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SE8733X2-HF
Public Made by Adomby adom
Seaward Elec Linear Voltage Regulators (LDO), 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
markdownSE8733X2-HF
Seaward Elec · Linear Voltage Regulators (LDO) · SOT-23
SE8733X2-HF from Seaward Elec, 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 1 in the G-I-O pin order that applies to this MPN (no B suffix). |
| 2 | VIN | power_in | Power input, 4.5V to 40V supply range (absolute maximum 45V), with a 10uF capacitor to GND placed close to the pin. |
| 3 | VOUT | power_out | Regulated output, 3.3V for this part, with a recommended 10uF output capacitor (1uF minimum for stability). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | VIN | 4.5 | 40 | V | VIN=12V; Tj=25℃ | 4 | |
| Output Voltage Accuracy (1% grade) | VOUT | -1 | 1 | % | IOUT=10mA | 4 | |
| Output Voltage Accuracy (2% row) | VOUT | -2 | 2 | % | IOUT=10mA | 4 | |
| Quiescent Current | IQ | 4.5 | 8 | μA | 4 | ||
| Output Current | IOUT | 150 | 200 | mA | 4 | ||
| Dropout Voltage | VDROP | 60 | mV | IOUT=10mA, ΔVOUT= - VOUT *2% | 4 | ||
| Dropout Voltage | VDROP | 600 | mV | IOUT=100mA, ΔVOUT= - VOUT *2% | 4 | ||
| Load Regulation | VLR | 20 | mV | 1mA ≤ IOUT ≤ 100mA | 4 | ||
| Line Regulation | VSR | 0.08 | %/V | IOUT=1mA, VIN=(VOUT +4V) to 45V | 4 | ||
| Power Supply Rejection Ratio | PSRR | 60 | dB | Vin=10V, VPP=0.5V, Iout=1mA, Freq=100Hz | 4 | ||
| Power Supply Rejection Ratio | PSRR | 50 | dB | Vin=10V, VPP=0.5V, Iout=1mA, Freq=1KHz | 4 | ||
| Power Supply Rejection Ratio | PSRR | 40 | dB | Vin=10V, VPP=0.5V, Iout=1mA, Freq=10KHz | 4 | ||
| Current Limit | ILIMIT | 350 | mA | VIN=(VOUT +1V) to 30V, RLOAD=VOUT /1A | 4 | ||
| Thermal Protection | TSHDN | 165 | ℃ | 4 | |||
| Output Voltage Temperature Coefficient | TCVOUT | -100 | 100 | ppm/℃ | IOUT=10mA, -40℃≤TAMB≤100℃ | 4 | |
| Input Voltage | VIN | -0.3 | 45 | V | 3 | ||
| Output Voltage | VOUT | -0.3 | 6.5 | V | 3 | ||
| Junction Temperature | TJ | -40 | 150 | ℃ | 3 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 3 | ||
| Package Lead Soldering Temperature | Tsolder | 260 | ℃ | 10s | 3 | ||
| ESD Machine Mode | ESD MM | 200 | V | 3 | |||
| ESD Human Body Mode | ESD HBM | 3000 | V | 3 | |||
| Power Consumption | PD | 250 | mW | SOT23 | 3 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 280 | ℃/W | SOT23 | 3 | ||
| VIN Supply Voltage | VIN | 4.5 | 40 | V | 3 | ||
| Operating Temperature | TOPT | -40 | 105 | ℃ | 3 | ||
| Thermal Resistance on PCB | RθJA | 45 | ℃/W | 3 |
CAD (KiCad official)
- Symbol:
SE8733X2-HF - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
se8733x2-hf-etched.step/se8733x2-hf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);se8733x2-hf.step/se8733x2-hf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seaward Elec datasheet (10 pp, sha256
0503c9eda718bcb8, retrieved 2026-10-22, 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).