Top 10 Best Testers with Diode
for October 2021

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1
9.8
SCORE
LCR-T4 Mega328 Digital Transistor Tester Resistance Capacitance Diode Triode Capacitance Resistance ESR Meter MOS PNP NPN LCR with Case

AITRIP LCR-T4 Mega328 Digital Transistor Tester Resistance Capacitance Diode Triode Capacitance Resistance ESR Meter MOS PNP NPN LCR with Case

by AiTrip
What We like

Can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage.

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Product Features

  • 128*64 big Backlight LCD display,only 2mA when stand by.
  • High test speed, valid component test: 2 seconds (except in the larger capacitor of large capacitance measurement also takes a long time, the measured time of one minute is normal)
  • Test ranges:Inductors, capacitors , diodes, dual diode , mos, transistor, SCR , the regulator, LED tube, ESR, Resistance, Adjustable potentiometer
  • Auto power off function to avoid unnecessary waste, saving battery power, improved battery life

High test speed, valid component test: 2 seconds (except in the larger capacitor of large capacitance measurement also takes a long time, the measured time of one minute is normal) Test ranges:inductors, capacitors , diodes, dual diode , mos, transistor, scr , the regulator, led tube, esr, resistance, adjustable potentiometer 128*64 big backlight lcd display,only 2ma when stand by. Auto power off function to avoid unnecessary waste, saving battery power, improved battery life

2
9.6
SCORE
Neoteck Auto Ranging Digital Multimeter AC/DC Voltage Current Ohm Capacitance Frequency Diode Transistor Audible Continuity, Multi Tester with Backlit LCD- Red

Neoteck Auto Ranging Digital Multimeter AC/DC Voltage Current Ohm Capacitance Frequency Diode Transistor Audible Continuity

Multi Tester with Backlit LCD- Red

by Neoteck
What We like

Nice Protective Red Shell with Stand Built The Case with Our Multimeter is Some Kind of Non Slip, Slightly Soft Plastic that Will Help with Drop Protection, The Stand Places the Device at a 45 Degree Angle and Makes the Screen Easy to See Hands Free

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Product Features

  • 2000 Counts 8233D PRO Digital Multimeter Wide Application: It Can Accurately Measure AC/DC Current Voltage, Resistance, Capacitance (4-2000uF), Frequency (1kHz-200kHz), Continuity
  • Included 9V Volt BatteryThe Compartment Lid at the Back is Secured by One Cross Head Screw, Not Difficult to Remove at All; Also, Included Pair Test leads and Pair Banana Plug to Alligator Clip Cable
  • CE Rated Digital Mulimeter with Over Load Protection Designed to Safely and Accurately Troubleshoot a Variety of Automotive and Household Electrical
  • Large Backlit LCD Display Auto Polarity Display, Easy to Read Large Backlit LCD Display, Back-light Makes a Real Difference in Low Light Areas

Large backlit lcd display auto polarity display, easy to read large backlit lcd display, back-light makes a real difference in low light areas Ce rated digital mulimeter with over load protection designed to safely and accurately troubleshoot a variety of automotive and household electrical Included 9v volt batterythe compartment lid at the back is secured by one cross head screw, not difficult to remove at all; also, included pair test leads and pair banana plug to alligator clip cable 2000 counts 8233d pro digital multimeter wide application: it can accurately measure ac/dc current voltage, resistance, capacitance (4-2000uf), frequency (1khz-200khz), continuity

3
9.3
SCORE
Auto Ranging Digital Multimeter TRMS 6000 with Battery Alligator Clips Test Leads AC/DC Voltage/Account,Voltage Alert, Amp/Ohm/Volt Multi Tester/Diode

Thsinde Auto Ranging Digital Multimeter TRMS 6000 with Battery Alligator Clips Test Leads AC/DC Voltage/Account

Voltage Alert, Amp/Ohm/Volt Multi Tester/Diode

by Thsinde
What We like

Easy Use and Clear Read: with large Overview Backlit LCD display which is visible in low light,3 times readings per second,3 5/6 Digital LCD Backlight Display for visibility in dimly lit areas

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Product Features

  • With 10 Auto-Ranging: Accurately measures AC/DC voltage and current, frequency, resistance, diode and continuity NCV test, It's a good 10 Function Digital Multimeter
  • Package Content: Digital Multi Meter 9V Battery, English User's Manual, 2 x Test Leads, 2 Alligator Clips
  • Continuity Test and Voltage Alert: Use the PTC ceramics protection circuit for Resistance and frequency measurement and Shielding Interference and Diode and Continuity Test can be 20000 F

With 10 auto-ranging: accurately measures ac/dc voltage and current, frequency, resistance, diode and continuity ncv test, it's a good 10 function digital multimeter Package content: digital multi meter 9v battery, english user's manual, 2 x test leads, 2 alligator clips Continuity test and voltage alert: use the ptc ceramics protection circuit for resistance and frequency measurement and shielding interference and diode and continuity test can be 20000 f

4
9.3
SCORE
LCR-T4 Mega328 Component Tester Transistor Tester Diode Triode Capacitance LCR ESR Meter Module MOS PNP/NPN M328(Battery Case with Shell)

Gearwoo LCR-T4 Mega328 Component Tester Transistor Tester Diode Triode Capacitance LCR ESR Meter Module MOS PNP/NPN M328(Battery Case with Shell)

by Gearwoo
What We like

This mega 328 tester can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage

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Product Features

  • Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFET, diode (including double diode), thyristor, transistor, resistor and capacitor and other components
  • lcr t4 uses 12864 liquid crystal display with green backlight
  • Transistor tester measures the gate and gate capacitance of the MOSFET threshold voltage
  • Electronic component tester automaticly test the pin of a component, and display on the LCD

Lcr t4 uses 12864 liquid crystal display with green backlight Electronic component tester automaticly test the pin of a component, and display on the lcd Transistor tester measures the gate and gate capacitance of the mosfet threshold voltage Automatic detection of npn and pnp transistors, n-channel and p-channel mosfet, diode (including double diode), thyristor, transistor, resistor and capacitor and other components

5
8.6
SCORE
ALMOCN LCR-T4 Multifunction Meter DIY kit Mega328 Transistor Tester Resistance Capacitance Diode Triode Capacitor ESR SCR MOSFET Resistor Inductance LCD Display with Case

ALMOCN LCR-T4 Multifunction Meter DIY kit Mega328 Transistor Tester Resistance Capacitance Diode Triode Capacitor ESR SCR MOSFET Resistor Inductance LCD Display with Case

by ALMOCN
What We like

Digital 128*64 LCD display for easy readings, can display measured data and graphics.

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Product Features

  • Use 9V battery(not included), can also use DC power(DC 6.8-12V). Automatic shutdown, shutdown current is only about 20nA.
  • Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFET, diode (including double diode), thyristor, transistor, resistor and capacitor and other components.
  • Can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage.
  • Measure capacitanceCan measure capacitance of 30pF-100mF , resolution 1pF.

Automatic detection of npn and pnp transistors, n-channel and p-channel mosfet, diode (including double diode), thyristor, transistor, resistor and capacitor and other components. Measure capacitancecan measure capacitance of 30pf-100mf , resolution 1pf. Use 9v battery(not included), can also use dc power(dc 6.8-12v). automatic shutdown, shutdown current is only about 20na. Can detect the transistor, mosfet protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage.

6
8.6
SCORE
Auto Ranging Digital Multimeter TRMS 6000 with Battery Alligator Clips Test Leads AC/DC Voltage/Account,Voltage Alert, Amp/Ohm/Volt Multi Tester/Diode(Red)

Thsinde Auto Ranging Digital Multimeter TRMS 6000 with Battery Alligator Clips Test Leads AC/DC Voltage/Account

Voltage Alert, Amp/Ohm/Volt Multi Tester/Diode(Red)

by Thsinde
What We like

Easy Use and Clear Read: with large Overview Backlit LCD display which is visible in low light,3 times readings per second,3 5/6 Digital LCD Backlight Display for visibility in dimly lit areas

more infoarrow_drop_down

Product Features

  • Continuity Test and Voltage Alert: Use the PTC ceramics protection circuit for Resistance and frequency measurement and Shielding Interference and Diode and Continuity Test can be 20000 F
  • With 10 Auto-Ranging: Accurately measures AC/DC voltage and current, frequency, resistance, diode and continuity NCV test, It's a good 10 Function Digital Multimeter

Continuity test and voltage alert: use the ptc ceramics protection circuit for resistance and frequency measurement and shielding interference and diode and continuity test can be 20000 f With 10 auto-ranging: accurately measures ac/dc voltage and current, frequency, resistance, diode and continuity ncv test, it's a good 10 function digital multimeter

7
8.5
SCORE
Auto Ranging Digital Multimeter and Clamp Meter - with Storage Bag Battery Alligator Clips Test Leads for AC/DC Voltage/Current Voltage Alert Amp Ohm/Volt Multi Tester Diode

Thsinde Auto Ranging Digital Multimeter and Clamp Meter

with Storage Bag Battery Alligator Clips Test Leads for AC/DC Voltage/Current Voltage Alert Amp Ohm/Volt Multi Tester Diode

by Thsinde
What We like

Voltmeter:Made of high quality ABS, lightweight and portable,durable enough for long term use, Suitable for distribution box, electrical circuit, home users, enthusiasts, professional electricians and technicians

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Product Features

  • With 10 Auto-Ranging: Accurately measures AC/DC voltage and current, frequency, resistance, diode and continuity NCV test, It's a good 10 Function Digital Multimeter
  • Digital Clamp Meter Multimeters:Autoranging clamp multimeter can be used to measure AC and DC Voltage, AC Current, Resistance, Diode test, Data Hold, Max Value Hold. troubleshoot electrical problems safely
  • Digital Multimeters:Continuity Test and Voltage Alert: Use the PTC ceramics protection circuit for Resistance and frequency measurement and Shielding Interference and Diode and Continuity Test can be 20000 F
  • Easy Use and Clear Read: with large Overview Backlit LCD display which is visible in low light,3 times readings per second,3 5/6 Digital LCD Backlight Display for visibility in dimly lit areas

With 10 auto-ranging: accurately measures ac/dc voltage and current, frequency, resistance, diode and continuity ncv test, it's a good 10 function digital multimeter Easy use and clear read: with large overview backlit lcd display which is visible in low light,3 times readings per second,3 5/6 digital lcd backlight display for visibility in dimly lit areas Digital multimeters:continuity test and voltage alert: use the ptc ceramics protection circuit for resistance and frequency measurement and shielding interference and diode and continuity test can be 20000 f Digital clamp meter multimeters:autoranging clamp multimeter can be used to measure ac and dc voltage, ac current, resistance, diode test, data hold, max value hold. troubleshoot electrical problems safely

8
7.4
SCORE
BSIDE ESR02 PRO Digital Transistor SMD Components Tester Diode Triode Capacitance Inductance Multimeter ESR Meter with test leads Black

AideTek BSIDE ESR02 PRO Digital Transistor SMD Components Tester Diode Triode Capacitance Inductance Multimeter ESR Meter with test leads Black

by AIDETEK
What We like

Testing time is about two seconds, only capacity or inductance measurement can cause longer period. Small Devices Container is design for placing the small size components. The Probe socket support different kinds of probes.

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Product Features

  • Detection of the protection diode of bipolar transistors and MOSFETs. Measuring of the Gate threshold voltage and Gate capacity value of MOSFETs. The inductance measuring range is from 0.01mH to 20H, out of range or if the resistor higher than 2.1K will be shown at resistor.
  • Automatic detection of NPN and PNP bipolar transistors, N- and PChannel MOSFETs, JFETs, diodes, double diodes, Thyristors and Triacs. Measuring of current amplification factor and Base-Emitter threshold voltage of bipolar transistors.
  • Package list: ESR02 Pro multimeter, one pair of Agllicator clip test leads ,Manual
  • With a Typical ESR Value of Electrolytic Capacitor table on the cover, e- asy for user to judgment the detected capacitor's quality. The ESR table is for reference only, use the manufacturer's data as standard.

Automatic detection of npn and pnp bipolar transistors, n- and pchannel mosfets, jfets, diodes, double diodes, thyristors and triacs. measuring of current amplification factor and base-emitter threshold voltage of bipolar transistors. Package list: esr02 pro multimeter, one pair of agllicator clip test leads ,manual With a typical esr value of electrolytic capacitor table on the cover, e- asy for user to judgment the detected capacitor's quality. the esr table is for reference only, use the manufacturer's data as standard. Detection of the protection diode of bipolar transistors and mosfets. measuring of the gate threshold voltage and gate capacity value of mosfets. the inductance measuring range is from 0.01mh to 20h, out of range or if the resistor higher than 2.1k will be shown at resistor.

9
7.4
SCORE
Neoteck Transistor Tester with Test Leads, Mosfet Transistor Capacitor Tester, NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector

Neoteck Transistor Tester with Test Leads

Mosfet Transistor Capacitor Tester, NPN PNP Transistor Diode Resistor Inductor Capacitance MOS SCR ESR Meter Automatic Checker Detector

by Neoteck
What We like

Come with a mini test leads and 9V battery.

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Product Features

  • This multifunctional capacitance meter can be used to test triode, field-effect tube(FET), diode, resistor, capacitor, inductor, MOS, SCR, which is available for various electric transistor testing.
  • Automatic shut-off to save power: Our advanced electronic transistor tester owns auto shut-down function. There is shutdown countdown displayed on the monitor.
  • Automatical Identification: This intelligent transistor checker is able to detect NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, thyristors, resistors, capacitors or other devices automatically.
  • Adopts TFT color LCD screen with high-resolution. Different parameter is shown with different color, convenient and simple for you to check the parameter.

Adopts tft color lcd screen with high-resolution. different parameter is shown with different color, convenient and simple for you to check the parameter. Automatical identification: this intelligent transistor checker is able to detect npn and pnp transistors, n-channel and p-channel mosfet, diodes, thyristors, resistors, capacitors or other devices automatically. This multifunctional capacitance meter can be used to test triode, field-effect tube(fet), diode, resistor, capacitor, inductor, mos, scr, which is available for various electric transistor testing. Automatic shut-off to save power: our advanced electronic transistor tester owns auto shut-down function. there is shutdown countdown displayed on the monitor.

10
7.4
SCORE
diymore Multifunction LCR-T4 Mega328 Transistor Tester Diode Triode Capacitance ESR Meter MOS PNP/NPN M328 with Capacitor ESR Testing Function Green Backlight LCD Display

diymore Multifunction LCR-T4 Mega328 Transistor Tester Diode Triode Capacitance ESR Meter MOS PNP/NPN M328 with Capacitor ESR Testing Function Green Backlight LCD Display

by diymore
What We like

Automatically detect NPN, PNP bipolar transistors , N -channel and P -channel MOS FET, JFET , diodes , two diodes, thyristors small power unidirectional and bidirectional thyristor. Automatic identification components pin arrangement .

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Product Features

  • M328 version of the software ,more functions(Chip: Atmega328).128*64 big Backlight LCD display,only 2mA when stand by.Using 9V battery (Not included). Use 12864 liquid crystal display with green backlight.
  • Can measure a single diode reverse capacitance. If the bipolar transistor connected to the base and collector or emitter of a pin. It can measure the collector or emitter junction reverse capacitance .
  • Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFET, diode (including double diode), thyristor, transistor, resistor and capacitor and other components. Automatic test the pin of a component, and display on the LCD.
  • Can simultaneously measure two resistors and resistor symbol is displayed. Displayed on the right with a decimal value of 4 . Resistance symbol on both sides shows the pin number.So you can measure the potentiometer. If the potentiometer wiper is not transferred to an extreme position , we can distinguish the middle and both ends of the pin.

Can measure a single diode reverse capacitance. if the bipolar transistor connected to the base and collector or emitter of a pin. it can measure the collector or emitter junction reverse capacitance . Automatic detection of npn and pnp transistors, n-channel and p-channel mosfet, diode (including double diode), thyristor, transistor, resistor and capacitor and other components. automatic test the pin of a component, and display on the lcd. M328 version of the software ,more functions(chip: atmega328).128*64 big backlight lcd display,only 2ma when stand by.using 9v battery (not included). use 12864 liquid crystal display with green backlight. Can simultaneously measure two resistors and resistor symbol is displayed. displayed on the right with a decimal value of 4 . resistance symbol on both sides shows the pin number.so you can measure the potentiometer. if the potentiometer wiper is not transferred to an extreme position , we can distinguish the middle and both ends of the pin.

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