LOC112

@@ -0,0 +1,53 @@+# LOC112++**Littelfuse IXYS** · Transistor, Photovoltaic Output Optoisolators · DIP-8++LOC112 from Littelfuse IXYS, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | -LED | passive | LED cathode. Return-side terminal of the internal infrared emitter diode. LED forward voltage 0.9-1.4 V at IF = 2-10 mA (typ 1.2 V); reverse LED voltage rating 5 V; input control current 100 mA continuous / 1 A peak (10 ms). |+| 2 | +LED | passive | LED anode. Drive-side terminal of the internal infrared emitter diode used to modulate both photodiodes. Drive with 2-10 mA operating current; observe input power dissipation of 150 mW (derate 1.33 mW/°C above 25 °C). |+| 3 | C1 | passive | Servo (feedback/input) photodiode cathode. Together with pin 4 (A1) forms PD1, the feedback photodiode used to close the loop around the LED and cancel its nonlinear temperature/time behavior. Servo gain K1 = IC1/IF = 0.004-0.030 (typ 0.007) at IF = 2-10 mA with VC1-A1 = 15 V. |+| 4 | A1 | passive | Servo (feedback/input) photodiode anode. Return terminal of PD1. Dark current ID typ 1 nA, max 25 nA at IF = 0 mA, VC1-A1 = 15 V. Input/output capacitance CIO typ 3 pF. |+| 5 | A2 | passive | Output photodiode anode. Return terminal of PD2, the output-side photodiode whose photocurrent is linear with respect to the servoed LED current. Output side is isolated from the input by 3750 Vrms. |+| 6 | C2 | passive | Output photodiode cathode. Together with pin 5 (A2) forms PD2, the output photodiode. Forward gain K2 = IC2/IF = 0.004-0.030 (typ 0.007); transfer gain K3 = K2/K1 = 0.733-1.072 (K3-binned into D/E/F/G); K3 linearity ≤1%, temp coefficient ~0.005 %/°C. |+| 7 | NC | unconnected | No internal connection. Leave floating or tie to a convenient node for mechanical/routing purposes; do not use as a tie point for high-voltage nets since it is on the output side of the isolation barrier. |+| 8 | NC | unconnected | No internal connection. Leave floating; not used by the optocoupler. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Littelfuse IXYS |+| Package | DIP-8 |+| Category | Optoisolators |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `LOC112`+- `LOC112P`+- `LOC112PTR`+- `LOC112S`+- `LOC112STR`++## CAD (KiCad official)++- Symbol: `LOC112`+- Footprint: `Package_DIP:DIP-8_W7.62mm`+- 3D model: DIP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Littelfuse IXYS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602583944193982464) (None pp, sha256 `9e9db6ad97363102`, retrieved 2026-08-17, tier: lcsc)+- **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/loc112-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "loc112",+  "version": "0.1.0",+  "type": "component",+  "description": "Littelfuse IXYS Transistor, Photovoltaic Output Optoisolators, DIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "optoisolators",+    "loc112"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "loc112.kicad_sym",+    "loc112.kicad_mod",+    "loc112.glb",+    "loc112.step",+    "loc112.lbr",+    "docs/hero.png",+    "docs/loc112-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file