Was kann ich statt einem BD645 nehmen?

Finn schrieb:
> Ich habe gesehen, dass der Darlington-Transistor BD645 nicht mehr
> produziert wird.

Von EINEM der bisherigen Hersteller (TT Electronics).

> Ich habe ein paar Transistoren verglichen und bin der
> Meinung, dass ich auch einen BD646 verwenden könnte. Ist meine Annahme
> richtige?

Nein, PNP!=NPN.

Nimm einfach einen BD645 von Bourns, Savantic, Comset.
Kessler-Electronic führt angeblich NXP.

Oder einen der Vergleichtypen:

001-021360, 0065-379XX-XXDX, 07311961, 09559, 231-0070, 25A-2-2, 
25A-2-2(STERN), 273-14, 2N6386, 2N6387, 2N6388, 2N6530, 2SD1190, 
2SD1191, 2SD1192, 2SD1196, 2SD1572 (May not be an exact mechanical or 
electrical equivalent. However, it will provide an acceptable substitute 
in the majority of typical applications.), 2SD1599 (May not be an exact 
mechanical or electrical equivalent. However, it will provide an 
acceptable substitute in the majority of typical applications.), 2SD1600 
(May not be an exact mechanical or electrical equivalent. However, it 
will provide an acceptable substitute in the majority of typical 
applications.), 2SD1601, 2SD1602, 2SD1603, 2SD1604, 2SD459, 2SD833 (May 
not be an exact mechanical or electrical equivalent. However, it will 
provide an acceptable substitute in the majority of typical 
applications.), 34-2N-6044, 4822-130-41002, 482213041002, 
4822-130-41042, 482213041042, 4822-130-41211, 482213041211, 
497-2562-5-ND, 5322-130-42363, 532213042363, 5322-130-42701, 
532213042701, 561-6806-386, 57B273-14, 6-2164, 86-671-2, 9331-972-70112, 
933197270112, 9331-972-80112, 933197280112, 9332-306-60112, 
933230660112, 9332-699-50112, 933269950112, 9332-699-60112, 
933269960112, 935-6108, BD265, BD267, BD267A, BD267B, BD276B, BD643, 
BD643F (Must use the insulating hardware supplied.), BD645, BD645F (Must 
use the insulating hardware supplied.), BD647, BD647F (Must use the 
insulating hardware supplied.), BD649, BD649F (Must use the insulating 
hardware supplied.), BD651, BD895, BD895A, BD897, BD897A, BD899, BD899A, 
BD901A, BDT62BF (Must use the insulating hardware supplied.), BDT63, 
BDT63A, BDT63AF (Must use the insulating hardware supplied.), BDT63BF 
(Must use the insulating hardware supplied.), BDT63F (Must use the 
insulating hardware supplied.), BDX33, BDX33A, BDX33B, BDX33C, BDX33D, 
BDX53, BDX53A, BDX53B, BDX53BFI (Must use the insulating hardware 
supplied.), D1190, D1190(TRANS), D1191(TRANS), D1192, D1192(TRANS), 
D1196, D1196(TRANS), D1558(TRANS) (May not be an exact mechanical or 
electrical equivalent. However, it will provide an acceptable substitute 
in the majority of typical applications.), D1572(TRANS) (May not be an 
exact mechanical or electrical equivalent. However, it will provide an 
acceptable substitute in the majority of typical applications.), 
D1599(TRANS) (May not be an exact mechanical or electrical equivalent. 
However, it will provide an acceptable substitute in the majority of 
typical applications.), D1600(TRANS) (May not be an exact mechanical or 
electrical equivalent. However, it will provide an acceptable substitute 
in the majority of typical applications.), D1601(TRANS), D1602(TRANS), 
D1603(TRANS), D1604(TRANS), D44D1, D44D2, D44D3, D44D4, D44D5, D44D6, 
D44E1, D44E2, D44E3, D459, D833(TRANS) (May not be an exact mechanical 
or electrical equivalent. However, it will provide an acceptable 
substitute in the majority of typical applications.), DDX53C, DS-70, 
E-00585-0034, ECG263, F585-34, GE-349, HEP-S9150, MJE2100, MJE2101, 
MJE2102, MJE2103, MJE800T, MJE802T, MJE803T, MJF6388 (Must use the 
insulating hardware supplied.), MTE801T, NTE263, SDN501, SE9300, SE9301, 
SE9302, SK3180, SK3180/263, SK3222, T1P100, TM263, VS2SD1190//-1E, 
VS2SD1190//1E, WEP990, X0303, X0303(GOTTLIEB), ZN6386

(aber vorher mal in beide Datenblätter gucken).