Replacement part for Toshiba TLP630 AC Input Phototransistor Output Optocoupler - Page 1
Forum section: electronics / projects

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 07, 2017, 11:19:58 am
content: According to the website from Toshiba the TLP630 is obsolete and not recommended for new design.Is it easy to find a replacement part with the same footprint and the same characteristics?If not possible to find with the same footprint, at least I want to have optocoupler with the same characteristics.How come there are so many variants and flavours of optocouplers?Which one replaces the TLP630 and has the same characteristics?

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 07, 2017, 11:43:45 am
content: Is TLP383 a good replacement for the TLP630?The footprint is not same. But based on ESD characteristics both have 5KV support.Or what about TLP631, TLP331?These are footprint compatible with TLP630. But these parts looks like going to be obsolete.I have seen Toshiba opto-isolator line, looks like transistor with base control is not there presently.TLP383 is new part.How to check this with Toshiba support? I like to check with them.

author: Cervisia
author_rank: Regular Contributor
timestamp: February 07, 2017, 11:47:23 am
content: AC optocouplers with six pins are not very common. Anyway, here'sa DigiKey search. (There are still some TLP630s available.)You probably want H11AA1 or H11AA4, depending on the CTR you need. (It's possible that the TLP630 was designed as a clone of that.)The TLP631 does not have an AC input.What characteristics do you actually need?

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 07, 2017, 12:09:41 pm
content: Based on your input I found a document with cross reference to other optocouplers.See the cross reference document in attachment! There they compare TLP630 with counterpart from other manufacturers.Hopefully these other components are not obsolete as well, but are still produced newly.

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 09, 2017, 06:54:15 pm
content: Any update on this matter?

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 25, 2017, 12:56:53 pm
content: Independent of the opto coupler type the most important parameter is the speed e.g. toff.The base control will allows it to make toff to approx. 1-3 us.Toff is also depending on the operating temperature which can be up to 50 grad degrees inside devices.One bit time at a baud rate of 9600 is 104us.If you look at toff of TLP630 toff is 28 to 30 us at 25 grad degrees and this figure will increase with higher temperatures.Then it will be critical as you get close to ½ bit time.

author: pascal_sweden
author_rank: Super Contributor
timestamp: February 27, 2017, 07:24:27 pm
content: I received the following feedback from Vishay. See below. This is very good news IMO"IL207AT is DC input optocoupler with 8 pins, however TLP630 has an AC input and 6 pins.I would recommend you to have a look at our optocoupler IL255-2:http://www.vishay.com/docs/83619/il255.pdfIt is a better cross for TLP630 and there are no plans to obsolete the part."

author: Cervisia
author_rank: Regular Contributor
timestamp: February 28, 2017, 12:49:21 pm
content: Both the H11AAx and the IL25x would be a replacement for the TLP630.The IL255 has a guaranteed minimum CTR of 50%; if you were using the GB rank of the TLP630, then you must replace it with a device that actually has the same minimum CTR of 100 %, i.e., H11AA4.

author: pascal_sweden
author_rank: Super Contributor
timestamp: March 10, 2017, 03:46:23 pm
content: Feedback from Vishay:"You are correct, both DIP and SMD versions of IL255 are being obsoleted. I apologize for my mistake.Coming back to your question about IL207AT: This part is still active, there is no plan to EOL it."

author: pascal_sweden
author_rank: Super Contributor
timestamp: March 10, 2017, 03:52:33 pm
content: Additional feedback from Vishay:"H11AA1: This part is being revised at the moment. So the datasheet parameters will differ soon due to the revisions. However it is an AC input coupler with base pin.http://www.vishay.com/docs/83608/h11aa1.pdfThis part is also active, no plans of EOL. However as I mentioned before, there will be some changes in the datasheet of H11AA1 since it is being revised currently.Unfortunately I cannot tell a concrete point of time when the revision will be over. It will not be a new different part. The existing part is being revised. I can say here though the specs in the datasheet will not be changed. Only the graphs over temperature might differ slightly after the revision.Additionally IL255 was also available with a higher CTR range. But it is being obsolete so we offer H11AA1 as a replacement now."

author: pascal_sweden
author_rank: Super Contributor
timestamp: March 10, 2017, 03:55:32 pm
content: The attached documents confirm the equivalence of H11AA1 and TLP630.