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2SD1804L-T-TN3-R
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UTC Unisonic Tech Bipolar (BJT), TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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2SD1804L-T-TN3-R
UTC Unisonic Tech · Bipolar (BJT) · TO-252
2SD1804L-T-TN3-R from UTC Unisonic Tech, in a TO-252. 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 | B | passive | Base terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E). |
| 2 | C | passive | Collector terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E); the datasheet gives a maximum collector current of 8 A (12 A pulse) and collector dissipation of 1 W at TA=25°C for TO-251/TO-252. |
| 3 | E | passive | Emitter terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| Pins | 3 |
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 Dissipation (TO-251/TO-252, TA=25°C) | PD | 1 | W | TA=25°C, TO-251/TO-252 | 2 | ||
| Collector Dissipation (TO-251/TO-252, TC=25°C) | PD | 20 | W | TC=25°C, TO-251/TO-252 | 2 | ||
| Collector-Base Voltage | VCBO | 60 | V | TA=25°C, unless otherwise specified | 2 | ||
| Collector-Emitter Voltage | VCEO | 50 | V | TA=25°C, unless otherwise specified | 2 | ||
| Emitter-Base Voltage | VEBO | 6 | V | TA=25°C, unless otherwise specified | 2 | ||
| Collector Current | IC | 8 | A | TA=25°C, unless otherwise specified | 2 | ||
| Collector Current (PULSE) | IC(PULSE) | 12 | A | TA=25°C, unless otherwise specified | 2 | ||
| Junction Temperature | TJ | 150 | °C | 2 | |||
| Storage Temperature | TSTG | -55 | 150 | °C | 2 | ||
| Collector-Base Breakdown Voltage | BVCBO | 60 | V | IC=10μA, IE=0 | 2 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | 50 | V | IC=1mA, RBE= | 2 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 6 | V | IE=10μA, IC=0 | 2 | ||
| Collector Cutoff Current | ICBO | 1 | μA | VCB=40V, IE=0 | 2 | ||
| Emitter Cutoff Current | IEBO | 1 | μA | VEB=4V, IC=0 | 2 | ||
| DC Current Gain (hFE1) | hFE1 | 70 | 400 | VCE=2V, IC=0.5A | 2 | ||
| DC Current Gain (hFE2) | hFE2 | 35 | VCE=2V, IC=6A | 2 | |||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 200 | 400 | mV | IC=4A, IB=0.2A | 2 | |
| Base-Emitter Saturation Voltage | VBE(SAT) | 0.95 | 1.3 | V | IC=4A, IB=0.2A | 2 | |
| Gain-Bandwidth Product | fT | 180 | MHz | VCE=5V, IC=1A | 2 | ||
| Output Capacitance | Cob | 65 | pF | VCE=10V, f=1MHz | 2 | ||
| Storage Time | tSTG | 500 | ns | See test circuit | 2 | ||
| Fall Time | tF | 20 | ns | See test circuit | 2 |
CAD (KiCad official)
- Symbol:
2SD1804L-T-TN3-R - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
2sd1804l-t-tn3-r-etched.step/2sd1804l-t-tn3-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sd1804l-t-tn3-r.step/2sd1804l-t-tn3-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (5 pp, sha256
9cd3a7c509413bda, retrieved 2026-10-17, tier: lcsc) - 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).
# 2SD1804L-T-TN3-R
**UTC Unisonic Tech** · Bipolar (BJT) · TO-252
2SD1804L-T-TN3-R from UTC Unisonic Tech, in a TO-252. 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 | B | passive | Base terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E). |
| 2 | C | passive | Collector terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E); the datasheet gives a maximum collector current of 8 A (12 A pulse) and collector dissipation of 1 W at TA=25°C for TO-251/TO-252. |
| 3 | E | passive | Emitter terminal of the NPN transistor, per the pin assignment for the TO-252 package (B C E). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## 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 Dissipation (TO-251/TO-252, TA=25°C) | PD | | | 1 | W | TA=25°C, TO-251/TO-252 | 2 |
| Collector Dissipation (TO-251/TO-252, TC=25°C) | PD | | | 20 | W | TC=25°C, TO-251/TO-252 | 2 |
| Collector-Base Voltage | VCBO | | | 60 | V | TA=25°C, unless otherwise specified | 2 |
| Collector-Emitter Voltage | VCEO | | | 50 | V | TA=25°C, unless otherwise specified | 2 |
| Emitter-Base Voltage | VEBO | | | 6 | V | TA=25°C, unless otherwise specified | 2 |
| Collector Current | IC | | | 8 | A | TA=25°C, unless otherwise specified | 2 |
| Collector Current (PULSE) | IC(PULSE) | | | 12 | A | TA=25°C, unless otherwise specified | 2 |
| Junction Temperature | TJ | | | 150 | °C | | 2 |
| Storage Temperature | TSTG | -55 | | 150 | °C | | 2 |
| Collector-Base Breakdown Voltage | BVCBO | 60 | | | V | IC=10μA, IE=0 | 2 |
| Collector-Emitter Breakdown Voltage | BVCEO | 50 | | | V | IC=1mA, RBE= | 2 |
| Emitter-Base Breakdown Voltage | BVEBO | 6 | | | V | IE=10μA, IC=0 | 2 |
| Collector Cutoff Current | ICBO | | | 1 | μA | VCB=40V, IE=0 | 2 |
| Emitter Cutoff Current | IEBO | | | 1 | μA | VEB=4V, IC=0 | 2 |
| DC Current Gain (hFE1) | hFE1 | 70 | | 400 | | VCE=2V, IC=0.5A | 2 |
| DC Current Gain (hFE2) | hFE2 | 35 | | | | VCE=2V, IC=6A | 2 |
| Collector-Emitter Saturation Voltage | VCE(SAT) | | 200 | 400 | mV | IC=4A, IB=0.2A | 2 |
| Base-Emitter Saturation Voltage | VBE(SAT) | | 0.95 | 1.3 | V | IC=4A, IB=0.2A | 2 |
| Gain-Bandwidth Product | fT | | 180 | | MHz | VCE=5V, IC=1A | 2 |
| Output Capacitance | Cob | | 65 | | pF | VCE=10V, f=1MHz | 2 |
| Storage Time | tSTG | | 500 | | ns | See test circuit | 2 |
| Fall Time | tF | | 20 | | ns | See test circuit | 2 |
## CAD (KiCad official)
- Symbol: `2SD1804L-T-TN3-R`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `2sd1804l-t-tn3-r-etched.step` / `2sd1804l-t-tn3-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sd1804l-t-tn3-r.step` / `2sd1804l-t-tn3-r.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UTC Unisonic Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175361764114432) (5 pp, sha256 `9cd3a7c509413bda`, retrieved 2026-10-17, tier: lcsc)
- **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/2sd1804l-t-tn3-r-datasheet.pdf)