Standard for Determining Current Carrying Capacity in ...

1 IPC-2152 Standard for DeterminingCurrent Carrying Capacityin printed Board DesignDeveloped by the Current Carrying Capacity Task Group (1-10b) of thePrinted Board Design Committee (1-10) of IPCU sers of this Standard are encouraged to participate in thedevelopment of future :IPC3000 Lakeside Drive, Suite 309 SBannockburn, Illinois60015-1249 Tel 847 847 Table of .. of Terms .. Material .. Layer .. Pattern .. Spacing .. Thickness .. Width .. Weight .. Capacity .. Sink Plane .. Conductivity .. Resistance .. 22 APPLICABLE .. 23 CONDUCTOR SIZING 24 CONDUCTOR SIZING DESIGN 25 CONDUCTOR SIZING Sizing Charts for Still AirEnvironments .. Air Environment Charts in Imperial(Inch) Units.

2 Air Environment Charts in SI(Metric) Units .. Sizing Charts for Vacuum/SpaceEnvironments .. Environment Charts inImperial (Inch) Units .. Environment Charts in SI(Metric) Units .. 15 APPENDIX SELECTING A Temperature Rise .. to Use the Charts .. Basics: Known Current .. to Via to Plane .. SUPPLEMENTAL Thickness .. Weight .. Material .. Planes .. Plane .. Distance from Plane .. ADDITIONAL Transfer from a Conductor .. Power Electrical Shaped Geometries and Swiss-Cheese Effect .. Drop Analysis .. Source (or Sink) .. Conductivity .. CONDUCTOR SIZING Sizing Charts for Still AirEnvironments .. Still Air Environment Charts in Imperial(Inch) Units.

3 Still Air Environment Charts in SI(Metric) Units .. Sizing Charts for Vacuum/SpaceEnvironments .. Vacuum/Space Environment Charts inImperial (Inch) Units .. Vacuum/Space Environment Charts in SI(Metric) Units .. Origin of the First ConductorSizing Chart .. 85 August 2009 IPC-2152vFiguresFigure 5-1 Internal and External Conductors (AllEnvironments) .. 5 Figure 5-2 Internal and External Conductors (Still Air)(5-700 Sq-mils) .. 6 Figure 5-3 Internal and External Conductors (Still Air)(5-700 Sq-mils) .. 7 Figure 5-4 Internal and External Conductors (Still Air)(5-100 Sq-mils) .. 7 Figure 5-5 Internal and External Conductors (Still Air)(5 - 50 Sq-mils) .. 8 Figure 5-6 Internal and External Conductors (Still Air)( - Sq-mm).

4 9 Figure 5-7 Internal and External Conductors (Still Air)( - Sq-mm) .. 10 Figure 5-8 Internal and External Conductors (Still Air)( - Sq-mm) .. 10 Figure 5-9 Internal and External Conductors (Still Air)( - Sq-mm) .. 11 Figure 5-10 Internal and External Conductors (Vacuum)(5 - 700 Sq-mils) .. 12 Figure 5-11 Internal and External Conductors (Vacuum)(5 - 700 Sq-mils) .. 13 Figure 5-12 Internal and External Conductors (Vacuum)(5 - 100 Sq-mils) .. 13 Figure 5-13 Internal and External Conductors (Vacuum)(5 - 50 Sq-mils) .. 14 Figure 5-14 Internal and External Conductors (Vacuum)( - Sq-mm) .. 15 Figure 5-15 Internal and External Conductors (Vacuum)( - Sq-mm) .. 16 Figure 5-16 Internal and External Conductors (Vacuum)( - Sq-mm).

5 16 Figure 5-17 Internal and External Conductors (Vacuum)( - Sq-mm) .. 17 Figure A-1 External and Internal Conductors(This figure is a duplicate of Figure 5-1in IPC-2152) .. 19 Figure A-2 External and Internal Conductor SizingChart .. 21 Figure A-3 Parallel Conductors .. 22 Figure A-4[ in] wide (1-oz.) Conductor at 10 CTemperature Gradient .. 23 Figure mm [ in] Single Conductor .. 23 Figure A-6 Two mm [ in] conductors( mm [ in] spacing) amperageadjusted for parallel conductor .. 24 Figure A-7 Two mm [ in] Conductors( mm [ in] spacing) Noamperage adjustment .. 24 Figure A-8 Two mm [ in] Conductors( mm [ in] spacing) Amperageadjusted for Parallel Conductor .. 25 Figure A-9 Two mm [ in] Conductors( mm [ in] spacing) Amperageadjusted for Parallel Conductor.

