Once more Sansui transistor substitutions

super98lsc said:
KSC1845EBU = Obsolete

Superceded by = KSC1845FTA (PIN ORDER!!)
Must install them backwards of original 2SC1313 which is BCE the KSC1845FTA is ECB.
Click to expand...

The 2SC1313 is rated at 30W and the KSC1845 is only rated at 500MW. KSC2334Y and KSD1273 are better matches and are all TO220.
 
ghazzer said:
The 2SC1313 is rated at 30W and the KSC1845 is only rated at 500MW. KSC2334Y and KSD1273 are better matches and are all TO220.
Click to expand...

Type Designator: 2SC1313

Material of transistor: Si
Polarity: NPN
Maximum collector power dissipation (Pc), W: 0.2
Maximum collector-base voltage |Ucb|, V: 50
Maximum collector-emitter voltage |Uce|, V: 50
Maximum emitter-base voltage |Ueb|, V: 5
Maximum collector current |Ic max|, A: 0.1
Maksimalna temperatura (Tj), °C: 150
Transition frequency (ft), MHz: 200
Collector capacitance (Cc), pF:
Forward current transfer ratio (hFE), min: 150
Noise Figure, dB: -
Package of 2SC1313 transistor: TO92


Type Designator: KSC1845

Material of transistor: Si
Polarity: NPN
Maximum collector power dissipation (Pc), W: 0.5
Maximum collector-base voltage |Ucb|, V: 120
Maximum collector-emitter voltage |Uce|, V: 120
Maximum emitter-base voltage |Ueb|, V: 5
Maximum collector current |Ic max|, A: 0.05
Maksimalna temperatura (Tj), °C: 150
Transition frequency (ft), MHz: 50
Collector capacitance (Cc), pF: 1.6
Forward current transfer ratio (hFE), min: 200
Noise Figure, dB: -
Package of KSC1845 transistor: TO92

Seems quite ok to me.
 
Turns out there are a bunch of old transistors that map out to these new parts.

I will just list the ones on your list plus one new addition. The cross reference listing is on the last page of the Sanken catalogs. :thmbsp:

--------------------------------------
2SA745, 2SA747,

AU D5: 2SA1105,

AU D7: 2SA1106

These all go to --->> 2SA1695

--------------------------------------
2SC1116, 2SC1403,

AU D5: 2SC2580,

AU D7: 2SC2581

These all go to --->> 2SC4468

--------------------------------------
 
Please clarify. Whats with the AU D5/D7 vs. the ones without that marking?

Are you saying per the naming system I was using in my list:

2SA1695 --- 2SA745, 2SA747, 2SA1105 (if AU-D5), 2SA1106 (if AU-D7)

Meaning if you have a AU-D5 use 2SA1105 and if AU-D6 use 2SA1106 in same position/duty?

This was wrong so don't follow this. All relevant info in post #1
 
Last edited:
ToniCH said:
Please clarify. Whats with the AU D5/D7 vs. the ones without that marking?

Are you saying per the naming system I was using in my list:

2SA1695 --- 2SA745, 2SA747, 2SA1105 (if AU-D5), 2SA1106 (if AU-D7)

Meaning if you have a AU-D5 use 2SA1105 and if AU-D6 use 2SA1106 in same position/duty?
Click to expand...

It goes the other way around.

The Sansui AU D5 uses the, obsolete OEM, 2SA1105 & 2SC2580 output transistor pair.

The Sansui AU D7 uses the, obsolete OEM, 2SA1106 & 2SC2581 output transistor pair.

The 2SA1695 & 2SC4468 replace both of those obsolete transistor pairs.
 
Last edited:
So, its like this?

2SA1105 --- 2SA1695
2SA1106 --- 2SA1695

2SC2580 --- 2SC4468
2SC2581 --- 2SC4468
 
skippy124 said:
Hi Steve

The 2SC1313 is a TO92 small signal transistor (KSC1845, 2SC2240 are suitable subs)
Click to expand...

My Bad!

The TR in my Sansui (TR603 in P/S) is a 2SD313(E,F), but I mistakenly wrote it in my TR sub listing as 1313. I just checked the data sheet, and I did manage to copy the correct parameters for the 313, hence my confusion. I just checked my other files and references and all the others are "313". Good thing I have not yet ordered those P/S TRs.

I have to be more careful as I get older.

Sorry - - -
 
I can see where the 2SA1695/2SC4468 is a parameter match for the original 2SA1106/2SC2581, but many people have recommended the NJWs. Wouldn't it be wiser to go with the more robust NJWs, or am I missing something?

