Stock Electronic Image FAILS

[Bud]

5% from 1/4W 

[jonovid]

5% tolerance on 0 ohms?
(Attachment Link)

what is the point of this?  just add a wire link or use the cut legs of other through hole resistors. 

[PlainName]

Could be 190..210 in there.

[adx]

Wonder if they make them in 1%?

I'm more worried about the carbon - graphene or nanotubes perhaps.

Oh yeah, just saw the other replies, 1/4W.

[RoGeorge]

- a "zero ohm resistor" is not mathematically zero, it means very small, for example 10m\$\Omega\$ or so

- it's convenient to have "zero" ohm resistors, for example to keep the PCB on a single layer, for dirt cheap consumer products.  If a 0\$\Omega\$ is placed on a PCB for no apparent reason (so not as a PCB jumper), that means it is there to desolder it during service then solder them back at the end, so to isolate parts of the schematic without cutting PCB traces.

- pieces of wire instead of 0\$\Omega\$ would work, too, but only for manual assembly.  For automated assembling machines, wire bridges are not a good option.

- the power rating is not bogus, it dictates the maximum allowed current, which is important to know if the 0\$\Omega\$ is used in the paths of a more power hungry circuit.  See a random Zero Ohm Resistors datasheet from YAGEO:  https://www.farnell.com/datasheets/3689368.pdf

[TimFox]

Zero ohm resistors sound silly to those unfamiliar with their use.  Reasons for use:
Insertable with automatic equipment.
Can be either smt or tht, depending on board.
Look betting to the purchaser than lead cut-offs.
Nominal “power” ratings correspond to case size.
Nominal tolerances probably from rigid BOM format by bean counter.

[NiHaoMike]

How many zero ohm resistors are just pieces of wire with a body molded over it to allow the assembly machines to handle them and how many are low value current shunts that failed the tolerance test?

[TimFox]

I submit that all THT zero ohm resistors are the former (wire inside molded package).
Note that they are not expensive components, and low-resistance shunts are often 4-terminal devices.

[McBryce]

5% tolerance on 0 ohms?
(Attachment Link)

[/quote]
what is the point of this?  just add a wire link or use the cut legs of other through hole resistors. 
[/quote]
Pick and place machines can deal with a through-hole part, but not a piece of wire.

Where's the problem? 0 ohm Resistors always have a tolerance value. Although I've yet to find one that was 5% lower than zero!

McBryce.

[TimFox]

Very funny.
Any zero ohm resistor will have an actual positive value, and therefore will be out of tolerance for any percentage tolerance value.

[NiHaoMike]

[xrunner]

It's a rare occurrence but they caught the sun oscillating. 

[Brumby]

It's a rare occurrence but they caught the sun oscillating. 

I was going to make a different comment - but I like yours much better. 

[adx]

I submit that all THT zero ohm resistors are the former (wire inside molded package).
Note that they are not expensive components, and low-resistance shunts are often 4-terminal devices.

All the 0R links I've seen are some sort of film (metal, obviously). I was interested in this (many) years ago and SFR16 and SFR25 series 0R are the standard axial resistor body with a metal film on it (no spiral trim!). Chip links have a metal film, which looks to be printed and sintered like usual thickfilm stuff, but couldn't say for sure. It was different from the endcap plating.

I was looking at them on Wikipedia a few days ago (trying to identify a symbol on a motherboard schematic) and saw that it says it's wire too, probably can't cite my memory as a reliable source.

I've always been a bit dubious about people putting the entire supply current through them (or ferrite beads), but they seem to be ok. (Talking about tiny SMT ones.)

[PlainName]

SFR16 and SFR25 series 0R are the standard axial resistor body with a metal film on it (no spiral trim!)

That would make sense - no change in manufacturing process so everything is cheap and easy. If they made these with wires or something then they'd have to have a different line just for these.

a bit dubious about people putting the entire supply current through them

1/4W through 0.01R is 25A - a higher resistance than that probably isn't 0R. I wouldn't risk it, though

[Fungus]

what is the point of this?  just add a wire link or use the cut legs of other through hole resistors. 

[NiHaoMike]

2 for 1 Facebook special today.

[adx]

1. they forgot the "image out" interface (top surface)

2. took me far too long to see!

[SteveThackery]

2. took me far too long to see!

And me! 

PS: that first pic is magnificent. Hats off to 'em.

[PA0PBZ]

Me 3!

Q: What part don't you understand?
A: The center part

[NiHaoMike]

[Analog Kid]

An extra pin!
I want it!

[Zoli]

An extra pin!
I want it!

I think you already have it on the existing ones, since is standard(the 5th pin play roles in OTG).

[Nominal Animal]

The picture is of an USB mini-B connector.

[Ranayna]

Well.... The image is certainly correct in my opinion, if you consider the "bane of my existence" part
Mini-B USB is an absolute shit connector. Micro-B is leagues ahead of Mini-B.