Thanks,

    Nir 

  • 0 in reply to Nir Gilgur
    Prodigy 10 points

    Hi Nir ,

    Thanks for your response. Are these MUXes can be a replacement for both latching and non-latching type EM signal relays? Please confirm, because the requested replacement for Panasonic relays (AGN210A12 and AGN200S4H) are one is latching type and other one is non-latching type. Please clarify.

    Thanks,

    Dinesh

  • 0 in reply to Dineshkumar Dhanapal
    Prodigy 10 points

    Hi Nir

    It would be great , if we schedule a call and discuss in detail. Please do the needful.

    Regards,

    Dinesh

  • 0 in reply to Dineshkumar Dhanapal
    TI__Mastermind 18135 points

    Hello Dinesh,

    Our devices can replace the non-latching type. For the latch type it depends on the application. Can you please elaborate on it? Our devices are not capable to maintain their last state after a power reset unlike the latch type relays.  

    Thanks,

    Nir

  • 0 in reply to Nir Gilgur
    Prodigy 10 points

    Hi Nir ,

    Thanks for your response. Please find below specific use case of the relays in our application.

    These relays are mainly used for signal switching in medical applications such as in one of the PCBA that belongs to ultrasound scan system. Attached is the schematic snapshot for your clear reference.The annual volume production of the PCBA : approximately around 3000 qty in which each PCBA has 225 Nos of Latching Relays (AGN210A12)  and 9 Nos of Non-Latching Relays (AGN200S4H).

    Please suggest the same functionality alternates to these relays and do the needful.

    Regards,

    DineshRelays Snapshots.docx

  • 0 in reply to Dineshkumar Dhanapal
    TI__Mastermind 18135 points

    Hello Dinesh,

    Sounds great, I can recommend a couple of muxes who are specifically designed for ultrasound applications:

    TMUX9616: https://www.ti.com/lit/ds/symlink/tmux9616.pdf

    TMUX9832: https://www.ti.com/lit/ds/symlink/tmux9832.pdf

    I wanted to clarify something regarding the latching type relays replacement.

    What is the use case in this application for the latch type?

    What I mean is latch type relays are capable of maintaining their state after going through a power cycle, while our devices can't. Our muxes can maintain their state, by not changing the control logic, but the state will change after a power cycle.

    So my question is if that capability is crucial to your application? Do you need our multiplexers to maintain their state after going through a power cycle?

    Thanks,

    Nir 

  • 0 in reply to Nir Gilgur
    Prodigy 10 points

    Hi Nir ,

    Thanks for the clarifications. As per the latest update , we are using 225 Nos of Latching type KEMET ELECTRONICS relays (UB2-12SNU-L7) and 9 Nos of Latching type Panasonic relays (AGN200S4H) in one PCBA . The standard cost of these two relays are $0.37 and $0.65 per quantity respectively. Ultimately we want to find the low cost solution for these relays that is less than $0.37 and $0.65.

    We are yet to get the information from the design team for the cruciality of the latching type relay used information. If at all we need last state should be maintained during power cycle using your Muxes , what modification or add-on can be done? Or last state maintaining during power cycle using your muxes will not be possible?

    Awaiting your latest reply as soon as possible.

    Regards,

    Dinesh

  • 0 in reply to Dineshkumar Dhanapal
    TI__Mastermind 18135 points

    Hello Dinesh,

    Today is a TI holiday, please expect and answer by EOD tomorrow. 

    Thanks,

    Nir 

  • 0 in reply to Dineshkumar Dhanapal
    TI__Mastermind 18135 points

    Hello Dinsesh,

    Thank you for clarifying, since getting a lower price replacement is crucial for your request and I the voltage operation level is also important. I can recommend the TMUX405x that I mentioned earlier in the thread. It fits your price concern and has similar operational voltage levels as the relays.

    The TMUX405x series has higher resistance than the relays. If this is a concern then I can also recommend the TMUX2889: https://www.ti.com/lit/ds/symlink/tmux2889.pdf. I can loop in the marketing team via email and they can contact you regarding pricing if necessary. 

    Lastly, unfortunately there aren't any modifications you can do to make the multiplexers maintain their last state after a power cycle. This is related to their internal structure and how it is designed.

    Thanks,

    Nir