Parts (Electronics): Difference between revisions
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| [http://www.st.com/web/en/resource/technical/document/datasheet/CD00000895.pdf 2N3055] | | [http://www.st.com/web/en/resource/technical/document/datasheet/CD00000895.pdf 2N3055] | ||
|- | |- | ||
| N- | | N-chan MOSFET (TO-92) | ||
| $2.01 / 50 | | $2.01 / 50 | ||
| 60v 200mA | | 60v 200mA | ||
| 2N7000 | | 2N7000 | ||
|- | |- | ||
| P- | | P-cha MOSFET (TO-92) | ||
| $14 / 50 | | $14 / 50 | ||
| 45v 230mA | | 45v 230mA | ||
| [http://www.diodes.com/_files/datasheets/BS250P.pdf BS250] Note cost compared to N-chan | | [http://www.diodes.com/_files/datasheets/BS250P.pdf BS250] Note cost compared to N-chan | ||
|- | |||
| N-chan MOSFET (TO-220) | |||
| $2.95 / 10 | |||
| 100v 9.7A | |||
| [http://www.redrok.com/MOSFET_IRF520N_100V_9.7A_200mO_Vth4.0_TO-220.pdf IRF520N] | |||
|- | |||
| P-cha MOSFET (TO-220) | |||
| $2.38 / 10 | |||
| 100v 23A | |||
| IRF9540 | |||
|- | |- | ||
| Diode | | Diode | ||
| Line 106: | Line 116: | ||
The TO-220 transistors are often sold in PNP/NPN pairs. | The TO-220 transistors are often sold in PNP/NPN pairs. | ||
== Packages == | == Packages == | ||
Revision as of 18:53, 10 November 2015
IC
| Part | Name | Cost | Notes |
|---|---|---|---|
| 555/556 | Timer | $2.15 / 50 | |
| LM741 | Op Amp | $1.20 / 10 | |
| LM317 | Linear reg. | $1.30 / 10 | |
| LM78xx | Linear reg. | $1.30 / 10 | The xx is the voltage; 05,06,08,10,12,15,18,24 |
Microcontrollers
| Name | Cost | I/O | Flash | Speed | Peripherals | Notes |
|---|---|---|---|---|---|---|
| ATTINY85 | 60¢ | 6 | 8K | 2pwm, 2-8 timer, 1adc | 20MHz | Small dev boards are available for around $1.75 |
| ATMEGA8 | 90¢ | 23 | 8K | 16MHz | 3pwm, 2adc, 2-8/1-16 timer | Small dev boards are available for around $1.75 |
Modules
| Name | Cost | Description |
|---|---|---|
| Voltage Meter | $2.00 | 3x7seg LED, generally wide ranges of voltages |
| Buck Module | $2.50 | (4-40v) → (1.3-37v) @ 2A; includes led panel. Found a 9A version for $5, no display. |
Semiconductors
| Part | Cost | Limit | Part |
|---|---|---|---|
| PNP BJT (TO-92) | $1.43 / 100 | 40v 200mA | 2N3906 |
| NPN BJT (TO-92) | $1.20 / 100 | 60v 200mA | 2N3904 |
| PNP BJT (TO-220) | $2.60 / 50 | 100v 3A | https://www.fairchildsemi.com/datasheets/TI/TIP32C.pdf TIP32] |
| NPN BJT (TO-220) | $2.6 / 50 | 60v 3A | TIP31 |
| PNP BJT (TO-3) | $4.87 / 5 | 60v 10A | MJ2955 |
| NPN BJT (TO-3) | $2.60 / 5 | 60v 15A | 2N3055 |
| N-chan MOSFET (TO-92) | $2.01 / 50 | 60v 200mA | 2N7000 |
| P-cha MOSFET (TO-92) | $14 / 50 | 45v 230mA | BS250 Note cost compared to N-chan |
| N-chan MOSFET (TO-220) | $2.95 / 10 | 100v 9.7A | IRF520N |
| P-cha MOSFET (TO-220) | $2.38 / 10 | 100v 23A | IRF9540 |
| Diode | $1.25 / 100 | 1000v 1A | 1N4007 |
The TO-220 transistors are often sold in PNP/NPN pairs.
Packages
| Name | Description |
|---|---|
| TO-92 | Small black, semi circle, 3 leads from the bottom |
| DIP | dual in-line pin, pins are 1/10" apart, 1/4" wide |
| TO-3 | metal can, good for heat dissipation, cheap heat-sinks, shaped like a rounded diamond about 1"x1.5", leads are .43" apart |
| TO-220 | metal tab heatsink |
TO stands for transistor-outline.
Linear Components
Resistors
Resistors are typically 1/4W. The cost for these is negligible, assortment packages typically come in around 0.6¢ per resistor. To handle higher wattage, they can be used in parallel.
Capacitors
Electrolytic up to 220uF are very cheap (2.8¢) and available in assortment packs. Up to 2200uf is still pretty cheap, 7.5¢ with a 1000uF@10v cap coming in around 5.6¢. Beyond this, the goes up rapidly for either additional capacitance or voltage with a 2200uF@25v around 50¢.
Ceramics are cheap up to 100nf, also available in assortment packs (0.4¢).
Inductors
Small inductors are fairly cheap; assortment packs of 1/2w from 1uH to 4.7mH 5.5¢ a piece. They look like resistors.