Fet Transistor
Todays deals on Fet Transistor?
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2000 FET P-Channel Silicon Transistor 2SJ103 BL Audio amplifier Toshiba ( 2SJ74 $788.00 |
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12000 x 2N7000 SILICONIX N-channel enhancement mode FET NEW $707.96 |
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2000pc FET N-Channel Silicon Transistor 2SK246 BL Audio amplifier Toshiba $542.00 |
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10,MRF5015 N-CHANNEL BROADBAND RF POWER FET BY MOTOROLA $440.00 |
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1000 FET P-Channel Silicon Transistor 2SJ103 BL Audio amplifier Toshiba ( 2SJ74 $408.20 |
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NEC NE900275 MICROWAVE POWER FET SMD MOUNT HARD T FIND $399.00 |
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1000pc FET N-Channel Silicon Transistor 2SK246 BL Audio amplifier Toshiba $280.00 |
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FDV304P Digital FET, P-Channel Fairchild – partial reel +/- 2,736 pcs. $249.00 |
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5,MRF5015 N-CHANNEL BROADBAND RF POWER FET BY MOTOROLA $230.00 |
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TNM1800-7 TOSHIBA MICROWAVE POWER GaAs FET Gold $199.95 |
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TIM1213-8 TOSHIBA MICROWAVE POWER GaAs FET Gold $199.95 |
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TIM7785-14L TOSHIBA MICROWAVE POWER GaAs FET Gold $199.95 |
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TIM5053-8 TOSHIBA MICROWAVE POWER GaAs FET Gold $199.95 |
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Sencore Portable Super Cricket TF46 Transistor and FET Tester $199.99 |
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2SJ313 TOSHIBA Audio Power Amplifier MOS-FET,J313, x50 $198.00 |
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2SK2013 TOSHIBA Audio Power Amplifier MOS-FET, x50 $198.00 |
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IRLMS6702TR IR HEX POWER FET T/R 2297pcs MICRO6 $169.99 |
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100pc N Channel MOS FET Transistor 2SK4111 K4111 NEW $160.00 |
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100pc N Channel MOS FET Transistor 2SK4111 K4111 NEW $160.00 |
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20PCS,Original 2SJ201 & 2SK1530 Audio Amplifier MOS-FET $158.00 |
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100pc N Channel MOS FET Transistor 2SK4110 K4110 NEW $148.00 |
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100pc N Channel MOS FET Transistor 2SK4110 K4110 NEW $148.00 |
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50pc N Channel MOS FET Transistor 2SK2717 K2717 NEW $133.99 |
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50pc N Channel MOS FET Transistor 2SK2717 K2717 NEW $133.99 |
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50pcs N Channel MOS FET Transistor 2SK1512 K1512 TO-247 $115.40 |
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50 pcs N Channel Power MOS FET Transistor 2SK2082 K2082 $110.00 |
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NIB USA NEW Hickok 215 In Circuit Transistor FET UJT Zener Diode Tester Analyzer $114.50 |
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SENCORE TF-46 SUPER CRICKET TRANSISTOR & FET TESTER – IN / OUT CKT $125.00 |
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50 pcs N Channel MOS FET Transistor 2SK1940 K1940 TO-3P $107.20 |
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Power FET Amplifier + Nova Circulator 0250CAD +VPH5 PCB $120.00 |
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FET Amplifier MFR6S27085H + Nova Circulator 0250CAD $120.00 |
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Deluxe TO-92 FET Transistor Kit #1 (#3750) $119.50 |
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50 pcs N Channel MOS FET Transistor 2SK2642 K2642 $96.20 |
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Sencore TF46 Super Cricket Transistor/FET Parameter Tester,Perfect $99.00 |
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50pcs 2SJ74-BL J74 2SJ74 2SJ74BL FET N-Ch Low Noise J-FET, NOS Transistor $109.00 |
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50pcs 2SJ74-BL J74 2SJ74 2SJ74BL FET N-Ch Low Noise J-FET, NOS Transistor $109.00 |
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50pcs 2SJ74-BL J74 2SJ74 2SJ74BL FET N-Ch Low Noise J-FET, NOS Transistor $109.00 |
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50pcs 2SJ74-BL J74 2SJ74 2SJ74BL FET N-Ch Low Noise J-FET, NOS Transistor $109.00 |
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10x Power Amplifier FET GaAs 18 GHz 22.5dBm Transistor $99.99 |
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11x Power Amplifier FET GaAs 18 GHz 22dBm Transistor $99.99 |
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50pcs N Channel MOS FET Transistor 2SK2049 K2049 TO-220 $90.70 |
