Though both are just normal diodes, they are meant for totally different purposes. Pricing and availability on millions of electronic components from digikey electronics. Fairchild, alldatasheet, datasheet, datasheet search site for electronic components and. The 1n4148 is a standard silicon switching signal diode. For 1n4007 diode, the maximum current carrying capacity is 1a it withstand peaks up to 30a. The 1n4148 replaced the 1n914, which had a much higher leakage current 5 microamps vs. General purpose plastic rectifier 1n4001 thru 1n4007 vishay general semiconductor features low forward voltage drop low leakage current high forward surge capability solder dip 275 c max. A 1n4002 is a general purpose rectifier diode good for 1a and 100v reverse. General purpose plastic rectifier vishay intertechnology.
General purpose, industrial, military and space applications. It is one of the most popular and longlived switching diodes because of its dependable specifications and low cost. Marking type number marking code 1n4148 1n4148ph or 4148ph 1n4448 1n4448 fig. The 1n34a is a point contact diode in a do7 type package employing n. When constructing a rectifier, it is important to choose the correct diode for the job. Jul 09, 20 you can use 1n4002 in place of the 1n4148 s if you wish. This will give us stable reference voltage as the supply voltage is already regulated with lm317.
Complete technical details can be found at the 1n4148 datasheet given at the end of this page. Apr 01, 20 i recently looked at a commercially available circuit that uses a 555 to operate a 12v relay. Is a 1n4148 suitable, and what specifications does a diode need for this. Macom and its affiliates reserve the right to make changes to the products or information contained herein without notice. Fill partno and click search button, well show you all available parts for replacement. Jun 17, 2010 ordinary silicon rectifier diodes drop somewhere between 0. Color band denotes cathode end high temperature soldering guaranteed. The cathode terminal can be identified by using a grey bar as shown in the picture above. Complete technical details can be found at the 1n4001 datasheet given at the end of this page.
Uxcell 25 x 1n4001 molded plastic case rectifier diodes, 1a, 50v. Is a 1n4148 suitable, and what specifications does a. Philips highspeed diodes,alldatasheet, datasheet, datasheet search site for electronic. To manufacturers of electronic wotsits, it makes sense to use the 1n4001 in lowvoltage applications because they probably save a few dollars per thousand units compared with 1n4004. If you are trying to waste the extra voltage to drop 12v to 7. Apr 21, 2014 should be a good substitute for your circuit. I recently looked at a commercially available circuit that uses a 555 to operate a 12v relay. Absolute maximum ratings stress ratings, consult datasheet for recommended ratings. A 1n4003 is the same thing, only its good for 200v reverse. Hermetically sealed glass with a stud on either side of the glass passivated chip provides excellent stability. Midway electronics is doing everything it can to keep the kit prices back at the original 1998 prices small wonder labs had.
Archived pdf from the original on 23 february 2018. A diode is a device which allows current flow through only one direction. That is the current should always flow from the anode to cathode. So for most applications you could use the 4004 over a 4148 but there are circuits that might utilize the higher speed, lower junction capactance of the 4148 that would not operate or as well as with the 4148. After some googling i found all i need is a parallel port plug and some 1n4148 diodes. Depending on a lot of different variables, the back emf from this type of relay can briefly reach several hundred volts. But i live in a small town in the mountains and is not easy for me to get new components, i was wondering if the 1n4007 diodes i have could replace the 1n4148.
The circuit included a 1n4148 across the coil of the relay, but i have always used a 1n4001. Cathode band mark package code 1n4148 black h48 do35 outline. Diotec 1n4148 silicon diode 150ma 75v do35 rapid online. Ive ran into a lot of 1n4001 diodes while doing shop jobs on pins. Nteecg generally substitute one part for a family of parts, thus a 1n4001 and a 1n4005 will sub to the 1n4005 with no problems. Fast switching speed general purpose rectification.
Ul flammability classification rating 94v0 moisture sensitivity. Diotec 1n4148 diotec 1n4148 silicon diode 150ma 75v do35 a 1n4148 signal diode manufactured by diotec that features ultrafast switching javascript is currently disabled in your browser, please turn it on to avoid loss of functionality. The 1n4148 is a high speed signal diode rated at 100volt 200ma. Sep 27, 2007 the 1n4148 is a high speed signal diode rated at 100volt 200ma. The 1n4148 is useful in switching applications up to about 100 mhz with a reverserecovery time of no more than 4 ns. Silicon epitaxial planar diode for various detector. Diode crossreference guide continued 1n970a 1n970b 1n971 1n971a 1n971b 1n972 1n972a 1n972b 1n973 1n973a 1n973b 1n97a 1n98 1n98a 1n99 1n993 1n994 1n995. Since these diodes only allow electrical current to flow in one direction, they are used to convert ac power into dc power. I replaced unnecessary complicated circuit for voltage reference build with ic2 with simple resistorzener circuit.
Symbol 1n4001 1n4002 1n4003 1n4004 1n4005 1n4006 1n4007 unit. The 1n400x or 1n4001 or 1n4000 series is a family of popular 1 a generalpurpose silicon rectifier diodes commonly used in ac adapters for common household appliances. Valid provided that device terminals are kept at ambient temperature. The 1n4148 and 1n4448 are highspeed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass sod27 do35 packages.
In doing so we have to shop around for the best component prices without suffering quality. Its blocking voltage varies from 50 volts 1n4001 to volts 1n4007. Small signal diode, 1n4148 datasheet, 1n4148 circuit, 1n4148 data sheet. To your average component retailer, it makes no sense to carry 4001s when 4004s will quite happily substitute for them. Meet all present and future national and international statutory requirements. Since leakage is almost never a desirable property, manufacturers today produce the 1n4148 and sell it as either part number. Glass and high temperature solder exemptions applied where applicable. The 1n4148 is a switching diode with a voltage of 100v and a current of 150ma.