component
1SMB5925B
Public Made by Adomby adom
LGE Zener Diodes, SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
1SMB5925B
LGE · Zener Diodes · SMB
1SMB5925B from LGE, in a SMB. 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, indicated by the polarity band; the zener (10 V at 37.5 mA for 1SMB5925B) is reverse-biased with this pin positive. |
| 2 | A | passive | Anode; the datasheet gives no pin numbers, only that the cathode is marked by the polarity band, so the numbering is assumed. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | SMB |
| 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 (suffix B) | VZ | -5 | 5 | % | Suffix B indicates ±5% tolerance | 2 | |
| Nominal Zener Voltage | VZ | 10 | V | @ IZT = 37.5 mA | 2 | ||
| Zener Test Current | IZT | 37.5 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 4.5 | Ω | @ IZT | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 500 | Ω | @ IZK = 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | μA | @ VR = 8.0 V | 2 | ||
| Maximum DC Zener Current | IZM | 150 | mA | 2 | |||
| Maximum Forward Voltage | VF | 1.5 | V | IF = 200 mA | 1 | ||
| Steady State Power Dissipation | PD | 3 | W | TL = 75°C, measured at zero lead length | 1 | ||
| Power Derating Above 75 °C | 40 | mW/°C | Derate above 75 °C | 1 | |||
| Steady State Power Dissipation | PD | 550 | mW | Ta = 25 °C, measured at zero lead length | 1 | ||
| Power Derating Above 25 °C | 4.4 | mW/°C | Derate above 25 °C | 1 | |||
| Junction Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | Tstg | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 25 | °C/W | 1 | |||
| Thermal Resistance Junction to Ambient | RθJA | 226 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
1SMB5925B - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
1smb5925b-etched.step/1smb5925b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1smb5925b.step/1smb5925b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (3 pp, sha256
075448497bd604f2, 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).
# 1SMB5925B
**LGE** · Zener Diodes · SMB
1SMB5925B from LGE, in a SMB. 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, indicated by the polarity band; the zener (10 V at 37.5 mA for 1SMB5925B) is reverse-biased with this pin positive. |
| 2 | A | passive | Anode; the datasheet gives no pin numbers, only that the cathode is marked by the polarity band, so the numbering is assumed. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | SMB |
| 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 (suffix B) | VZ | -5 | | 5 | % | Suffix B indicates ±5% tolerance | 2 |
| Nominal Zener Voltage | VZ | | 10 | | V | @ IZT = 37.5 mA | 2 |
| Zener Test Current | IZT | | 37.5 | | mA | | 2 |
| Maximum Zener Impedance | ZZT | | | 4.5 | Ω | @ IZT | 2 |
| Maximum Zener Impedance (knee) | ZZK | | | 500 | Ω | @ IZK = 0.25 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | μA | @ VR = 8.0 V | 2 |
| Maximum DC Zener Current | IZM | | | 150 | mA | | 2 |
| Maximum Forward Voltage | VF | | | 1.5 | V | IF = 200 mA | 1 |
| Steady State Power Dissipation | PD | | | 3 | W | TL = 75°C, measured at zero lead length | 1 |
| Power Derating Above 75 °C | | | | 40 | mW/°C | Derate above 75 °C | 1 |
| Steady State Power Dissipation | PD | | | 550 | mW | Ta = 25 °C, measured at zero lead length | 1 |
| Power Derating Above 25 °C | | | | 4.4 | mW/°C | Derate above 25 °C | 1 |
| Junction Temperature Range | TJ | -65 | | 150 | °C | | 1 |
| Storage Temperature Range | Tstg | -65 | | 150 | °C | | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 25 | | °C/W | | 1 |
| Thermal Resistance Junction to Ambient | RθJA | | 226 | | °C/W | | 1 |
## CAD (KiCad official)
- Symbol: `1SMB5925B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `1smb5925b-etched.step` / `1smb5925b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1smb5925b.step` / `1smb5925b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [LGE datasheet](docs/1smb5925b-datasheet.pdf) (3 pp, sha256 `075448497bd604f2`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/1smb5925b-datasheet.pdf)