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Electronic components, explained with fast reference cards.

Search components such as BC547, LM317, LM358, NE555 and 1N4007. Claddify turns every part into quick facts, pinout notes, common mistakes, equivalents and shareable learning cards.

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BC547

BC547 is a small-signal NPN transistor commonly used for switching, amplification and beginner electronics projects.

TransistorNPN transistorTO-92
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BC548

BC548 is a common NPN transistor from the BC547 family, often used in low-noise small-signal applications.

TransistorNPN transistorTO-92
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BC337

BC337 is an NPN transistor often used for small switching circuits that need more current than BC547-class parts.

TransistorNPN transistorTO-92
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2N3904

2N3904 is a general-purpose NPN transistor widely used for small-signal amplification and switching.

TransistorNPN transistorTO-92
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2N2222

2N2222 is a popular NPN switching transistor used in hobby, repair and prototyping circuits.

TransistorNPN transistorTO-92 / metal-can variants
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PN2222

PN2222 is a common plastic-package version of 2N2222 used for low-power switching circuits.

TransistorNPN transistorTO-92
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BC557

BC557 is a small-signal PNP transistor often used as the PNP counterpart to BC547.

TransistorPNP transistorTO-92
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BC556

BC556 is a small-signal PNP transistor from the BC557 family.

TransistorPNP transistorTO-92
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BC558

BC558 is a low-power PNP transistor from the BC557 family.

TransistorPNP transistorTO-92
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2N3906

2N3906 is a general-purpose PNP transistor often used as the complement of 2N3904.

TransistorPNP transistorTO-92
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BC327

BC327 is a PNP transistor used for switching applications that need more current than BC557-class parts.

TransistorPNP transistorTO-92
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LM317

LM317 is an adjustable linear voltage regulator commonly used to build simple variable power supplies.

RegulatorAdjustable regulatorTO-220 / SOT-223 variants
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LM350

LM350 is an adjustable linear regulator similar to LM317, intended for higher current applications.

RegulatorAdjustable regulatorTO-220
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LM338

LM338 is an adjustable regulator used for higher-current power supply projects in the LM317 family.

RegulatorAdjustable regulatorTO-220 / TO-3 variants
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AMS1117 Adjustable

AMS1117 Adjustable is an SOT-223 low-dropout regulator used for compact adjustable regulation circuits.

RegulatorAdjustable LDO regulatorSOT-223
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AMS1117-5.0

AMS1117-5.0 is a fixed-output LDO regulator used for 5V regulation on compact electronics boards.

RegulatorFixed 5V LDO regulatorSOT-223
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LM358

LM358 is a dual operational amplifier widely used for sensor interfaces, filters and analog signal conditioning.

ICDual op-ampDIP-8 / SOIC-8
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LM2904

LM2904 is a dual op-amp related to the LM358 family and often appears in industrial or automotive variants.

ICDual op-ampDIP-8 / SOIC-8
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LM258

LM258 is a dual operational amplifier related to the LM358 family.

ICDual op-ampDIP-8 / SOIC-8
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TLV2372

TLV2372 is a dual op-amp that may be considered as a modern low-voltage alternative in some LM358-style circuits.

ICDual op-ampReview SOIC-8 technical details, limits, and application notes in the manufacturer datasheet.
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NE555

NE555 Timer IC

ICTimer ICDIP-8 / SOIC-8
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LM555

LM555 Timer IC

ICTimer ICDIP-8 / SOIC-8
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TLC555

TLC555 CMOS Timer

ICCMOS timerDIP-8 / SOIC-8
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LMC555

LMC555 is a low-power CMOS member of the 555 timer family.

ICCMOS timerDIP-8 / SOIC-8
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1N4007

1N4007 is a general-purpose rectifier diode commonly used in power supply and reverse-polarity protection circuits.

DiodeRectifier diodeDO-41
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1N4001

1N4001 is a lower-voltage general-purpose member of the 1N400x rectifier diode family.

DiodeRectifier diodeDO-41
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1N4004

1N4004 is a mid-voltage general-purpose rectifier diode in the 1N400x series.

DiodeRectifier diodeDO-41
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UF4007

UF4007 is a rectifier diode similar to 1N4007 but with faster recovery characteristics.

DiodeFast rectifier diodeDO-41
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7805

7805 is a fixed 5V linear regulator used to power logic circuits and small electronic projects.

RegulatorFixed 5V regulatorReview TO-220 technical details, limits, and application notes in the manufacturer datasheet.
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L7805

L7805 is a member of the 7805 family providing fixed 5V linear regulation.

RegulatorFixed 5V regulatorTO-220
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LM7805

LM7805 is a classic 7805-family regulator for fixed 5V linear regulation.

RegulatorFixed 5V regulatorTO-220
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IRFZ44N

IRFZ44N is an N-channel power MOSFET often used for switching motors, LEDs and DC loads.

MOSFETN-channel MOSFETTO-220
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IRLZ44N

IRLZ44N is a logic-level N-channel MOSFET that is easier to drive from microcontroller-level signals than IRFZ44N.

MOSFETLogic-level N-channel MOSFETTO-220
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IRF3205

IRF3205 is an N-channel power MOSFET used for switching high-current DC loads.

MOSFETN-channel power MOSFETTO-220
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STP55NF06

STP55NF06 is an N-channel power MOSFET used as an alternative for DC load switching.

MOSFETN-channel MOSFETTO-220
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TIP122

TIP122 is an NPN Darlington transistor used for switching higher-current loads with high gain.

TransistorNPN Darlington transistorTO-220
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TIP120

TIP120 is an NPN Darlington switching transistor from the TIP122 family.

TransistorNPN Darlington transistorTO-220
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BDX53

BDX53 is an NPN Darlington power transistor that can be used in TIP122-like applications.

TransistorNPN Darlington transistorTO-220
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MJE802

MJE802 is an NPN Darlington power transistor used in load-driving circuits.

TransistorNPN Darlington transistorReview TO-126 technical details, limits, and application notes in the manufacturer datasheet.
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