EEVblog 1650 - Sequre HT-140 SMD Desoldering Tweezers REVIEW - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: November 05, 2024, 11:11:27 pm
content: Review of the USB-C Sequre Desoldering Tweezershttps://s.click.aliexpress.com/e/_DB88oqz

author: black6host
author_rank: Contributor
timestamp: November 06, 2024, 11:09:17 pm
content: FYI, the package Dave is showing, with the power supply, is not what you'll get for $99 Yankee Bucks. If you want the supply pick the package appropriate that costs $109 Yankee Bucks.Regardless, I like it. The build quality looks good, the fact that you can use JBC tips is a plus as well. Hah, birthday and Christmas is coming up soon...

author: GeraYr
author_rank: Contributor
timestamp: November 06, 2024, 11:11:21 pm
content: Nice review, thank You very much. Here isSequre HT140 Operating Instructions, v.1.0and separate file with short explanations about Turbosets (temperature presets)

author: GeraYr
author_rank: Contributor
timestamp: November 06, 2024, 11:19:32 pm
content: On the other hand, it is not necessary to buy a GaN charger from Sequre, although its price is not high. You can also use a DC power source such as a computer power supply or almost any charger that supports PD3.0 or PD3.1. It also works with chargers weaker than 65W, but it heats up more slowly. 65W chargers are not expensive and many people have it, 100w chargers are also common.

author: black6host
author_rank: Contributor
timestamp: November 07, 2024, 03:46:42 am
content: Quote from: GeraYr on November 06, 2024, 11:19:32 pmVery true, though I almost added the wrong one to my cart, just pointing out facts. I decided to wait though. But it's on my list!!

author: quispiam
author_rank: Newbie
timestamp: November 07, 2024, 04:59:29 am
content: This is super cool, been looking for a good pair of hot tweezers for a while, I'll have to get one!Dave, have you checked the tip grounding of the iron? The first part is whether the tip is grounded to the USB shield (the heater resistor in the tip is pretty low resistance so it can be worthwhile to check the tip to USB shield voltage while the iron is running), and the second part is whether the USB-C charger is grounded (unlikely given the lack of AC GND pin). It's not an immediate deal breaker, but I've had situations where i've blown components because my scope GND lead was still connected to the PCB while, and the soldering iron tip was floating around 60VAC!.Some lessons i've learnt re USB-C soldering iron grounding:- Is your USB-C power supply grounded? Almost all of them are not (eg the one sequire sent doesn't have the third gnd pin on the AC side, so it's not grounded). The grounded USB-C supply i've been using is of these 245W ones (see link at bottom). The only way i found to tell before buying was the 3 pin power plug visible in some of the images. I power my laptop, phone, and soldering iron with it when i'm travelling for work haha- Does the USB-C iron have the correct pin connectivity to ground the tip. The Sequire C210 iron i have has the correct tip connections, but the Sequire C245 style iron had the wrong tip-sleeve-ring connections to the cartirdge! This resulted in high current+20VDC (referenced to USB-C GND) being toggled onto the tip at several kHz! Not good for most components :'(. I cut the traces and bodged to connection and now my one is fine, but was a bit of a pain!If you're not sure of tip grounding, the easy solution is just to make sure every possible GND is disconnected from you PCB before you touch it with the soldering iron. That means scope GND leads, any programmers or debuggers that might be connected to you laptop, any non-isolated power supply grounds etc etc. Maybe this is just good practice and i've been cutting corners, but its such a pain to disconnect all the carefully balanced test leads just to change one resistor!Don't get me wrong though, i love USB-C powered equipment and it's here to stay in my  lab. Bring on the 250W USB-C spec, i want a USB-C hot air gun!This is the style of grounded 245W USB-C charger i bought (the link of the exact one is now broken):https://www.aliexpress.com/item/1005008001950627.html?spm=a2g0o.productlist.main.17.7936YxV6YxV6u5&algo_pvid=120b02f0-d1a4-4a1b-81c1-0178e234a365&algo_exp_id=120b02f0-d1a4-4a1b-81c1-0178e234a365-8&pdp_npi=4%40dis%21AUD%21228.78%21114.39%21%21%211068.57%21534.29%21%402101c72a17309539945913507ec39d%2112000043220960110%21sea%21AU%21185752513%21X&curPageLogUid=GTycXw4b55E8&utparam-url=scene%3Asearch%7Cquery_from%3A

