Decision Matrix for Buzzer
CMT-85853-97-SMT-TR | CPT-9019S-SMT-TR | CSS-0578-SMT-TR | |
|---|---|---|---|
Voltage | 3.0V-5V (typ 3.6V) | 25V | 2V-4V (typ 3V) |
Type | Magnetic | Piezo | Magnetic |
Size | 8.5x8.5x3.0mm | 9x9x1.9mm | 5x5x3mm |
Connection | Surface Mount | Surface Mount | Surface Mount |
Current | 80mA | 5mA | 95mA |
Volume | 97dBA | 65dBA | 78dBA |
Price | $2.47 | $2.39 | $2.97 |
Link | https://www.cuidevices.com/product/resource/cmt-85853-97-smt-tr.pdf | https://www.cuidevices.com/product/resource/cpt-9019s-smt-tr.pdf | https://www.cuidevices.com/product/resource/css-0578-smt-tr.pdf |
Note:
Magnetic buzzers typically reproduce lower tones while piezo buzzers deal with higher tones.
Decision:
CSS-0578-SMT-TR
Accompanying Diode:
https://www.digikey.ca/en/products/detail/onsemi/1N4148WS/1873805
Decision Matrix for Button
G3B15AP-S-YA | KP0415ANG03RGBP-2SJB | TL2233OA | KPT-1187B | |
|---|---|---|---|---|
Voltage | 28V | 12V | 30V | 12V |
Current | 100mA | 100mA | 100mA | 50mA |
Size | 5.0x8.5x12.3mm | 15x15x23mm | 8x5.8x7.9mm | 5.2x6.4x1.6mm |
Connection | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Price | $11.75 | $19.74 | $0.69 | $1.05 |
Link | https://www.digikey.ca/en/products/detail/e-switch/TL2233OA/15220943 | https://www.sparkfun.com/datasheets/Components/Buttons/SMD-Button.pdf |
Note:
KP0415ANG03RGBP-2SJB is light up button that can change colors.
All buttons are momentary push buttons
Decision:
KPT-1187B
Decision Matrix for LED
ALMD-EG2E-XZ002 | QBLP670D-IW-WW-2897 | IN-P36BTEG | LTST-C191KRKT | |||||
|---|---|---|---|---|---|---|---|---|
Voltage | 2.1V | 2.8V | 3V | |||||
Current | 20mA | 20mA | 30mA | |||||
Brightness | 11600mcd | 7500mcd | 6000mcd | |||||
Viewing Angle | 23° | 30° | 60° | |||||
Connection | Surface Mount | Surface Mount | Surface Mount | |||||
Color | Red | Warm White | Green | |||||
Price | $1.59 | $0.85 | $0.87 | |||||
Link | https://www.qt-brightek.com/datasheet/QBLP670D-IW-WW-2897.pdf | https://www.inolux-corp.com/datasheet/PLCC_withLens/IN-P36BTEG_v1.0.pdf | https://www.digikey.ca/en/products/detail/liteon/LTST-C191KRKT/386837 | |||||
Decision:
LTST-C191KRKT
Accompanying resistor:
https://www.digikey.ca/en/products/detail/vishay-dale/CRCW060382R0FKEAC/7928455
Justification:
(Rail Voltage - LED Forward Voltage)/LED Current = Resistance
(3.3V-2V)/0.02A = R
Resistance is about 87 Ohms.
Locking Connector:
PCB Header
https://www.molex.com/molex/products/part-detail/pcb_headers/0781710005
Cable Assembly
https://www.molex.com/molex/products/part-detail/cable_assemblies/0369200401