component
DL4751A
Public Made by Adomby adom
LGE Zener Diodes, MELF. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownDL4751A
LGE · Zener Diodes · MELF
DL4751A from LGE, in a MELF. 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, marked by the cathode band on the MELF glass case; zener voltage for DL4751A is 30 V nominal at 8.5 mA test current. |
| 2 | A | passive | Anode terminal of the zener diode; solderable per MIL-STD-202 method 208, with 1.0 W power dissipation at Tamb 50 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | MELF |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance (A suffix) | VZ | -5 | 5 | % | Suffix A | 1 | |
| Forward voltage | VF | 1.2 | V | IF=200mA | 1 | ||
| Maximum dynamic impedance | ZZT | 40 | Ω | @IZT | 2 | ||
| Maximum knee dynamic impedance | ZZK | 1000 | Ω | @IZK=0.25mA | 2 | ||
| Maximum reverse leakage current | IR | 5 | µA | @VR=22.8V, Tamb=25 | 2 | ||
| Thermal resistance junction to ambient | RThJA | 170 | K/W | l=9.5mm, TL=constant | 1 | ||
| Power dissipation | PDiss | 1 | W | @Tamb 50, electrodes kept at ambient temperature | 1 | ||
| Junction temperature | TJ | 175 | °C | 1 | |||
| Storage temperature range | Ts | -55 | 175 | °C | 1 | ||
| Nominal zener voltage | VZ | 30 | V | @IZT | 2 | ||
| Test current | IZT | 8.5 | mA | 2 |
CAD (KiCad official)
- Symbol:
DL4751A - Footprint:
Diode_SMD:D_MELF - 3D model: MELF (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (3 pp, sha256
a224b6085d68189f, retrieved 2026-10-22, tier: lcsc) - 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).