component
SZ455B
Public Made by Adomby adom
DOWO Zener Diodes, DO-214AC(SMA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZ455B
DOWO · Zener Diodes · DO-214AC(SMA)
SZ455B from DOWO, in a DO-214AC(SMA). 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 color band on the SMA (DO-214AC) body; the SZ455B has a nominal Zener voltage of 5.1 V at IZT = 98.0 mA. |
| 2 | A | passive | Anode, the end opposite the color band; the device dissipates 2.0 W at TL = 75 °C and has a forward voltage of 1.2 V maximum at IF = 200 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | DO-214AC(SMA) |
| 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 | VZ | -5 | 5 | % | Standard tolerance, IZT = 98.0 mA | 2 | |
| Maximum Zener Impedance | ZZT | 3.5 | Ω | @ IZT = 98.0 mA | 2 | ||
| Maximum Zener Knee Impedance | ZZK | 600 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | μA | @ VR = 1.0 V | 2 | ||
| Maximum DC Zener Current | IZM | 356 | mA | 2 | |||
| DC Power Dissipation | PD | 2 | W | TL = 75 °C | 1 | ||
| Maximum Forward Voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | Ts | -55 | 150 | °C | 1 | ||
| Nominal Zener Voltage | VZ | 5.1 | V | @ IZT = 98.0 mA | 2 | ||
| Zener Test Current | IZT | 98 | mA | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | (1) TL = Lead temperature at 5.0 mm2 ( 0.013 mm thick ) copper land areas. | 1 |
CAD (KiCad official)
- Symbol:
SZ455B - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
sz455b-etched.step/sz455b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz455b.step/sz455b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DOWO datasheet (3 pp, sha256
272e0fea2f7ffa2a, 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).
# SZ455B
**DOWO** · Zener Diodes · DO-214AC(SMA)
SZ455B from DOWO, in a DO-214AC(SMA). 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 color band on the SMA (DO-214AC) body; the SZ455B has a nominal Zener voltage of 5.1 V at IZT = 98.0 mA. |
| 2 | A | passive | Anode, the end opposite the color band; the device dissipates 2.0 W at TL = 75 °C and has a forward voltage of 1.2 V maximum at IF = 200 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | DO-214AC(SMA) |
| 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 | VZ | -5 | | 5 | % | Standard tolerance, IZT = 98.0 mA | 2 |
| Maximum Zener Impedance | ZZT | | | 3.5 | Ω | @ IZT = 98.0 mA | 2 |
| Maximum Zener Knee Impedance | ZZK | | | 600 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | μA | @ VR = 1.0 V | 2 |
| Maximum DC Zener Current | IZM | | | 356 | mA | | 2 |
| DC Power Dissipation | PD | | | 2 | W | TL = 75 °C | 1 |
| Maximum Forward Voltage | VF | | | 1.2 | V | IF = 200 mA | 1 |
| Junction Temperature Range | TJ | -55 | | 150 | °C | | 1 |
| Storage Temperature Range | Ts | -55 | | 150 | °C | | 1 |
| Nominal Zener Voltage | VZ | | 5.1 | | V | @ IZT = 98.0 mA | 2 |
| Zener Test Current | IZT | | 98 | | mA | | 2 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | | (1) TL = Lead temperature at 5.0 mm2 ( 0.013 mm thick ) copper land areas. | 1 |
## CAD (KiCad official)
- Symbol: `SZ455B`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `sz455b-etched.step` / `sz455b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sz455b.step` / `sz455b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [DOWO datasheet](docs/sz455b-datasheet.pdf) (3 pp, sha256 `272e0fea2f7ffa2a`, 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/sz455b-datasheet.pdf)