20pcs TIP41C TIP41 NPN Silicon Power Transistor 6 A, 100 V, 3-Pin

Good price, good product.

So far they have all worked fine.

item exactly as described good

These are useful power transistors. All promised items were present. Each was labelled "C13 TIP41C". All were functional, amplifying the base pin signal and increasing collector current; One exhibited instability during Vbe measurement (see below for details). Testing details: I tested (a) conductance and (b) signal amplification properties. 18 of 20 transistors showed a Vbe at the expected value (685 +/- 7 mV w/ a tight range 677 to 702). One was an outlier (Vbe=814 mV) and 1 was not measurable due to instability (failure). None showed inappropriate conductance from emitter-to-base, emitter-to-collector, collector-to-emitter or collector-to-base when transistor was "off". All showed signal amplification at a variety of currents (Ic) up to 300mA. hFE (beta) was consistent w/ the datasheet.