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whiskers on components with pure tin termination finishes. The actual requirement for the level of mitigation required or
whether pure tin terminations may be used, per GEIA-STD-0005-2, is determined on a product-by-product basis with
specific requirements contained within program documentation and will fall into one of the risk levels listed in the
following table (from GEIA-STD-0005-2). If the risk level is not specifically identified by the program, the risk level is
assumed to be 2B.
Risk
Level
Documentation of
Tin Use Detection and Control Mitigation Risk Analysis
Level 1 Supplier: General
information on
finishes used.
None None None
Level 2A Supplier: General
information on
finishes used.
Customer: List of any
applications where tin
is not allowed.
None
None. However, if
mitigation methods
were assumed for
the purposes of
analyses, the
supplier shall report
those assumed
mitigations.
At the process level: analyses
showing application tolerance to
whiskers, OR analyses of tests to
demonstrate propensity of whiskering,
OR field data analysis demonstrating
requirements will be met even if no
mitigations are applied.
Level 2B Supplier: List of
families of tin-finished
piece parts and
categories of
applications where
they would like to use
tin. Customer: List of
any applications
where tin is not
allowed.
It is recommended that
the supplier and
customer develop a
sampling plan for
confirming materials
received.
It is recommended
that at least two
mitigation methods
be employed.
At the family level: analyses showing
application tolerance to whiskers, OR
analyses of tests to demonstrate
propensity of whiskering, OR field
data analysis demonstrating
requirements will be met. Some
individual uses may need to be
analyzed at the instance level.
Level 2C Supplier: List of all
instances of pure tin.
Customer: List of any
applications where tin
is not allowed.
A sample monitoring
plan is required but its
specifics are left to an
agreement between
supplier and customer.
For critical piece parts,
assemblies or systems,
the plan should include
sampling at least one
part per lot of all piece
parts not approved for
tin.
At least two
mitigation methods
are required.
At the instance level: analyses
showing application tolerance to
whiskers, OR analyses of tests to
demonstrate propensity of whiskering,
OR field data analysis demonstrating
requirements will be met.
Level 3 Supplier:
Documentation of lot
screen results.
At least one sample per
lot of all items containing
metallic finishes must be
tested by a method
agreed to by the
customer and supplier.
None. Not
applicable. No tin is
to be used, so no
mitigation is
required.
None. Not applicable. No tin is to be
used so no risk analysis is required.
162.3 Sampling Requirements
Honeywell reserves the right to sample any parts to ensure processing complies with the requirements of this
specification.
Revisions: New SPOC incorporating Aerospace lead free requirements.
Aerospace
Supplemental Purchase Order Conditions (SPOC) Manual
UNCONTROLLED IN HARDCOPY
Revision H Effective Date: 15 January 2009 37
*Revised / **Added
SPOC 163 – Restrictions for use of Mercury and or Mercury Containing Components *
Products shall contain no metallic mercury and must be free from contamination by mercury. The Supplier shall not use
mercury, mercury components or mercury bearing instruments or equipment that cause the contamination during the
manufacture, service, assembly, or test of materials.
163.1 Statement that Order is Free of Mercury*
The Supplier shall send a signed statement with the shipment that tells that the items are free of mercury and
free from mercury contamination, the statement must include:
• The Contract Number
• The National Stock Number (NSN), as applicable
• The Manufacturer’s Code (CAGE) and Part Number or the Specification or Drawing Number
• The date of shipment and the quantity shipped
This paragraph must be notated as below, or words that convey the same meaning:
“The undersigned certifies that the items shipped conform to the requirements of the Purchase Order. The items are
free from mercury contamination. Mercury-bearing instruments and equipment which can cause mercury contamination
　
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