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50 pcs N Channel Power MOS FET Transistor 2SK904 K904 $90.65 |
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50 pcs N Channel Power MOS FET Transistor 2SK2850 K2850 Fuji $90.65 |
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50 pcs N Channel Power MOS FET Transistor 2SK3296 K3296 $90.65 |
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TIM5964-16SL Manu:TOSHIBA Encapsulation:RF TRANSISTOR,MICROWAVE POWER GaAs FET $100.00 |
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TIM5964-16SL TOSHIBA Encapsulation ，RF TRANSISTOR,MICROWAVE POWER GaAs FET $103.99 |
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FET, 2SK3045 MOSFET N-CH 500V 2.5A TO-220D x 100 $100.00 |
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200pc FET P-Channel Silicon Transistor 2SJ103 BL Audio amplifier Toshiba ( 2SJ74 $84.70 |
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2SK170-BL Original TOSHIBA Audio FET,K170,2SK170BL,x100 $99.00 |
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100pcs 2SK170-BL K170 2SK170 2SK1?70BL FET N-Ch Transistor N Channel QUAD $98.85 |
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100pcs 2SK170-BL K170 2SK170 2SK170BL FET N-Ch Transistor N Channel QUAD $98.85 |
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100pcs 2SK170-BL K170 2SK170 2SK1?70BL FET N-Ch Transistor N Channel QUAD $98.85 |
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50 pcs N Channel Power MOS FET Transistor 2SK1221 K1221 $82.50 |
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IT-3120 Vintage HEATHKIT Transistor FET DIODE Tester IT3120 $79.00 |
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BK B+K Precision Model 520B Industrial Transistor FET SCR Diode Tester $89.99 |
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2,MRF5015 N-CHANNEL BROADBAND RF POWER FET BY MOTOROLA $89.00 |
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2N7000 N-Channel Switching MOS-FET, MOSFET, x 1000 PCS $89.00 |
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50pc N Channel MOS FET Transistor 2SK4111 K4111 NEW $88.00 |
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50pc N Channel MOS FET Transistor 2SK4110 K4110 NEW $88.00 |
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50pc N Channel MOS FET Transistor 2SK4110 K4110 NEW $88.00 |
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50pc N Channel MOS FET Transistor 2SK4110 K4110 NEW $88.00 |
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50pc N Channel MOS FET Transistor 2SK4111 K4111 NEW $88.00 |
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50 pcs N Channel MOS FET Transistor 2SK4111 K4111 $71.50 |
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sencore super cricket tf46 transistor and fet tester meter $76.00 |
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50 pcs N Channel MOS FET Transistor 2SK2843 K2843 $68.70 |
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10PCS,Original 2SJ201 & 2SK1530 Audio Amplifier MOS-FET $79.99 |
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2SJ200 & 2SK1529 Original TOSHIBA FET J200 K1529 , x 10 $77.00 |
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2SJ201 & 2SK1530 TOSHIBA HP Audio Amplifier MOS-FET,x10 $76.99 |
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TOSHIBA 2SJ201 2SK1530 Audio Amplifier MOS FET-5 Sets $74.00 |
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50pc N Channel MOS FET Transistor 2SK3565 K3565 Toshiba $66.50 |
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50 pcs N Channel MOS FET Transistor 2SK415 K415 TO-3P $57.70 |
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2SK117-BL TOSHIBA Low Noise Audio Amplifier J-FET, x200 $69.00 |
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2SK1413 N-channel MOS silicon FET LOT OF 10 $69.00 |
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2SK1190 N-FET 60V 22A 35W BY SANKEN LOT OF 10 $69.00 |
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10PCS LH0032CG / LH0032 Ultra Fast FET Operational Amplifier (A281) $68.00 |
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SILICONIX V11553 POWER FET STUD HARD TO FIND NEW $59.90 |
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2SJ103GR Original TOSHIBA FET,P-CH,J103,2SJ103-GR,x 200 $67.00 |
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RF Power Amplifier FET GaAs 14 GHz 32dBm Transistor $60.00 |
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JANTXV2N6782 Mil-Spec N-Channel FET Transistor 2N6782 $57.94 |
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200 FET N-Channel Silicon Transistor 2SK246 BL Toshiba $58.20 |
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50 pcs N Channel MOS FET Transistor 2SK513 K513 $55.00 |
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50 pcs N Channel MOS FET Transistor 2SK791 K791 $55.00 |
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50pcs N Channel MOS FET Transistor 2SK1117 K1117 TO-220 $55.00 |
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50pcs N Channel Power MOS FET Transistor 2SK2134 K2134 $55.00 |
