component
1SMB5919B
Public Made by Adomby adom
OTW Zener Diodes, SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
1SMB5919B
OTW · Zener Diodes · SMB
1SMB5919B from OTW, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OTW |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener voltage (min / nom / max) | VZ | 5.32 | 5.6 | 5.88 | V | @ IZT = 66.9 mA; measured at 25 °C ambient (Note 2) | 2 |
| Maximum Zener impedance | ZZT | 2 | Ω | @ IZT = 66.9 mA; Iz(AC) = 0.1 Iz(DC), 60 Hz (Note 3) | 2 | ||
| Maximum Zener impedance at knee current | ZZK | 250 | Ω | @ IZK = 1 mA | 2 | ||
| Reverse leakage current | IR | 5 | µA | @ VR = 3 V | 2 | ||
| Maximum DC Zener current | IZM | 267 | mA | DC | 2 | ||
| Forward voltage | VF | 1.5 | V | @ IF = 200 mA (DC), for all types | 1 | ||
| Zener voltage tolerance (B suffix) | -5 | 5 | % | Type number designation B = 5% (Note 1) | 1 | ||
| DC power dissipation at lead temperature | PD | 3 | W | TL = 75 °C, measured at zero lead length (Note 1) | 1 | ||
| Derating of DC power dissipation above TL = 75 °C | PD | 40 | mW/°C | Above TL = 75 °C | 1 | ||
| Maximum steady state power dissipation | PD | 550 | mW | TA = 25 °C | 1 | ||
| Derating of steady state power dissipation above 25 °C | PD | 4.4 | mW/°C | Above TA = 25 °C | 1 | ||
| Junction to ambient thermal resistance | RthJA | 226 | °C/W | Junction to ambient | 1 | ||
| Junction to lead thermal resistance | RthJL | 25 | °C/W | Junction to lead | 1 | ||
| Junction temperature range | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
1SMB5919B - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
1smb5919b-etched.step/1smb5919b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1smb5919b.step/1smb5919b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OTW datasheet (3 pp, sha256
2a717566c35b92b4, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).
# 1SMB5919B
**OTW** · Zener Diodes · SMB
1SMB5919B from OTW, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OTW |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener voltage (min / nom / max) | VZ | 5.32 | 5.6 | 5.88 | V | @ IZT = 66.9 mA; measured at 25 °C ambient (Note 2) | 2 |
| Maximum Zener impedance | ZZT | | | 2 | Ω | @ IZT = 66.9 mA; Iz(AC) = 0.1 Iz(DC), 60 Hz (Note 3) | 2 |
| Maximum Zener impedance at knee current | ZZK | | | 250 | Ω | @ IZK = 1 mA | 2 |
| Reverse leakage current | IR | | | 5 | µA | @ VR = 3 V | 2 |
| Maximum DC Zener current | IZM | | | 267 | mA | DC | 2 |
| Forward voltage | VF | | | 1.5 | V | @ IF = 200 mA (DC), for all types | 1 |
| Zener voltage tolerance (B suffix) | | -5 | | 5 | % | Type number designation B = 5% (Note 1) | 1 |
| DC power dissipation at lead temperature | PD | | | 3 | W | TL = 75 °C, measured at zero lead length (Note 1) | 1 |
| Derating of DC power dissipation above TL = 75 °C | PD | | 40 | | mW/°C | Above TL = 75 °C | 1 |
| Maximum steady state power dissipation | PD | | | 550 | mW | TA = 25 °C | 1 |
| Derating of steady state power dissipation above 25 °C | PD | | 4.4 | | mW/°C | Above TA = 25 °C | 1 |
| Junction to ambient thermal resistance | RthJA | | 226 | | °C/W | Junction to ambient | 1 |
| Junction to lead thermal resistance | RthJL | | 25 | | °C/W | Junction to lead | 1 |
| Junction temperature range | TJ | -55 | | 150 | °C | | 1 |
| Storage temperature range | TSTG | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `1SMB5919B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `1smb5919b-etched.step` / `1smb5919b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1smb5919b.step` / `1smb5919b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [OTW datasheet](docs/1smb5919b-datasheet.pdf) (3 pp, sha256 `2a717566c35b92b4`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/1smb5919b-datasheet.pdf)