Found some specs which should help to cross it
GE D44C1
        Vce Max = 40
        Veb Max = 5
        Ic Max = 4 Amps
        Power Max = 30 Watts
        Junction Temp Max = 150 Degrees C
        Freq Resp = 50 MHz
        Cuttoff = 10 uA at Vcb=40
        Hfe=37 at .2 Amps
GE D41D1
        Vce Max = 45
        Veb Max = 5
        Ic Max = 1 Amp
        Power Max = 6 Watts
        Jumction Temp Max = 150 Degrees C
        Freq Resp = 150 MHz
        Cuttoff = 100 nA at Vcb=45
        Hfe=88 at .1 Amp
Mark
On Mon, 2002-10-07 at 11:34, Cini, Richard wrote:
  Hello, all:
        I got my hands on an unpopulated S100 motherboard by Vector
 Electronics and I want to put it together for testing purposes. It's an
 active-terminated board and I'm having trouble finding equivalent parts for
 two transistors:
        NPN power: GE D44C1 or NSI D44C4 (TO-220)
        PNP power: GE D41D1 or NSI D45C4 (TO-202)(NSI is National
 Semiconductor)
        Any help would be appreciated.
 Rich