CESD12VD3 ZC

@@ -8,7 +8,7 @@ CESD12VD3 ZC from Changjiang Electronics Tech (CJ), in a SOD-323. Pinout and pin  | Pin | Name | Type | Function | |---|---|---|---|-| 1 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |+| 1 | K | passive | Cathode: the banded end per the datasheet; pad 1 of the KiCad diode footprint. | | 2 | A | passive | Anode. |  ## Key specifications

@@ -50,7 +50,7 @@ <layer number="98" name="Guide" color="6" fill="1" visible="yes" active="yes"/> </layers> <library>-<description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention</description>+<description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention</description> <packages> <package name="D_SOD-323">   <description>2 pads, 2.7 x 0.5 mm. SOD-323</description>@@ -75,7 +75,7 @@ </packages> <symbols> <symbol name="CESD12VD3 ZC">-  <description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention</description>+  <description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention</description>   <wire x1="-1.2700" y1="-1.2700" x2="-1.2700" y2="1.2700" width="0.2540" layer="94"/>   <wire x1="-1.2700" y1="1.2700" x2="-0.7620" y2="1.2700" width="0.2540" layer="94"/>   <wire x1="1.2700" y1="0.0000" x2="-1.2700" y2="0.0000" width="0.1524" layer="94"/>@@ -90,7 +90,7 @@ </symbols> <devicesets> <deviceset name="CESD12VD3 ZC" prefix="D">-  <description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention</description>+  <description>Changjiang Electronics Tech (CJ) ESD Protection Devices, SOD-323. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention</description>   <gates>     <gate name="G$1" symbol="CESD12VD3 ZC" x="0" y="0"/>   </gates>

@@ -68,7 +68,7 @@         "number": "1",         "name": "K",         "type": "passive",-        "description": "Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint."+        "description": "Cathode: the banded end per the datasheet; pad 1 of the KiCad diode footprint."       },       {         "number": "2",@@ -106,6 +106,13 @@         "described": 2,         "cites_pages": true,         "refuses_to_fabricate": true+      },+      "direction": {+        "direction": "unidirectional",+        "quote": "p.1 title 'CESD12VD3 Uni-direction ESD Protection Diode'; 'ZC = Device code'; single diode symbol",+        "source": "datasheet",+        "set": "2026-11-12T21:28:48Z",+        "read_by": "part-reviewer"       }     },     "viewers": {@@ -151,6 +158,12 @@         "checked": "2026-11-04",         "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"       }-    ]+    ],+    "polarity": {+      "cathode": "1",+      "anode": "2",+      "marking": "cathode band",+      "source": "datasheet: p.1 title 'CESD12VD3 Uni-direction ESD Protection Diode'; 'ZC = Device code'; single diode symbol; pad 1 = cathode on the KiCad diode footprint (read by part-reviewer)"+    }   } }

@@ -50,7 +50,7 @@         "number": "1",         "name": "K",         "type": "passive",-        "description": "Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint."+        "description": "Cathode: the banded end per the datasheet; pad 1 of the KiCad diode footprint."       },       {         "number": "2",@@ -88,6 +88,13 @@         "described": 2,         "cites_pages": true,         "refuses_to_fabricate": true+      },+      "direction": {+        "direction": "unidirectional",+        "quote": "p.1 title 'CESD12VD3 Uni-direction ESD Protection Diode'; 'ZC = Device code'; single diode symbol",+        "source": "datasheet",+        "set": "2026-11-12T21:28:48Z",+        "read_by": "part-reviewer"       }     },     "viewers": {@@ -133,7 +140,13 @@         "checked": "2026-11-04",         "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"       }-    ]+    ],+    "polarity": {+      "cathode": "1",+      "anode": "2",+      "marking": "cathode band",+      "source": "datasheet: p.1 title 'CESD12VD3 Uni-direction ESD Protection Diode'; 'ZC = Device code'; single diode symbol; pad 1 = cathode on the KiCad diode footprint (read by part-reviewer)"+    }   },   "metadata": {     "specs": {@@ -343,8 +356,7 @@   ],   "discovery_pitch": "CESD12VD3 ZC (Changjiang Electronics Tech (CJ)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",   "author": {-    "name": "Ray",-    "email": "[email protected]"+    "name": "Ray"   },   "dependencies": {},   "hero": {

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