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HT33-Q
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QNH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HT33-Q
QNH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
HT33-Q from QNH, in a SOT-23. 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 | GND | power_in | Ground pin of the regulator. |
| 2 | VOUT | power_out | Regulated 3.3V output (HT33), 100mA typical output current, requires an output capacitor larger than 2.2µF to ground. |
| 3 | VIN | power_in | Supply input, withstands up to 24V (absolute maximum -0.3 to +24V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QNH |
| Package | SOT-23 |
| 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 | VOUT | 3.234 | 3.3 | 3.366 | V | VIN=VOUT+2.0V, IOUT=10mA | 7 |
| Output current | IOUT | 70 | 100 | mA | VIN=VOUT+2.0V | 7 | |
| Load regulation | △VOUT | 5 | 60 | mV | VIN=VOUT+2.0V, 1mA≤IOUT≤50mA | 7 | |
| Dropout voltage | VDIF | 25 | 55 | mV | IOUT=1mA, ΔVOUT=2% | 7 | |
| Quiescent current | ISS | 1.5 | 3 | μA | No load | 7 | |
| Line regulation | △VOUT/VOUT*△VIN | 0.2 | %/V | VOUT+1.0V≤VIN≤24V, IOUT=1mA | 7 | ||
| Input voltage | VIN | 24 | V | 7 | |||
| Absolute maximum input voltage | VIN | -0.3 | 24 | V | 4 | ||
| Storage temperature | TSTG | -50 | 125 | ℃ | 4 | ||
| Operating temperature | TA | -40 | 85 | ℃ | 4 | ||
| Thermal resistance, junction to ambient (SOT23-3) | θJA | 500 | ℃/W | SOT23-3 package | 4 | ||
| Power dissipation (SOT23-3) | PD | 200 | mW | SOT23-3 package | 4 | ||
| Output voltage temperature coefficient | △VOUT/△TA*VOUT | 100 | ppm/℃ | VIN=VOUT+2.0V, IOUT=10mA, -40℃≤TA≤85℃ | 7 |
CAD (KiCad official)
- Symbol:
HT33-Q - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ht33-q-etched.step/ht33-q-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht33-q.step/ht33-q.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QNH datasheet (13 pp, sha256
c8be6bf11c973fad, retrieved 2026-10-17, 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-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).
# HT33-Q
**QNH** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
HT33-Q from QNH, in a SOT-23. 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 | GND | power_in | Ground pin of the regulator. |
| 2 | VOUT | power_out | Regulated 3.3V output (HT33), 100mA typical output current, requires an output capacitor larger than 2.2µF to ground. |
| 3 | VIN | power_in | Supply input, withstands up to 24V (absolute maximum -0.3 to +24V). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QNH |
| Package | SOT-23 |
| 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 | VOUT | 3.234 | 3.3 | 3.366 | V | VIN=VOUT+2.0V, IOUT=10mA | 7 |
| Output current | IOUT | 70 | 100 | | mA | VIN=VOUT+2.0V | 7 |
| Load regulation | △VOUT | | 5 | 60 | mV | VIN=VOUT+2.0V, 1mA≤IOUT≤50mA | 7 |
| Dropout voltage | VDIF | | 25 | 55 | mV | IOUT=1mA, ΔVOUT=2% | 7 |
| Quiescent current | ISS | | 1.5 | 3 | μA | No load | 7 |
| Line regulation | △VOUT/VOUT*△VIN | | | 0.2 | %/V | VOUT+1.0V≤VIN≤24V, IOUT=1mA | 7 |
| Input voltage | VIN | | | 24 | V | | 7 |
| Absolute maximum input voltage | VIN | -0.3 | | 24 | V | | 4 |
| Storage temperature | TSTG | -50 | | 125 | ℃ | | 4 |
| Operating temperature | TA | -40 | | 85 | ℃ | | 4 |
| Thermal resistance, junction to ambient (SOT23-3) | θJA | | | 500 | ℃/W | SOT23-3 package | 4 |
| Power dissipation (SOT23-3) | PD | | | 200 | mW | SOT23-3 package | 4 |
| Output voltage temperature coefficient | △VOUT/△TA*VOUT | | 100 | | ppm/℃ | VIN=VOUT+2.0V, IOUT=10mA, -40℃≤TA≤85℃ | 7 |
## CAD (KiCad official)
- Symbol: `HT33-Q`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ht33-q-etched.step` / `ht33-q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ht33-q.step` / `ht33-q.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [QNH datasheet](docs/ht33-q-datasheet.pdf) (13 pp, sha256 `c8be6bf11c973fad`, retrieved 2026-10-17, 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-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/ht33-q-datasheet.pdf)