Pure Technologies Alpha-Lo Tin Meets International Standards for RoHS and Halogens As Well As Independant Impurities Testing
Alloys
Jerald (Jerry) Cohn, co-founder of Pure Technologies was born in Columbus, Georgia USA and a graduate of the Georgia Institute of Technology.
Contact:  Jerry Cohn, President
Email:    jerry@puretechnologies.com
Direct Tel:   +1-404-964-3791
USA Fax:   (877) 738-8263
International Fax:    +1-973-273-2132
Tin
Manufacturers and Suppliers of ALPHA-Lo® Low Alpha Materials For Over 16 Years
Low Alpha Tin, Ultra Low Alpha Tin, and Super Ultra Low Alpha Tin
Tin (Sn) ---- Pure Technologies sells tin in INGOTS,
PELLETS/SLUGS, FOIL/FLAKE, and in a monoxide powder
(SnO)

Pure Technologies has increased production volumes of very
pure super ultra-low alpha emitting tin, with purity of better than
99.999% (>5N) and alpha emission rates of less than 0.001
cph/cm 2   (alpha disintegrations or counts per hour per square
centimeter).  Jerry Cohn, President of Pure Technologies, said
“Our customers require that the reliability and dependability of
their products be of the highest level and meet the stringent
specifications of their customers. The new paradigms in CSP
where often dies stack and combine operations require the
elimination of soft errors from assembly materials. Our
worldwide customers consist of solder companies,
electroplating solution manufacturers, OEMs, packaging firms
and manufacturers/assemblers of substrates and
semiconductors.” 
Pure Technologies has been supplying low, ultra-low and
super ultra-low alpha tin, lead-free, lead and lead/tin metals
and alloys to the industry for more than 16 years and is able
to produce large, homogeneous batches which are tested
repeatedly to insure each batch meets the impurity
specification and the required alpha emission rate and, even
more importantly, that the batch is at secular equilibrium
and will never rise in alpha emission rates over time. It is
necessary to make sure that any small amount of lead in tin
or other materials is not still decaying and producing alpha
emissions. Secular equilibrium is a condition where the
decay of Lead 210 (Pb 210) is equal or less than the rate of
decay of Polonium 210 (Po 210 ) (see the Decay Chart of U
238 ). This is important as it is relatively easy to reduce
temporarily the alpha emission rate of materials, but then
over time these materials can rise in alpha emission rates
and cause product liability and harm company reputations.

Further questions can be addressed to Mr. Cohn at
jerry@puretechnologies.com.
Click Images To Enlarge
Product
Alpha Emitter Quality cph/cm2 at secular equilibrium
Shape / Form
Packaging
Tin (Sn)
0.02
0.01
0.005
0.002
0.001
Plastic bags in vacuum sealed in polyethylene plastic bags in argon gas 
Name
Company
Phone
Email:
I Am Interested In The Following Paper(s)
Lead-Free Does Not Mean Alpha Particle Free
Measuring Alpha Particles
Product Literature
Additional Comments

Information Request
Name
E-mail
Phone
Tin Monoxide (SnO)
Tinflake (Foil) 
Pellets:
D: 10.8 mm (± 5/16 in.)
L: 16.5 mm (± 5/8in.)

Ingots:
D: 41 mm (±1.5 in.)
L: 190 mm (±7.5 in.)
    and also
    20mm x 20mm x 190mm
    and also per customer spec

Anodes:  any shape/size
Purities
4N (99.99%)

and

5N (99.999%)

and

>5N per customer   
  specification

0.02 to <0.001
Monoxide Powder

Foil flakes
Plastic bottles in argon gas
4N (99.99%) 
5N (99.999%)
>5N per customer
   specification
Other Materials
Nickel
Copper
Low Alpha Lead
Ultra-Low Alpha Lead-Free Solder
Lead-Free Solder
Low Alpha Tin
Ultra-Low Alpha Tin
Super Ultra-Low Alpha Tin
Lead Alloys
Lead-Free Alloys
Low Alpha Tin Alloys
Ultra-Low Alpha Tin Alloys
SAC305
177 US Hwy 1: No. 306     Tequesta, FL 33469-2737    Email: jerry@puretechnologies.com
Phone. +1-404-964-3791    Fax: +1-877-738-8263     International Fax: +1-973-273-2132