Hi Mike,
the 2N508 seems to be ideally suited for use in amateur
LF rigs as it said to be specifically designed for
"entertainment equipment" ;-)
Data from 1975 vintage Motorola books:
2N1309
"PNP germanium general purpose amplifier."
Case:
TO-5, pinout=?
Maximum ratings:
PD: 150mW
VCEO: 30V
IC: 300mA
Characteristics:
hFE (IC=10mA): 80 min.
fab ("frequency cutoff"): 12MHz (fT~9.6MHz)
Cob: 20pF max.
VCEsat (IC=10mA): 200mV max.
2N508
"PNP germanium transistor for audio driver and low
power output service in entertainment equipment."
Case:
TO-5, base-emitter-collector counting clockwise from
the "tab" (bottom view). Base connected to case.
Maximum ratings:
VCB: 18V
VCEO: 18V
VEB: 5V
IC: 500mA
Tj, Tstg: -65..+100C
PD: 225mW
Characteristics:
ICBO (VCB=-16V, IE=0): 16uA max.
IEBO (VEB=-3V, IC=0): 16uA max.
BVCER (IC=0.6mA, RBE=5k) 18V min.
hFE (VCE=-1V, IC=20mA): 99..198
VBE (VCE=-1V, IC=20mA): 180..320mV
Cob (VCB=-5V, IE=1mA, f=1MHz): 35pF max.
fab ("frequency cutoff", VCB=-5V, IE=1mA): 2.5MHz
73
Johan SM6LKM
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 268.1.0/269 - Release Date: 2006-02-24
|