author: GeraYr
author_rank: Contributor
timestamp: November 07, 2024, 08:58:32 am
content: Quote from: quispiam on November 07, 2024, 04:59:29 amCan you share some photos? I know the S99 C245 tip isn't connected in the usual way, but I haven't had a bad experience yet - maybe I will do the same as you did to avoid possible problems when soldering sensitive elements. By the way, S20-S60-S60P-S99 soldering irons have the possibility of tip grounding (screw near USB-C port), only sometimes you should check whether the screw sleeve has not broken off from the main board - sometimes it breaks off if the grounding screw is used often.I, like the majority of other users who do not solder sensitive components, probably did not even pay attention to this.Also, one possible solution would be to power the soldering iron from a Power bank or battery when soldering sensitive components.

author: PlainName
author_rank: Super Contributor
timestamp: November 07, 2024, 03:17:19 pm
content: Looks like you got the version for the Northern Hemisphere - can't think of any other reason for the tips being mounted upside down.More seriously, using grub screws to secure the tips is a very bad idea engineering-wise, particularly since they are gripping hollow tube. You can see where the tube has been dented by the screws, so making a small adjustment to the gap between tips would likely be impossible now.A much better solution would have been along the lines of a collet. Wouldn't even need the normal separate part since the tip shaft size won't change, and just splitting the holder and putting a chamfer on the end would be reasonably cheap but a much better solution.

author: bitwelder
author_rank: Super Contributor
timestamp: November 07, 2024, 06:33:16 pm
content: The temperature shown on the display where is measured: left tip, right tip, or it's some average of the two?

author: thm_w
author_rank: Super Contributor
timestamp: November 07, 2024, 10:10:57 pm
content: Quote from: PlainName on November 07, 2024, 03:17:19 pmUpside down? You want them to curve up like that so you can grab components flat on the board, as he demonstrates at 10:11.QuoteAgree, most other tweezers allow micro adjustments. These don't allow it easily, collet would help at least.

author: PlainName
author_rank: Super Contributor
timestamp: November 07, 2024, 10:36:19 pm
content: Quote!They have fine tips to grab tiny things, and curve so the tips go in vertically while the body is at a comfortable angle (and gets under the microscope). The way shown means they go in horizontally and risk melting whatever board furniture is close by, desoldering neighbour parts unintentionally, etc. If you need wide tips for big parts then there are curved ones available in the same size you'd use for straight tips.Seriously, if they were designed to be used as shown they wouldn't taper to tiny points. And how about those similar ones that have the bend further back? Used appropriately they would give you more headroom above components; used as shown they'd be snagging on stuff all the time.And... if you used a non-tweezer iron (aka normal one) with bent tip, would the tip be up or down? I think that's the clincher.

author: thm_w
author_rank: Super Contributor
timestamp: November 07, 2024, 11:21:52 pm
content: Quote from: PlainName on November 07, 2024, 10:36:19 pmYeah they aren't designed for the task, which is why they won't work well with the tiny points when angled downwards. They are just off the shelf C210 clone tips, which every vendor makes three types of (knife, conical, and conical benthttps://www.aliexpress.com/item/1005007512225934.html).Your photos show examples with wider tips that could work well when angled the other way.https://smtsupplies.com/cdn/shop/files/hakko-fx-1003-micro-tweezers-conversion-kit-for-fx-100-soldering-station-905374.jpg?v=1706869827&width=600

author: PlainName
author_rank: Super Contributor
timestamp: November 07, 2024, 11:47:28 pm
content: Huh! What do JBC know

author: W00fer
author_rank: Contributor
timestamp: November 09, 2024, 12:54:08 am
content: I saw in some video reviews that the temperature increments are 50 degrees now.Since a custom firmware voids the already very poor warranty (Paypal 180 days) and Sequre: 90 days where we have 2 years in the EU, I doubt I will use a custom firmware. But I like having a lower incremental value, just like the new iFixit Fixhub, where you can control the temp with a wheel.Maybe this one will work with the Fixhub, and you have hot tweezers on a batterypack (170 USD overpriced but okay).Also, since it most likely uses an STM32 chip, is there a chance of custom firmware? I see some other Sequre USB-C soldering irons already with updates. This HT-140 doesn't have any yet?This is my first usb-c soldering iron. Thought to use it with a Ugreen 100W usb-c power supply but I might use a DC adapter which will be grounded.Anyone can recommend a DC5525 power supply that is not a fire hazard? Thought of using an Asus laptop one but it's 19 volts not 20 as the iron will expect.It's the only 120W adapter I have. 140W will be harder to find.

