Passive components

info

Bus Pirate 5 REV8 preview is no longer in production. See the latest version.

Resistors 1% 0402

Reference	Package	Value	Quantity	Rating	Note
R201 R204	0402	5.1K	2	>=1/16th Watts	1%
R202 R203	0402	22R	2	>=1/16th Watts	1%
R401 R412	0402	100K	2	>=1/16th Watts	1%
R403	0402	102K	1	>=1/16th Watts	1%
R101 R502 R602 R603	0402	1K	4	>=1/16th Watts	1%
R405 R408 R409 R604 R605	0402	33K	5	>=1/16th Watts	1%
R104 R105 R312 R402 R406 R407 R410 R501 R606 R609 R610 R611 R613	0402	10K	13	>=1/16th Watts	1%
R103 R208 R608 R612 R614 R615	0402	200R	6	>=1/16th Watts	1%
R404	0402	133K	1	>=1/16th Watts	1%

• Manufacturers: Any. We've been using UniRoyal (UniOhm/RoyalOhm).

Any standard quality 1% resistor can be used.

tip

1K (R602, R603), 33K (R405, R604, R605), 102K (R403), 133K (R404) are used in analog circuits. Confirm they are 1% tolerance.

Resistor arrays 5% 0402x4 convex

Reference	Package	Value	Quantity	Rating	Note
RN301 RN305 RN306 RN309 RN313 RN314 RN400 RN401 RN402	0402x4 convex	330R	9	>=1/16th Watts	5%
RN311 RN312	0402x4 convex	10K	2	>=1/16th Watts	5%
RN303 RN308	0402x4 convex	100K	2	>=1/16th Watts	5%
RN302 RN304 RN307 RN310	0402x4 convex	1M	4	>=1/16th Watts	5%

Any standard quality 5% 0402x4 resistor array can be used. Convex type (leads on the tips of each resistor). We've been using UniRoyal (UniOhm/RoyalOhm).

Resistor 5% 0805

Reference	Package	Value	Quantity	Rating	Note
R209	0805	33R	1	>=1/10th Watts	5%

Any standard 5% resistor can be used. This is a current limiting resistor for the LCD back-light, tolerance is not important. We've been using UniRoyal (UniOhm/RoyalOhm).

Resistor 0.2R 1% 2W 2512

Reference	Package	Value	Quantity	Rating	Note
R601	2512	0.2R	1	>=2 Watts	1%, <=100ppm/C

Any standard 1% 2512 package resistor can be used. It is best to have the lowest ppm/C possible. 50-100ppm/C is inexpensive and readily available.

• RLP25FEER200
• STE2512S2W0R200F
• HoGT2512-2W-200mR-1%

Ceramic Capacitors 10 or 16 volts 0402

Reference	Package	Value	Quantity	Rating	Note
C105 C106	0402	15pF	2	>=10 volts
C103 C110 C111 C112 C113 C114 C115 C116 C117 C118 C301 C302 C303 C304 C305 C306 C307 C308 C309 C310 C311 C312 C313 C314 C315 C316 C317 C318 C403 C406 C501 C502 C503 C602 C605 C701 C702 C703 C704 C705 C706 C707 C708 C710 C712 C713 C714 C715 C716 C717 C718	0402	0.1uF	51	>=10 volts
C104 C107 C108 C109 C402 C405 C601	0402	2.2uF	6	>=10 volts
C101 C102 C201 C202 C401 C404 C407	0402	4.7uF	8	>=10 volts	<2ohms ESR
C408	0402	120pF	1	>=10 volts

• Manufacturers: Any. We use Samsung.

Any standard quality capacitors rated for 10 volts or more can be used.

danger

4.7uF is used with voltage regulators and should be a "low ESR" type with 2ohm or less ESR.

Diode 1N4148 SOD-323

Reference	Package	Value	Quantity	Rating	Note
D401 D601 D602 D603	SOD-323	1N4148	4

Standard 1N4148 diode, any manufacturer.

tip

Several manufacturers make a 1N4148 diode and also several of the transistors in this BOM. See the table in the Transistors and FETs section of the sourcing guide.

Inductor 22uH 50mA+ 0603

Reference	Package	Value	Quantity	Rating	Note
L100	0603	22uH	1	>=50mA (>=150mA surge)

This inductor prevents brown out resets due to voltage level drop when an TF flash card is inserted into the socket. It should be 22uH (typically ~+/-25%) capable of 50mA current or greater. If there is a surge current rating it's best to look for >=150mA, but this isn't always specified and TF flash cards generally use well under 40mA. The other values are not critical.

Any manufacturer is fine if you can find it, this is an example:

• MLZ1608M220WT000 (TDK)

danger

TDK seems to be the only manufacturer of these high current miniature inductors in 0603. There are also wire wound inductors with a cute little "truth window" in the top: these are about half the price. However they are an exposed inductor coil and the RF effects may be an issue, so we chose not to FCC qualify with a cheaper part. We may look into it in the future, if only because it feels dirty to rely on a single supplier component in these times of uncertain supply chains.

Ferrite Bead 1.5A 0805

Reference	Package	Value	Quantity	Rating	Note
L201	0805	Ferrite bead	1	>=1.5A	<100Ohms @ 100MHz

This ferrite bead filters RF interference to/from the USB cable. The part must be rated for 1.5Amps or more, but the other values are not critical. Ideally it should have less than 100Ohms resistance at 100MHz (typically 15 or 30Ohms @ 100MHz). Tolerance is not important, typically +/-25%.

tip

The same bead used on the previous Bus Pirate versions will work.

Any manufacturer is fine, these are only examples:

• MMZ1608Y300BTD25
• MMZ1608R150ATD25
• SCBM201209U300T