component
ULN2803
Public Made by Adomby adom
IDCHIP Darlington Transistor Arrays, SSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
ULN2803
IDCHIP · Darlington Transistor Arrays · SSOP-24
ULN2803 from IDCHIP, in a SSOP-24. 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 (empty pin per the pin description table). |
| 2 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 3 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 4 | 1B | input | Channel 1 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 5 | 2B | input | Channel 2 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 6 | 3B | input | Channel 3 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 7 | 4B | input | Channel 4 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 8 | 5B | input | Channel 5 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 9 | 6B | input | Channel 6 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 10 | 7B | input | Channel 7 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 11 | 8B | input | Channel 8 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 12 | E | power_in | Common emitter of all eight Darlington channels, used as the power ground (electrical ground) connection. |
| 13 | COM | power_in | Common node of the output clamp diodes for inductive-load flyback; clamp reverse voltage is 18 V and clamp forward peak current is 350 mA in the recommended conditions. |
| 14 | 8C | output | Channel 8 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 15 | 7C | output | Channel 7 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 16 | 6C | output | Channel 6 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 17 | 5C | output | Channel 5 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 18 | 4C | output | Channel 4 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 19 | 3C | output | Channel 3 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 20 | 2C | output | Channel 2 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 21 | 1C | output | Channel 1 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 22 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 23 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 24 | NC | unconnected | No internal connection (empty pin per the pin description table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | IDCHIP |
| Package | SSOP-24 |
| Category | Transistors/Thyristors |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作温度 Operating temperature | Topr | -40 | 85 | ℃ | 4 | ||
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | 2 | 7 | V | 4 | ||
| 输入电压(输出关断) Input voltage, output off | VIN(OFF) | 0 | 0.6 | V | 4 | ||
| 输入电压(控制信号) Input voltage, control signal | VIN | 0 | 7 | V | 4 | ||
| 集电极-发射极电压 Collector-emitter voltage | VCE | 0 | 12 | V | 4 | ||
| 钳位二极管反向电压 Clamp diode reverse voltage | VR | 18 | V | 4 | |||
| 钳位二极管正向峰值电流 Clamp diode forward peak current | IF | 350 | mA | 4 | |||
| 输出电流 Output current | IOUT | 350 | mA/ch | TPW=25ms,TA=85℃,TJ=120℃,Duty=10% | 4 | ||
| 输出电流 Output current | IOUT | 70 | mA/ch | TPW=25ms,TA=85℃,TJ=120℃,Duty=50% | 4 | ||
| 输入电压 Input voltage | VIN | -0.5 | 7 | V | 3 | ||
| 集电极-发射极电压 Collector-emitter voltage | VCE | -0.5 | 15 | V | 3 | ||
| COM端电压 COM terminal voltage | VCOM | 15 | V | 3 | |||
| 集电极峰值电流 Collector peak current | ICP | 500 | mA/ch | 3 | |||
| 输出钳位二极管正向峰值电流 Output clamp diode forward peak current | IOK | 500 | mA | 3 | |||
| 总发射极最大峰值电流 Total emitter maximum peak current | IET | -2 | A | 3 | |||
| 储存温度 Storage temperature | TS | -60 | 150 | ℃ | 3 | ||
| 节点温度 Junction temperature | TJ | 150 | ℃ | 3 | |||
| 焊接温度 Soldering temperature | TL | 260 | ℃ | 10 s | 3 | ||