author: GeraYr
author_rank: Contributor
timestamp: November 09, 2024, 07:46:01 am
content: Quote from: W00fer on November 09, 2024, 12:54:08 amThe temperature increment value in manual temperature set mode can be set in the menu, range from 1 to 100 degrees, default is 50.After Sequre added Turbosets to its firmware for their soldering irons and the HT140, custom firmware cannot offer more options and functionality, so the need to use custom firmware disappeared by itself.You can use DC power supply up to 28V, there is no limitation from tweezers side to 20V only. 65W-120W is enough, IMHO.

author: GeraYr
author_rank: Contributor
timestamp: November 09, 2024, 08:59:58 am
content: Quote from: bitwelder on November 07, 2024, 06:33:16 pmThe highest temperature is displayed on screen at any time, because the high temperature is the most dangerous - you can burn yourself or burn the component being soldered.For example: in standby mode, after replacing the soldering iron tip, one side has a room temperature of 25°C and the other side is still at a high temperature of 200°C, for example. The screen will display the maximum temperature of 200°C, so that users can be careful about high temperature instead of displaying 25°C or the average value.The same is true for the working state. But because the two sides are actually heated independently, so If they detect that the temperature deviates from the set target temperature, they will continue to heat to the target temperature.

author: W00fer
author_rank: Contributor
timestamp: November 09, 2024, 09:42:23 pm
content: I don't agree that a custom firmware cannot bring good features.IronOS claims to improve reliability and if it can lower the OLED panel wear the longevity of the unit will be better.Since Sequre does not sell any spare parts the OLED panel is probably the most fragile component.And since there is no web interface to change the temperature or settings you need the panel.Seems the display can be replaced with:https://www.good-display.com/product/0.69-inch-small-white-96x16-dots-OLED-display-GDOA0069W-287.htmlor maybe this one?https://www.buydisplay.com/graphic-i2c-0-69-inch-96x16-oled-display-mp3-module-white-on-black

author: MR
author_rank: Regular Contributor
timestamp: November 10, 2024, 07:31:58 am
content: JBC got too greedy with the soldering tips I shelved their soldering station, 45EUR for one C105 tip and 2 are needed, 25 EUR was already expensive but I was okay with that, 45 EUR I just don't see the value because they won't stand very long.When desoldering be sure you support it with a hot air gun it will increase the lifetime of the tips a lot, and the components will get off instantly too so not much stress for the surrounding parts.This one seems to be a good alternative.

author: quispiam
author_rank: Newbie
timestamp: November 12, 2024, 05:33:40 am
content: Quote from: GeraYr on November 07, 2024, 08:58:32 amAttached is a picture of the mod i made to the Sequire S99 C245 iron. I marked it up where i cut fully through the PCB (and taped over with kapton tape), and then reconnected the 3 terminals in (what my research suggested) is the correct pinout. There is some confusion around the net about the pinout, so double check it. But yeah, my tip no longer jumps between 0V and 20V (referenced to USB GND) while the iron is running! Looking at the mod again now, i've made a pretty big hot loop for the switching power through the tip in my haste to GND the tip properly. You might be better off tying the GND wire in as close to the SO-8 mosfet as possible as well. I might be overthinking it though, it seems to work.The Sequire S60P C210 was connected correctly as far as i could tell, and the all metal L245 usb-c iron i ordered from aliexpress some other time also has the correct pinout (ie tip is connected to the USB-C shield). I've added a phote of all three below as well.I like the idea of just using a power bank, although with the really big tips i have seen these USB-C irons go up to 120W during initial heatup! And i'm sure that whenever i really needed to solder something i'd realise that i'd forgotten to charge the power bank 😅

author: W00fer
author_rank: Contributor
timestamp: November 14, 2024, 02:05:15 am
content: Sequre send out my HT140. They confirmed that the sleep mode which turns off the display only works when the iron is not in use.If the iron is in use, there is no way to turn off the display. I hope that they bring this in a firmware update to prolong the lifespan of the OLED.Basically they denied that OLED (which is an organic material) wear exists, which is very weird. Fade out, burn in or other problems do exist with OLED.It's most likely that a compilation of IronOS might be able to do this, but there is no port yet.

