What's this please? (Component Advice)

[wiss]

Thanks!
Using the pinout of this: http://www.digikey.com/product-detail/en/ECS-100AX-500/X951-ND/827244
I made it work from about 3 V. Are they any good? Or just very convenient?

[elgonzo]

Thanks!
Using the pinout of this: http://www.digikey.com/product-detail/en/ECS-100AX-500/X951-ND/827244
I made it work from about 3 V. Are they any good? Or just very convenient?

Mostly convenience. A crystal would need some circuity to turn the oscillating voltage from the crystal into a clock signal. Usually MCUs and such have such circuity integrated. An oscillator already provides a clock signal (TTL/CMOS/whatever) without requiring additional circuity somewhere else.

However, nowadays, crystals are preferred. Not only because the BOM will likely be cheaper, but also it is easier to realize low power applications (a MCU can easily shutdown its clock generator if it goes to sleep -- try to do this with an external oscillator...)

[Howardlong]

Thanks!
Using the pinout of this: http://www.digikey.com/product-detail/en/ECS-100AX-500/X951-ND/827244
I made it work from about 3 V. Are they any good? Or just very convenient?

Mostly convenience. A crystal would need some circuity to turn the oscillating voltage from the crystal into a clock signal. Usually MCUs and such have such circuity integrated. An oscillator already provides a clock signal (TTL/CMOS/whatever) without requiring additional circuity somewhere else.

However, nowadays, crystals are preferred. Not only because the BOM will likely be cheaper, but also it is easier to realize low power applications (a MCU can easily shutdown its clock generator if it goes to sleep -- try to do this with an external oscillator...)

It depends on the requirements. For example, if you need an accurate oscillator, say 2ppm or better, you're going to need an external canned oscillator such as a TCXO.

[elgonzo]

It depends on the requirements. For example, if you need an accurate oscillator, say 2ppm or better, you're going to need an external canned oscillator such as a TCXO.

You are right. TXCOs are also available in these 4-pin TH packages. But i guess they would be designated specifically on the package, hence my assumption that the SE-TIME osc. in the picture would not be a TXCO. Or are there TXCOs that are not marked as such?

[synapsis]

I figure this is the closest thread for this question, since I already know what it is. I just need to know where to get it. About 4 years ago, our EE sourced this pogo pin, and he's no longer with the company.

Thanks in advance!

[miguelvp]

... since I already know what it is. I just need to know where to get it....

If you already know what is it, why don't you share so others can help you find it instead of they having to figure that out first?

[Richard Crowley]

If you already know what is it, why don't you share so others can help you find it instead of they having to figure that out first?

He said what it is:  It is a pogo-pin.  http://en.wikipedia.org/wiki/Pogo_pin
He is asking about sourcing it.
Although one would need some Real World dimensions to do an accurate search.

[tsmith35]

Not exactly identical, but look up pogo pin masher. Round tip, but with knurling.

[mswhin63]

I have a 6 Pin IC came from a Charger circuit Sennheiser but would like to get the datasheet. Anyone recognise the number on the components plus the other marking. I believe it belongs to a particular manufacturer but never seen this type before.

Sorry about the quality of the image, but it it was difficult to get the number and so I had to enhance it to see more clearly.

Cheers

[tautech]

There are many hits for T1, can you identify the package?

[Richard Crowley]

Identifying the markings on tiny SMD packages requires more than just the mark and even the package.
It also requires the "context" of what is around it, the general historic era, what kind of circuit, etc. etc.
As tautech said, there are many different SMD parts, even in that package, marked "T1"

[maxinecoless]

I think ..it is a kind of IC( Integrated Circuits)

[mswhin63]

Identifying the markings on tiny SMD packages requires more than just the mark and even the package.
It also requires the "context" of what is around it, the general historic era, what kind of circuit, etc. etc.
As tautech said, there are many different SMD parts, even in that package, marked "T1"

As mentioned in the post it is from a Sennheiser charging cct. I cant elaborate further. I am not very experienced at identifying non common packages but to say it is extremely small. about 3mm x 1.5mm roughly.

I cant get a hold of the circuit, but I still have another board, I may consider reverse engineer it, just do have a lot of time at this stage. I will add to the forum later when I have the time.

[tautech]

Identifying the markings on tiny SMD packages requires more than just the mark and even the package.
It also requires the "context" of what is around it, the general historic era, what kind of circuit, etc. etc.
As tautech said, there are many different SMD parts, even in that package, marked "T1"

As mentioned in the post it is from a Sennheiser charging cct. I cant elaborate further. I am not very experienced at identifying non common packages but to say it is extremely small. about 3mm x 1.5mm roughly.

