component
LM7812CT
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
LM7812CT
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3
LM7812CT from HGSEMI, in a TO-220-3. 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 | INPUT | power_in | Unregulated input voltage; absolute maximum 35 V, and for the 12 V part (LM7812C) 14.5 to 27 V keeps the output in regulation at full load range. |
| 2 | OUTPUT | power_out | Regulated 12 V output (11.5 to 12.5 V at TJ = 25°C) delivering up to 1.5 A with internal current limiting and thermal shutdown. |
| 3 | GND | power_in | Ground reference common to input and output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-220-3 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 11.5 | 12 | 12.5 | V | TJ = 25°C | 8 |
| Output Voltage (over line and load) | VO | 11.4 | 12 | 12.6 | V | IO = 5 mA to 1 A, PO ≤ 15W, VI = 14.5 to 27 V | 8 |
| Line Regulation | ΔVO(*) | 240 | mV | VI = 14.5 to 30 V, TJ = 25°C | 8 | ||
| Line Regulation | ΔVO(*) | 120 | mV | VI = 16 to 22 V, TJ = 25°C | 8 | ||
| Load Regulation | ΔVO(*) | 240 | mV | IO = 5 mA to 1.5 A, TJ = 25°C | 8 | ||
| Load Regulation | ΔVO(*) | 120 | mV | IO = 250 to 750 mA, TJ = 25°C | 8 | ||
| Quiescent Current | Id | 8 | mA | TJ = 25°C | 8 | ||
| Quiescent Current Change | ΔId | 0.5 | mA | IO = 5 mA to 1 A | 8 | ||
| Quiescent Current Change | ΔId | 1 | mA | VI = 14.5 to 30 V | 8 | ||
| Output Voltage Drift | ΔVO/ΔT | -1 | mV/°C | IO = 5 mA | 8 | ||
| Output Noise Voltage | eN | 75 | μV/VO | B = 10Hz to 100KHz, TJ = 25°C | 8 | ||
| Supply Voltage Rejection | SVR | 55 | dB | VI = 15 to 25 V, f = 120Hz | 8 | ||
| Dropout Voltage | Vd | 2 | V | IO = 1 A, TJ = 25°C | 8 | ||
| Output Resistance | RO | 18 | mΩ | f = 1 KHz | 8 | ||
| Short Circuit Current | Isc | 0.35 | A | VI = 35 V, TJ = 25°C | 8 | ||
| Short Circuit Peak Current | Iscp | 2.2 | A | TJ = 25°C | 8 | ||
| DC Input Voltage | VI | 35 | V | 3 | |||
| Storage Temperature Range | Tstg | -65 | 150 | °C | 3 | ||
| Lead Temperature (Soldering) | TLEAD | 245 | °C | Soldering, 10 seconds | 3 | ||
| Operating Junction Temperature Range | Top | 0 | 125 | °C | 3 | ||
| Junction-to-ambient thermal resistance (TO-220) | RθJA | 23.9 | °C/W | TO-220 package column | 3 | ||
| Junction-to-case (top) thermal resistance (TO-220) | RθJC(top) | 16.7 | °C/W | TO-220 package column | 3 | ||
| Junction-to-board thermal resistance (TO-220) | RθJB | 5.3 | °C/W | TO-220 package column | 3 | ||
| Junction-to-case (bottom) thermal resistance (TO-220) | RθJC(bot) | 1.7 | °C/W | TO-220 package column | 3 | ||
| Junction-to-top characterization parameter (TO-220) | ΨJT | 3.2 | °C/W | TO-220 package column | 3 | ||
| Junction-to-board characterization parameter (TO-220) | ΨJB | 5.3 | °C/W | TO-220 package column | 3 |
CAD (KiCad official)
- Symbol:
LM7812CT - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files:
lm7812ct-etched.step/lm7812ct-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm7812ct.step/lm7812ct.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (16 pp, sha256
f70b2e22c7f5c571, retrieved 2026-10-19, 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).