author: ceut
author_rank: Regular Contributor
timestamp: November 21, 2024, 01:13:35 am
content: I have ordered one too, and hope that it will be a good tool to work withOn the reviews, we can see on the Oled screen that this tweezer overshoots a lot before stabilizing at the settled temperature.Sequre, as many chinese lowcost manufacturers, is not good at correcting bugs or improve thingsAnd I don't think that IronOS will be implanted for this toolNot a single link to support on the item page:https://sequremall.com/products/sequre-ht140-2in1-hot-tweezers-soldering-iron-desoldering-repair-tool-for-smd?variant=44204748275900And nothing (yet?) here:https://sequremall.com/blogs/sequre-product-firmware-upgrade

author: W00fer
author_rank: Contributor
timestamp: November 22, 2024, 06:22:00 pm
content: I received mine today. Firmware 1.03No overshoot seen thus far.It's actually better than most Aliexpress tools.For super small 0402 or 0603 the standard tweezers are too big. They don't clench far enough. They don't end up punching eachother.The firmware is not super intuïtive. You have long and short button presses. Button hold and two buttons at the same time to control it.Packaging is nice but the USB-C cord should be longer.Is it worth the 100USD while a normal Sequre Iron is about 40? You do the math.I think they are promoting the tool now with Halloween and Black Friday sales so it's a bit early to tell if and when they update it.Motion sensor is very sensitive. I hope to see some options to dump the firmware so IronOS can have a look.

author: GeraYr
author_rank: Contributor
timestamp: November 24, 2024, 09:29:36 pm
content: Quote from: W00fer on November 22, 2024, 06:22:00 pmWhy You can't twist the soldering tips in the holders to make them close together for 0402 or 0602? The C210-002 (C210-IS) soldering tips are among the smallest suitable even for packages 0201 and 0402.There are only two buttons for control, many users find it very simple. Have you read the user manual if You have questions? You don't have to constantly go into the menu and change something, just use tweezers and you will gain more experience.

author: I.T. Manager
author_rank: Newbie
timestamp: November 25, 2024, 06:38:55 am
content: I want (and need) tweezers like this, but after watching Dave's review, searching online and reading the HT-140 documentation, I can't find any information as to whether the screen flips / inverts for left handed users.Can anyone help ?, as I don't want stray electrons or liquid crystals falling out when used upside down.Thanks in advance.

author: Neganur
author_rank: Unknown
timestamp: November 25, 2024, 08:30:27 am
content: Menu item OLED lets you select 0/180 degrees display direction.

author: I.T. Manager
author_rank: Newbie
timestamp: November 26, 2024, 12:28:27 am
content: Quote from: Neganur on November 25, 2024, 08:30:27 amThank you kind sir, I will put my order in for one ASAP.

author: ceut
author_rank: Regular Contributor
timestamp: November 28, 2024, 09:37:29 am
content: I have received mine some minutes ago.FW 1.03 too.After making some adjustement on tweezer, and setup some items in the menu+voltage calibration (+0.2V offset for mine - checked with my Keysight U1232A DMM): I find this really a great tool after testing removal of some SMD caps and RIt is super fast for that taskMenu items are not so hard after understanding the 5s timeout for waiting to go back.But I have some T° overshoot showing on the Oled screen like we can see on the Dave review, but not as big as in the video, don't know if it is a bug with having 2 sensors, or real overshoot ? I will try to check that back home.Also, I have not found support page on the Sequre website for downloading firmware of this HT-140.So I don't know how the 1.02FW user could upgrade their tweezersEdit:>About 2 to 5°C off so it is good, will try to calibrate it later.>All is grounded to USB-C and DC ground. About 100VAC between tips and mains ground. Will try also to put the mains ground on negative, but I have to check the leakage current before.>Positive DC Jack is also the positive USB-C, so we can also power directly from USB-c at any voltage without having a PD or any other handshake protocol negociation.I already do this with my MHP30 hotplateEdit2: Youtube video on my little chanel here:

