FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter

Update to original Review ~~~~~~~~~~~~~~~~~~~~ I updated my review to 5 stars for the simple reason the support folk responded swiftly (within 36 hours) to my issue of a broken black lead and have shipped me a new set of leads to rectify the situation even though I clarified I only needed a replacement black lead. That's the kind of after sale service we all yearn for, a seller/manufacturer that cares about its customers. They say it may take 10 days for the leads to get here but they've given me a shipping tracking number and I'm perfectly ok with waiting. Thanks guys for caring. The meter continues to provide impressive results on analyzing and calculating the values of components I've tried. I realize some reviewers have noted issues but again, in cases where I can determine the part number of transistors etc, I've not had any issues testing the ones I have confirming them against the manufacturers specs. For the price, even though this unit seems very light weight and perhaps feels a little flimsy due to its tiny size, I'm impressed and will continue to add my recommendation, more so now I've received excellent after sales service to rectify a lead problem. At some stage I hope to find a small hard shell case I can keep it in but for now, I've retained the box it came in as it affords protection for the ZIF lever which protrudes out the side. Not a big issue. Original Review ~~~~~~~~~~~~~ To be upfront, I've emailed the support folks regarding this. If they respond and deal with the issue I'll gladly change the review but for now... Received the unit today. Here's the initial review. The unit is much smaller than I had expected. It works great!!!... but it is tiny. I tested transistors, mosfets. caps (various types), resistors, even tested the IR detector. IR detector worked just fine. It appears to give different codes for different buttons so I have no reason to disagree with the results. Capacitors tested were all correct results. Only thing I noticed is that the cap rating was within 2-3% of the caps rating. Some were spot on. None the less, I would say all caps tested were correctly identified. MOSFETs tested were all correct results. After reading reviews I decided not to just plug them in but checked online for the pinouts and use the leads. This is where I encountered a problem... The supplied black lead arrived broken! More on this later. I temporarily rigged up a lead from some other test leads I had. It correctly identified the MOSFETs I tested. Transistors. Same as MOSFETs, they all tested with correctly identified results per spec sheets I found online Resistors all tested correctly with the correct ratings. The screen display, while small, is very legible. I had no issues reading results and the color screen is actually very nice and clearly labels the pins on the connector. Very nice!!!! I did remove the ZIF and install the surface mount just to see it fitted okay. Not sure I'll use that part but wanted to see it fitted. The ZIF attached to the circuit board feels a little a little fragile but as I said, I will use this almost exclusively so I currently see no reason to remove/replace it with any frequency. So I'm totally happy with this setup for my situation. I did charge the unit using a standard 5v 2aH USB-C charger and cable. Charged fully within 45 minutes. No issues there either. So I have to say, very impressed. Everything tested thus far was correctly identified per the ratings either on the component or on the spec sheets. The black test lead arrived "broken". The test leads are not a great quality but none the less, one is broken. I've emailed support to see if they are going to replace the lead. If not I will return and request a replacement of the order from Amazon. If they replace the lead, I'll gladly change the rating to 5 stars because functionally I was very impressed with the unit. Now a minor quirk... Do NOT throw away the box... unfortunately, the unit is tiny and looks/feels fragile. Also with the ZIF connector, the lever sticks out the side so actually it's best kept in the box to keep it safe. I have no problem with that but the box tore very easy while trying to open so I ended up using some clear packing tape to strengthen it and hold it together. Still, this is a minor quirk and has nothing to do with the units functionality. So depending on whether the support folks are going to replace the broken test lead or I have to return it to get one that isn't broken, time will tell. I'll give them a week or so to respond and if nothing heard, back it goes for replacement. Yes, I would replace it because functionally, this does everything I had hoped it would do. If you do buy one, check the leads and meter functionality soon as you get it. If you're expecting it to give 100% ratings, you might be a little disappointed but as everything I tested came in 2-3% with some being spot on, it would be sensible to also note that the variance could be the components tested themselves. The electrolytic caps were new and some were used, the MOSFETs, other caps, resistors etc were all used (taken off dead circuit boards). I was testing things to see that they they came within an acceptable range of the rating and in my case, they did.

got it to test caps on everything from computers to A/C units.....it works but never shows rated listings....on a 1.8 cap it reads 1.7......but this lets me know the cap works so i can go on to the next one.....so for me it does what i need and gives me a YES or NO....yes is being close to the numbers on the cap and no is not getting a reading.....easy......

