HAFLER DH220 HITACHI 2SJ49 2SK134 T0-3 MOSFETS (8 pcs)
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Sold Date: 08/24/2009
Channel: Online Auction
COMPLETE HAFLER "DH200/220 MAKEOVER" MOSFET SET -- 4 PAIRS!
BRAND NEW ORIGINAL HAFLER / HITACHI PARTS.**LIMITED-TIME SALE PRICING!** HITACHI 2SJ49 2SK134 T0-3 MOSFETS (4 pairs/8 pcs) 2SK134 140V 7.0A T0-3 "N" & 2SJ49 140V 7.0A TO-3 "P" MOSFET HITACHI HAFLER
ORIGINAL HITACHI LATERAL N-CHANNEL and P-CHANNEL TO-3 MOSFETS AS USED IN MEDIUM POWER 200-SERIES (8 MOSFET) HAFLER AMPS. From original 1994 Hafler parts inventory!Hafler 2SK134 N-channel part numbers: SSH-620 and QN112 Hafler 2SJ49 P-channel part numbers: SSH-621 and QP112 ONE OF OUR MOST POPULAR PACKAGE DEALS EVER... RETURNS FOR AN ENCORE! RARE Hafler (Hitachi) Power Output MOSFETs... BACK IN STOCK! Less than $10 each on this package SPECIAL! An especially popular Hafler parts category has always been the 1980s-1990s Hitachi -manufactured power output MOSFETs used in Hafler's famous line of amplifiers -- as well as in amplifiers from Tandberg, Perreaux, Hitachi, MOSCODE and Soundcraftsmen . Popular devices... but also now long out-of-production and very difficult to locate at anything resembling a sane price.A quick search online will reveal that my prices are a full 50-75% lower than the pricing from others still offering these original Hitachi parts. And each device I sell is tested and MATCHED on an original Hafler DH-919 MOSFET Tester-Checker.Note: Devices marked with the same lot code sometimes implies similar performance... but not always so. That's why I test and match each device before shipment. The N-channel devices are matched to themselves; the P-channel devices to themselves. Matching the N's to the P's is not electrically required -- nor is it something Hafler ever did. (Looking at a sample Hafler-built Pro5000 board I have before me, the "P" mosfets are gate-rated "2" and the "N" mosfets are gate-rated "4." In any case, gate number matching the N and P devices is not possible given the quantities of devices available to me. A personal tale of woe regarding modern "replacement" MOSFETs. Your Hafler amplifier circuits were specifically designed around the electrical characteristics of the Hitachi-produced MOSFETs -- not Exicon. In our experience with hundreds of Hafler amplifiers, the use of "Exicon" branded substitute parts resulted in parasitic oscillations, higher distortion readings, and a myriad of circuit instabilities. This is not to say that Exicon parts are "defective" -- only that they are just different enough from the original Hitachi parts to cause some real headaches in Hafler circuits. We finally had to quit using Exicon because t appeared to be no circuit "band-aid" that could be universally applied to every unit. The .1uf capacitors that might arrest circuit oscillations in one DH500 did not arrest them in the next. To eliminate any doubt as to the source of these circuit ills, we could pull the Exicon devices out and replace them with original Hitachi, changing nothing else in the circuit, and the amplifier being tested would immediately become electrically stable. It would have been GREAT if the Exicon parts had worked for us. But they didn't. So we had to sell off our inventory of Exicon and return to using Hitachi only . T will come a day when these authentic Hitachi high-power MOSFETs are no longer availale from me. But that day is clearly not now! So why buy "replacement" devices when the original spec parts are still available... for only a bit more cost than the substitute parts? Spare yourself the frustration, expense, and aggravation I went through of trying to "make" an inexact aftermarket part work in your Hafler circuit.SAVE! Combine multiple auction lots into ONE Paypal payment -- pay only ONE shipping charge. International Buyers – Please Note: OVERSEAS BIDDERS WELCOMED! Take advantage of the opportunity to combine several different small parts orders (up to 4-lbs total)... and pay only ONE $12.95 USPS Priority Mail International Flat Rate Envelope fee -- a true shipping BARGAIN in today's world! Just pa...
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