Match the loaded spool, holder and wire path to the bonder
A wire-bonder spool assembly supports the bonding-wire package and supplies wire or ribbon to the bonding head. The empty spool, its holder or spindle, the payout mechanism and the guides have separate interfaces. Order the required scope against the bonder model and the wire supplier’s spool drawing.
Spool holders and payout assemblies for semiconductor wire bonders, including their spool mounting, supplied drive or braking arrangement and wire-guide interfaces. Empty bonding-wire bobbins are component supplies. Complete wire bonders are covered on page 8639; robotic MIG/MAG bulk-wire feeding on page 3192 and welding wire feeders on page 4742.
CNFX editorial research · Sources checked October 19, 2026 · 3 sources
Order the holder against the spool and bonder model
TPT’s H71–H72 sheet lists H71-1 as motorized for a 2 × 1 inch spool and 17.5–75 µm wire; H72-1 is manual for a ½ × 1 inch spool and the same stated wire range. Other rows identify ribbon and HB05/HB100 holders. Keep each model’s scope intact. [1]
Obtain the spool drawing, including flange diameter, barrel diameter, bore, winding width and overall width. Check the shaft, retention method, mounting orientation and clearance with the loaded package installed.
For ribbon, state both width and thickness and obtain the holder/guide specification for that ribbon. A wire-diameter range does not define ribbon capacity.
Identify which supplied parts remain on the bonder during changeover. Check access to the spool retainer and the wire guide without disturbing the qualified bonding-head setup.
02
Accept payout with the actual wire package and bonding cycle
Choose the manual or powered payout arrangement with the bonder builder. Specify any brake, drive, guide and sensor functions in the supplied assembly; verify their adjustment and behaviour as a system.
Define the required payout-tension limits at a named point in the wire path, with a measurement method that is suitable for the wire. Keep payout tension separate from the force applied by the bonding tool during bonding.
Run the agreed start/stop and bonding sequence with a representative loaded spool. Repeat at the agreed low-fill condition and inspect for slack loops, snagging, wire damage and interruptions in delivery. Record spool identity, wire size, guide routing and machine settings.
For powered assemblies, document the power, command and status interfaces, if provided, and the response to an empty spool, feed interruption or loss of drive. Agree fault behaviour with the host-machine supplier.
03
Approve the empty bobbin as a component supply
ONEREEL’s ORBWB-1 page offers empty bonding-wire bobbins and describes anodized, conductive and nickel-plated aluminium spool options. Confirm the exact drawing and finish for the ordered bobbin. [2]
Specify the barrel and flange surfaces that can contact the wire, including edge condition, cleanliness and permitted defects. For a coated spool, request the coating identity and the inspection method for the required surfaces.
State the geometric characteristic being controlled, its datum and measurement method. Distinguish flange runout, bore fit and barrel alignment instead of using a single undefined concentricity requirement.
If electrical dissipation is required, specify the measurement quantity, test conditions and the installed contact path. A conductive finish on a loose bobbin does not establish the complete workstation’s ESD performance.
04
Keep spool orientation and end restraint in the changeover procedure
TANAKA’s gold and PCC wire handling instructions call for checking mounting orientation, avoiding wire contact, securing the end with terminal tape and upright storage in the case. Use the instructions for the actual wire package. [3]
Include wire loading, guide threading, end restraint and removal in the approved changeover procedure. Define where the operator may hold the package and how the removed spool is protected.
Obtain storage and exposure limits from the wire supplier as well as limits for the holder and drive. Preserve the wire lot and package identity with the production setup.
05
Spool, spindle and payout-control responsibilities
This functional reference separates the wire package from the bonder-mounted hardware. The actual assembly can use manual or powered payout, with braking and sensing as specified in its design.
Part or function
Define for the assembly
Check
Spool hub / barrel
Wire-package winding surface and bore.
Drawing, bore fit, surface condition and loaded capacity.
Spool flanges
Containment, edges and winding clearance.
Geometry, runout and damage/defect criteria.
Spindle shaft / holder
Spool support, retention and machine mount.
Loaded fit, orientation and free payout as designed.
Tension brake / payout drive, as fitted
Resistance or powered assistance and adjustment.
Measured payout through the specified cycle.
Guide path and interfaces
Wire/ribbon routing from holder toward the bonding head.
Guide compatibility, clearance and loaded threading trial.
06
Define package dimensions and the payout test together
Use the actual wire or ribbon package, holder configuration and bonder sequence as the acceptance setup. State inspection methods for material, finish and electrical requirements.
Field
Define in the order
Acceptance evidence
Wire spool capacity (m)
Wire/ribbon size, winding package and usable length.
Wire-supplier package specification and fit.
Wire diameter range (mm or µm)
Material and diameter; ribbon width/thickness separately.
Holder/guide compatibility for the actual package.
Spool flange diameter (mm)
Nominal dimension, tolerance and clearance.
Controlled drawing and loaded fit.
Spool traverse / winding width (mm)
Usable winding width and overall package width.
Spool drawing and retention clearance.
Wire payout tension (cN)
Test point, cycle, fill state and acceptable variation.
Measurement record, distinct from bonding force.
Spool weight (g)
Empty and loaded spool; holder scope separately.
Mass and holder/drive loading capability.
Material grade
Barrel/flanges, shaft and any coatings.
Specified material and finish records.
Surface roughness (µm Ra)
Wire-contact surfaces, method and acceptance limit.
Surface inspection including edges and cleanliness.
Concentricity / runout (mm)
Feature, datum and actual geometric characteristic.
Defined inspection result rather than an unqualified value.
Operating temperature (°C)
Holder/drive ambient and wire-package exposure limits.
Matched component and wire-supplier requirements.
Humidity range (% RH)
Operating/storage exposure and condensation restrictions.
Wire/assembly handling instructions.
ESD requirement (stated quantity)
Surface/path resistance or other required quantity and test conditions.
Specified test plus installed-contact assessment.
Bonder interface and payout mode
Mounting, retention, manual/powered scope and guides.
Model-specific fit drawing and payout trial.
07
Send the spool drawing with the wire-bonder interface
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Discuss the bobbin or complete payout scope with the supplier
Provide the spool drawing, wire specification and bonder interface. For an empty-bobbin order, agree material, finish and dimensional inspection; for a holder or powered assembly, include the loaded payout trial and host interfaces.
Ningbo ONEREEL Machine Co., Ltd.
TBC
ONEREEL lists ORBWB-1 empty bonding-wire bobbins with aluminium spool finish options. Request the controlled bobbin drawing and finish/inspection requirements for the wire package.
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
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Compiled and source-reviewed by the CNFX editorial team.
The listed supplier offers empty bonding-wire bobbins. Confirm the quoted part and inspection scope; coordinate bonder-mounted holder, drive and process integration with the relevant equipment supplier. How we source and review
· Page last updated 19 October 2026
Buyer questions
Can the same TPT holder be selected for every spool size?
Match the model row to spool size, wire/ribbon and bonder compatibility. [1]
Does an empty-bobbin offer include the bonder-mounted payout drive?
Specify the required bobbin, holder and drive scope separately. [2][1]
Is wire payout tension the bonding tool force?
Specify and measure payout tension at the wire path; bond-tool force belongs to the bonding process.
What should the spool changeover procedure preserve?
Follow the package-specific orientation, wire handling, end restraint and storage instructions. [3]
Sources and what still needs a direct check
Sources checked 2026-10-19. TPT provides model-specific holder examples, ONEREEL an empty-bobbin offer, and TANAKA package-handling instructions. Confirm the delivered parts and current machine/wire documentation.