∙∙∙TR∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙M∙∙∙Typ∙∙∙∙∙∙P∙∙∙∙∙∙∙Vcb ∙∙∙Vce∙∙∙Veb∙∙∙∙Ic∙∙∙∙∙ Tj∙∙∙∙∙∙∙∙∙ Ft ∙∙∙∙∙∙∙ C∙∙∙∙∙∙ hFE∙∙∙∙∙ Pkg
2SA1106(O,Y)∙∙Si∙∙PNP∙∙∙100W∙∙140V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 400∙∙∙∙ 80T∙∙∙∙∙ TO218
NJW0302∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙150W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 400∙∙ 75/150∙∙ TO3P3
NJW1302∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙200W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 600∙∙ 75/150∙∙ TO3P3
2SA1695∙∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙100W∙∙140V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 400∙∙ 50/180∙∙ TO3P

2SC2581(O,Y)∙∙Si∙∙NPN∙∙∙100W∙∙200V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 10MHz∙∙ 250∙∙∙∙ 80T∙∙∙∙ TO218
NJW0281 ∙∙∙∙∙∙∙∙Si∙∙NPN∙∙∙150W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 400∙∙ 75/150∙∙ TO3P3
NJW3281 ∙∙∙∙∙∙∙∙Si∙∙NPN∙∙∙200W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 600∙∙ 75/150∙∙ TO3P3
2SC4468∙∙∙∙∙∙∙∙ Si∙∙NPN∙∙∙100W∙∙200V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 250∙∙ 50/180∙∙ TO3P
 
ghazzer, to me they look really good. Ideal for really heavy duty build?

I didn't find the TO218 specs. The NJW's seem to be BCE pin order. What are SA1106/SC2581 in TO218 case? Is there size difference TO218 vs. TO3P3?

Anybody to confirm that they are ok for substitutes? Possible problems or no problems in sight?
 
This link will get you to a Google search for pictures of transistor packages that will choke a mule!

https://www.google.com/search?q=tra...-yxn9M%2C_&usg=__5h78rCqgp8TBxqvwRuoMgnsWTQc=

Whatever you are looking for will probably be there. Just click on any of the pictures to explore further.

I think that the TO218 package has been phased out, and TO3P is at least one of the replacements. The NJEs are pin for pin, and physical dimension replacements for the original Sankens.
 
ghazzer said:
I can see where the 2SA1695/2SC4468 is a parameter match for the original 2SA1106/2SC2581, but many people have recommended the NJWs. Wouldn't it be wiser to go with the more robust NJWs, or am I missing something?

∙∙∙TR∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙M∙∙∙Typ∙∙∙∙∙∙P∙∙∙∙∙∙∙Vcb ∙∙∙Vce∙∙∙Veb∙∙∙∙Ic∙∙∙∙∙ Tj∙∙∙∙∙∙∙∙∙ Ft ∙∙∙∙∙∙∙ C∙∙∙∙∙∙ hFE∙∙∙∙∙ Pkg
2SA1106(O,Y)∙∙Si∙∙PNP∙∙∙100W∙∙140V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 400∙∙∙∙ 80T∙∙∙∙∙ TO218
NJW0302∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙150W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 400∙∙ 75/150∙∙ TO3P3
NJW1302∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙200W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 600∙∙ 75/150∙∙ TO3P3
2SA1695∙∙∙∙∙∙∙∙∙ Si∙∙PNP∙∙∙100W∙∙140V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 400∙∙ 50/180∙∙ TO3P

2SC2581(O,Y)∙∙Si∙∙NPN∙∙∙100W∙∙200V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 10MHz∙∙ 250∙∙∙∙ 80T∙∙∙∙ TO218
NJW0281 ∙∙∙∙∙∙∙∙Si∙∙NPN∙∙∙150W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 400∙∙ 75/150∙∙ TO3P3
NJW3281 ∙∙∙∙∙∙∙∙Si∙∙NPN∙∙∙200W∙∙250V∙∙250V∙∙∙5V∙∙ 15A∙∙ 150°C∙∙ 30MHz∙∙ 600∙∙ 75/150∙∙ TO3P3
2SC4468∙∙∙∙∙∙∙∙ Si∙∙NPN∙∙∙100W∙∙200V∙∙140V∙∙∙6V∙∙ 10A∙∙ 150°C∙∙ 20MHz∙∙ 250∙∙ 50/180∙∙ TO3P
Click to expand...

People are free to do what they want to do.

Sanken recommends these transistors as replacements for their obsolete products. I trust as the manufacturer they know what they are doing.

http://www.semicon.sanken-ele.co.jp/en/support/discontinued/
 
Looking for a Sub for the 2SB527 . Can't find the KSA1220 or MJE15033 locally (Toronto, G4700 L Channel out and I didn't test back far enough). The 2SB966 comes up as a sub for the KSA1220 and is available.
Would 2SB966 be a suitable sub for the 527 or anyone know of somewhere in the GTA that has the KSA1220 or MJE15033?
thanks
 
Last edited:
How about the 3 leg odd ball diode in the 505 I am getting ready to work on. It is a common cathode diode (I guess 2 diodes in one package.)

It is a 10DC-1:scratch2:
 
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