author: ceut
author_rank: Regular Contributor
timestamp: November 29, 2024, 04:32:20 pm
content: So I have checked the current leakage from DC GND to Earthground: very very low 0.27mA on U1272A which has a low burden voltageI have also checked the USB-C cable which was in the package with the superb japanese USB tester: great quality with 147milliOhms=>The simpliest way to ground the HT-140 is to take a spare used USB-A cable and put the Negative DC and Shield to the AC Earthground : it will put the USB-C to Earthground too directly from the Sequre PSU(that(s what I have done for testing, and will made that more permanent)Here are photos as always

author: W00fer
author_rank: Contributor
timestamp: December 03, 2024, 07:24:02 pm
content: Sequre is working on adjustable motion sensor support in firmware to come.For me it's very sensitive now.

author: ceut
author_rank: Regular Contributor
timestamp: December 03, 2024, 08:15:37 pm
content: Quote from: W00fer on December 03, 2024, 07:24:02 pmGreat to read that, same thing for me: the sensor setting is wayyy too sensitiveAlso, I have made my first video of my HT-140 in real use, and also with my new cameraHere is the short video:

author: W00fer
author_rank: Contributor
timestamp: December 04, 2024, 01:48:16 am
content: Quote from: ceut on December 03, 2024, 08:15:37 pmNice video. I hope you will work out the manual focus if possible.Sequre can do a lot more with the firmware but it's upto us to ask them. Since there is a steep language barrier I might suggest bugs and features also in Chinese to them. Albeit with Google translate.

author: ceut
author_rank: Regular Contributor
timestamp: December 04, 2024, 06:55:33 am
content: Quote from: W00fer on December 04, 2024, 01:48:16 amThank youFor the focus, yes I saw it after reviewing the video on my computer.In fact, the camera has tried to focus sometimes on my gloveI have actived the tracking mode, and targetting the PCB (this one works as we can see in the video that the camera is moving its head alone)I think that when the camera lost the tracking of the PCB, it tries to focus on the closest item when the tracking object is lostWill try to do better next time (with manual focusing I think)For firmware improvement, I have to send a mail to Sequre to add the PowerON sensor mode, as I have (and always use) with IronOS on my TS-100.=>This mode heats up when I take it up from the cradle, from room temperature, without doing any action on A/B buttons, and only after powering the unit.Edit: Mail sent to Sequre contact support with this improvement firmware proposalHope they will reply me(it is this setting on IronOS of my TS-100:https://ralim.github.io/IronOS/Settings/#setting-start-up-behavior, set to "R=standby, heat-off until moved" )

author: ceut
author_rank: Regular Contributor
timestamp: December 05, 2024, 11:53:53 am
content: Quote from: quispiam on November 12, 2024, 05:33:40 amHello,Thank you for poiting thisI have received my S99 this morning, and I have 5.5Ohms between the tip and the USB-C shieldThe rear screw is also connected to the tip, so 5.5Ohms too between this screw and USB-C shield.So completely different from the HT-140, where (I think) they have fixed this.I have the latest board 1.5 version into it (it is showing it in the menu)HW version: 1.5SW version: 1.08So I have to fix that tooQuestion: Is there any problem with the feedback of the thermocouple (negative voltage value) after the mod ?Thank youEdit: I have found a russian guy who has done a great job with all JBC pinout analysis cartridge here:http://adgd.ru/2021/01/04/jbc-soldering-cartridges-pinouts/Edit2: I found "my way" to fix this, and have opened a new topic S99 here:https://www.eevblog.com/forum/reviews/sequre-s99-topic-mod-infos/msg5741905/#msg5741905

author: W00fer
author_rank: Contributor
timestamp: December 05, 2024, 05:47:16 pm
content: Someone dumped the HT140 1.03 firmware on IronOS github, made rudimentary pinouts and took photo's of the PCB.So I hope either the features he requested are forwarded to Sequre team or are made available in IronOS.Firmware is 64kb and the rest is available space.