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Digital Transistor DC Parameter Tester Meter For Crystal Diode Audion SCR FET $62.09 |
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2SK246-BL TOSHIBA Audio Amplifier J-FET, K246, x200 $62.00 |
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2SJ103-BL TOSHIBA Audio Amplifier J-FET, J103, x200 $62.00 |
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2SK246GR Original TOSHIBA FET N-CH,K246,2SK246-GR,x 200 $62.00 |
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Digital Transistor DC Parameter Tester Meter For Crystal Diode Audion SCR FET $61.63 |
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Digital Transistor DC Parameter Tester Meter For Crystal Diode Audion SCR FET $61.53 |
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50pcs 2SK170-BL K170 2SK170 2SK1?70BL FET N-Ch Transistor N Channel QUAD $59.00 |
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200x J111 Fairchild N-Channel Switch FET, Transistor. $59.00 |
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50pcs 2SK170-BL K170 2SK170 2SK170BL FET N-Ch Transistor N Channel QUAD $59.00 |
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50pcs 2SK170-BL K170 2SK170 2SK1?70BL FET N-Ch Transistor N Channel QUAD $59.00 |
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50pcs 2SK170-BL K170 2SK170 2SK1?70BL FET N-Ch Transistor N Channel QUAD $59.00 |
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200pcs 2SJ103-BL ORIGINAL TOSHIBA Audio Amplifier J-FET 2SJ103 J103 TO-92 $58.90 |
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200pcs 2SK246-BL ORIGINAL TOSHIBA Audio Amplifier J-FET 2SK246 K246 TO-92 $58.90 |
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2SK30A-Y Original TOSHIBA N-Ch FET,2SK30 K30 K30A, x200 $58.00 |
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2SK30A-GR Original TOSHIBA N-Ch FET,2SK30 K30 K30A,x200 $58.00 |
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Toshiba TIM6472-6UL Microwave Power GaAs FET $49.99 |
Fet Transistor Questions
The Importance Of Current Sense Resistor In Switch Mode Power Supply
Current sense resistor is usually located in the switch mode power
supply section. Newer version of monitor-the b+ (boost) circuit
also have this current sense resistor. If you repair electronic
equipment especially the switch mode power supplies, the current
sensing resistor is connected to the source pin of power FET (field
effect transistor) and the other end to HOT GROUND. The value of
current sense resistor is in the range of 0.1 ohm to about 1 ohm.
The values are depends on the design of each power supply.
In monitor power supply where pulse width modulation (pwm) ic UC3842
are used. Pin 3 of this power ic is called I-sense which means
current sense and this pin is connected to source pin of POWER FET.
The purpose of this current sense circuit is for overcurrent protection.
This circuit usually samples the voltage drop across a resistor in series
with the switching fet transistor. If the current rises abnormally due to
some short circuit in the secondary side such as a shorted secondary diode
or horizontal output transistor (HOT), the voltage will exceed a reference
level and shutdown the pulse generator which is the PWM ic. This circuit
provides protection to components in the event a problem occurs.
In some cases where overload happen-the power section will blow and
most of the time the components changed are fuse, power fet, pwm ic,
zener diode and current sense resistor.
Do you know that a small change in this current sense resistor value
have a great impact on the secondary output? A little change in value
say from 0.22 ohm to 0.44 ohm can caused your ouput voltage to drop
into half! I have seen a lot of repairer can’t detect this type of
problem (low output voltage) due to that they used analog or digital
meter that don’t have the low ohms range. You can’t differentiate
if the low ohms resistor has its value changed by using normal meters.
I personally use the Dick Smith ESR Meter which have the capabilities
to check resistor value down to 0.01 ohm! If you don’t have this
special meter you may just direct replace the current sense resistor
to see if the generated secondary output will back to normal voltage.
Another tip is that if the current sense resistor in the monitor
B+ circuit have changed value it will caused the output in the
boost circuit to become low and you will have a small width display
and of course the high voltage will become low as well. Instead of
24Kv it becomes 15-18Kv.
About the Author
Check out the two links below. You will be pleasantly surprised to find out that LCD and Electronic Repairs are so Easy and Highly Profitable for even a novice. You can learn the repairing secrets easily.
Find out How to Repair Any LCD Monitor – It is a breeze!
Learn the Secrets of Testing Electronic Components.
Fet Transistor Videos
Field Effect Transistors, Part 1
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