Components

Iconic general-purpose NPN bipolar junction transistor (BJT) housed in TO-18 metal can or TO-92 plastic package rated for 40V VCEO, 800mA IC, and 300MHz transition frequency.

ON Semiconductor / Microchip general-purpose PNP silicon BJT in TO-92 (PN2907) or TO-18 metal can package, complementary to 2N2222, rated for 60V VCEO and 600mA collector current.

ON Semiconductor / STMicroelectronics legendary 60V, 15A NPN silicon power BJT in hermetic TO-3 metal can package, renowned in linear bench power supplies and class-AB audio amplifiers.

ON Semiconductor / Fairchild industry-standard general-purpose NPN BJT in TO-92 package rated for 40V VCEO, 200mA IC, and 300MHz transition frequency.

ON Semiconductor / Fairchild industry-standard general-purpose PNP BJT in TO-92 package rated for -40V VCEO, -200mA IC, and complementary pairing with 2N3904 NPN.

onsemi / Fairchild 40V 600mA general-purpose NPN bipolar junction transistor in a TO-92 package, providing three times the collector current of the 2N3904 for driving relays, buzzers, and DC motors.

onsemi / Fairchild -40V -600mA general-purpose PNP bipolar junction transistor in a TO-92 package, providing three times the collector current of the 2N3906 for high-side relay, lamp, and motor switching.

onsemi / Fairchild -150V -600mA high-voltage small-signal PNP BJT in a TO-92 package, serving as the standard complementary counterpart to the 2N5551 for audio amplifier VAS stages and high-voltage level shifters.

onsemi / Fairchild 160V 600mA high-voltage NPN bipolar junction transistor in a TO-92 package, widely used in audio power amplifier input/VAS stages, high-voltage level shifting, and telecom lines.

ON Semiconductor / Microchip ubiquitous small-signal N-channel FET in TO-92 package rated for 60V VDS, 200mA drain current, and 5Ω RDS(on) for low-power switching and logic level shifters.

ON Semiconductor / Microchip ubiquitous surface-mount (SOT-23) N-channel FET rated for 60V VDS, 115mA continuous drain current, and low 1.0V to 2.5V gate threshold voltage for SMD logic level shifting and low-power switching.

Toshiba iconic general-purpose PNP silicon BJT in TO-92 package rated for -50V VCEO and -150mA collector current, complementary to 2SC1815 for audio preamps and push-pull stages.

Toshiba iconic general-purpose NPN silicon BJT transistor in TO-92 package rated for 50V VCEO and 150mA collector current, famous in audio preamps, oscillators, and signal switching.

NEC / Toshiba / onsemi -50V -150mA general-purpose PNP BJT in a TO-92 package, the ubiquitous Asian hobbyist companion to the C945 for audio preamplifiers and power switching.

Alpha & Omega Semiconductor ultra-low RDS(on) (28mΩ) N-channel logic-level MOSFET in SOT-23 package, supporting 30V VDS and up to 5.7A drain current for compact power switching.

Alpha & Omega Semiconductor -30V -4.0A low-RDS(on) (44mΩ) P-channel logic-level enhancement mode MOSFET in a SOT-23 package, ideal for high-side load switching and battery reverse-polarity protection.

NEC / Toshiba / UTC -30V -3A medium-power PNP BJT in a TO-126 package with exceptionally low 0.3V VCE(sat) saturation voltage, widely used in Asian audio kits, power inverters, and toy motor drivers.

ON Semiconductor / Nexperia general-purpose PNP silicon BJT in TO-92 package rated for -45V VCEO and -800mA collector current, complementary to BC337 for high-side switching and audio output stages.

ON Semiconductor / Nexperia general-purpose NPN silicon BJT in TO-92 package featuring high 800mA collector current rating for driving relay coils, small motors, and LEDs.

STMicroelectronics / ON Semiconductor European standard general-purpose NPN BJT in TO-92 package rated for 45V VCEO, 100mA IC, and high hFE current gain (up to 800 for BC547C).

STMicroelectronics / ON Semiconductor European standard general-purpose PNP BJT in TO-92 package rated for -45V VCEO, -100mA IC, and complementary pairing with BC547 NPN.

STMicroelectronics / onsemi 45V 1.5A medium-power complementary NPN BJT in a TO-126 package, used for audio amplifier pre-driver stages, relay control, and linear voltage regulation.

STMicroelectronics / onsemi -45V -1.5A medium-power complementary PNP BJT in a TO-126 package, paired with the BD135 for audio amplifier pre-driver stages, relay control, and linear power supplies.

STMicroelectronics / onsemi 80V 1.5A medium-power complementary NPN BJT in a TO-126 package, legendary in DIY audio amplifier driver stages, headphone amplifiers, and Vbe multiplier bias networks.