# 1SMA5927B

**Shandong Jingdao Microelectronics** · Zener Diodes · SMA

1SMA5927B from Shandong Jingdao Microelectronics, in a 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 | Cathode | passive | Cathode terminal of the Zener diode, identified in the PINNING table (top view) as pin 1 of the SMA package. The datasheet gives no pin-specific electrical limits beyond the device ratings (PD 1.5 W, TJ/TS -55 to +150 °C). |
| 2 | Anode | passive | Anode terminal of the Zener diode, identified in the PINNING table (top view) as pin 2 of the SMA package. The datasheet gives no pin-specific electrical limits beyond the device ratings (PD 1.5 W, TJ/TS -55 to +150 °C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | 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 |
|---|---|---|---|---|---|---|---|
| Power dissipation | PD |  |  | 1.5 | W | at TL=75°C | 1 |
| Zener voltage tolerance (suffix B = ±5%) |  | -5 |  | 5 | % | Suffix B indicates ±5% tolerance | 2 |
| Zener voltage | VZT | 11.4 | 12 | 12.6 | V | at IZT = 31.2 mA | 2 |
| Dynamic impedance | ZZT |  |  | 6.5 | Ω | at IZT | 2 |
| Reverse current | IR |  |  | 1 | μA |  | 2 |
| Forward voltage | VF |  |  | 1.5 | V | at IF = 200 mA | 1 |
| Junction temperature range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage temperature range | TS | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `1SMA5927B`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `1sma5927b-etched.step` / `1sma5927b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1sma5927b.step` / `1sma5927b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590463877801672704) (3 pp, sha256 `67ab90fde60ec855`, retrieved 2026-10-14, 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/1sma5927b-datasheet.pdf)