author: Demon Xanth
author_rank: Contributor
timestamp: December 19, 2024, 09:02:10 pm
content: Something I've noticed with mine:Though it says it can do PD140, I have yet to see it request more than PD60. Even with a PD240 cable and PD100 and PD140 supplies.My PD140 battery bank wouldn't negotiate with it at all. (but then it also had issues with my DHO804, so I blame Baesus on that one).Removing some SMT electrolytic caps from some boards and SMC sized diodes, it worked very well though!Edit:I found the menu options. I'm a dingus.

author: W00fer
author_rank: Contributor
timestamp: December 26, 2024, 05:20:09 pm
content: Sequre needs 2 things in this firmwareIf you connect a 100w charger 20v 5A and then a 15v 3a (45w) charger it bootloops until you change the setting in the menu.Also if you disconnect one of the tips it goes constantly into beeping error, until you plug it back in and turn it off in the menu.It should fallback to one only if the other isn't connected.

author: W00fer
author_rank: Contributor
timestamp: January 02, 2025, 02:09:32 am
content: It seems that the 3 and 5 mm wide C210 addons are only manufactured by Sequre?Anyone got another link for them?

author: atroz
author_rank: Newbie
timestamp: January 02, 2025, 07:53:07 pm
content: YIHUA has some that look the same. I ordered them yesterday because AliExpress offered free shipping on them but not the Segure ones. Will take a week or more for them to arrive and see if I made a mistake or not.https://www.aliexpress.com/item/1005008269476408.html

author: W00fer
author_rank: Contributor
timestamp: January 03, 2025, 12:46:06 am
content: Quote from: atroz on January 02, 2025, 07:53:07 pmThanks a lot. I tried to find these but only found C245 ones.

author: IanJ
author_rank: Unknown
timestamp: January 03, 2025, 04:37:14 pm
content: I have these tweezers, but didn't like the lack of earth ground on the PSU which was generating 104Vrms / 335Vp-p on the tips!......so did something about it:https://youtu.be/se6-jGZsHS0Ian.

author: W00fer
author_rank: Contributor
timestamp: January 06, 2025, 06:04:18 pm
content: Do these tweezers require 20v exact or is 19.5 also okay?I have a 180W Dell power supply for a laptop that does 19.5v 9.23AModel HA180PM180Are the amps limited to 5?Manual indicates it should be 28v 5A for 140W but this could be firmware limited?

author: W00fer
author_rank: Contributor
timestamp: January 06, 2025, 06:26:23 pm
content: Quote from: IanJ on January 03, 2025, 04:37:14 pmWould this be a solution? Just connect a wire from the tweezers to this plug.

author: edavid
author_rank: Super Contributor
timestamp: January 06, 2025, 08:20:44 pm
content: For those in the US, it looks like the current lowest price is from newegg @ $89.99 with free shipping (ends 1/11/25).https://www.newegg.com/p/0J6-00Z1-00043If you order from sequremall.com, there is a discount code SQ8 that gives 8% off, but there is a shipping charge. I think it's still less than AliExpress though.https://sequremall.com/products/sequre-ht140-2in1-hot-tweezers-soldering-iron-desoldering-repair-tool-for-smdP.S. Where can I download the manual?

author: W00fer
author_rank: Contributor
timestamp: January 07, 2025, 08:06:57 pm
content: Quote from: edavid on January 06, 2025, 08:20:44 pmManual is on page 1 of this topic, in one of the first posts. Aliexpress pricing is mostly only interesting on sales like Halloween, Christmas, Black Friday and 11.11They won't cover customs duties so the Sequre shop is cheaper (and Newegg).

author: atroz
author_rank: Newbie
timestamp: January 14, 2025, 12:58:51 am
content: Received them today. They work.

author: W00fer
author_rank: Contributor
timestamp: January 15, 2025, 01:15:34 am
content: Ordered the 5.0 C210 irons from Sequre, I might order the 3.0 ones from Yihua later to compare.In the world of soldering SMD the bigger iron the better (only if it doesn't reach it you need smaller) so to wick off the components the 5.0 should do.Changing the two irons is a true pain. The four super small bolts that hold the irons are easily gone from your table.They really need to have a better system for that. A locking ring or something else.

