Check for Samples: LM, LMN, LMA. In addition to higher −40°C ≤ TJ ≤ +°C, and the LM is rated for 0°C handled. ≤ TJ ≤ +°C. The LM is an adjustable 3-terminal positive voltage . FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE. I have a current regulated supply (fed by a 24V power supply) that used to have a Fairchild LM in it. This supply has a set of switches that let.

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Doug, Could oscillations lead to the part failing? Seller information cayin35 Those are metal film resistors.

Fairchild LM dies, takes other parts with it I did some bypass surgery on the dead luxeon: Fairchild LM dies, takes other parts with it I have a PS LMs instead of the and I have found them to be fairly bullet proof with respect to thermal overload. Please fairchipd me before you return it. How does this fit with the topic?

That’s the one that took 48W for a few seconds – it was glowing and smoking! Buy it now – Add to Watch list Added to your Watch fairchilf. My config has two regulators that are daisy chained CC configured regulator feeds the voltage regulated side – it’s not very efficient and has a limited range but it’s fairly inexpensive and does what I want it to.

I’m surprised at the fairchidl of sizes of your 1 watt resistors. Before you bid item, please clear you have noticed below details: This would cause very high current spikes through a load like a Luxeon. United States working days: See all condition definitions – opens in a new window or tab The resistor on the right is an 0.


Feedback on cayin35 from others who bought this item. Add to Watch list Watching Watch list is full. Perhaps you can post the circuit so we can take a critical look. Resume making your offer if the page doesn’t update immediately.

I always assumed that ‘the big guy’ could really honk on the input line and stray inductance would get it in trouble without the cap This I’ve seen a fair bit on LMs in a product I supported many years ago. Fairchild LM dies, takes other parts with it I have a current regulated supply fed by a 24V power supply that used to have a Fairchild LM in it. Please enter a number less than or equal to This amount is subject to change until you make payment.

The and it’s ilk are floating regulators that are not supposed to care about the actual voltage as long as a differential from input to output is less than 40V. Postage cost can’t be calculated.

Your support will keep us moving forward forever. As a suggestion, put a resistor from out to adj so fairchilv open contact in the switch can’t cause it to wind ‘full blast’.

LM Datasheet(PDF) – Fairchild Semiconductor

Redeem your points Conditions for uk nectar points – opens in a new window or tab. Skip to main content.

Not a complete recovery, so this luxeon will be used for testing. It has a 2″x2″x1″ heat sink with a 60mm fan blowing on it. Report item – opens lk350 a new window or tab. Those little ones must get extra hot when dissipating 1 watt.


The time now is Thread Tools Show Printable Version.


Read more about the condition. Since the acrylic cap would no longer fit, I re-sealed it with some normal clear epoxy. For some reason, after a computer restart I can now see your schematic.

If the pot wiper contact is dirty it could cause it to open intermittently fairchid it’s being adjusted. Fairchild LM dies, takes other parts with it The big resistors on the left look like metal oxide to me.

If the regulator is only a few inches from its “power supply” a separate capacitor isn’t needed. Make offer – Loading Fairchild LM dies, takes other parts with it Hi again, Hey ya know, now that i think about it You’re covered by the eBay Money Back Guarantee if you receive an item that is not as described in the listing.

This doesnt explain why the LM device failed however. Most purchases from business sellers are protected by the Consumer Contract Regulations which give you the right to cancel the purchase within 14 days after the day you receive the item.

Datasheet «LM350»

Fairchild LM dies, takes other parts with it Doug, Thanks for the suggestion. A brand-new, unused, unopened and undamaged item in original retail packaging where packaging is applicable.

The downstream circuitry has storage caps that are still sitting at zero volts.