Materials Declaration Report: A3972SB-T

Part Number: A3972SB-T
Package Code: B
Lead Count: 24
Plating: Sn
Package Weight: 1.7789 g
MSL Rating: TBD
Lead-free EU RoHS Compliant China RoHS Compliant


Composition Details

Leadframe
Substances weight % of material % of package
Iron Fe 0.01344720 g 2.35000 % 0.75593 %
Lead Pb 0.00000469 g 0.00082 % 0.00026 %
Phosphorus (wht/yellow) P 0.00046922 g 0.08200 % 0.02638 %
Zinc (metal) Zn 0.00100139 g 0.17500 % 0.05629 %
Copper Cu 0.55729870 g 97.39218 % 31.32827 %
Total: 0.57222110 g  
Encapsulation
Substances weight % of material % of package
Aluminum Al 0.00066804 g 0.05700 % 0.03755 %
Epoxy cresol novolac resin 0.22068760 g 18.83000 % 12.40585 %
Silica, vitreous Si 0.95064440 g 81.11300 % 53.44001 %
Total: 1.17200000 g  
Die
Substances weight % of material % of package
Aluminum Al 0.00002800 g 0.40000 % 0.00157 %
Silicon Si 0.00697200 g 99.60000 % 0.39193 %
Total: 0.00700000 g  
Die Attach Adhesive
Substances weight % of material % of package
Silver Ag 0.00098400 g 82.00000 % 0.05532 %
Polyimide Pi 0.00021600 g 18.00000 % 0.01214 %
Total: 0.00120000 g  
Lead Finish
Substances weight % of material % of package
Misc. 0.00000247 g 0.01000 % 0.00014 %
Tin Sn 0.02469753 g 99.99000 % 1.38836 %
Total: 0.02470000 g  
Bonding Wire
Substances weight % of material % of package
Silver Ag 0.00000005 g 0.00290 % 0.00000 %
Gold Au 0.00177878 g 99.99323 % 0.09999 %
Misc. 0.00000002 g 0.00097 % 0.00000 %
Copper Cu 0.00000005 g 0.00290 % 0.00000 %
Total: 0.00177890 g  

For information on "Green" molding compounds, please contact your local sales representative.





