component
US3DB
Public Made by Adomby adom
LangJie Fast Recovery / High Efficiency Diodes, DO-214AA. 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
markdownUS3DB
LangJie · Fast Recovery / High Efficiency Diodes · DO-214AA
US3DB from LangJie, in a DO-214AA. 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 laser band on the DO-214AA body; the 200 V US3DB blocks reverse voltage up to VRRM/VDC 200 V at this terminal. |
| 2 | A | passive | Anode terminal, opposite the laser band; carries up to 3.0 A average forward current (IF(AV) at TA=100℃) for the US3DB. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LangJie |
| Package | DO-214AA |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Repetitive Peak Reverse Voltage | VRRM | 200 | Volts | 1 | |||
| Maximum RMS Voltage | VRMS | 140 | Volts | 1 | |||
| Maximum DC Blocking Voltage | VDC | 200 | Volts | 1 | |||
| Maximum Average Forward Rectified Current | I(AV) | 3 | Amps | TA=100℃ | 1 | ||
| Peak Forward Surge Current | IFSM | 80 | Amps | 8.3ms single half sine wave superimposed on rated load (JEDEC Method) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 1 | Volts | at 3.0A | 1 | ||
| Maximum DC Reverse Current | IR | 5 | µA | TA = 25℃, rated DC blocking voltage | 1 | ||
| Maximum DC Reverse Current | IR | 100 | µA | TA = 125℃, rated DC blocking voltage | 1 | ||
| Maximum Reverse Recovery Time | TRR | 50 | nS | If=0.5A, Ir=1.0A, Irr=0.25A | 1 | ||
| Operating Junction Temperature | TJ | -55 | 150 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 | ||
| Typical Junction Capacitance | CJ | 50 | pF | Measured at 1.0MHz and applied reverse voltage of 4.0V | 1 | ||
| Typical Thermal Resistance, junction to ambient | RθJA | 70 | ℃/W | Unit mounted on P.C.B. with 0.3×0.3″(8.0 × 8.0mm) copper pads | 1 | ||
| Typical Thermal Resistance, junction to lead | RθJL | 28 | ℃/W | Unit mounted on P.C.B. with 0.3×0.3″(8.0 × 8.0mm) copper pads | 1 |
CAD (KiCad official)
- Symbol:
US3DB - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA (KiCad packages3D, STEP)
- 3D model files:
us3db-etched.step/us3db-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);us3db.step/us3db.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LangJie datasheet (6 pp, sha256
791e2454b0f6cc4c, 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).