|
|
|
|
|||||||
| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
 |
|
|
Thread Tools |
16th Mar 2015, 12:33 pm
|
#1 |
|
Nonode
Join Date: Jul 2010
Location: Folkestone, Kent, UK.
Posts: 2,172
|
100 volt transistors
hi all
can someone please suggest cheap and readily available transistors with at least a 100 volt Vceo to replace a BC456/556 pair. They are used as simple switches in a homebrew 48V solar charger/controller, but my panels go up to 72V unloaded Many thanks Last edited by ITAM805; 16th Mar 2015 at 12:57 pm. |
|
|
16th Mar 2015, 12:50 pm
|
#2 |
|
Rest in Peace
Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
Posts: 3,944
|
Re: 100 volt transistors
My ECA equivalence book lists the BC456 as a 30V transistor and the BC556 as an 80V one.
|
|
|
|
16th Mar 2015, 12:58 pm
|
#3 |
|
Nonode
Join Date: Jul 2010
Location: Folkestone, Kent, UK.
Posts: 2,172
|
Re: 100 volt transistors
Sorry Colin, I was editing as you were posting! See above edit. I thought they were both 65V?
|
|
|
|
16th Mar 2015, 1:00 pm
|
#4 |
|
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 14,005
|
Re: 100 volt transistors
Have a look inside the 'bulge' of any dead Compact Fluorescent bulb; there's usually at leatr one decently voltage-rated bipolar transistor in there, and when the bulbs die it's rarely the transistor's fault.
|
|
|
|
16th Mar 2015, 1:39 pm
|
#5 |
|
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
|
Re: 100 volt transistors
PNP 2N5401G RS 625-4859 ~50p for 5
NPN 2N5550G RS 544-9955 ~20p ea Look suitable and cheap enough. CPC will do a ZTX653/753 pair for about a quid.
__________________
....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
|
|
|
16th Mar 2015, 1:44 pm
|
#6 |
|
Nonode
Join Date: Jul 2010
Location: Folkestone, Kent, UK.
Posts: 2,172
|
Re: 100 volt transistors
Thanks Chris
|
|
|
|
16th Mar 2015, 2:13 pm
|
#7 |
|
Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,087
|
Re: 100 volt transistors
ZTX453 / ZTX553, small plastic E-line transistors but with 1A capability, hopefully ideal.
|
|
|
|
17th Mar 2015, 8:26 pm
|
#8 |
|
Hexode
Join Date: Oct 2010
Location: Box End, Beds. UK.
Posts: 271
|
Re: 100 volt transistors
I agree, check out the Zetex ((now Diodes I think) range; they will have somat suitable
|
|
|
|
17th Mar 2015, 10:31 pm
|
#9 |
|
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,195
|
Re: 100 volt transistors
Hi ZTX453 & 553 were specifically designed as drivers, just right for your application and not expensive.
Ed |
|
|
|
18th Mar 2015, 12:43 am
|
#10 |
|
Nonode
Join Date: Jul 2010
Location: Folkestone, Kent, UK.
Posts: 2,172
|
Re: 100 volt transistors
Many thanks chaps.
I went for the ZTX653/753 suggested by Chris and got 5 of each for £3.70 incl. from Little Diode 
|
|
|