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | 1.75 | 1.85 | V | VCE=1.5V,IC=250mA | 4 | |
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | 1.85 | 2 | V | VCE=1.5V,IC=350mA | 4 | |
| 输入电流 Input current | IIN | 2.2 | 2.8 | mA | VIN=3.3V,IC=250mA | 4 | |
| 输入电流 Input current | IIN | 1.5 | 2 | mA | VIN=3.3V,IC=250mA | 4 | |
| 输入电流 Input current | IIN | 0.6 | 1.2 | mA | VIN=3.3V,IC=250mA | 4 | |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | 1 | 1.2 | V | VIN=1.8V,IC=250mA | 4 | |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | 1.15 | 1.3 | V | VIN=1.8V,IC=350mA | 4 | |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | 1.3 | 1.6 | V | VIN=3.3V,IC=500mA | 4 | |
| 钳位二极管正向压降 Clamp diode forward voltage | VF | 1.4 | 1.6 | V | IF=350mA | 4 | |
| 钳位二极管反向电流 Clamp diode reverse current | IR | 100 | μA | VR=12V | 4 | ||
| 集电极关断漏电流 Collector cutoff leakage current | ICEX | 50 | μA | VCE=12V,IIN=0 | 4 | ||
| 集电极关断漏电流 Collector cutoff leakage current | ICEX | 100 | μA | VCE=12V,VIN=0V | 4 | ||
| 输入电容 Input capacitance | CIN | 15 | pF | 4 | |||
| 传输延迟(低-高) Propagation delay, low-to-high | tPLH | 0.15 | 1 | μs | VL=5V,RL=45Ω | 4 | |
| 传输延迟(高-低) Propagation delay, high-to-low | tPHL | 0.15 | 1 | μs | VL=5V,RL=45Ω | 4 |
CAD (KiCad official)
- Symbol:
ULN2803 - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24 (KiCad packages3D, STEP)
- 3D model files:
uln2803-etched.step/uln2803-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uln2803.step/uln2803.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: IDCHIP datasheet (7 pp, sha256
86fae04a544f615b, retrieved 2026-10-19, 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).
# ULN2803
**IDCHIP** · Darlington Transistor Arrays · SSOP-24
ULN2803 from IDCHIP, in a SSOP-24. 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 (empty pin per the pin description table). |
| 2 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 3 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 4 | 1B | input | Channel 1 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 5 | 2B | input | Channel 2 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 6 | 3B | input | Channel 3 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 7 | 4B | input | Channel 4 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 8 | 5B | input | Channel 5 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 9 | 6B | input | Channel 6 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 10 | 7B | input | Channel 7 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 11 | 8B | input | Channel 8 Darlington base input; VIN(ON) is 2 to 7 V to turn the output on and VIN(OFF) is 0 to 0.6 V to turn it off, with an internal pull-down to ground. |
| 12 | E | power_in | Common emitter of all eight Darlington channels, used as the power ground (electrical ground) connection. |
| 13 | COM | power_in | Common node of the output clamp diodes for inductive-load flyback; clamp reverse voltage is 18 V and clamp forward peak current is 350 mA in the recommended conditions. |
| 14 | 8C | output | Channel 8 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 15 | 7C | output | Channel 7 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 16 | 6C | output | Channel 6 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 17 | 5C | output | Channel 5 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 18 | 4C | output | Channel 4 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 19 | 3C | output | Channel 3 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 20 | 2C | output | Channel 2 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 21 | 1C | output | Channel 1 Darlington collector output (open collector); absolute maximum collector-emitter voltage 15 V and peak collector current 500 mA per channel. |
