Qty | Reference | Value | Manufacturer | Part Number | Price | |
5 | C1-C5 | See capacitor notes below. 10F 2.7V .075 ohm ESR, 5mm lead spacing | Maxwell Technologies Inc | BCAP0010 P270 T01 | 2.99 | 14.95 |
5 | Alt | Better ESR and tolerance | Eaton Bussman | HV1030-2R7106-R | 3.23 | |
5 | Alt | Better ESR and tolerance, Better life at high temperatures | NessCap Co Ltd | ESHSR-0010C0-002R7 | 3.72 | |
1 | C6 | 10uF 25V X7R 5 mm lead spacing | TDK | FK26X7R1E106K | 0.63 | 0.63 |
4 | C7-C9, C19 | 22uF 10V X7R 5 mm lead spacing | TDK | FK20X7R1A226M | 0.63 | 2.52 |
9 | C10-C19 | .1uF X7R 2.5 mm lead spacing | Vishay | K104K15X7RF53L2 | 0.10 | 0.90 |
2 | D1,D3 | 1N5820 20V, 3A, .5V, Typ .25V at .5A | Fairchild Semiconductor | 1N5820 | 0.49 | 0.98 |
1 | D2 | Red LED T-1 3/4 | Kingbright | WP7113LSRD | 0.17 | 0.17 |
1 | F1 | 3A fuse | Littelfuse | 0251003.MXL | 0.71 | 0.71 |
REF | J1 | 20 pin edge connector | ||||
REF | J2 | 34 pin edge connector | ||||
3 | J3,J6,J7 | Shrouded 20 pin .1” dual row .23” mating length, .095” tail length .030uin GXT plating | FCI | 75869-104LF | 1.35 | 4.05 |
Alt | 10uin gold of above | 3M | D2520-6002-AR | 1.89 | ||
Alt | Not recommended for J7 | Unshrouded 20 pin .1” dual row .23” mating length, .095” tail length .030uin GXT plating | FCI | 67996-220HLF | 0.70 | |
1 | J4 | Shrouded 34 pin .1” dual row .23” mating length, .095” tail length .030uin GXT plating | FCI | 75869-106LF | 1.95 | 1.95 |
Alt | 10uin gold of above | 3M | D2534-6002-AR | 1.80 | ||
Alt | Unshrouded 34 pin .1” dual row .23” mating length, .095” tail length .030uin GXT plating | FCI | 67996-134HLF | 1.43 | ||
Alt | 10uin gold of above | Sullins | PBC17DAAN | 2.55 | ||
1 | J5 | Right angle drive power connector | Molex | 15-24-4441 | 1.24 | 1.24 |
2 | J8,J9 | 46 pin .1” dual row .23” mating length, .095” tail length. 50 Pin purchased since common and extra gives P1 and P4. Some distributors sell 46 pin. .030uin GXT plating | FCI | 67996-150HLF | 1.53 | 3.06 |
Alt | 10uin gold | Sullins | PBC25DAAN | 3.41 | ||
Alt | 10uin gold, 46 pin | Sullins | PBC23DAAN | 3.19 | ||
1 | P1, P9 | 2 pin .1” .23” mating length, .095” tail length | Leftover from J8,J9 | 0.00 | ||
REF | P2,P3, P5, P6, P10, P11 | Holes for power/ground pickup if needed | ||||
1 | P4 | 4 pin .1” dual row .23” mating length, .095” tail length | Leftover from J8,J9 | 0.00 | ||
2 | P7, P8 | 8 pin .1” dual row .23” mating length, .095” tail length .030uin GXT plating | FCI | 67996-208HLF | 0.93 | 1.86 |
10uin gold | Sullins | PBC04DAAN | 1.17 | |||
14 | R1,R2,R3,R5-R7,R15,R17,R18,R20-R22, R24, R27 | 5.11k 1% 1/4 watt resistor. R15 only needs to be 1% | Yageo | MFR-25FBF52-5K11 | 0.10 | 1.40 |
Alt | KOA Speer | MF1/4DC5111F | 0.06 | |||
Alt | Stackpole Electronics | RNF14FTD5K11 | 0.15 | |||
6 | R8-R12, R14 | 1k 1% 1/4 watt resistor. Don't need to be 1% | Yageo | MFR-25FBF52-1K | 0.10 | 0.60 |