I cant get a hold of the circuit, but I still have another board, I may consider reverse engineer it, just do have a lot of time at this stage. I will add to the forum later when I have the time.

If you Google "smd package identification" and use Vernier calipers you'll have the answer.
Calipers are now "a must" for electronic work.

[Terabyte2007]

Sorting through a box of NOS parts I came across this. As far as I can tell it appears to be some sort of heating element or spark element possibly. Any help in correctly identifying this item would be greatly appreciated. It has about 95 Ohms across the two input terminals, no PN junctions detected so it's purely resistive. It also has on each end inside a pointed rather thick electrode of some sort.

[mswhin63]

Sorting through a box of NOS parts I came across this. As far as I can tell it appears to be some sort of heating element or spark element possibly. Any help in correctly identifying this item would be greatly appreciated. It has about 95 Ohms across the two input terminals, no PN junctions detected so it's purely resistive. It also has on each end inside a pointed rather thick electrode of some sort.

Could be a heating element to heat the fuel before arriving at the injection system, also has an inlet and outlet so it could also be a switch to disconnect the flow.
Can't imagine sparking the fuel before the cylinder.

Have you tried to connect the coil to 12V or lower to see what it does.

[elgonzo]

It looks like something related to low/high-pressure applications. Note on one end the large number of mounting holes and an indentation for what looks like an o-ring. The other end is just a flat surface with only four mounting holes. Could it be perhaps a part of something like a valve/emitter or fixture for some kind of measurement apparatus for a high/low-pressure chamber? (Not sure how the 95 Ohm would fit into that speculation, though...)

[SeanB]

Magnetic polariser, it would be attached between a scalar ring set and the LNB of an older C band ( or other band of interest) dish, to enable you to select the polarisation, selecting the polarisation by passing a constant current ( 35mA IIRC or in that ballpark) through it. Was used in the old days before they could make low loss RF switches in a LNB, but a low loss ferrite that would skew polarisation depending on the magnitude and direction of a current in the coil wound around it was easy to do. Date code suggests it was made in December 1997.

[Terabyte2007]

Magnetic polariser, it would be attached between a scalar ring set and the LNB of an older C band ( or other band of interest) dish, to enable you to select the polarisation, selecting the polarisation by passing a constant current ( 35mA IIRC or in that ballpark) through it. Was used in the old days before they could make low loss RF switches in a LNB, but a low loss ferrite that would skew polarisation depending on the magnitude and direction of a current in the coil wound around it was easy to do. Date code suggests it was made in December 1997.

Awesome! Thanks Sean...

[mswhin63]

Sorting through a box of NOS parts I came across this. As far as I can tell it appears to be some sort of heating element or spark element possibly. Any help in correctly identifying this item would be greatly appreciated. It has about 95 Ohms across the two input terminals, no PN junctions detected so it's purely resistive. It also has on each end inside a pointed rather thick electrode of some sort.

Do you want to clarify NOS acronym for us. I haven't used many waveguide so I think there is a bit of a misunderstanding. It does though resemble a waveguide but it also represents a pressure manifold of a Nitrious Oxide System albeit a large one.

[tautech]

Sorting through a box of NOS parts I came across this. As far as I can tell it appears to be some sort of heating element or spark element possibly. Any help in correctly identifying this item would be greatly appreciated. It has about 95 Ohms across the two input terminals, no PN junctions detected so it's purely resistive. It also has on each end inside a pointed rather thick electrode of some sort.

Do you want to clarify NOS acronym for us. I haven't used many waveguide so I think there is a bit of a misunderstanding. It does though resemble a waveguide but it also represents a pressure manifold of a Nitrious Oxide System albeit a large one.

Outside the Automotive high performance industry NOS is invaribly taken to mean "New, Old Stock"

[mswhin63]

OK, thanks for the clarification  .

[Terabyte2007]

Part of the recently acquired NOS (New Old Stock) parts I gained a few crystal oscillators, good to have around! There is one in particular that I am interested in finding the datasheet for but can't seem to locate one. It's a Corning MC937X5-002W 155.520000 MHz oscillator which I am very interested getting some info on. I have attached some pics. Any help would again be greatly appreciated.

[electr_peter]

Component has markings "407J(M? symbol)41". It measures open circuit, has no significant capacitance. It is rectangular shaped and very thin, only 2-3mm.

It was used near a heated components. I guess it is a thermal switch, NO and closing at determined temperature. If the heater catches on fire, device will close, short out the supply, blow the fuse in a power supply and prevent power from reaching fire.

However, I could not confirm my guess after looking through thermal switch catalogues. Thermally operated switches usually use bimetallic strips which are much larger in size.

Any ideas?

[Richard Crowley]

It could be a failed (open) RTC or thermistor(?)
Assuming that the scale in your photo is cm.