Preform Selection Criteria

Alpha has a great deal of experience developing specialty shapes.  Please contact your sales representative to learn more about how we can support your unique preform shape requirements. Alpha also offers an assortment of bulk packaging options.  Argon packaging is available for specific alloys.

ALPHA® Exactalloy® Preforms Selection Criteria


Alloy:  Selection is based on melting point and compatibility with substrate materials. Exactalloy® preforms are produced in a large variety of alloys to meet your specific application requirements.

 

Size/Shape:  Custom designed sizes and shapes provide exact solder volume for specific applications, aiding the assembly process.

 

Flux Type:  Based on the specific materials to be soldered, the heat application method and the reliability requirements of the end product, an appropriate flux can be integrated with an Exactalloy® preform.  Color-coding in flux is available for easy product identification on the manufacturing floor.  Precisely controlled low level flux deposition is also available. 

 

Prototypes and Specialty Shapes:  Alpha's rapid prototyping ability enhances time to market while minimizing tooling expenses needed to verify acceptable preform performance.

 Solder preform available sizes

Flexible Packaging Options:  Packaging options are available to meet a variety of applications and assembly equipment requirements and are designed to maximize customer process efficiency.  

 

solder preform packaging    solder preform tray

COMMON ALLOYS BY PRODUCT TYPE

Assembly

Lamination over Copper

Solder Ribbon

substrATE attach

Die attach

common Low Temp Fuse Alloys (95-150°C)

SnAg

SnPb

SnAg

SnPb

SnAg

SnPb

SnAg

SnPb

SnPb

SnPbCd

InAg

SnAgCu

SnPbAg

 SnAgCu

SnPbAg

SnAgCu

SnPbAg

SnAgCu

SnPbAg

SnPbAg

SnPbInCd

SnBi

SnBi

PbInAg

SnSb

SnSbAg

PbInAg

PbInAg

SnPbIn

SnBiAg

SnBiAg

MAXREL™

SnSb

PbAg

PbAg

SnPbBi

SnBiIn

MAXREL™

SnIn

SnInCd



Tape and Reel solder preform image

For Assembly Applications: High speed preform placement can be implemented using preforms packaged in tape and reel.  

Alpha also offers an assortment of bulk packaging options.  Argon packaging is available for specific alloys

solder preform packagingsolder preform tray

Flexible Packaging Options:  Packaging options are available to meet a variety of applications and assembly equipment requirements and are designed to maximize customer process efficiency.

 

ALPHA® Flux Coated Preforms provide advantages for LED assemblies for multiple areas such as void control, flux control, LED Package tilt.

 
  
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