Manufacturer of soldering tips · Dongguan, China
Applications · selection by joint
A soldering tip application is defined by three things: the thermal mass of the joint, the clearance around it, and the contact time the process allows. We group 400+ geometries into six jobs so you can start from the board, not from our part numbers.
How we classify a joint
Most tip catalogues are sorted by supplier part number. That is useful once you already know the part, and useless when you are looking at a joint that has never soldered well. A 1.2 mm chisel and a 1.2 mm conical tip fit the same iron, but they behave completely differently: the chisel stores heat and wets a pad, the conical reaches a single pin without touching its neighbour.
Because we grind the profiles ourselves, we can describe a geometry in dimensions rather than in marketing terms. Every family below is tied to a dimension set we issue for the exact part number, and to the platform it fits. If a joint falls between two of them, we grind a third.
Six application areas
Each area below is a distinct heat-delivery problem. The geometry tags are the shapes our customers order most often for that joint.
01 / Hand soldering
Through-hole pins, SMD touch-up and field repair. A 1.2–3.0 mm chisel carries enough stored heat for a ground pad, a 0.5–1.0 mm conical reaches a single pin, and a knife edge handles drag work on fine-pitch rows.
02 / Wire harness
Crimp lugs, splices and terminal blocks pull heat away from the tip faster than a small iron can replace it. A wide bevel or a 4–6 mm chisel keeps the joint above liquidus without raising the setpoint, so the operator stays inside a 3-second cycle.
03 / Battery
Nickel tabs, copper busbars and cell interconnects are large heat sinks. Continuous iron contact either stalls or overheats the cell. Slotted hot-bar thermodes and wide blades deliver a controlled pulse across the whole joint instead of a point contact.
04 / Fine pitch
At 0.3–0.5 mm pitch there is no room for a straight shank above the pad. Bent conical and bent chisel tips reach the land without touching the connector housing. Shanks are ground to ±0.05 mm so the tip seats repeatably in the heater.
05 / Enamel wire
Hot-bar thermodes strip the enamel and bond the wire in one step, removing both the pre-tinning bath and the separate stripping station. V, U and grooved faces are ground for wire from 0.05 to 0.4 mm, with the working face lapped flat for even pressure.
06 / Sensors
Thin leads and heat-sensitive mouldings need low mass and fast recovery. A 0.5–1.0 mm conical or a fine cartridge brings the joint to liquidus in under 3 seconds and limits how much heat travels into the sensor body.
Selection table
A plain table, not a product image: the fastest way to check whether your joint is one we already tool for. Dimensions for each geometry are published on the product pages.
| Joint | Limiting factor | Geometry we start from | Platform family | Target contact |
|---|---|---|---|---|
| Through-hole pin / SMD pad | Wetting area, adjacent pads | 900M-T-B chisel 1.2–3.0 mm | Hand soldering, 900M / T18 / T12 | 1–3 s |
| Wire harness lug / splice | Thermal mass of the lug | Bevel 4–6 mm, wide chisel | Hand & high-frequency, 900M / 911G | <3 s |
| Nickel tab / copper busbar | Heat sinking into the cell | Slotted thermode, wide blade | Hot-bar, high-frequency | Pulse, 0.5–2 s |
| FPC connector, 0.3–0.5 mm pitch | Clearance above the pad | Bent conical / bent chisel | Cartridge, T12 / T18 / robotic | 1–2 s |
| Enamel wire, 0.05–0.4 mm | Insulation removal + bond | V / U / grooved thermode | Hot-bar thermodes | Pulse, 0.3–1.5 s |
| Sensor lead / micro connector | Heat spread into the housing | Micro conical 0.5–1.0 mm, cartridge | UNIX / Apollo robotic | <3 s |
Industries served
We supply replacement tips and thermodes to production lines and to the distributors who service them. Customer names are not listed here; references can be discussed under NDA.
High-mix boards, frequent changeover and rework stations that need many geometries from one supplier. Breadth of coverage matters more than any single part.
Control modules, sensor harnesses and connectors where joint repeatability is documented and tip life is tracked per batch.
Cell interconnects, BMS boards and busbar joints that need pulse heat and a flat, lapped working face.
High-volume hand and robotic soldering of harnesses, terminals and controller boards, where MOQ and dispatch time drive the order.
Smaller series, older iron platforms, and replacement tips for machines whose original consumables are no longer stocked.
Fine-pitch FPC and delicate leads near heat-sensitive optics, where clearance and low tip mass decide the process.
From joint to tip
A photo of the pad or lug, the iron or machine model, and the pitch or clearance that constrains the shank. A drawing is welcome but not required.
We match the joint against 400+ published geometries and reply with the dimensions, the platform fit and the plating build-up for each candidate.
Samples are turned, ground and plated on the production line, not pulled from a display box. Minimum order is 20 pieces per geometry.
You solder-test on the real assembly. Once approved, the dimension report and plating specification are fixed for repeat orders.
Questions we are asked
For drag soldering on fine-pitch rows, a knife or bevel tip carries a small solder reservoir along the edge and leaves a fillet that can be inspected visually. A chisel holds more heat but bridges adjacent pads more easily below 0.5 mm pitch. We normally sample both geometries so the joint can be tested on the actual board.
No. A harness lug needs a large thermal mass and a wide working face; a 0.3 mm pitch FPC pad needs a low-mass tip and a bent shank for clearance. One geometry cannot deliver both without either overheating the flexible circuit or starving the lug of heat.
The iron or machine model, pad or pin dimensions, pitch, clearance around the joint, the materials being joined, the target contact time and the solder alloy. A photograph of the joint and of the iron socket is enough to start; we reply with a shortlist of published geometries and their dimensions.
Yes. Custom geometries are ground on the same production line as standard parts, with samples in 5 working days and a minimum order of 20 pieces. A 2D drawing, a sample part or a joint photograph is sufficient for evaluation, and we can sign an NDA before drawings are exchanged.
No. XANJO makes independent replacement parts. Brand and model names such as Weller, Hakko, UNIX and Apollo are used only to describe which machine a tip fits, and should be written as “for Weller WSP80” or “WSP80-compatible”. XANJO is not affiliated with, endorsed by or sponsored by any original equipment manufacturer.
A photo of the pad and the iron model is enough to start. We reply with a geometry shortlist and dimensions within one working day — no obligation to order.