author: GeraYr
author_rank: Contributor
timestamp: February 01, 2025, 06:53:50 am
content: I ordered and received YIHUA C120-3.0D mm from AliExpress "Pro cellphone repair Store" - they are special for tweezers. I have never bought such junk before. One tip is practically unsuitable for work. Almost 27€ for two soldering tips of very questionable quality is too high a price. Sequre (sequremall.com) now you can buy them too, they have expanded their range.

author: W00fer
author_rank: Contributor
timestamp: February 05, 2025, 02:48:10 pm
content: I received the C210 ones from MaAnt from Aliexpress and they are pretty nice quality.Sadly they don't have the wide ones from Sequre or Yihua.See attachment.Cost about 4.50 euro a piece.

author: thikone
author_rank: Contributor
timestamp: February 06, 2025, 11:58:41 am
content: Quote from: W00fer on November 09, 2024, 12:54:08 amSlimQ F150, the one that has UCB-C but also DC5525 jack! It works with tweezers, and (!) it can drive C245 tips in S99 to full power! There is also nice silicon cable that feels like JBC handpiece cable from AliExpress:https://www.aliexpress.com/item/1005005865036528.html

author: W00fer
author_rank: Contributor
timestamp: February 06, 2025, 08:26:39 pm
content: Quote from: thikone on February 06, 2025, 11:58:41 amIt seems that it also outputs 19.5 and not 20?Max 150W Output (19.5V-20V)https://slimq.life/products/150w-usb-c-gan-charger-for-universalIn the PDF it states 20V 7.5A on DChttps://slimq.life/pages/150w-gaming-laptop-charger-specificationsIs that where the voltage compensation is for?Does anyone know what the voltage compensation is? The manual doesn't say anything specific about it.

author: thikone
author_rank: Contributor
timestamp: February 10, 2025, 07:18:49 pm
content: Quote from: W00fer on February 06, 2025, 08:26:39 pmI think they try to not go over 20V because laptops don't like it. Compensation might be for the wires.Regardless, it sure heats up C245 tip of 2.5 Ohm in two seconds or so and my power meter in a wall socket reported 164W for a second.But that is only from DC5525 output of SlimQ F150. USB-C output is only 100W limited and has over current protection.That causes S99 to reboot several times until tip becomes hot enough.You can limit S99 to 70% power in the menu to not do rebooting loop while tip is cold though.But then it is not that fast from cold to hot anymore...

author: Krotow
author_rank: Regular Contributor
timestamp: February 26, 2025, 12:22:26 pm
content: Have these with all 5 advertised tip sets. Though turned out that default thin tips do the job just fine. For me it solved the problem of temperature sensitive SMD component with large-ish flat pins like electrolytic capacitors and diodes and simply larger and unconvenienf for removal component like smd inductors desoldering. Also for SMD component desoldering in thick spaces where hot air flow may cause carnage and mayhem. Pretty amazing thing for a fraction of cost of brand tweezers. If tips would be easier to change too, these tweezers would be perfect.

author: ceut
author_rank: Regular Contributor
timestamp: April 19, 2025, 01:09:57 pm
content: I have received a mail from Sequre: New firmware has came today, v1.04Changelog:"1. Optimize protocol compatibility, menu names, etc.2. OLED Menu: Added "WorkShow" and "LogoDelay" functions.3. Idle menu: Added "Sensitive" function, and the sleep and wake-up sensitivity can be adjusted.4. When entering or exiting the sleep state, a buzzer and screen display progress reminder function are added.5. In the added alarm state, you can also press the buttons to enter the menu to adjust parameters."But, no "Standby" on the HT menu "8.Startheat" for start-up behavior (standby = heat off until moved like my TS-100).They also have updated the user manual on v1.1 for the new add

author: W00fer
author_rank: Contributor
timestamp: April 20, 2025, 02:02:28 am
content: That update took them some time.Better late then never.The sensitivity option is nice.I hope they do a better job at documenting the features in the manual now. As there are quite a few that are not in the manual now.Sadly Sequre Team replied the followingDear customer,Thank you for your contact.You can upgrade from V1.03 to V1.04.But if you upgrade to V1.04, you cannot back to V1.03.This should be made illegal as it's anti consumer.I hope someone is able to reverse engineer this block

author: W00fer
author_rank: Contributor
timestamp: April 28, 2025, 10:02:19 pm
content: In a deliberate way to get the ground wire kit (which is now delivered with all new orders, but not on those when the product launched) I contacted Sequre.They cannot deliver the ground wire kit seperately to distributors (my local electronics store now also sells the HT140 with the kit).So after a bit of back and forth they now will ship it to me for 8.50 USD (shipping costs only). This is not free, but a solution after all.You can argue if it should have been under warranty, since the product can only safely be used if it is grounded.

