- #N2222 transistor datasheet pdf pdf#
- #N2222 transistor datasheet pdf full#
- #N2222 transistor datasheet pdf series#
When working as an amplifier it can be used in audio amplification circuits, audio preamplification circuits and any type of small signal amplification in electronic application. They are designed for high-speed switching applications at collector currents up to 500 mA, and feature useful current gain over a wide range of. So, if all right, I can drive with max 20mA from Atmega (well below the 40mA max).Īnd so. 2N2222 is a general purpose transistor with lot of capabilities in a small package. The 2N2218, 2N2219, 2N2221 and 2N2222 are silicon planar epitaxial NPN transistors in Jedec TO-39 (for 2N2218 and 2N2219) and in Jedec TO-18 (for 2N2221 and 2N2222) metal cases. All right? (From page 2 of datasheet, (IC = 150 mAdc, IB = 15 mAdc) under Collector−Emitter Saturation Voltage. If I did understand, when I want saturate base the current need to be ~ 1/10 of the collector. I want connect the Ground of booster to the COLLECTOR of transistor and EMITTER to the rail ground, with a PIN moving the base.ġ - First question: is it right to put "ground" from booster to collector and base TO the ground rail of breadboard? So, I thought to cut the ground of the booster with a NPN transistor (PN2222A, datasheet: ) and active from asleep the transistor, read, put outpit pin to low, send data and sleep.īecause the DHT22 only consume 1.5mA when reading (datasheet: ) the PN2222A can supports the 5V from an Atmega PIN and the current beetween C-E. TO OBTAIN THE LATEST, MOST UP-TO-DATE DATASHEET AND PRODUCT INFORMATION, VISIT OUR WEBSITE.
#N2222 transistor datasheet pdf full#
When full charged, battery last only for 1900/2.2 = 863h = ~ 35days. So, I'm using the worst scenario: 2.2mA wasted. Amplifier Transistors(NPN Silicon), N2222 Datasheet, N2222 circuit, N2222 data sheet : ONSEMI, alldatasheet, Datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs and other semiconductors.
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#N2222 transistor datasheet pdf pdf#
So, battery direct to Atmega and Radio NRF24L01, both to 2.74 (and less) and fixed voltage at 3.3V for the DHT22.Īll works in a breadboard, but I don't understand what's the quiescent current of MT3608 (here the datasheet: ), cause data report different PFM and PWM. View and download 2N2222 datasheet pdf (7 Pages), 2N2222 BJTs, Bipolar (BJT) Single Transistor, NPN, 30V, 250MHz, 0.5W(1/2W), 800mA, 100 hFE. The DHT22 min voltage is 3.3V, so I did buy this: and regulated exit to 3.3v. I did read a DHT22 and send every 10 min data to a gateway (MySensors installation), all other time the Atmega sleeps.
#N2222 transistor datasheet pdf series#
I feed it with 2XAA in series (~ 2.74volt when full charged and 1900mah).
I did bootload an Atmega with BOD disabled.
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