IPC 1757 Process Chemical Standard
IPC 1757 Status
• Committee has completed work on the proposed standard.
• Intention is that this standard would be used to report the
use of certain process chemicals where there is a regulatory
requirement regarding the use of these chemicals.
Examples are:
– Ozone Depleting Substances
– PFOS/PFOA
– Certain Glycol Ethers
• This standard is not intended for use to obtain confidential or
proprietary information regarding suppliers’ processes.
• Proposed standard includes a flowchart to aid users in
determining whether to report under IPC-1752 or IPC-1757.
If the use of a chemical is reportable under both standards,
only the IPC-1752 standard should be used for reporting.
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Decision Flowchart for Reporting Using IPC-1757
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Example 1 - Plating solutions - Metal additive
• Chemicals used in manufacturing that come into physical contact and
become a part of the finished product.
• Process Description: An electroless plating formulation of a non-RoHS
metal contains small amounts of a RoHS Metal of Concern (RM) that is
used as a bath stabilizer. RM can co-deposit into the electroless plating
coating and result in a homogenous material that may not meet the EU
RoHS Directive.
• Product content (IPC 1752): RM = 100 ppm regulatory limitation (e.g.,
EU RoHS Directive 2002/95/EC and/or JIG 101A)
• Process chemical content (IPC 1757): RM = present in the process
chemical but may not be present in the product in significant quantities.
(No known legislation banning, restricting, or requiring labeling for RM
usage in the process.)
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Scenario 1 Plating Bath RM concentration is <1000 ppm
and RM in coating is <100 ppm.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Scenario 2 Plating Bath RM concentration is <1000 ppm
and RM in coating is >100 ppm.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Scenario 3 Plating Bath RM concentration is >1000 ppm
and RM in coating is <100 ppm.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Scenario 4 Plating Bath RM concentration is >1000 ppm
and RM in coating is >100 ppm.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Example 2 - Photolithography resist solution – Organic
additive (OA):
• Chemicals used in manufacturing that may touch the product, but are
removed and do not become a part of the product.
• Process Description: An OA is added as a surfactant in a
photolithographic resist solution (photoresist). An OA can also be added
to a photoresist as a photo-amplification chemical, or to special
antireflective resists as a reflecting agent. Photoresists are usually
removed from the product in subsequent process steps and should
therefore not be present in the final product.
• Product content (IPC 1752): OA = 1000 ppm regulatory limitation (e.g.,
EU Directive and/or JIG 2.0)
• Process chemical content (IPC 1757): OA = present in the process
chemical but should not be present in the product. (EU and US
regulations exist for some OA chemicals related to this type of use, but
exemptions for some uses such as semiconductor photoresists exist)
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Scenario 1 Photoresist OA concentration is <1000 ppm and
OA does not exist in the final product.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Scenario 2 Photoresist OA concentration is >1000 ppm and
OA does not exist in the final product.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Example 3 - Brominated Compound (BC)
• Chemicals used in manufacturing that become part of a polymer matrix
and therefore no longer exist as a chemical of concern.
• A brominated compound is reacted with an epoxy resin to form a 20%
(200,000 ppm) by weight brominated material in a printed circuit board
(PCB) base material.
• Product content (IPC 1752): BC = 1000 ppm (Joint Industry Guide [JIG101B]) (i.e., “A” = 1000 ppm in the flowchart)
• Process chemical content (IPC 1757): BC = 1000 ppm (i.e., “B” = 1000
ppm in the flowchart) (No known legislation banning, restricting, or
requiring labeling for BC usage in the process.)
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Scenario 1 Process reactant contains >1000 ppm BC and
<1000 ppm BC is found in PCB base material.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Scenario 2 Reactant contains >1000 ppm BC and >1000
ppm BC is found in PCB base material.
Start
Note1: Threshold concentration limit in Product = A
If the product is not allowed to have detectable concentrations of
the substance, then A = 0 or A = Analytical Detection Limit.
1. Is
Substance
Used In
Process?
No
Note 2: Threshold concentration limit in Process = B
If the product is not allowed to contact the substance,
then B = 0 or B = Not Intentionally Used.
Yes
2. Does
Substance
Contact
Product?
A. IPC 1752 – Not Reportable
IPC 1757 – Not Reportable
No
B. IPC 1752 – Reportable
IPC 1757 – Not Reportable
Yes
3. Is
Substance
Concentration in
Process
Chemical
≥B?
Yes
No
Yes
No
5. Is
Substance
Concentration
In Product in
≥A ?
4. Is
Substance
Concentration
In Product in
≥A ?
C. IPC 1752 – Not Reportable
IPC 1757 – Reportable
Yes
No
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Next Steps
• Proposed standard is being circulated for comments (60
days – comment period closes mid-April).
• Comments received are reviewed by committee (1 to 2
months). Comments will either be rejected or approved and
incorporated into the proposed standard.
• Proposed standard will then be circulated again for a 30-day
comment period.
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