[R-390] Off Topic - Transistor R390A sounding good.

[AI2Q]

Chuck:

According to NTE, here's the info you might need. If you like I can send you and engineering datasheet as well.

Industry Number  : MPS6530
NTE Device Number: NTE123AP
T-NPN,SI-AF/RF AMP,TO-92

Absolute Maximum Ratings: Collector-Base Voltage, VCB 60V 
      Collector-Emitter Voltage, VCEO 40V 
      Emitter-Base Voltage, VEB 6V 
      Continuous Collector Current, IC 600mA 
      Total Device Dissipation (TA = +25°C), PD 350mW 
                  Derate above 25°C 2.8mW/°C 
      Total Device Dissipation (TC = +25°C), PD 1.0W 
                  Derate above 25°C 8.0mW/°C 
      Operating Junction Temperature Range, TJ -55° to +150°C 
      Storage Temperature Range, Tstg -55° to +150°C 
      Thermal Resistance, Junction-to-Case, RthJC 125°C/W 
      Thermal Resistance, Junction-to-Ambient, RthJA 357°C/W 


Vy 73, AI2Q, Alex in Maine  
http://users.adelphia.net/~alexmm/ai2q.htm

  ----- Original Message ----- 
  From: Charles B 
  To: r-390 at mailman.qth.net 
  Sent: Saturday, January 01, 2005 7:29 AM
  Subject: [R-390] Off Topic - Transistor R390A sounding good.


  Hi all,
  My R-390A is sounding good lately.


  I don't know where to go for this info, so I am checking 
  here?  I need to replace a transistor.  I have gone to the
  electronics store in West Palm Beach and they can't find it?
  I checked with a source here on the web and it's not listed
  in their catalog.  Anyway, if anyone could take a look
  at the following number and let me know if they can
  cross reference it, I'd appreciate it?  You can
  get me off group at my email address of:

  ka4prf at us-it.net

  The transistor's number is     MPS 6530
  I think the case has a large "E" on it?  The
  resistor is an NPN type. O18 case
  Thanks

  Chuck