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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.nkkswitches.com/pdf/G3pushbuttons.pdf

https://www.nkkswitches.com/pdf/CN0383_KP04IllumSMT.pdf

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://docs.broadcom.com/doc/ALMD-ExxE-DS

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

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