6 25 Figure A-10 Two mm [ in] Conductors( mm [ in] spacing) No amperageadjustment .. 26 Figure A-11 Via Cross-sectional Area .. 27 Figure A-12 Via Temperature Gradient .. 27 Figure A-13 Distance from Conductor to Copper Plane .. 30 Figure A-14 Single Conductor in a PB .. 31 Figure A-153 oz. External Conductors (Still Air) Log(5 - 700 Sq-mils) .. 34 Figure A-163 oz. External Conductors (Still Air)(5 - 700 Sq-mils) .. 35 Figure A-173 oz. External Conductors (Still Air)(5 - 100 Sq-mils) .. 35 Figure A-183 oz. External Conductors (Still Air)(5 - 50 Sq-mils) .. 36 Figure A-193 oz. Internal Conductors (Still Air) Log(5 - 700 Sq-mils) .. 37 Figure A-203 oz. Internal Conductors (Still Air)(5 - 700 Sq-mils) .. 38 Figure A-213 oz.

7 Internal Conductors (Still Air)(5 - 100 Sq-mils) .. 38 Figure A-223 oz. Internal Conductors (Still Air)(5 - 50 Sq-mils) .. 39 Figure A-232 oz. External Conductors (Still Air) Log(5 - 700 Sq-mils) .. 40 Figure A-242 oz. External Conductors (Still Air)(5 - 700 Sq-mils) .. 41 Figure A-252 oz. External Conductors (Still Air)(5 - 100 Sq-mils) .. 41 Figure A-262 oz. External Conductors (Still Air)(5 - 50 Sq-mils) .. 42 Figure A-272 oz. Internal Conductors (Still Air) Log(5 - 700 Sq-mils) .. 43 Figure A-282 oz. Internal Conductors (Still Air)(5 - 700 Sq-mils) .. 44 Figure A-292 oz. Internal Conductors (Still Air)(5 - 100 Sq-mils) .. 44 Figure A-302 oz. Internal Conductors (Still Air)(5 - 50 Sq-mils) .. 45 Figure A-311 oz.

8 Internal Conductors (Still Air) Log(5 - 700 Sq-mils) .. 46 Figure A-321 oz. Internal Conductors (Still Air)(5 - 700 Sq-mils) .. 46 Figure A-331 oz. Internal Conductors (Still Air)(5 - 100 Sq-mils) .. 47 Figure A-341 oz. Internal Conductors (Still Air)(5 - 50 Sq-mils) .. 47 Figure A-351 2 oz. Internal Conductors (Still Air)Log (5 - 700 Sq-mils) .. 48 Figure A-361 2 oz. Internal Conductors (Still Air)(5 - 700 Sq-mils) .. 48 Figure A-371 2 oz. Internal Conductors (Still Air)(5 - 100 Sq-mils) .. 49 Figure A-381 2 oz. Internal Conductors (Still Air)(5 - 50 Sq-mils) .. 49 Figure A-393 oz. External Conductors (Still Air) Log( - Sq-mm) .. 50 IPC-2152 August 2009viFigure A-403 oz. External Conductors (Still Air)(0 - Sq-mm).

9 51 Figure A-413 oz. External Conductors (Still Air)(0 - Sq-mm) .. 51 Figure A-423 oz. External Conductors (Still Air)(0 - Sq-mm) .. 52 Figure A-433 oz. Internal Conductors (Still Air) Log(0 - 700 Sq-mm) .. 53 Figure A-443 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 54 Figure A-453 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 54 Figure A-463 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 55 Figure A-472 oz. External Conductors (Still Air) Log( - Sq-mm) .. 56 Figure A-482 oz. External Conductors (Still Air)( - Sq-mm) .. 57 Figure A-492 oz. External Conductors (Still Air)(0 - Sq-mm) .. 57 Figure A-502 oz. External Conductors (Still Air)(0 - Sq-mm) .. 58 Figure A-512 oz. Internal Conductors (Still Air) Log(0 - Sq-mm).

10 59 Figure A-522 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 60 Figure A-532 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 60 Figure A-542 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 61 Figure A-551 oz. Internal Conductors (Still Air) Log(0 - Sq-mm) .. 62 Figure A-561 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 62 Figure A-571 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 63 Figure A-581 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 64 Figure A-591 2 oz. Internal Conductors (Still Air)Log (0 - Sq-mm) .. 65 Figure A-601 2 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 65 Figure A-611 2 oz. Internal Conductors (Still Air)(0 - Sq-mm) .. 66 Figure A-621 2 oz.