Npn planar transistor designed primarily for land mobile transmitter. Smps vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to all channels of distribution while maintaining a profitable return for all. Mouser is an authorized distributor for many transistor manufacturers including diodes inc. Cross reference universal transistor reference page 1. Choosing transistor replacements electronics notes. Smallsignal device smallsignal transistor generaluse low. It is necessary to ensure that the replacement transistor will be able to operate at the relevant frequencies, so a similar or slightly higher ft is advisable. Replacing the mrf with an sd is not really such a big deal, so long as they are a matched pair. Mrf 455 replacemtn with sd 1446 post by wa10 14 sep 2010.
Protective treatment updates tsi guidance electrical continuity. The dei 2sc2879 silicon npn radio frequency power transistor is primarily designed for 2 30 mhz ssb linear power amplifier applications. The sds also have nearly the same specs as the mrfs so long as they are a matched pair. Sd1446 transistor datasheet pdf, sd1446 equivalent. Discrete semiconductors data sheet book, halfpage m3d186 ed1802 pnp general purpose transistor 1999 apr 27 product specification supersedes data of 1997 may 27 philips semiconductors product specification pnp general purpose transistor ed1802 features pinning low current max. Sd1446 rf bipolar transistors are available at mouser electronics. They are not as forgiving as as their original counterparts.
A wide variety of sd1446 transistor options are available to you. Classification of dangerous goods internet archive. This software is freeware and may be used commercially and privately for free. Web and mobile experts transistor software provides premium web and mobile engineering, architecture and training to companies all over the world.
Also they can dissipate more heat, even though they run hotter than 1446s. Dei 2sc2879 100w silicon npn rf power transistor 230 mhz. These were made by etching depressions into an ntype germanium base from both sides with jets of indiumiii sulfate until it was a few tenthousandths of an inch thick. If that is the case and ill leave it you to check i would part with the pair for. Download transistoramp software for the design of transistor. At the maximum voltage, also called a breakdown voltage bv, electrons. No amount shall be required to be deducted and withheld under section 1446 of the 1986 code as in effect before the amendment made by.
Two transistor sd1446 amplifier 100w bird rms ebay. Although the software seems a bit ugly design running on dos, but it works perfectly with the database with many components and is free, makes an interesting tool to interested in electronics, want to know when information about a particular component or find a replacement. Sd1446 rf power bipolar transistors uhf mobile applications features summary 50 mhz, sd1446 is a 12. Sd1446 datasheet, equivalent, cross reference search. Pc max ucb max uce max ueb max ic max ft max cctip pf hfe tj euro equivalent, usa equivalent, ussr equivalent, japan equivalent. Sd1446 stmicroelectronics discrete semiconductor products. Pin connection branding sd1446 order code sd1446 absolute maximum ratings tcase. Here is a very nice amplifier that can be used for a driver for a 6 through a 12 pill. If you install the wrong polarity, the sandwich wont work. Sd1446 rf transistor npn 18v 12a 183w surface mount m1 from stmicroelectronics. Rf and microwave transistors vhfuhf applications sd 1463 sd1468. Theses sd transistors cover a full range of hf, vhf, uhf avionics and microwave. If more than a maximum voltage rating is applied to a transistor, it can be permanently damaged. The amendments made by this paragraph amending sections 1446 and 6401 of this title shall apply to taxable years beginning after december 31, 1987.
Bipolar transistors database contain more than 46000 transistor data npn and pnp transistors. Well help you to work out whether its worth paying extra for a highend version or whether youre getting just as good a deal by getting the cheaper item. This device utilizes emitter ballasting and is extremely stable and capable of withstanding high vswr under rated operating conditions. Hg rf power transistor sd1446 semiconductors hg rohs compliance,silicon npn power. Aug 25, 2011 crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable. Those are 70 watts a piece 140 pa, he said it was good at 90 pep.
Sd1127 microsemi corporation discrete semiconductor. Product specifications for sd1407 rf power transistor. That means whatever drive you give it, the transistor will try and make 10 times that as output. The sd1446 is rated for 70 watts pep output power at 12. Sd1127 rf transistor npn 18v 640ma 175mhz 8w through hole to39 from microsemi corporation. Just a work of caution, many of the transistor equivalent documents and software packages have shortcomings and i am afraid to say that in many cases they have proved to be wrong. So called equivalent parts, or nte replacements, may not work at all in some cases, because they were worse in some spec, or the circuit was designed with the assumptions that the part had a fairly low bandwidth. At the cb 11 meter freqs of 27 mhz most rate it at 90 watts.
