Qty	Reference	Value	Manufacturer	Part Number	Price
5	C1-C5	See capacitor notes below. 10F 12.5x20mm, fits standing on bottom	AVX	SCCT20B106PRB	2.99	14.95
Alt		See capacitor notes below. 10F 12.5x20mm, fits standing on bottom	AVX	SCCT20B106SRB	2.99
Alt		10F 2.7V .075 ohm ESR, 10x30mm, 5mm lead spacing	Maxwell Technologies Inc	BCAP0010 P270 T01	2.99
Alt		Similar to primary choice	AVX	SCCS30B106SRB	3.13
Alt		Better ESR and tolerance	Eaton Bussman	HV1030-2R7106-R	3.23
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
2	C7, C19	22uF 10V X7R 5 mm lead spacing. Also for C8, C9 if needed	TDK	FK20X7R1A226M	0.63	1.26
			TDK	FK20X7R1C226M	0.64
Alt			TDK	FG20X7R1C226MRT06	0.90
10	C10-C16, C18, C20, C21	.1uF X7R 2.5 mm lead spacing	Vishay	K104K15X7RF53L2	0.10	1.00
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
2	D4, D5	20V Schottky diode	STMicroelectronics	1N5817	0.23	0.46
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	TE Connectivity	641737-1	2.28	2.28
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	1.80	3.60
Alt		10uin gold	Sullins	PBC25DAAN	3.41
Alt		10uin gold, 46 pin	Sullins	PBC23DAAN	3.19
0	J10	Pickup for +5 and +12 if desired
1	P1	2 pin .1” .23” mating length, .095” tail length	Leftover from J8,J9			0.00
1	P9	3 pin .1” .23” mating length, .095” tail length	FCI	77311-101-03LF	0.27	0.27
REF	P5, P6, P10, P11	Holes for power/ground pickup if needed
0	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	67996-108HLF	0.45	0.90
		10uin gold	Sullins	PBC04DAAN	1.17
10	R1,R2,R5-R7,R15,R20-R22, R27	5.11k 1% 1/4 watt resistor. R15 only needs to be 1%	Yageo	MFR-25FBF52-5K11	0.10	1.00
Alt			KOA Speer	MF1/4DC5111F	0.06
Alt			Stackpole Electronics	RNF14FTD5K11	0.15
7	R3,R8-R12, R14	1k 1% 1/4 watt resistor. Don't need to be 1%	Yageo	MFR-25FBF52-1K	0.10	0.70
Alt			KOA Speer	MF1/4DC1001F	0.06
1	R24	3.32k 1% resistor. See U12 notes	Yageo	MFR-25FBF52-3K32	0.10	0.10
1	R25	75k 1% resistor. See U12 notes	Yageo	MFR-25FBF52-75K	0.10	0.10
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. See U12 notes	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	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
2	XRN1, XRN2	10 pin SIP socket,10uin gold	Aries	10-0518-10	1.79	3.58
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 Green	Seeed	102010027	49.50	49.50
Alt		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 40 MBPS	Renesas / Intersil	ISL3180EIBZ	3.54	7.08
alt		26 Mbps	TI	SN65HVD33DR	3.75
Alt		RS422 transceiver SOIC-14 32 Mbos	Exar	SP3497EEN-L	2.75
5	U6-U10	TL431LP 2.5V regulator	Fairchild Semiconductor	KA431AZTA	0.38	1.90
0	U11	I2C 256kb EEPROM	ON Semiconductor	CAT24C256LI-G	1.20	0.00
1	U12	12V 1.5A DC/DC	Artesyn	LDO03C-005W05-HJ	8.75	8.75
Alt		See R24, R25 resistor note below for either U12 part	ABB Power/GE	IND011SIP	5.96
Alt		See R24, R25 resistor note below for either U12 part	Murata	OKR-T/1.5-W12-C	3.97
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		112.41
				Power holdup price in total		29.02
				Beaglebone price in total		49.50
Notes:
P2, P3, U3 not used
U11, R17, R18, C8, C9, C17, P4 normally not installed so quantity 0. R17, R18 were 5.1k, C17 was .1uf.
U12 Part		R24	R25	C7	C8	C9	R19
LDO03C-005W05-HJ		3.32k	75k	Installed	Not installed	Not installed	267
IND011SIP		Not installed	Not installed	Installed	Not installed	Not installed	2.74k
OKR-T/1.5-W12-C		1k	5.1k	Installed	Installed	Installed	267
With specified R24,R25 LDO03H starts up at about 7.7V and shuts down at 5.5V. IND011SIP output is unstable if R24 and R25 are used to try to control on and off voltage. Without resistors after it looses regulation it passes through the input voltage with a drop. Does not seem to cause any problems. Slow rising 12V input may cause beaglebone startup problems with this part. That problem was seen rarely with the OKR part before resistors installed.
Capacitor notes:
For C1-C5 there is a trade off between how well the capacitors fit and run time. The current primary capacitor will fit in ½ height bay with capacitors mounted on bottom of board. The alternate choices will not unless installed laying down. During testing 3F is not sufficient if any significant amount of data waiting write-back to flash. 5F should be OK but capacity loss with aging may be a concern. No great reason to use these options but left here anyway.
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
You may also want to purchase parts for drive activity LED. Order 1 or 2 more of the LED's on the BOM depending on the number of drives you plan to emulate. If you are wanting to put them in the existing faceplate you may need rectangular LEDs. Since the BBB only provides 6mA you may wish them to be high efficiency. Order 1 more of the 267 ohm resistors. If you want LED's brightest order 215 or 220 ohm resistor.
You will need a cable to plug into J7 unless you don't install J7 and solder to board. One option is cut up a pre-built ribbon cable.
Also these cables should work for the second data cable for J6 for two drive emulation.
1		20 Pin ribbon cable gray 1.5ft	3M	M3AAA-2018J	3.32	3.32
alt		20 Pin ribbon cable multicolor 1.5ft	3M	M3AAA-2018R	4.29
alt		20 Pin ribbon cable mulitcolor 3.2ft	Advantech	PCL-10120-1E	5.00
alt		20 Pin ribbon cable 1 ft	Harwin	M50-9111042	11.34
You can also buy discrete wire housings and contacts. They can be difficult to crimp without the proper tool. I solder when needed for reliable joint. Buy extra since you are likely to damage one.
1		20 Pin housing	Harwin	M20-1071000	0.69	0.69
3		Contact 22-30 AWG	Harwin	M20-1160042	0.13	0.39
		Pick stranded wire 22-26 AWG