component
MD7141H
Public Made by Adomby adom
Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-23-3L. 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
markdownMD7141H
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-23-3L
MD7141H from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 terminal (接地端). |
| 2 | VDD | power_in | Power input terminal, rated up to 32V absolute maximum input voltage, with 1.0 µF or larger input capacitor recommended. |
| 3 | VOUT | power_out | Regulated 4.1V ±3% output terminal for MD7141H, up to 30mA with 30mA short-circuit limit, requiring a 2.2 µF or larger output capacitor with 0.5-5Ω ESR to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-3L |
| 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 | 3.997 | 4.1 | 4.223 | V | VIN=6.1V, IOUT=10mA | 3 |
| Output current | IOUT | 25 | 30 | mA | VIN=6.1V | 3 | |
| Dropout voltage | Vdrop | 40 | 60 | mV | IOUT=1mA | 3 | |
| Line regulation | ΔVOUT/ΔVIN·VOUT | 0.05 | 0.2 | %/V | 5.1V≤VIN≤32V, IOUT=1mA | 3 | |
| Load regulation | ΔVOUT2 | 60 | 100 | mV | VIN=6.1V, 1.0mA≤IOUT≤30mA | 3 | |
| Output voltage temperature coefficient | ΔVOUT/ΔTa·VOUT | -100 | 50 | 100 | ppm/℃ | VIN=6.1V, IOUT=10mA, -40℃≤Ta≤85℃ | 3 |
| Quiescent current | ISS | 1.2 | 5 | uA | VIN=32V, no load | 3 | |
| Input voltage | Vmax | 32 | V | 3 | |||
| Input voltage (absolute maximum) | VIN | 32 | V | Ta=25℃ | 2 | ||
| Power dissipation SOT-23-3 | PD | 250 | mW | SOT_23-3/5, Ta=25℃ | 2 | ||
| Operating ambient temperature | Topr | -40 | 85 | ℃ | 2 | ||
| Storage temperature | Tstg | -40 | 125 | ℃ | 2 | ||
| Output short-circuit current | Ishort | 30 | mA | Vout=0V | 3 | ||
| Input capacitor | CIN | 1 | µF | 5 | |||
| Output capacitor (tantalum) | CL | 2.2 | µF | tantalum capacitor | 5 |
CAD (KiCad official)
- Symbol:
MD7141H - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
md7141h-etched.step/md7141h-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md7141h.step/md7141h.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (13 pp, sha256
0de18d8f469d00d1, retrieved 2026-10-23, 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), 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).