Bill of Materials
This is the bill of materials for our nRF51822 powered OpenBeacon tag.
| Designator | Description | Comment | Value | tol. | Qty | Supplier | Supplier Part Number |
| BT1 | Keystone 3034 | Battery Cell Holder | 3V | 1 | Mouser | 534-3034TR | |
| C1, C2 | Capacitor | 12pF | 12pF | 2%, NPO | 2 | Digi-Key | 490-8078-2-ND |
| C10 | Capacitor | 47nF | 47nF | X7R, 10% | 1 | Digi-Key | 587-2240-2-ND |
| C12 | Capacitor | 1.0uF | 1.0uF | X7R, 10% | 1 | Digi-Key | 587-1241-2-ND |
| C3 | Capacitor | 2.2nF | 2.2nF | X7R, 10% | 1 | Digi-Key | 587-1221-2-ND |
| C4 | Capacitor | 0.8pF | 0.8pF | NP0, 5% | 1 | Digi-Key | 490-6270-2-ND |
| C5, C6 | Capacitor | 20pF | 20pF | NP0, 5% | 2 | Digi-Key | 490-6217-2-ND |
| C7, C13, C15 | Capacitor | 4.7uF | 4.7uF | X5R, 10% | 3 | Digi-Key | 490-3297-2-ND |
| C8, C11, C14, C16, C17, C18 | Capacitor | 100nF | 100nF | X7R, 10% | 6 | Digi-Key | 490-6328-2-ND |
| C9 | Capacitor | 1nF | 1nF | X7R, 10% | 1 | Digi-Key | 490-1303-2-ND |
| D1 | LED | LED blue | 20mA | 1 | Digi-Key | LNJ937W8CRATR-ND | |
| D2 | Schottky barrier diode | SC-90A | 1A, 30V | 1 | Digi-Key | DB2J31700LTR-ND | |
| L4 | Inductor / Spule | 10uH | 10uH | 10% | 1 | Digi-Key | 587-1714-2-ND |
| L5 | Inductor / Spule | 15nH | 15nH | 5% | 1 | Digi-Key | 587-1521-2-ND |
| P2 | Header, 9-Pin | HDR1X9_round_custom-SMD | 0 | only footprint | |||
| P3 | Taster | Taktil_PTS252 | 1 | Digi-Key | CKN10229TR-ND | ||
| R1, R2, R3 | Resistor | 12k | 12k | 1% | 3 | Digi-Key | RHM12.0KCDTR-ND |
| U1 | RF and flash | nRF51822 128kB flash | 1 | Mouser | 949-NRF51822-QFAB-R7 | ||
| U2 | LIS3DH, MEMS digital output motion sensor | LIS3DH | 1 | Mouser | 511-LIS3DHTR | ||
| U3 | serial interface Flash memory (1.7V-3.6V) | AT45DB641E / 64Mb | 64Mb | 1 | Digi-Key | AT45DB641E-MHN-TTR-ND | |
| U4 | ANT-2.54-CHP, 2.45GHz Ultra-Compact Chip Antenna | ANT-2.54-CHP | 1 | Mouser | 712-ANT-2.45-CHP-T | ||
| U5 | ST BAL-NRF01D31 | BAL-NRF01D3 | 1 | Digi-Key | 497-13637-2-ND | ||
| X1 | ABM8 ceramic crystal | 16MHz | 16MHz | 1 | Digi-Key | 644-1182-2-ND | |
| X2 | Crystal | 32.768kHz, 12.5pF | 32.768kHz, 12.5pF | < 20ppm | 1 | Digi-Key | 535-10104-2-ND |