component
HE2021A50HMR
Public Made by Adomby adom
HEERMICR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHE2021A50HMR
HEERMICR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
HE2021A50HMR 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, shown at bottom-left of the SOT23-3 top view; the datasheet gives no separate ground current limit beyond a typical 2.0 µA, max 5.0 µA no-load current consumption for the 5.0V type. |
| 2 | VOUT | power_out | Regulated 5.0V output (4.95V to 5.05V at IOUT=10mA), rated for 200mA output current. |
| 3 | VIN | power_in | Supply input, absolute maximum -0.3V to 35V, with an input voltage rating of 35V maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| 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 | 4.95 | 5 | 5.05 | V | VIN=8V; IOUT=10mA | 5 |
| Load Regulation | ΔVOUT | 40 | 60 | mV | VIN=8V; 1mA≤IOUT≤20mA | 5 | |
| Current Consumption | ISS | 2 | 5 | μA | VIN=8V; No load | 5 | |
| Input Voltage | VIN | 35 | V | 5 | |||
| 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 | Assume no ambient airflow, no heat sink | 2 | ||
| Power Dissipation (SOT23) | PD | 0.2 | W | PD is measured at Ta=25℃ | 2 |
CAD (KiCad official)
- Symbol:
HE2021A50HMR - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
he2021a50hmr-etched.step/he2021a50hmr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);he2021a50hmr.step/he2021a50hmr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HEERMICR datasheet (9 pp, sha256
8d7e2c2e64e2ae10, retrieved 2026-10-19, 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).