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HE2021A30HMR
Public Made by Adomby adom
HEERMICR Linear Voltage Regulators (LDO), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HE2021A30HMR
HEERMICR · Linear Voltage Regulators (LDO) · SOT-23
HE2021A30HMR from HEERMICR, 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, bottom-left in the SOT23-3 top view. |
| 2 | VOUT | power_out | Regulated 3.0V output (±1%, 2.97V to 3.03V) delivering up to 200mA. |
| 3 | VIN | power_in | Supply input accepting up to 35V (absolute maximum rating -0.3V to 35V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-23 |
| Category | Power Management ICs |
| 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 | 2.97 | 3 | 3.03 | V | VIN 8V, IOUT=10mA | 3 |
| Output Current | IOUT | 200 | mA | VIN 6V | 3 | ||
| Load Regulation | ΔVOUT | 40 | 60 | mV | VIN 8V, 1mA≤IOUT≤20mA | 3 | |
| Current Consumption | ISS | 2 | 3 | μA | VIN 8V, No load | 3 | |
| Input Voltage | VIN | 35 | V | 3 | |||
| Output Voltage Temperature Coefficient (printed ±0.12 converted to min/max) | -0.12 | 0.12 | mV/℃ | VIN 8V, IOUT=10mA, 0℃<Ta<100℃ | 3 | ||
| Supply Voltage | -0.3 | 35 | V | 2 | |||
| Operating Temperature | -40 | 85 | ℃ | 2 | |||
| Storage Temperature | -50 | 125 | ℃ | 2 | |||
| Thermal Resistance (Junction to Ambient), SOT23 | θJA | 500 | ℃/W | No ambient airflow, no heat sink | 2 | ||
| Power Dissipation, SOT23 | PD | 0.2 | W | Ta=25℃ | 2 |
CAD (KiCad official)
- Symbol:
HE2021A30HMR - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
he2021a30hmr-etched.step/he2021a30hmr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);he2021a30hmr.step/he2021a30hmr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HEERMICR datasheet (9 pp, sha256
8d7e2c2e64e2ae10, retrieved 2026-11-05, 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).
# HE2021A30HMR
**HEERMICR** · Linear Voltage Regulators (LDO) · SOT-23
HE2021A30HMR from HEERMICR, 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, bottom-left in the SOT23-3 top view. |
| 2 | VOUT | power_out | Regulated 3.0V output (±1%, 2.97V to 3.03V) delivering up to 200mA. |
| 3 | VIN | power_in | Supply input accepting up to 35V (absolute maximum rating -0.3V to 35V). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-23 |
| Category | Power Management ICs |
| 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 | 2.97 | 3 | 3.03 | V | VIN 8V, IOUT=10mA | 3 |
| Output Current | IOUT | | | 200 | mA | VIN 6V | 3 |
| Load Regulation | ΔVOUT | | 40 | 60 | mV | VIN 8V, 1mA≤IOUT≤20mA | 3 |
| Current Consumption | ISS | | 2 | 3 | μA | VIN 8V, No load | 3 |
| Input Voltage | VIN | | | 35 | V | | 3 |
| Output Voltage Temperature Coefficient (printed ±0.12 converted to min/max) | | -0.12 | | 0.12 | mV/℃ | VIN 8V, IOUT=10mA, 0℃<Ta<100℃ | 3 |
| Supply Voltage | | -0.3 | | 35 | V | | 2 |
| Operating Temperature | | -40 | | 85 | ℃ | | 2 |
| Storage Temperature | | -50 | | 125 | ℃ | | 2 |
| Thermal Resistance (Junction to Ambient), SOT23 | θJA | | | 500 | ℃/W | No ambient airflow, no heat sink | 2 |
| Power Dissipation, SOT23 | PD | | | 0.2 | W | Ta=25℃ | 2 |
## CAD (KiCad official)
- Symbol: `HE2021A30HMR`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `he2021a30hmr-etched.step` / `he2021a30hmr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `he2021a30hmr.step` / `he2021a30hmr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HEERMICR datasheet](docs/he2021a30hmr-datasheet.pdf) (9 pp, sha256 `8d7e2c2e64e2ae10`, retrieved 2026-11-05, 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/he2021a30hmr-datasheet.pdf)