They then sold me to sd 1074s as a matched pair and said they were equivalent to the 1446. For it to be over 200 watts output with 2 watts drive means the stage would have to have 10 times the gain it actually does or the more likely possibility is its self oscillating. Stmicroelectronics, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Sd1446 transistor, 12v, 70 watt, rfp hg huagao the sd1446rfp is a 12. Select a replacement transistor with equivalent ft. Sd338 datasheet, equivalent, cross reference search. Australianew zealand 712d west asiamiddle east 712d. Also, his has sd1446 transistors, mine has mrf455, do you think that.
No amount shall be required to be deducted and withheld under section 1446 of the 1986 code as in effect before the amendment made by subparagraph a. Is there any chance to replacerebuild it with irf 520 or similar fet. Pricing and availability on millions of electronic components from digikey. This device utilizes emitter ballasting and is extremely stable and capable of withstanding high vswr under operating conditions. Datasheet for motorola mc1723g used as regulator on helges. Year 1446 was a common year starting on saturday link will display the full calendar of the julian calendar.
The first highfrequency transistor was the surfacebarrier germanium transistor developed by philco in 1953, capable of operating up to 60 mhz. See all formats and editions hide other formats and editions. Mrf 477 replacement with irf 520 the defpom forum, for. Dont go for a transistor with a much higher ft as this may increase the risk of oscillation. For sd1446 price, delivery, and datasheet, see the part table below. Silicon npn triple diffused mesa type, 2sd1428 datasheet, 2sd1428 circuit, 2sd1428 data sheet. Technical inquiry request for sd1407 rf power transistor.
Can someone explain why anyone would use a sd1446 instead of. Pricing and availability on millions of electronic components from digikey electronics. Toshiba, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. However, it is important to note that the 70 watts output advertised is based upon the 50 mhz of the only data sheet provided. The dei sd1446 silicon nan radio frequency power transistor is primarily designed for 50 mhz class c power amplifier and land mobile transmitter applications. Two transistor sd1446 amplifier 100w bird rms ebay youtube. The 2sc2879 is rated for 100 watts pep output power at 12. So unless the transistor you use have matched bias, you will need to replaced both of them. Apr 28, 2014 download bipolar transistors database for free.
Nov 25, 2017 the amp tom test is simular to the kl7405 only it used 2 sd 1446 transistors for pa. Sd1288 nte equivalent nte336 transistor npn silico. Buy sd1446 rf transistor and get free shipping on aliexpress. Base q c silicon npn planar transistor designed primarily 4. Sd1451 nte equivalent nte318 npn rf output transis. This device utilizes diffused emitter resistors to withstand. The dei 2sc2879 is designed to be equivalent to other brands of 2sc2879 transistors.
Sd1407 sd transistors from p1db rf power transistor, hf, 125 w, 28 v. Transistor npn silicon 36v ic6a po50w cb and rf power output. Npn planar transistor designed primarily for land mobile transmitter applications. Transistors special purpose discrete semiconductor.
The dei sd1446 is designed to be equivalent to other brands of sd1446 transistors. Zetagi b300p in need of new transistors, owner admits to over driving the amp which destroyed the sd1446 original devices. Bulk metal foil technology, dualinline hermetic resistor networks. Hi, this pre rogerbird mod works well uses sd 1446. Transistors are in stock with sameday shipping at mouser electronics from industry leading manufacturers. Hg rf power transistor sd1446 semiconductors hg rohs compliance,silicon npn power transistor d description 1. For details about parts other than sd1446 click on the desired part number in the parts list at the bottom of this page. A substitute transistor must have the same polarity, either pnp or npn, as the original. With the 2 watt carrier the amp should only be keying about 20 watts. Savantic semiconductor product specification silicon npn power transistors 2sc1402 description with to3 package wide area of safe operation applications for audio frequency power amplifier applications pinningsee fig. World transistor equivalents data az by eca author 4. Sd1446 stmicroelectronics 4975458nd digikey electronics. Located in montreal, canada, transistor software has been working with webtechnology since 1998.