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ULN2803G-D18-T
Public Made by Adomby adom
UTC Unisonic Tech Darlington Transistor Arrays, DIP-18. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownULN2803G-D18-T
UTC Unisonic Tech · Darlington Transistor Arrays · DIP-18
ULN2803G-D18-T from UTC Unisonic Tech, in a DIP-18. 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 | IN1 | input | Darlington driver input 1; input voltage rated -0.5 to 30 V, drives output 18. |
| 2 | IN2 | input | Darlington driver input 2; input voltage rated -0.5 to 30 V, drives output 17. |
| 3 | IN3 | input | Darlington driver input 3; input voltage rated -0.5 to 30 V, drives output 16. |
| 4 | IN4 | input | Darlington driver input 4; input voltage rated -0.5 to 30 V, drives output 15. |
| 5 | IN5 | input | Darlington driver input 5; input voltage rated -0.5 to 30 V, drives output 14. |
| 6 | IN6 | input | Darlington driver input 6; input voltage rated -0.5 to 30 V, drives output 13. |
| 7 | IN7 | input | Darlington driver input 7; input voltage rated -0.5 to 30 V, drives output 12. |
| 8 | IN8 | input | Darlington driver input 8; input voltage rated -0.5 to 30 V, drives output 11. |
| 9 | GND | power_in | Ground reference for the Darlington array. |
| 10 | COMMON | passive | Common cathode of the free-wheeling clamp diodes; clamp diode reverse voltage 50 V max, forward current 500 mA max. |
| 11 | OUT8 | output | Open-collector Darlington output 8; 500 mA max per channel, 50 V sustaining voltage. |
| 12 | OUT7 | output | Open-collector Darlington output 7; 500 mA max per channel, 50 V sustaining voltage. |
| 13 | OUT6 | output | Open-collector Darlington output 6; 500 mA max per channel, 50 V sustaining voltage. |
| 14 | OUT5 | output | Open-collector Darlington output 5; 500 mA max per channel, 50 V sustaining voltage. |
| 15 | OUT4 | output | Open-collector Darlington output 4; 500 mA max per channel, 50 V sustaining voltage. |
| 16 | OUT3 | output | Open-collector Darlington output 3; 500 mA max per channel, 50 V sustaining voltage. |
| 17 | OUT2 | output | Open-collector Darlington output 2; 500 mA max per channel, 50 V sustaining voltage. |
| 18 | OUT1 | output | Open-collector Darlington output 1; 500 mA max per channel, 50 V sustaining voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | DIP-18 |
| Category | Transistors/Thyristors |
| Pins | 18 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | -0.5 | 30 | V | 3 | ||
| Output Sustaining Voltage | VCE (SUS) | -0.5 | 50 | V | 3 | ||
| Output Current | IOUT | 500 | mA/ch | 3 | |||
| Clamp Diode Reverse Voltage | VR | 50 | V | 3 | |||
| Clamp Diode Forward Current | IF | 500 | mA | 3 | |||
| Power Dissipation | PD | 1.47 | W | DIP-18; note 1: glass epoxy PCB (30x30x1.6mm Cu 50%) | 3 | ||
| Operating Temperature | TOPR | -40 | 85 | C | 3 | ||
| Storage Temperature | TSTG | -40 | 150 | C | 3 | ||
| Output Leakage Current | ICEX | 50 | μA | VCE=50V,TA=25C | 3 | ||
| Output Leakage Current | ICEX | 100 | μA | VCE=50V,TA=85C | 3 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 1.3 | 1.6 | V | IOUT=350mA,IIN=500A | 3 | |
| Collector-Emitter Saturation Voltage | VCE(SAT) | 1.1 | 1.3 | V | IOUT=200mA,IIN=350A | 3 | |
| Collector-Emitter Saturation Voltage | VCE(SAT) | 0.9 | 1.1 | V | IOUT=100mA,IIN=250A | 3 | |
| Input Current (on) | IIN(ON) | 0.93 | 1.35 | mA | VIN=3.85V,IOUT=350mA | 3 | |
| Input Current (off) | IIN(OFF) | 50 | 65 | μA | IOUT=500A, TA=85C | 3 | |
| Input Voltage (output on) | VIN(ON) | 2.4 | V | VCE=2.0V, IOUT=200mA | 3 | ||
| Input Voltage (output on) | VIN(ON) | 2.7 | V | VCE=2.0V, IOUT=250mA | 3 | ||
| Input Voltage (output on) | VIN(ON) | 3 | V | VCE=2.0V, IOUT=300mA | 3 | ||
| Clamp Diode Reverse Current | IR | 50 | μA | VR=50V, TA=25C | 3 | ||
| Clamp Diode Reverse Current | IR | 100 | μA | VR=50V, TA=85C | 3 | ||
| Clamp Diode Forward Voltage | VF | 2 | V | IF=350mA | 3 | ||
| Input Capacitance | CIN | 15 | 25 | pF | 3 | ||
| Turn-On Delay | tON | 0.1 | 1 | μS | VOUT=50V,RL=125,CL=15pF | 3 | |
| Turn-Off Delay | tOFF | 0.2 | 1 | μS | VOUT=50V,RL=125,CL=15pF | 3 |
CAD (KiCad official)
- Symbol:
ULN2803G-D18-T - Footprint:
Package_DIP:DIP-18_W7.62mm - 3D model: DIP-18 (KiCad packages3D, STEP)
- 3D model files:
uln2803g-d18-t-etched.step/uln2803g-d18-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uln2803g-d18-t.step/uln2803g-d18-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (6 pp, sha256
e652907963e40a2d, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).