component
LK1801
Public Made by Adomby adom
LANKE Darlington Transistors, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLK1801
LANKE · Darlington Transistors · SOT-23-6
LK1801 from LANKE, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No internal connection; the datasheet states this pin is left floating (悬空). |
| 2 | E | power_in | Darlington emitter, designated as the ground terminal (接地端) of the channel. |
| 3 | B | input | Darlington base input that accepts TTL/CMOS levels, with VIN(ON) of 2.7V min at 250mA output, VIN(OFF) of 0.6V max, an absolute range of -0.5 to 7V, and an internal 4.7kΩ pull-down to ground. |
| 4 | C | output | Darlington collector output rated for 500mA per channel peak collector current and VCE up to 50V. |
| 5 | NC | unconnected | No internal connection; the datasheet states this pin is left floating (悬空). |
| 6 | COM | passive | Common terminal of the integrated clamp (freewheeling) diodes, rated for VCOM up to 50V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LANKE |
| Package | SOT-23-6 |
| Category | Transistors/Thyristors |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-emitter voltage (absolute maximum) | VCE | -0.5 | 50 | V | 3 | ||
| COM terminal voltage (absolute maximum) | VCOM | 50 | V | 3 | |||
| Input voltage (absolute maximum) | VI | -0.5 | 7 | V | 3 | ||
| Collector peak current (absolute maximum) | ICP | 500 | mA/ch | 3 | |||
| Output clamp diode forward peak current (absolute maximum) | IOK | 500 | mA | 3 | |||
| Total emitter maximum peak current (absolute maximum) | IET | -1 | A | 3 | |||
| Maximum operating junction temperature (absolute maximum) | TJ | 150 | ℃ | 3 | |||
| Soldering temperature (absolute maximum) | 260 | ℃ | 10s | 3 | |||
| Storage temperature range (absolute maximum) | Tstg | -60 | 150 | ℃ | 3 | ||
| Collector-emitter voltage (recommended) | VCE | 0 | 50 | V | 3 | ||
| Output current per channel (recommended) | IOUT | 0 | 350 | mA/ch | TPW=25ms, TA=85℃, TJ=120℃, Duty=10% | 3 | |
| Output current per channel (recommended) | IOUT | 0 | 70 | mA/ch | Duty=50% | 3 | |
| Control signal input voltage (recommended) | VIN | 0 | 7 | V | 3 | ||
| Input voltage, output on (recommended) | VIN(ON) | 2.7 | 7 | V | Iout=250mA | 3 | |
| Input voltage, output off (recommended) | VIN(OFF) | 0 | 0.6 | V | 3 | ||
| Clamp diode reverse voltage (recommended) | VR | 50 | V | 3 | |||
| Clamp diode forward peak current (recommended) | IF | 350 | mA | 3 | |||
| Operating temperature range (recommended) | TA | -40 | 85 | ℃ | 3 | ||
| Input on-voltage | VI(ON) | 2.7 | V | VCE=2.0V, IC=250mA | 4 | ||
| Input on-voltage | VI(ON) | 3 | V | IC=350mA | 4 | ||
| Collector-emitter saturation voltage | VCE(SAT) | 0.9 | 1.1 | V | II=250uA | 4 | |
| Collector-emitter saturation voltage | VCE(SAT) | 1 | 1.3 | V | II=350uA, IC=200mA | 4 | |
| Collector-emitter saturation voltage | VCE(SAT) | 1.3 | 1.6 | V | II=500uA, IC=350mA | 4 | |
| Clamp diode forward voltage | VF | 1.7 | 2 | V | IF=350mA | 4 | |
| Collector off-state leakage current | ICEX | 50 | μA | VCE=50V, II=0 | 4 | ||
| Collector off-state leakage current | ICEX | 100 | μA | VCE=50V, TA=85℃, VI=0V | 4 | ||
| Clamp diode reverse current | IR | 100 | μA | VR=50V | 4 | ||
| Propagation delay time, low-to-high | tPLH | 1 | μs | VL=5V, RL=45Ω | 4 | ||
| Propagation delay time, high-to-low | tPHL | 1 | μs | VL=5V, RL=45Ω | 4 |
CAD (KiCad official)
- Symbol:
LK1801 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
lk1801-etched.step/lk1801-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lk1801.step/lk1801.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LANKE datasheet (6 pp, sha256
049de195751f11f9, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).