component
ZMM5257BST
Public Made by Adomby adom
ST(Semtech) Zener Diodes, LL-34. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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page.json+188−28@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "zmm5257bst",+ "title": "ZMM5257BST",+ "brief": "ST(Semtech) Zener Diodes, LL-34. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.", "version": "0.1.0",- "type": "component",- "description": "ST(Semtech) Zener Diodes, LL-34. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "diodes",@@ -10,26 +13,6 @@ "factory-2.0.0", "extractor-text" ],- "dependencies": {},- "hero": {- "type": "image",- "path": "docs/hero.png"- },- "files": [- "page.json",- "README.md",- "zmm5257bst.kicad_sym",- "zmm5257bst.kicad_mod",- "zmm5257bst.glb",- "zmm5257bst.step",- "zmm5257bst.lbr",- "docs/hero.png",- "docs/zmm5257bst-datasheet.pdf",- "viewers/symbol.html",- "viewers/footprint.html",- "zmm5257bst-hero.glb",- "zmm5257bst-hero.overlay.json"- ], "component": { "mpn": "ZMM5257BST", "manufacturer": "ST(Semtech)",@@ -123,8 +106,8 @@ 1.4, 1.4 ],- "zmin_mm": 0,- "centre_offset_mm": 0,+ "zmin_mm": -0.0,+ "centre_offset_mm": 0.0, "footprint_binding": "identity", "sha256": "bab3a3356a14efb0438caca9adf53472dea34425715606e933f092f87f73f650", "checked": "2026-10-22",@@ -132,10 +115,187 @@ } ] },- "visibility": "public",- "org": "adom",+ "metadata": {+ "specs": {+ "Manufacturer": "ST(Semtech)",+ "Package": "LL-34",+ "Category": "Diodes",+ "Pins": "2"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "a48a7bc3e88e9776ea4ad3b8d302b5e66c40e6142059fdaa5e934c5a082a2108",+ "rows": [+ {+ "name": "Zener Voltage Min/Max",+ "symbol": "VZT",+ "kind": "electrical",+ "unit": "V",+ "min": 31.35,+ "typ": 33,+ "max": 34.65,+ "conditions": "at IZT = 3.8 mA, tested with pulses tp = 20 ms",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Dynamic Resistance",+ "symbol": "ZZT",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": null,+ "max": 58,+ "conditions": "at IZT = 3.8 mA",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Dynamic Resistance (knee)",+ "symbol": "ZZK",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": null,+ "max": 700,+ "conditions": "at IZK = 0.25 mA",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Reverse Current",+ "symbol": "IR",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 0.1,+ "conditions": "at VR = 25 V",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Forward Voltage",+ "symbol": "VF",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 1.1,+ "conditions": "at IF = 200 mA",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Thermal Resistance Junction to Ambient Air",+ "symbol": "RthA",+ "kind": "thermal",+ "unit": "K/mW",+ "min": null,+ "typ": null,+ "max": 0.3,+ "conditions": "Valid provided that electrodes are kept at ambient temperature",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Power Dissipation",+ "symbol": "Ptot",+ "kind": "absolute_maximum",+ "unit": "mW",+ "min": null,+ "typ": null,+ "max": 500,+ "conditions": "Ta = 25 °C, electrodes kept at ambient temperature",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Junction Temperature",+ "symbol": "Tj",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": null,+ "typ": null,+ "max": 175,+ "conditions": "Ta = 25 °C",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Storage Temperature Range",+ "symbol": "Tstg",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -65,+ "typ": null,+ "max": 175,+ "conditions": "Ta = 25 °C",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Zener Voltage Tolerance (suffix B)",+ "symbol": "VZnom",+ "kind": "tolerance",+ "unit": "%",+ "min": -5,+ "typ": null,+ "max": 5,+ "conditions": "suffix B",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Nominal Zener Voltage",+ "symbol": "VZnom",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 33,+ "max": null,+ "conditions": "at IZT = 3.8 mA",+ "source_page": 2,+ "source": "datasheet"+ }+ ]+ }+ },+ "variants": [],+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "zmm5257bst"+ ],+ "discovery_pitch": "ZMM5257BST (ST(Semtech)) component page: datasheet pinout, KiCad symbol, footprint and 3D.", "author": { "name": "Ray", "email": "[email protected]"- }-}+ },+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "zmm5257bst.kicad_sym",+ "zmm5257bst.kicad_mod",+ "zmm5257bst.glb",+ "zmm5257bst.step",+ "zmm5257bst.lbr",+ "docs/hero.png",+ "docs/zmm5257bst-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "zmm5257bst-hero.glb",+ "zmm5257bst-hero.overlay.json"+ ]+}