2SD555 + 2SB600 data help!! - Page 4 - diyAudio
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Old 18th December 2011, 08:57 PM   #31
blmn is offline blmn  Brazil
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Based on Jaccos datasheet, see these guys:

http://www.onsemi.com/pub_link/Collateral/MJ21193-D.PDF

Regards,
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Old 18th December 2011, 09:10 PM   #32
Ayid is offline Ayid  Canada
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Yes, I saw that datasheet.
But did you notice the ft rating? Only 4MHZ. Hence its not quite an equivalent device, when compared to the original 2SD555 with an ft of 15MHZ - perhaps close. This is a difficulty I have with trying to restore a receiver to its original "glory". A "purist" might say its not close enough. But it does function.
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Old 18th December 2011, 10:20 PM   #33
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Ok,

As I said, based on Jaccos datasheet, that shows fT around 4/7 MHz for 555/600, they fit quite well. Actually Im using them with no problems at all.

But see also 2st2121 here: http://www.st.com/internet/com/TECHN...CD00171926.pdf

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Old 18th December 2011, 10:42 PM   #34
Ayid is offline Ayid  Canada
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I was unable to read jacco's link on post #25, so I didn't know what it said.
I did use jacco's post #24 and there I read of the ft being 15MHZ.

Your last link to 2ST2121 shows a good ft of 25MHZ. Wonder how much they cost?
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Old 19th December 2011, 01:37 PM   #35
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Jaccos link shows fT around 4/7 MHz for 555/600, but the ST devices arent expensive too.

See Mouser or Digikey. Few dollars per pair.

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Old 19th December 2011, 02:18 PM   #36
anatech is offline anatech  Canada
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Interesting device. Notice how the gain drops over 10 amperes though, better used in pairs at least.

The big question for these parts is how tight the characteristics are between devices. That determines how many you might have to buy in order to have decent matches between transistors working together.

At Digikey right now, there is 0.25 between MJ21195 and 2ST2121. You might want to check out the second breakdown between the two parts. I'm not sure how they compare to be honest, just something to check.

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Old 20th December 2011, 12:02 PM   #37
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If anyone is looking for these original NEC parts, I have about 50 of each. All have had curves run on them and they are from the same run.
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Old 20th December 2011, 01:48 PM   #38
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Just go to Google and type "2SD555 datasheet".

Voila - it's as easy as that and FREE.

There are several companies - AllDataSheet.com for one - that provide this information Free of Charge.

2SD555 pdf, 2SD555 description, 2SD555 datasheets, 2SD555 view ::: ALLDATASHEET :::
http://pdf1.alldatasheet.com/datashe...IC/2SB600.html

Come on guys. It isn't difficult.

And my first try at http://www.cricklewoodelectronics.co...=search&page=1

Gives both devices currently easilly available for 6.00GBP each. Cricklewood will happily export too.

Last edited by KatieandDad; 20th December 2011 at 01:59 PM.
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Old 20th December 2011, 02:23 PM   #39
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Quote:
Originally Posted by KatieandDad View Post
Just go to Google and type "2SD555 datasheet".

Voila - it's as easy as that and FREE.

There are several companies - AllDataSheet.com for one - that provide this information Free of Charge.

2SD555 pdf, 2SD555 description, 2SD555 datasheets, 2SD555 view ::: ALLDATASHEET :::
2SB600 pdf, 2SB600 description, 2SB600 datasheets, 2SB600 view ::: ALLDATASHEET :::

Come on guys. It isn't difficult.

And my first try at Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras

Gives both devices currently easilly available for 6.00GBP each. Cricklewood will happily export too.

Moderators - Can I suggest making this link STICKY as you get a lot of enquiries about datasheets. EVERY device that I have been asked about can be easilly found using this link.
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Old 23rd December 2011, 10:58 AM   #40
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Quote:
Originally Posted by RetroAudio View Post
Does anyone have data sheets on the 2SD555 and 2SB600 transistors, or did they even make them? I've searched high (and low) for info and came up with a blurb about the 555, but Icmax and Ft are not consistent. I think the posts get their info from other posts and errors perpetuate. Anyone got the real scoop?? Thanks!
2SD555 电 特 性 - 参 数


名称: 2SD555
材料: Si
结构: npn
最大耗散功率 (Pc): 200W
集电极 -- 基极击穿电压 (Ucb): 400V
集电极 -- 发射极击穿电压 (Uce): 200V
发射极 -- 基极击穿电压 (Ueb): 5V
最大集电极电流 (Ic max): 10A
最高结温 (Tj): 175C
特征频率 (ft): 3MHz
集电极电容 (Cc), Pf: -
直流电流增益 (hFE), min/max: 40/200
制造商: NEC 案例: TO3
ڲձNEC 2SD555 2SC600 Թ-Ա
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