AC187 - Transistor NPN 25V 1A 1W TO18

The AC187 is an NPN germanium transistor developed in the 1960s primarily for low frequency amplifier applications.
Here are the key specifications:

Material: germanium
Polarity: NPN
Maximum collector-emitter voltage (V_CE_max): 15 V
Maximum collector-base voltage (V_CB_max): 25 V
Maximum emitter-base voltage (V_EB_max): 10 V
Maximum collector current (I_C_max): 1 A
Maximum power dissipation (P_tot): 1 W
DC gain (h_FE): 100
Transit frequency (f_T): 1 MHz
Collector capacitance (C_c): 180 pF
Package: TO-18