2 layers72 × 33 mm
Positive Battery Charger Circuit
AbhishekGM23/PCB-Design
This repository contains various PCB design projects.
36 parts
TO-92-3
Overview
The BF494 is a bipolar made by onsemi in a TO-92-3 package with 5 pins. 1 NPN 200mV 20V 30mA 350mW 5V 67 NPN TO-92-3 Bipolar (BJT) ROHS.
JLCPCB lists it (part C3201975). 3 open-source boards in 3 repositories on GitHub use it.
Symbol
The library has no symbol for this part yet.
Footprint
The library has no footprint for this part yet.
Order codes
1- BF494LCSC C3201975
Open-source boards using it
All 3- 2 layers84.1 × 63.6 mm
Radio 1
Junquilh0/FM-radio
While making this I saw a lot of different designs for similar radios. Mine is made of essentially two parts: ### The receiver - The coil (L) and the small variable capacitor (Cosc) choose which frequency the radio…
28 parts - 2 layers140 × 50 mm
RF Transmitter
Lasthope027/Radio-station
This repository contains the design and simulation files for a 100 MHz FM transmitter, including the transmitter circuit, PCB design, manufacturing files, and a dedicated 100 MHz antenna design.
61 partsMIT
Questions
What package is the BF494?
TO-92-3, with 5 pins.
Where is the BF494 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the BF494?
JLCPCB lists it as part C3201975, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BF494?
Parts like it in the library: the PN2222ABU by onsemi, the S9013 by Jiangsu Changjing Electronics Technology (CJ), the 2N3906BU by onsemi and the BC337 by Foshan Blue Rocket Elec. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BF494?
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
PN2222ABU
TO-92-3L-55℃~+150℃ 1 NPN 10uA 1A 300MHz 300mV 35 40V 625mW 6V NPN TO-92-3L Bipolar (BJT) ROHSonsemiBipolar (BJT)
S9013
TO-92-3-55℃~+150℃ 1 NPN 100nA 150MHz 25V 300mW 400 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)2N3906BU
TO-92-3-55℃~+150℃ 1 PNP 100 200mA 250MHz 250mV 40V 50nA 5V 625mW PNP TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)BC337
TO-92-31 NPN 100 100MHz 100nA 45V 5V 625mW 700mV 800mA NPN TO-92-3 Bipolar (BJT) ROHSFoshan Blue Rocket ElecBipolar (BJT)BC549CTA
TO-92-3L1 NPN 100mA 15nA 250mV 300MHz 30V 420 500mW 5V NPN TO-92-3L Bipolar (BJT) ROHSonsemiBipolar (BJT)
2SC2655-TA(RANGE:120-240)
TO-92-3-55℃~+150℃ 1 NPN 100MHz 120 1uA 2A 500mV 50V 5V 900mW NPN TO-92-3 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)KTC1027-Y-AT/P
TO-92-31 NPN 100nA 120MHz 120V 1V 1W 5V 80 800mA NPN TO-92-3 Bipolar (BJT) ROHSKEC SemiconBipolar (BJT)BC556BTF
TO-92-3-65℃~+150℃ 1 PNP 100mA 110 150MHz 15nA 300mV 500mW 5V 65V PNP TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)