N Cook wrote:
Eeyore wrote in message
...

N Cook wrote:

It was actually MJF122, the centre spine of the retaining clip had
messed
up the surface of the package and obscured the 1 , so plenty of info on
that
one
Complement is MJF127.

That's a fully isolated TO-220 package though ! Quite different to
TIP3055.
Graham



That was the small Motorola one, that I misread

The Marshall badged ones are probably like these 2, original specs, for the
archives, both are the right TIP35/TIP3055 type packages

T64 = BDV64C
T65 = BDV65C
eg
Part Number = BDV65C
Manufacturer Name = Various
Description = Darlington, PowerDarlington, Power
BDV65C
Si
npn
125W
140V
120V
5V
12A
150C
-
-
2000T
PHI
TO218-2

OR


T65 NPN silicon darlington power transistor. Complementary epitaxial base
transistors in monolithic darlington circuit for audio output stages and
general amplifier and switching applications. Magnatec Inc

ABSOLUTE MAXIMUM RATINGS (T = 25°C unless otherwise stated)
case
T64 T65
-120V 120V
V Collector - Base Voltage (Open Emitter)
CBO
-120V 120V
Collector - Emitter Voltage (Open Base)
V
CEO
-5V 5V
Emitter - Base Voltage (Open Collector)
V
EBO
12A
Collector Current (d.c)
I
C
20A
Peak Collector Current
I
CM
0.5A
Base Current (d.c)
I
B
125W
Total Power Dissipation up to T = 25°C
P
tot
mb
-65 to 150°C
Storage Temperature Range
T
stg
150°C
Maximum Junction Temperature

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



Marshall are quite happy to supply semiconductor spares and have a very
helpful service dept - once you get through to them!

Ron(UK)

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Public Address Systems
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