| 22 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 23 | NC | unconnected | No internal connection (empty pin per the pin description table). |
| 24 | NC | unconnected | No internal connection (empty pin per the pin description table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | IDCHIP |
| Package | SSOP-24 |
| Category | Transistors/Thyristors |
| Pins | 24 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作温度 Operating temperature | Topr | -40 | | 85 | ℃ | | 4 |
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | 2 | | 7 | V | | 4 |
| 输入电压(输出关断) Input voltage, output off | VIN(OFF) | 0 | | 0.6 | V | | 4 |
| 输入电压(控制信号) Input voltage, control signal | VIN | 0 | | 7 | V | | 4 |
| 集电极-发射极电压 Collector-emitter voltage | VCE | 0 | | 12 | V | | 4 |
| 钳位二极管反向电压 Clamp diode reverse voltage | VR | | | 18 | V | | 4 |
| 钳位二极管正向峰值电流 Clamp diode forward peak current | IF | | | 350 | mA | | 4 |
| 输出电流 Output current | IOUT | | | 350 | mA/ch | TPW=25ms,TA=85℃,TJ=120℃,Duty=10% | 4 |
| 输出电流 Output current | IOUT | | | 70 | mA/ch | TPW=25ms,TA=85℃,TJ=120℃,Duty=50% | 4 |
| 输入电压 Input voltage | VIN | -0.5 | | 7 | V | | 3 |
| 集电极-发射极电压 Collector-emitter voltage | VCE | -0.5 | | 15 | V | | 3 |
| COM端电压 COM terminal voltage | VCOM | | | 15 | V | | 3 |
| 集电极峰值电流 Collector peak current | ICP | | | 500 | mA/ch | | 3 |
| 输出钳位二极管正向峰值电流 Output clamp diode forward peak current | IOK | | | 500 | mA | | 3 |
| 总发射极最大峰值电流 Total emitter maximum peak current | IET | | | -2 | A | | 3 |
| 储存温度 Storage temperature | TS | -60 | | 150 | ℃ | | 3 |
| 节点温度 Junction temperature | TJ | | | 150 | ℃ | | 3 |
| 焊接温度 Soldering temperature | TL | | | 260 | ℃ | 10 s | 3 |
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | | 1.75 | 1.85 | V | VCE=1.5V,IC=250mA | 4 |
| 输入电压(输出开启) Input voltage, output on | VIN(ON) | | 1.85 | 2 | V | VCE=1.5V,IC=350mA | 4 |
| 输入电流 Input current | IIN | | 2.2 | 2.8 | mA | VIN=3.3V,IC=250mA | 4 |
| 输入电流 Input current | IIN | | 1.5 | 2 | mA | VIN=3.3V,IC=250mA | 4 |
| 输入电流 Input current | IIN | | 0.6 | 1.2 | mA | VIN=3.3V,IC=250mA | 4 |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | | 1 | 1.2 | V | VIN=1.8V,IC=250mA | 4 |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | | 1.15 | 1.3 | V | VIN=1.8V,IC=350mA | 4 |
| 集电极-发射极饱和压降 Collector-emitter saturation voltage | VCE(sat) | | 1.3 | 1.6 | V | VIN=3.3V,IC=500mA | 4 |
| 钳位二极管正向压降 Clamp diode forward voltage | VF | | 1.4 | 1.6 | V | IF=350mA | 4 |
| 钳位二极管反向电流 Clamp diode reverse current | IR | | | 100 | μA | VR=12V | 4 |
| 集电极关断漏电流 Collector cutoff leakage current | ICEX | | | 50 | μA | VCE=12V,IIN=0 | 4 |
| 集电极关断漏电流 Collector cutoff leakage current | ICEX | | | 100 | μA | VCE=12V,VIN=0V | 4 |
| 输入电容 Input capacitance | CIN | | | 15 | pF | | 4 |
| 传输延迟(低-高) Propagation delay, low-to-high | tPLH | | 0.15 | 1 | μs | VL=5V,RL=45Ω | 4 |
| 传输延迟(高-低) Propagation delay, high-to-low | tPHL | | 0.15 | 1 | μs | VL=5V,RL=45Ω | 4 |
## CAD (KiCad official)
- Symbol: `ULN2803`
- Footprint: `Package_SO:SSOP-24_5.3x8.2mm_P0.65mm`
- 3D model: SSOP-24 (KiCad packages3D, STEP)
- 3D model files: `uln2803-etched.step` / `uln2803-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uln2803.step` / `uln2803.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [IDCHIP datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603128890785349632) (7 pp, sha256 `86fae04a544f615b`, retrieved 2026-10-19, 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`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/uln2803-datasheet.pdf)