Roles and Responsibilities
My job is to develop the web server and transmit data over Wi-Fi. The listed components are used to regulate the incoming voltage to my ESP32 device, ensuring reliable message transmission.
Voltage regulators
Selected Option
| Solution | Pros | Cons |
|---|---|---|
 Option 1. LM2575T-3.3G Voltage regulator $2.99/each link to product |
* Its pretty inexpensive * Compatable with ESP32 |
* This is not surface mount. |
 * Option 2. * LM2575T-3.3G Voltage regulator Onsemi * $2.99/each * Link to product |
* Stable Tempurature * Regulates at 3.3V |
* Less documentation |
* Option 3. *998-LM2575T-3.3G Voltage regulator Onsemi * $1.75/each * Link to product |
* Surface mount * Regulates at 3.3V * Very affordable |
* more complicated to solder |
Choice: Option 3: 998-M2575T-3.3G Voltage regulator Surface Mount Version
Rationale: This product is from Mouser, it also has great documentation as well as meeting the surface mount requirements.
Schottky Diodes
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. 1N5819HWQ-7-F $0.30/each link to product |
* Has many low voltage applications * Can handle strong current spikes * Meets surface mount constraint of project |
* Requires external surface mount soldering *Cant handle alot of current |
* Option 2. *1N5819W Diode * $0.21/each * Link to product |
* resists alot of back EMF * Stable over operating temperature |
* More fragile diode than the other options *Has a bit more reverse leakage |
* Option 3. *1N5817G * $0.41/each * Link to product |
* Surface mount * Regulates at 3.3V * Very affordable |
*This is not a surface mount component |
Choice: Option 1: 1N5819HWQ-7-F Diodes
Rationale: A reliable diode that can handle lots of current and voervoltage if neccesary. A solid option that also meets the surface mount requirement
100 uF 50V Capacitors
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. EEEFP1H101AL $1.08/each link to product |
* is made from aluminum * very high tempurature opperation * low capacitive resistance |
* slightly more expensive *Data sheet is not very good |
* Option 2. *NACZ101M50V8X10.5TR15F * $0.75/each * Link to product |
* resists alot of back EMF * Is rated for 200V * can be bought in bulk for a discount |
* Its a larger capacitor * does not have a good bulk idscount |
* Option 3. *1N5817G * $1.41/each * Link to product |
* Surface mount *good vendor * good voltage rating |
* shows no application circuit |
Choice: Option 3: 1N5817G
Rationale: Although this is the most expensive, it meets all requirements with its size and polarization.
330 uF 10V Capacitors
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. 593D337X9010E2TE3 $1.08/each link to product |
* is made from aluminum * very high tempurature opperation * low capacitive resistance |
* non intuitive data sheet |
* Option 2. *NACZ101M50V8X10.5TR15F * $1.49/each * Link to product |
* resists alot of back EMF * Is rated for 200V * can be bought in bulk for a discount |
* From an untrustworthy website |
* Option 3. *EEE-FP1A331AP * $1.41/each * Link to product |
* Surface mount * smallest size * good voltage rating |
* most expensive option |
Choice: Option 3 : EEE-FP1A331AP<br
Rationale: Its the smallest size and has unbeatable price.
220 uH Inductors
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. Wurth Elektronik 744777202 Power inductor $2.16/each link to product |
* small size * very high tempurature opperation * |
* slightly more expensive |
* Option 2. *NACZ101M50V8X10.5TR15F * $1.49/each * Link to product |
* resists alot of back EMF * Is rated for 200V * can be bought in bulk for a discount |
* Its a larger inductor to solder |
* Option 3. * 744777222 Power inductor * $.86/each * Link to product |
* Surface mount * highest opperation tempurature * good voltage rating |
* its on a different website |
Choice: Option 1: Wurth Elektronik 744777222 Power inductor
Rationale: This component has the best data sheet out of the bunch and seems to be the easiest to work with
Barrel Jacks
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. PJ-018H link to product |
* only has two prongs * has a very flexable votlage range input *Handles high amperage |
* slightly more expensive * has bad dimentions that dont match with supply |
* Option 2. *PJ-006B * $1.49/each * Link to product |
* resists alot of back EMF * Is rated for 200V * can be bought in bulk for a discount |
* Its rated for 16 Volts * Has strange connections to power and GND |
* Option 3. *DCJ250-05-A-K1-A * $1.41/each * Link to product |
* Surface mount * smallest size * good voltage rating |
* most expensive option |
Choice: Option 3: DCJ250-05-A-K1-A
Rationale: Its the only one that incorporates surface mounting.
wall mounted power supply
Selected Option
| Solution | Pros | Cons |
|---|---|---|
Option 1. L6R06H-120 * $6.75/each *link to product |
* Short wire reach *Has very low current output which reduces the chances of EMF *The cheapest option |
*worst quality plug |
* Option 2. WDU12-100 * $10.73/each * Link to product |
*Low power surges * fits the selected barrel jack port |
* Its a larger plug |
* Option 3. *L6R12-120 * $8.52/each * Link to product |
* can supply more current if needed * can operate in high tempuratures |
*needs to be regulated because of high current capability |
Choice: Option 3: L6R12-120
Rationale: This product fits the systems needs with its voltage, land reliable documentation.