author: thm_w
author_rank: Super Contributor
timestamp: April 28, 2025, 10:15:34 pm
content: Quote from: W00fer on April 28, 2025, 10:02:19 pmIts just a feature they added, nowhere in the aliexpress listing do I see any claims of "ESD safe". So I don't think its a warranty issue. It is something to watch out for though.Looks like they made a USB A to banana and ring terminal to banana cable. Can try that.

author: W00fer
author_rank: Contributor
timestamp: April 28, 2025, 10:21:32 pm
content: Quote from: thm_w on April 28, 2025, 10:15:34 pmYou forget that they adjusted the Aliexpress listing and under a Youtube review the discussion started that they should deliver a ground wire.In other Sequre Irons they had this feature on a screw on the back. It's the same behavior. Something is missing in revision 1 and is rectified in revision 2. Early adopters are left in the dust.

author: thm_w
author_rank: Super Contributor
timestamp: April 29, 2025, 01:19:09 am
content: Quote from: W00fer on April 28, 2025, 10:21:32 pmThey are free to adjust the listing and add or remove whatever they want.It is fairly normal with chinese products for early adopters to have hardware issues that are fixed in later revisions. Not really the same situation here though.The fact that they responded and improved the product is a hell of a lot better than Aixun.

author: W00fer
author_rank: Contributor
timestamp: May 10, 2025, 08:38:14 pm
content: Quote from: thm_w on April 29, 2025, 01:19:09 amDefine early adopters. It's basically the same Sequre iron they have been selling for years, but now with two heads instead of one.The TS100 and other USB-C soldering irons exist for quite some time already.I received the ground wire kit yesterday from Sequre. The quality and thickness of the wire isn't really high but I hope it will do.

author: cheater
author_rank: Regular Contributor
timestamp: May 14, 2025, 06:54:18 am
content: has anyone who received the HT-140 tested whether the tips are wired correctly, or if they're wired backwards like the S99 described earlier in the thread?if the tips are wired correctly, has anyone been able to reproduce the issues seen by some people where there are ~ several V voltage spikes between the tips? people postulated the voltage spikes are created because of the following points happening at the same time:1. the heating voltage is present on the tip, i.e. the tips are wired backwards2. the tip heating and sensing cannot happen at the same time, so heating has to be turned off while sensing is done.3. the tips use two separate tip controllers which do not synchronize with each other, so they will provide different voltages for heating and will take measurement breaks at different timeshere's what someone had to say about this:Quotethis was posted by pault6533 in the comments to Ian's video, here:to try and reproduce this issue you'd first have to make sure your usb power supply is properly earthed, e.g. with the trick of connecting a usb A cable to a mains protective earth lug.

author: cheater
author_rank: Regular Contributor
timestamp: May 14, 2025, 06:57:04 am
content: Quote from: ceut on November 28, 2024, 09:37:29 amcould you please check if the transients described in my previous reply exist on the voltage between the tips?

author: cheater
author_rank: Regular Contributor
timestamp: May 14, 2025, 02:22:48 pm
content: One more suggestion: maybe someone could try and put a red LED across the tweezers, and see if it lights up. That could be interesting. Red LEDs have the lowest turn-on voltage by the way. So if that poster saw a green LED turn on, then a red one should turn on as well.

author: dermitza
author_rank: Contributor
timestamp: May 31, 2025, 09:41:26 am
content: Quote from: cheater on May 14, 2025, 06:57:04 amI did some measurements on the one i got recently - note the below were when the unit was powered by a powerbank @12V. Both tips are grounded, the voltage is only present when the unit is active (heating), FW: 1.04Between GND and tip(s):Between the two tips: