Summary of Component Tester FISH 8840 Review
The FISH 8840 is a budget-friendly component tester priced around $30. It features a simple interface with two buttons and an LCD screen that identifies components like transistors, MOSFETs, diodes, and capacitors. The device includes a ZIF socket for leaded parts and pads for SMD components. While it generally works well, the reviewer noted a potential issue with specific capacitor values on their unit.
Parts used in the FISH 8840 Component Tester:
- ZIF socket
- SMD testing pads
- LCD display (12864 liquid crystal with green backlight)
- Test button
- Off button
- Connection points labeled 1 through 3
This is an inexpensive component tester called the FISH 8840 which you can find from many online eBay retailers for around $30. The interface is very simple, attach a device to be tested and press the test button. It turns off after about 20 seconds, pressing the off button puts it into sleep mode immediately. There is a ZIF socket that allows you to insert leaded devices and pads that allow you to press SMD devices directly onto the tester. Their are number 1 through 3 on the tester where you connect the device under test to and then the screen will display the recognized component with the lead numbers on a component schematic picture. There seems to be an issue with the capacitor testing mode with a range of values, I will discuss this with the seller to see what the resolution to this is. I have seen this tester work fine with capacitors so I think it is just something with this one. You can see the features and functions below.
“NEW Function:
1: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
2: Automatic test the pin of a component, and display on the LCD
3:Can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage
4: Measure the gate and gate capacitance of the MOSFET threshold voltage
5:Use 12864 liquid crystal display with green backlight
Size:140*90*55MM
Specifications: For you reference
1 two -button operation, automatic shutdown .
2,Only 20nA shutdown current.
3,Automatically detect NPN, PNP bipolar transistors , N -channel and P -channel MOS FET, JFET , diodes , two diodes, thyristors small power unidirectional and bidirectional thyristor.
4,Automatic identification components pin arrangement .
For more detail: Component Tester FISH 8840 Review
- What is the price of the FISH 8840 tester?
It can be found from online eBay retailers for around $30. - How do I turn off the device immediately?
Pressing the off button puts it into sleep mode immediately. - Does the tester support SMD devices?
Yes, it has pads that allow you to press SMD devices directly onto the tester. - What types of transistors can it detect automatically?
It detects NPN and PNP bipolar transistors as well as n-channel and p-channel MOSFETs. - Can the device measure MOSFET threshold voltage?
Yes, it measures the gate and gate capacitance of the MOSFET threshold voltage. - What happens if the device is left idle?
The device turns off automatically after about 20 seconds. - Are there any reported issues with this specific model?
The reviewer noted an issue with the capacitor testing mode regarding a range of values on their unit. - What kind of display does the tester use?
It uses a 12864 liquid crystal display with a green backlight.
