# 1SMB3EZ16_R1_00001

**PANJIT International** · Zener Diodes · DO-214AA(SMB)

1SMB3EZ16_R1_00001 from PANJIT International, in a DO-214AA(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 | Cathode | passive | Cathode terminal of the zener diode; the color band on the package denotes the cathode end, and the device is rated for 3 W steady-state power dissipation at TL = 75 °C (mounted on infinite heatsink). |
| 2 | Anode | passive | Anode terminal of the zener diode, with the device operating junction and storage temperature range stated as -55 °C to +150 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| Package | DO-214AA(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 (1SMB3EZ16) | VZ | 15.2 | 16 | 16.8 | V | IZT = 47 mA | 2 |
| Maximum Zener Impedance | ZZT |  |  | 6 | Ω | IZT = 47 mA | 2 |
| Maximum Zener Impedance (knee) | ZZK |  |  | 700 | Ω | IZK = 0.25 mA | 2 |
| Max Reverse Leakage Current | IR |  |  | 0.5 | μA | VR = 12.2 V | 2 |
| Steady State Power Dissipation | PD |  |  | 3 | W | TL = 75 °C (Note 1), mounted on infinite heatsink | 1 |
| Peak Forward Surge Current | IFSM |  |  | 15 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `1SMB3EZ16_R1_00001`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files: `1smb3ez16-r1-00001-etched.step` / `1smb3ez16-r1-00001-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1smb3ez16-r1-00001.step` / `1smb3ez16-r1-00001.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8551858835230257152) (6 pp, sha256 `b5647cb34b20f329`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/1smb3ez16-r1-00001-datasheet.pdf)