# SS310B50

**JUXING** · Schottky Diodes · SMB

SS310B50 from JUXING, 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 end marked by the laser band on the DO-214AA molded plastic body. |
| 2 | A | passive | Anode terminal, the end opposite the laser band; the SS310 is rated 100 V DC blocking, 3.0 A average rectified current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Recurrent Peak Reverse Voltage | VRRM |  |  | 100 | V |  | 1 |
| Maximum RMS Voltage | VRMS |  |  | 70 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 100 | V |  | 1 |
| Average Rectified Output Current | IO |  |  | 3 | A |  | 1 |
| Peak Forward Surge Current | IFSM |  |  | 80 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 |
| Forward Voltage | VFM |  |  | 0.85 | V | IF=3.0A | 1 |
| Typical Thermal Resistance | RθJA |  | 70 |  | ℃/W | Junction to lead mounted on P.C.B. with 8.0mm x 8.0mm copper pad areas | 1 |
| Operating Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Rating for fusing | I2t |  | 26.56 |  | A2s | t<8.3ms | 1 |

## CAD (KiCad official)

- Symbol: `SS310B50`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `ss310b50-etched.step` / `ss310b50-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss310b50.step` / `ss310b50.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JUXING datasheet](docs/ss310b50-datasheet.pdf) (2 pp, sha256 `da1c7e65d22951d3`, 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/ss310b50-datasheet.pdf)