Alt | KOA Speer | MF1/4DC1001F | 0.06 | |||
1 | R13 | 10 ohm 3W resistor. 14W peak power. Limits charging current to 1.2A, | Vishay | RWM041010R0JR15E1 | 0.63 | 0.63 |
1 | R16 | 732 ohm 1% resistor | Yageo | MFR-25FBF52-732R | 0.10 | 0.10 |
Alt | KOA Speer | MF1/4DC7320F | 0.06 | |||
KOA Speer | MF1/4DCT52R7320F | 0.06 | ||||
1 | R19 | 267 ohm 1% resistor | Yageo | MFR-25FBF52-267R | 0.10 | 0.10 |
Alt | KOA Speer | MF1/4DC2670F | 0.06 | |||
2 | R4,R23 | 100 ohm 1% resistor. 5% should be ok | Yageo | MFR-25FBF52-100R | 0.10 | 0.20 |
1 | R25 | 51.1k ohm 1% resistor. 5% should be ok | Yageo | MFR-25FBF52-51K1 | 0.10 | 0.10 |
Alt | KOA Speer | MF1/4DC5112F |
0.12 | |||
1 | R26 | 10k ohm 1% resistor. 5% should be ok | Yageo | MFR-25FBF52-10K | 0.10 | 0.10 |
2 | RN1-RN2 | 10 pin SIP 150 ohm terminator | Bourns | 4610X-101-151LF | 0.40 | 0.80 |
Alt | Bourns | 4310R-101-151LF | 0.79 | |||
1 | XRN1 | 10 pin SIP socket,10uin gold | Aries | 10-0518-10 | 1.79 | 1.87 |
Alt | Tin contacts | Aries | 10-0513-10T | 1.87 | ||
Alt | Gold flash, 50 cycles max | TE Connectivity | 1814655-7 | 1.86 | ||
Alt | 20u” gold | TE Connectivity | 1-1571994-0 | 4.71 | ||
1 | U1 | BEAGLEBONE BLACK | CircuitCo | BB-BBLK-000 | 55.00 | |
2 | U2,U5 | 74LVC245 3.3 to 5V translator 20 pin DIP | Texas Instruments | SN74LVC245AN | 0.60 | 1.20 |
2 | U4,U13 | RS422 transceiver SOIC-14 32 Mbos | Exar | SP3497EEN-L | 2.75 | 5.50 |
Alt | 26 Mbps | TI | SN65HVD33DR | 3.75 | ||
5 | U6-U10 | TL431LP 2.5V regulator | Fairchild Semiconductor | KA431AZTA | 0.38 | 1.90 |
1 | U11 | I2C 256kb EEPROM | ON Semiconductor | CAT24C256LI-G | 1.20 | 1.20 |
1 | U12 | 12V 1.5A DC/DC | Murata | OKR-T/1.5-W12-C | 3.97 | 3.97 |
Alt | See R24, R25 resistor note below for either U12 part | Artesyn | LDO03C-005W05-HJ | 8.24 | ||
4 | U14-U17 | 74ACT05 14 pin DIP | Texas Instruments | CD74ACT05E | 0.67 | 2.68 |
4 | P1, P7-P9 | .1 Jumper with handle | TE | 881545-5 | 0.17 | 0.68 |
Alt | .1 Jumper | 3M | 969102-0000-DA | 0.10 | ||
Total price excluding pcb | 111.05 | |||||
Power holdup price in total | 26.56 | |||||
Beaglebone price in total | 55.00 | |||||
Notes: | ||||||
U3 not used | ||||||
R24 and R25 values are for when a LDO03H is used for U12. If OKR-T/1.5-W12-C is used don't install R24 and R25 | ||||||
Capacitor notes: | ||||||
For C1-C5 there is a trade off between how well the capacitors fit and run time. . 3F is not sufficient if any significant amount of data waiting write-back to flash. 10F is plenty but won't fit standing up in half hight drive bay. 5F should be OK but capacity loss with aging may be a concern. | ||||||
These are possible 15F options | ||||||
5 | C1-C5 | Eaton Bussman | HV1325-2R7156-R | 4.1 | 20.50 | |
These are possible 5F options | ||||||
5 | C1-C5 | Eaton Bussman | HV1020-2R7505-R | 2.72 | 13.60 | |
5 | C1-C5 | Better life at high temperatures | NessCap Co Ltd | ESHSR-0005C0-002R7 | 2.72 | 13.60 |