RoHS and other substances of concern

Bonding Wire
Substances 0.00177890 g ppm w/avg ppm
Beryllium Be   = 3 ppm = 0.003 ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 0.003 ppm < 0.000 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 0.003 ppm < 0.000 ppm
Cadmium Cd   < 2 ppm < 0.002 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 0.003 ppm < 0.000 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 0.003 ppm < 0.000 ppm
Hexavalent Chromium Cr+6   < 2 ppm < 0.002 ppm
Lead Pb   < 2 ppm < 0.002 ppm
Mercury Hg   < 2 ppm < 0.002 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 0.005 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 0.005 ppm
Die
Substances 0.00700000 g ppm w/avg ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 50 ppm < 0.197 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 50 ppm < 0.197 ppm
Cadmium Cd   < 2 ppm < 0.008 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 50 ppm < 0.197 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 50 ppm < 0.197 ppm
Hexavalent Chromium Cr+6   < 2 ppm < 0.008 ppm
Lead Pb   < 2 ppm < 0.008 ppm
Mercury Hg   < 2 ppm < 0.008 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 0.020 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 0.020 ppm
Die Attach Adhesive
Substances 0.00120000 g ppm w/avg ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 50 ppm < 0.034 ppm
Bromine Br   < 50 ppm < 0.034 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 50 ppm < 0.034 ppm
Cadmium Cd   < 2 ppm < 0.001 ppm
Chlorine Cl   < 50 ppm < 0.034 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 50 ppm < 0.034 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 50 ppm < 0.034 ppm
Flourine Fl   < 50 ppm < 0.034 ppm
Hexavalent Chromium Cr+6   < 2 ppm < 0.001 ppm
Iodine I   < 50 ppm < 0.034 ppm
Lead Pb   < 2 ppm < 0.001 ppm
Mercury Hg   < 2 ppm < 0.001 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 0.003 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 0.003 ppm
Encapsulation
Substances 1.17200000 g ppm w/avg ppm
Antimony Trioxide Sb2O3   < 2 ppm < 1.318 ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 50 ppm < 32.942 ppm
Bromine Br   < 50 ppm < 32.942 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 50 ppm < 32.942 ppm
Cadmium Cd   < 2 ppm < 1.318 ppm
Chlorine Cl   = 62.5 ppm = 41.177 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 50 ppm < 32.942 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 50 ppm < 32.942 ppm
Hexavalent Chromium Cr+6   < 2 ppm < 1.318 ppm
Lead Pb   < 2 ppm < 1.318 ppm
Mercury Hg   < 2 ppm < 1.318 ppm
PFOA PFOA   < 10 ppm < 6.588 ppm
PFOS PFOS   < 10 ppm < 6.588 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 3.294 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 3.294 ppm
Lead Finish
Substances 0.02470000 g ppm w/avg ppm
Antimony Trioxide Sb2O3   < 2 ppm < 0.028 ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 50 ppm < 0.694 ppm
Bromine Br   < 50 ppm < 0.694 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 50 ppm < 0.694 ppm
Cadmium Cd   < 2 ppm < 0.028 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 50 ppm < 0.694 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 50 ppm < 0.694 ppm
Hexavalent Chromium Cr+6   < 0.1 ppm < 0.001 ppm
Lead Pb   = 15 ppm = 0.208 ppm
Mercury Hg   < 2 ppm < 0.028 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 0.069 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 0.069 ppm
Leadframe
Substances 0.57222110 g ppm w/avg ppm
Bis (2-ethylhexyl) Phthalate CAS 117-81-7 DEHP   < 50 ppm < 16.084 ppm
Bromine Br   < 5 ppm < 1.608 ppm
Butyl benzyl Phthalate CAS 85-68-7 BBP   < 50 ppm < 16.084 ppm
Cadmium Cd   < 2 ppm < 0.643 ppm
Chlorine Cl   = 6 ppm = 1.930 ppm
Dibutylphthalate CAS 84-74-2 DBP   < 50 ppm < 16.084 ppm
Diisobutyl Phthalate CAS 84-69-53 DIBP   < 50 ppm < 16.084 ppm
Hexavalent Chromium Cr+6   < 2 ppm < 0.643 ppm
Lead Pb   = 22 ppm = 7.077 ppm
Mercury Hg   < 2 ppm < 0.643 ppm
Polybrominated Biphenyls PBB   < 5 ppm < 1.608 ppm
Polybrominated Diphenyl Ethers PBDE   < 5 ppm < 1.608 ppm

The less than (<) symbol is used to indicate that the test results are below the amounts indicated, which are the minimum detection limits of the laboratory performing the testing. The exception to this is for plating containing lead, where the maximum amount of lead is listed.
RoHS maximum limits (ppm): 1000 for Pb, Hg, Cr6+, PBB, PBDE (exemption: lead if solderballs are used.) 100 for Cd.
Reportable substances (if present): Antimony Trioxide, Brominated Flame Retardants, Nickel.
Weighted average = for part as a whole.

The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its use. The user is cautioned to verify that the information being relied upon is current.





As a supplier of components, we are not required to assess regulatory requirements (such as the European RoHS Directive (2011/65/EU) - hereinafter referred to as RoHS) that apply to finished product. Please note further that product may contain small amounts of lead. Therefore, we cannot make representations, warranties or indemnities regarding the complete absence of lead in the finished product.

You will note that, if there is sufficient volume and the above referenced product is not below RoHS allowable thresholds, we are prepared to discuss making a product listed by Allegro that is below RoHS allowable thresholds.

Allegro MicroSystems, LLC is a cooperative environmental supplier who fully supports global environmental initiatives. We value our customer relationships and are committed to provide the highest levels of quality standards.

Geoffrey H. DesRosiers
Quality Systems Specialist

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