component
UMG8N
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Changjing Digital Transistors, SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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UMG8N
Changjing · Digital Transistors · SOT-353
UMG8N from Changjing, in a SOT-353. 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 | Input of Tr1 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V. |
| 2 | GND | power_in | Common emitter (GND) of Tr1 and Tr2. |
| 3 | IN2 | input | Input of Tr2 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V. |
| 4 | OUT2 | output | Output (collector) of Tr2, rated 100 mA output current and 50 V supply voltage maximum. |
| 5 | OUT1 | output | Output (collector) of Tr1, rated 100 mA output current and 50 V supply voltage maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-353 |
| Category | Transistors/Thyristors |
| Pins | 5 |
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 turn-on voltage | Vi(on) | 1.3 | V | VCC=0.3V, IO=5mA | 1 | ||
| Input cut-off voltage | Vi(off) | 0.5 | V | VCC=5V, IO=100µA | 1 | ||
| Output voltage | VO(on) | 0.3 | V | IO=5mA, Ii=0.25mA | 1 | ||
| Input cut-off current | Ii | 1.8 | mA | Vi =5V | 1 | ||
| Output cut-off current | IO(off) | 0.5 | µA | VCC=50V, Vi=0 | 1 | ||
| DC current gain | Gi | 80 | VO=5V, IO=10mA | 1 | |||
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | 1 | |
| Resistance ratio | R2/R1 | 8 | 10 | 12 | 1 | ||
| Transition frequency | fT | 250 | MHz | VO=10V, IO=5mA, f=100MHz | 1 | ||
| Supply voltage | VCC | 50 | V | 1 | |||
| Input voltage | Vi | -5 | 30 | V | 1 | ||
| Output current | IO | 100 | mA | 1 | |||
| Power dissipation | PD | 150 | mW | Total; 120mW per element must not be exceeded | 1 | ||
| Junction temperature | TJ | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
UMG8N - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files:
umg8n-etched.step/umg8n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);umg8n.step/umg8n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
55ca65d38f6987f8, retrieved 2026-10-18, 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).
# UMG8N
**Changjing** · Digital Transistors · SOT-353
UMG8N from Changjing, in a SOT-353. 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 | Input of Tr1 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V. |
| 2 | GND | power_in | Common emitter (GND) of Tr1 and Tr2. |
| 3 | IN2 | input | Input of Tr2 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V. |
| 4 | OUT2 | output | Output (collector) of Tr2, rated 100 mA output current and 50 V supply voltage maximum. |
| 5 | OUT1 | output | Output (collector) of Tr1, rated 100 mA output current and 50 V supply voltage maximum. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-353 |
| Category | Transistors/Thyristors |
| Pins | 5 |
## 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 turn-on voltage | Vi(on) | 1.3 | | | V | VCC=0.3V, IO=5mA | 1 |
| Input cut-off voltage | Vi(off) | | | 0.5 | V | VCC=5V, IO=100µA | 1 |
| Output voltage | VO(on) | | | 0.3 | V | IO=5mA, Ii=0.25mA | 1 |
| Input cut-off current | Ii | | | 1.8 | mA | Vi =5V | 1 |
| Output cut-off current | IO(off) | | | 0.5 | µA | VCC=50V, Vi=0 | 1 |
| DC current gain | Gi | 80 | | | | VO=5V, IO=10mA | 1 |
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | | 1 |
| Resistance ratio | R2/R1 | 8 | 10 | 12 | | | 1 |
| Transition frequency | fT | | 250 | | MHz | VO=10V, IO=5mA, f=100MHz | 1 |
| Supply voltage | VCC | | | 50 | V | | 1 |
| Input voltage | Vi | -5 | | 30 | V | | 1 |
| Output current | IO | | | 100 | mA | | 1 |
| Power dissipation | PD | | | 150 | mW | Total; 120mW per element must not be exceeded | 1 |
| Junction temperature | TJ | | | 150 | ℃ | | 1 |
| Storage temperature | Tstg | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `UMG8N`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `umg8n-etched.step` / `umg8n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `umg8n.step` / `umg8n.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586203268887928832) (4 pp, sha256 `55ca65d38f6987f8`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/umg8n-datasheet.pdf)