A microelectronic device has bump bond structures on input/output (I/O) pads. The bump bond structures include copper-containing pillars, a barrier layer including cobalt and zinc on the copper-containing pillars, and tin-containing solder on the barrier layer. The barrier layer includes 0.1 weight percent to 50 weight percent cobalt and an amount of zinc equivalent to a layer of pure zinc 0.05 microns to 0.5 microns thick. A lead frame has a copper-containing member with a similar barrier layer in an area for a solder joint. Methods of forming the microelectronic device are disclosed.

The high-efficiency soldering apparatus for a winding head of a flat-wire motor includes a support base, a solder tray, a solder spot isolation and limit plate, a shaft lever and a movable tray. The solder tray is provided at the center of the support base. The solder spot isolation and limit plate is provided on the solder tray. The shaft lever is provided on the support base. The movable tray is provided on the shaft lever. The movable tray is located above the solder tray. The movable tray moves vertically along the shaft lever. A stator is placed at the center of the movable tray, and a winding head of the stator extends below the movable tray.

A microelectronic device has bump bond structures on input/output (I/O) pads. The bump bond structures include copper-containing pillars, a barrier layer including cobalt and zinc on the copper-containing pillars, and tin-containing solder on the barrier layer. The barrier layer includes 0.1 weight percent to 50 weight percent cobalt and an amount of zinc equivalent to a layer of pure zinc 0.05 microns to 0.5 microns thick. A lead frame has a copper-containing member with a similar barrier layer in an area for a solder joint. Methods of forming the microelectronic device are disclosed.

Systems and methods for applying solder to a pin. The methods comprising: disposing a given amount of solder on a non-wetable surface of a planar substrate; aligning the pin with the solder disposed on the non-wetable surface of the planar substrate; inserting the pin in the solder; and performing a reflow process to cause the solder to transfer from the planar substrate to the pin.

To provide a soldering method and a soldering apparatus which are capable of preheating a mask without degrading throughput. Provided is a soldering method including preheating a mask on which a substrate is not placed, placing the substrate on the preheated mask, and bringing at least a part of the substrate placed on the preheated mask into contact with molten solder and thus soldering the substrate.

A soldering apparatus 100 including: a chamber 120 configured to contain solder and include an opening 122 configured to discharge the solder in a bottom surface or a side surface; a pump 140 configured to transport the solder to the chamber 120; and an inner bath 160 configured to communicate with the opening 120 and perform soldering using the solder fed through the opening 120.

A semiconductor fabrication apparatus has a transfer plate having a plurality of transfer pins to transfer a flux onto a plurality of lands on a semiconductor substrate, a holder movable with the transfer plate, to hold the transfer plate, a positioning mechanism to perform positioning of the holder so that the plurality of lands and the respective transfer pins contact each other; and a pitch adjuster to adjust a pitch of at least part of the plurality of transfer pins.

A soldering apparatus 100 including: a chamber 120 configured to contain solder and include an opening 122 configured to discharge the solder in a bottom surface or a side surface; a pump 140 configured to transport the solder to the chamber 120; and an inner bath 160 configured to communicate with the opening 120 and perform soldering using the solder fed through the opening 120.

To provide a soldering method and a soldering apparatus which are capable of preheating a mask without degrading throughput.

Provided is a soldering method including preheating a mask on which a substrate is not placed, placing the substrate on the preheated mask, and bringing at least a part of the substrate placed on the preheated mask into contact with molten solder and thus soldering the substrate.

A method of pretinning a guidewire core made of shape memory alloy and having an elongate axis, comprising: placing a ball of solder in a pocket in a soldering block; melting the ball of solder; holding a guidewire core over the ball of solder; lowering the guidewire core into the ball of solder; removing the guidewire from the ball of solder.