This is a nice upgrade for me from an earlier model with a monochrome screen, a 9V battery that would drain while off, and spring terminals that I eventually bent. This improves on all of those flaws, however, there are a few things that could/should be improved. 1) When powering on with a device connected, it does not actually test the component but nevertheless goes to a screen that says nothing or a broken component is connected. You have to press the test button a second time to actually test the already-connected device. 2) A couple holes on the back or side to store whichever connector you're not using (SMD or ZIF) would be great. 3) The spring hooks provided are embarrassingly cheap and feel like they'll fall apart at any moment. 4) It will (repeatably) have trouble recognizing some of the logic-level MOSFETs I've been working with depending on which way I put it into the socket... try reversing the pins if this happens on the device you're testing.

Have tested various SMDs, in circuit capacitors and resistors, MOSFETs, and a Zener Diode. Never used a tool like this before, but found it really cool that it graphically (in color) diagrams leads and provides significantly more information than can be read with a standard multimeter. Measured values were in-line with spec sheets/manufacturer data for all the various components tested, didn't experience any drops or drifting measurements. A set of probes would be nice, included clip leads are pretty lightweight. Have no idea what the RF data means but zapped the meter with my TV remote and the meter definitely shows some sort of waveform info. Seems like this function works, although don't have enough knowledge to confirm accuracy. Overall construction is fine, should last if handled with care. The locking system for leads is a little tricky when inserting multiple leads. Unit is very compact. Quick charge time, and single charge lasts plenty for a couple day's worth of heavy use. As an amateur who tries to repair my electronics that fail (eg tested LEDs and main board components on flat screen TV with faulty display) and assembles small Arduino projects, this thing is awesome for taking measurements and has allowed me to increase my depth of knowledge of various electronic components. For the price (especially warehouse deal), super handy to have on hand.

I bought this to replace a 10+ year old transistor-tester & LCR meter that came without an enclosure and eventually died on me. This unit works well and so far the test results match up with what I expected so I trust the data it spits out. The display is very good quality for what this is, it puts my multimeter & other equipment to shame in how easy it is to read & use. I have not yet had to charge the internal battery so I do not know how long the battery lasts or how long it takes to recharge.

This review is for software version 1.0.8 of this item purchased 12/25. Manual says new updates may be downloaded when available. A product with many issues should have never been shipped. I thought this was a new product just out with missed bugs, but it has been produced for two years. After some research, this SW version has been out for a year. I have used one of those $10 boards for years and never found a real issue with it. In a recent move it got lost and needed to be replaced. I was looking for one with a real case and rechargeable battery. I found the ability to decode a remote to be a handy feature which induced me to buy this. The following are some of the usability issues with this model. Having to press the test button twice is really annoying. It always comes up with unknown part first being displayed. The screen font is too small. There is no reason for this. I don't normally wear glasses and I often document the screen by taking a picture. Screen print is too small to take a picture. This is a total lack of consideration for those who use this. I feel like this is a step backwards from what I used before. Resistance is only three digits and is almost off by 2%. Cheap meters can get to better than 0.5%. If those extra digits aren't exactly real, they can still be used to compare like components. All functions seem to give less data. The major issue is that pin identification can not be trusted at all. This is one of my major uses, identifying the pinout of of an unknown transistor. For example: NPN transistor with EBC configuration flat face to you reads incorrectly backwards CBE. Rotate that NPN 180 degrees and it does read correctly. This changes between NPN, PNP, and other lead configurations. I discovered this in less than 15 minutes of working with this. You can't tell me they made any serious attempt to test this software. Who knows what other problems exist. I lie the new transistor they invented with emitter as the center pin. You don't need to see more. All pictures have flat face of transistor facing up. This is a company that is driven by marketing and not engineering. I have several of their products and they always ship with issues. I always have to load in new software the day I receive the item. The philosophy is ship it, we'll fix the problems later. This was a waste of money. If you feel you must have this item, please wait six months for them to fix it.

I’ve been using the FNIRSI LCR-P1 for a while now and overall, it works well for quickly testing components like transistors, MOSFETs, capacitors, and more. It comes with test clips and an accessory for checking SMD components, which is really convenient for surface-mount work. The interface is simple, and the display is bright and easy to read. The internal battery is another plus it holds a charge well and lasts long enough for extended testing sessions without needing frequent recharging. Compared to other testers I’ve used, this one offers very good accuracy when measuring component values. It’s surprisingly precise for the price and gives consistent readings. However, even after updating to the latest firmware, it still has the same issue: no matter how I insert the electronic part, it doesn’t detect any change in polarity. This can be frustrating when testing diodes or polarized capacitors. Despite that, it’s a solid little tool for quick diagnostics and component ID. For the price, it's a great value and a handy addition to any electronics workbench just keep in mind the polarity limitation.

This liitle guy will test bi-polar, FET, diode, capacitors, inductors, resistors, and who knows what else. This is a must have for parts matching and troubleshooting.