component
1N4148
Public Unreviewedby adom
Diodes Inc fast switching diode, DO-35. 100 V, 300 mA, 4 ns recovery. The through-hole 1N4148W. Datasheet-verified.
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1n4148.glbadded⋯ 1 unchanged line ⋯
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1n4148.kicad_symadded+192@@ -0,0 +1,192 @@+(kicad_symbol_lib+ (version 20251024)+ (generator "kicad_symbol_editor")+ (generator_version "10.0")+(symbol "1N4148"+ (pin_numbers+ (hide yes)+ )+ (pin_names+ (hide yes)+ )+ (exclude_from_sim no)+ (in_bom yes)+ (on_board yes)+ (in_pos_files yes)+ (duplicate_pin_numbers_are_jumpers no)+ (property "Reference" "D"+ (at 0 2.54 0)+ (show_name no)+ (do_not_autoplace no)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Value" "1N4148"+ (at 0 -2.54 0)+ (show_name no)+ (do_not_autoplace no)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Footprint" "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Datasheet" "http://www.vishay.com/docs/88503/1n4001.pdf"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Description" "50V 1A General Purpose Rectifier Diode, DO-41"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Sim.Device" "D"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "Sim.Pins" "1=K 2=A"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "ki_keywords" "diode"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (property "ki_fp_filters" "D*DO?41*"+ (at 0 0 0)+ (show_name no)+ (do_not_autoplace no)+ (hide yes)+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (symbol "1N4148_0_1"+ (polyline+ (pts+ (xy -1.27 1.27) (xy -1.27 -1.27)+ )+ (stroke+ (width 0.254)+ (type default)+ )+ (fill+ (type none)+ )+ )+ (polyline+ (pts+ (xy 1.27 1.27) (xy 1.27 -1.27) (xy -1.27 0) (xy 1.27 1.27)+ )+ (stroke+ (width 0.254)+ (type default)+ )+ (fill+ (type none)+ )+ )+ (polyline+ (pts+ (xy 1.27 0) (xy -1.27 0)+ )+ (stroke+ (width 0)+ (type default)+ )+ (fill+ (type none)+ )+ )+ )+ (symbol "1N4148_1_1"+ (pin passive line+ (at -3.81 0 0)+ (length 2.54)+ (name "K"+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (number "1"+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ )+ (pin passive line+ (at 3.81 0 180)+ (length 2.54)+ (name "A"+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ (number "2"+ (effects+ (font+ (size 1.27 1.27)+ )+ )+ )+ )+ )+ (embedded_fonts no)+ )+)
README.md+43−2@@ -1,5 +1,46 @@ # 1N4148 -Small-signal fast switching diode, 100V, DO-35+**Diodes Incorporated** · Small-signal switching diode · DO-35 -The 1N4148 is a standard small-signal silicon switching diode. Rated at 100V reverse voltage with 4ns recovery time. One of the most widely used diodes for signal clamping, protection, and general switching.+The 1N4148 is the standard small-signal fast switching diode, in the axial DO-35 glass package, one of the most-used diodes ever made. It blocks 100 V, passes up to 300 mA, and recovers in about 4 nanoseconds, which is what makes it fast enough for logic, clamping, small rectification, steering, and flyback snubbing on tiny loads. It is the through-hole version of the surface-mount 1N4148W (SOD-123). The banded end is the cathode (pin 1).++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | K | passive | Cathode terminal of the diode, identified by the printed band on the glass body (Polarity: Cathode Band). Blocks reverse current up to VR = 75V DC (VRM = 100V non-repetitive). |+| 2 | A | passive | Anode terminal of the diode. Conventional forward current flows into this lead toward the cathode; VF typ 0.62V min to 1.0V max at IF = 10mA (1N4148). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Fast switching diode |+| Reverse voltage (VRRM) | 100 V |+| Forward current (IF avg) | 300 mA |+| Reverse recovery (trr) | 4 ns |+| Forward voltage (VF) | ~0.72 V at 10 mA |+| Peak surge (IFSM) | 2 A |+| Marking | band = cathode (pin 1) |+| Package | DO-35 (axial glass) |++## Ordering variants++- `1N4148-T (DO-35)`+- `1N4148TR (DO-35, tape & reel)`++## CAD (KiCad official)++- Symbol: `Diode:1N4148`+- Footprint: `Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal`+- 3D model: DO-35 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/ds12019.pdf) (2 pp, sha256 `5549ceb4097e1393`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/1n4148-datasheet.pdf)
docs/1n4148-datasheet.pdfadded⋯ 1 unchanged line ⋯
docs/hero.pngadded⋯ 1 unchanged line ⋯
package.jsonadded+31@@ -0,0 +1,31 @@+{+ "slug": "1n4148",+ "version": "0.1.0",+ "type": "component",+ "description": "Diodes Inc fast switching diode, DO-35. 100 V, 300 mA, 4 ns recovery. The through-hole 1N4148W. Datasheet-verified.",+ "tags": [+ "component",+ "diode",+ "switching",+ "fast",+ "1n4148",+ "do-35",+ "diodes-inc"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "1n4148.kicad_sym",+ "1n4148.kicad_mod",+ "1n4148.glb",+ "docs/hero.png",+ "docs/1n4148-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ]+}
page.json+28−7@@ -4,8 +4,16 @@ "slug": "1n4148", "title": "1N4148", "brief": "Small-signal fast switching diode, 100V, DO-35",- "version": "1.0.0",- "tags": [],+ "version": "0.1.0",+ "tags": [+ "component",+ "diode",+ "switching",+ "fast",+ "1n4148",+ "do-35",+ "diodes-inc"+ ], "license": "MIT", "component": { "mpn": "1N4148",@@ -20,18 +28,31 @@ }, "readme": "# 1N4148\n\nSmall-signal fast switching diode, 100V, DO-35\n\nThe 1N4148 is a standard small-signal silicon switching diode. Rated at 100V reverse voltage with 4ns recovery time. One of the most widely used diodes for signal clamping, protection, and general switching.", "author": {- "id": "695820315b5f1e4db2fcf602", "name": "Kyle Bergstedt", "email": "[email protected]" },- "visibility": {- "public": true+ "visibility": "public",+ "hero": {+ "type": "image",+ "path": "docs/hero.png" },- "hero": null, "sample_prompts": [], "discovery_triggers": [], "discovery_pitch": null, "metadata": {}, "created_at": "2026-05-28T05:33:06.689Z",- "updated_at": "2026-05-28T05:33:06.689Z"+ "updated_at": "2026-05-28T05:33:06.689Z",+ "description": "Diodes Inc fast switching diode, DO-35. 100 V, 300 mA, 4 ns recovery. The through-hole 1N4148W. Datasheet-verified.",+ "dependencies": {},+ "files": [+ "page.json",+ "README.md",+ "1n4148.kicad_sym",+ "1n4148.kicad_mod",+ "1n4148.glb",+ "docs/hero.png",+ "docs/1n4148-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ] }