# LM7812CT
**HGSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3
LM7812CT from HGSEMI, in a TO-220-3. 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 | INPUT | power_in | Unregulated input voltage; absolute maximum 35 V, and for the 12 V part (LM7812C) 14.5 to 27 V keeps the output in regulation at full load range. |
| 2 | OUTPUT | power_out | Regulated 12 V output (11.5 to 12.5 V at TJ = 25°C) delivering up to 1.5 A with internal current limiting and thermal shutdown. |
| 3 | GND | power_in | Ground reference common to input and output. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-220-3 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 11.5 | 12 | 12.5 | V | TJ = 25°C | 8 |
| Output Voltage (over line and load) | VO | 11.4 | 12 | 12.6 | V | IO = 5 mA to 1 A, PO ≤ 15W, VI = 14.5 to 27 V | 8 |
| Line Regulation | ΔVO(*) | | 240 | | mV | VI = 14.5 to 30 V, TJ = 25°C | 8 |
| Line Regulation | ΔVO(*) | | 120 | | mV | VI = 16 to 22 V, TJ = 25°C | 8 |
| Load Regulation | ΔVO(*) | | 240 | | mV | IO = 5 mA to 1.5 A, TJ = 25°C | 8 |
| Load Regulation | ΔVO(*) | | 120 | | mV | IO = 250 to 750 mA, TJ = 25°C | 8 |
| Quiescent Current | Id | | 8 | | mA | TJ = 25°C | 8 |
| Quiescent Current Change | ΔId | | 0.5 | | mA | IO = 5 mA to 1 A | 8 |
| Quiescent Current Change | ΔId | | 1 | | mA | VI = 14.5 to 30 V | 8 |
| Output Voltage Drift | ΔVO/ΔT | | -1 | | mV/°C | IO = 5 mA | 8 |
| Output Noise Voltage | eN | | 75 | | μV/VO | B = 10Hz to 100KHz, TJ = 25°C | 8 |
| Supply Voltage Rejection | SVR | | 55 | | dB | VI = 15 to 25 V, f = 120Hz | 8 |
| Dropout Voltage | Vd | | 2 | | V | IO = 1 A, TJ = 25°C | 8 |
| Output Resistance | RO | | 18 | | mΩ | f = 1 KHz | 8 |
| Short Circuit Current | Isc | | 0.35 | | A | VI = 35 V, TJ = 25°C | 8 |
| Short Circuit Peak Current | Iscp | | 2.2 | | A | TJ = 25°C | 8 |
| DC Input Voltage | VI | | | 35 | V | | 3 |
| Storage Temperature Range | Tstg | -65 | | 150 | °C | | 3 |
| Lead Temperature (Soldering) | TLEAD | | | 245 | °C | Soldering, 10 seconds | 3 |
| Operating Junction Temperature Range | Top | 0 | | 125 | °C | | 3 |
| Junction-to-ambient thermal resistance (TO-220) | RθJA | | 23.9 | | °C/W | TO-220 package column | 3 |
| Junction-to-case (top) thermal resistance (TO-220) | RθJC(top) | | 16.7 | | °C/W | TO-220 package column | 3 |
| Junction-to-board thermal resistance (TO-220) | RθJB | | 5.3 | | °C/W | TO-220 package column | 3 |
| Junction-to-case (bottom) thermal resistance (TO-220) | RθJC(bot) | | 1.7 | | °C/W | TO-220 package column | 3 |
| Junction-to-top characterization parameter (TO-220) | ΨJT | | 3.2 | | °C/W | TO-220 package column | 3 |
| Junction-to-board characterization parameter (TO-220) | ΨJB | | 5.3 | | °C/W | TO-220 package column | 3 |
## CAD (KiCad official)
- Symbol: `LM7812CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files: `lm7812ct-etched.step` / `lm7812ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm7812ct.step` / `lm7812ct.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707370899058688) (16 pp, sha256 `f70b2e22c7f5c571`, retrieved 2026-10-19, 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/lm7812ct-datasheet.pdf)