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SE8117T18HF
Public Made by Adomby adom
Seaward Elec Linear Voltage Regulators (LDO), SOT-223-3. 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
markdownSE8117T18HF
Seaward Elec · Linear Voltage Regulators (LDO) · SOT-223-3
SE8117T18HF from Seaward Elec, in a SOT-223-3. 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 | ADJ/GND | power_in | A resistor divider from this pin to the VOUT pin and ground sets the output voltage, and the pin is ground only in fixed-mode versions. |
| 2 | OUT | power_out | The regulator output requires a minimum 4.7µF capacitor with 0.15Ω ≤ ESR ≤ 0.5Ω connected from this pin to ground for stability. |
| 3 | IN | power_in | The input must be kept at least 1.3V above VOUT for proper regulation, and a minimum 4.7µF capacitor with 0.15Ω ≤ ESR ≤0.5Ω must be connected from this pin to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Seaward Elec |
| Package | SOT-223-3 |
| 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 (SE8117T-18) | VO | 1.764 | 1.8 | 1.836 | V | VIN,MAX ≤ 9V, VIN,MIN, VOUT = 2V, IOUT = 10mA, CIN = 10µF, COUT = 22µF, TA = 25°C, unless otherwise specified | 3 |
| Quiescent Current (Fixed Output Version) | IQ | 2.7 | 5 | mA | Fixed Output Version | 3 | |
| Adjust Pin Current (GND Current) | IADJ (IGND) | 50 | 120 | μA | 3 | ||
| Adjust Pin Current Change | ΔIADJ | 0.2 | 5 | μA | VOUT + 1.5V < VIN < 9V | 3 | |
| Dropout Voltage | VD | 1.2 | 1.25 | V | IOUT = 0.5A | 3 | |
| Minimum Load Current | IO | 0.4 | 5 | mA | 3 | ||
| Current Limit | ICL | 1 | 1.35 | A | 3 | ||
| Input Supply Voltage | VIN | 18 | V | 2 | |||
| Thermal Resistance Junction to Ambient (SOT-223) | θJA | 120 | °C/W | SOT-223, without heat sink | 2 | ||
| Operating Junction Temperature Range | TJ | -40 | 125 | °C | 2 | ||
| Storage Temperature Range | TSTG | -40 | 150 | °C | 2 | ||
| Lead Temperature (Soldering) | TLEAD | 260 | °C | Soldering 10 Sec | 2 | ||
| Maximum Junction Temperature | TMJ | 150 | °C | 2 |
CAD (KiCad official)
- Symbol:
SE8117T18HF - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223-3 (KiCad packages3D, STEP)
- 3D model files:
se8117t18hf-etched.step/se8117t18hf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);se8117t18hf.step/se8117t18hf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Seaward Elec datasheet (9 pp, sha256
23ae86778a865694, retrieved 2026-11-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).