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PMEG40T20EP-QX
Public Made by Adomby adom
Nexperia Schottky Diodes, SOD-128. 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
markdownPMEG40T20EP-QX
Nexperia · Schottky Diodes · SOD-128
PMEG40T20EP-QX from Nexperia, in a SOD-128. 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 | K | passive | Cathode terminal of the Schottky barrier rectifier; the cathode tab is the thermal path referenced for Rth(j-sp) of 12 K/W maximum, and a 1 cm² cathode mounting pad is the condition for the 1.2 W Ptot rating. |
| 2 | A | passive | Anode terminal of the Schottky barrier rectifier; the datasheet gives no separate electrical limit for this pin, and the device ratings apply (VR ≤ 40 V, IF ≤ 2.8 A). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-128 |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| reverse voltage | VR | 40 | V | Tj = 25 °C | 3 | ||
| forward current | IF | 2.8 | A | δ = 1; Tsp ≤ 160 °C | 3 | ||
| average forward current | IF(AV) | 2 | A | δ = 0.5; f = 20 kHz; square wave; Tsp ≤ 165 °C | 3 | ||
| non-repetitive peak forward current | IFSM | 20 | A | tp = 8 ms; square wave; Tj(init) = 25 °C | 3 | ||
| total power dissipation | Ptot | 0.75 | W | Tamb ≤ 25 °C | 3 | ||
| total power dissipation (footnote [2] mounting) | Ptot | 1.2 | W | 3 | |||
| junction temperature | Tj | 175 | °C | 3 | |||
| ambient temperature | Tamb | -55 | 175 | °C | 3 | ||
| storage temperature | Tstg | -65 | 175 | °C | 3 | ||
| thermal resistance from junction to ambient in free air | Rth(j-a) | 200 | K/W | Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint. | 3 | ||
| thermal resistance from junction to ambient, mounting pad for cathode 1 cm² | 120 | K/W | Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for cathode 1 cm². | 3 | |||
| thermal resistance from junction to solder point | Rth(j-sp) | 12 | K/W | Soldering point of cathode tab. | 3 | ||
| reverse breakdown voltage | V(BR)R | 40 | V | IR = 1 mA; pulsed; Tj = 25 °C | 4 | ||
| forward voltage | VF | 310 | 360 | mV | IF = 0.1 A; Tj = 25 °C; pulsed | 4 | |
| forward voltage | VF | 365 | 420 | mV | IF = 0.5 A; Tj = 25 °C; pulsed | 4 | |
| forward voltage | VF | 400 | 460 | mV | IF = 1 A; Tj = 25 °C; pulsed | 4 | |
| forward voltage | VF | 445 | 515 | mV | IF = 2 A; Tj = 25 °C; pulsed | 4 | |
| reverse current | IR | 3 | 11.5 | µA | VR = 10 V; Tj = 25 °C; pulsed | 4 | |
| reverse current | IR | 6 | 22 | µA | VR = 40 V; Tj = 25 °C; pulsed | 4 |
CAD (KiCad official)
- Symbol:
PMEG40T20EP-QX - Footprint:
Diode_SMD:D_SOD-128 - 3D model: SOD-128 (KiCad packages3D, STEP)
- 3D model files:
pmeg40t20ep-qx-etched.step/pmeg40t20ep-qx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pmeg40t20ep-qx.step/pmeg40t20ep-qx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
611cfd5496f6cdeb, retrieved 2026-10-15, 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).