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DB3W
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Shandong Jingdao Microelectronics Diacs Trigger Diode, SOD-123F. 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
markdownDB3W
Shandong Jingdao Microelectronics · Diacs Trigger Diode · SOD-123F
DB3W from Shandong Jingdao Microelectronics, in a SOD-123F. 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 | Cathode | passive | Cathode terminal of the silicon bidirectional trigger diode (diac); the device conducts in both polarities, so this terminal is one of two main terminals, and the datasheet gives no pin-specific electrical limit. |
| 2 | Anode | passive | Anode terminal of the silicon bidirectional trigger diode (diac); the device conducts in both polarities, so this terminal is one of two main terminals, and the datasheet gives no pin-specific electrical limit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SOD-123F |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakover Voltage (DB3W column) | VBO | 28 | 36 | V | at C = 22 nF, see diagram 1 | 1 | |
| Breakover Voltage Symmetry | [/+VBO/-/-VBO/] | 3 | V | at C = 22 nF, see diagram 1 | 1 | ||
| Dynamic Breakover Voltage | /△V/ | 5 | V | △I = [IBO to IF = 10 mA] | 1 | ||
| Output Voltage | VO | 5 | V | see diagram 2 | 1 | ||
| Breakover Current | IBO | 50 | μA | at C = 22 nF | 1 | ||
| Leakage Current | IB | 10 | μA | at VB=0.5VBOmax | 1 | ||
| Rise Time | tr | 2 | μs | see diagram 3 | 1 | ||
| Power Dissipation | Ptot | 150 | mW | TC = 100°C | 1 | ||
| Repetitive Peak On-state Current | ITRM | 2 | A | tp = 20 µs, f = 100 Hz | 1 | ||
| Operating Junction and Storage Temperature Range | Tj, Tstg | -40 | 125 | °C | 1 |
CAD (KiCad official)
- Symbol:
DB3W - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123F (KiCad packages3D, STEP)
- 3D model files:
db3w-etched.step/db3w-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);db3w.step/db3w.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (3 pp, sha256
237676a4dec61818, retrieved 2026-10-21, 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).