Question
What parts would you recommend stocking?
Answer
The list below contains parts that would be common to a variety of
circuits designs and experiments.
Transistors (BJTs)
| Description
| Digikey Link
|
| BJT, NPN
| 2N3904G
|
| BJT, PNP
| 2N3906G
|
| BJT, NPN, high gain
| BC548C
|
| BJT, PNP, high gain
| BC557C
|
| N-CH Logic Level FET, 55V, 47A, TO-220
| IRLZ44
|
| N-CH Logic Level FET, 30V, 40A, TO-220
| FDP8878
|
| N-CH Logic Level FET, 60V, 200mA, TO-92
| 2N7000RLRAG
|
Diodes
| Description
| Digikey Link
|
| Signal Diode
| 1N4148
|
Voltage Regulator
LM317 adjustable regulator has an adjustable output voltage that
can range from 1.2V to 37V, and a maximum output current of 1.5A.
Two resistors are required to adjust the output voltage.
| Description
| Digikey Link
|
| Adjustable regulator
| LM317T
|
Logic ICs
74AHC series (or other series with 5V tolerant inputs).
These devices are useful for interfacing 5V and 3.3V systems together.
Op-Amps
| Description
| Digikey Link
|
| Single supply op-amp (3-15V)
| TLC272ACP
|
LEDs
Coming Soon
Resistors
1%, 1/4W resistors. 1% resistors are not much more expensive than 5%
and can be be handy when you need to adjust the gain of an op-amp or
trim the output of an adjustable regulator. Usually it makes sense to
purchase a kit of resistors with five to ten of each value. As you run
out of common values (like 1K, 10K, etc) restock those values by
buying 100 pieces. If a reasonably priced kit is not available I
would purchase the following values --
Trim Pots
Capacitors
For capacitors up to 1µF I would use ceramic capacitors. They
are reasonable priced and non-polarized. I would purchase X7R (or X5R)
type capacitors for values from 1000pF to 1µF and NP0 type
capacitors for values below 1000pF. Some common values --
| Description
| Digikey Link
|
| 33pF, 50V, NP0
| AVX AR215A330K4R
|
| 100pF, 50V, NP0
| AVX AR215A101K4R
|
| 1000pF, 50V, NP0
| AVX AR155A102K4R
|
| 4700pF X7R
| B37981F5472K051
|
| 10000pF X7R
| B37981F5103K051
|
| 47000pF X7R
| B37981F5473K051
|
| 0.1uF X7R
| B37981M5104K051
|
| 0.47uF X7R
| FK26X7R1H474K
|
| 1uF X7R
| FK20X7R1H105K
|
| 10uF, 25V Electrolytic, Low ESR
| UPW1E100MDD
|
| 100uF, 25V Electrolytic, Low ESR
| UPW1E101MED
|
Connectors
Coming Soon
Wire
- UL1050 PVC Insulated Wire
- Thick insulation, 30AWG strands. Good for crimps.
- UL1213 High Temperature Teflon Insulated Hookup Wire
- Teflon insulation won't melt when soldering, 30AWG to 38AWG
- Uninsulated Buss Wire
- The sizes I find most useful are 22AWG, 24AWG, 28AWG
- Teflon Tubing
- Goes over the uninsulated buss wire
Educational Kits and Rapid Prototyping Tools
