component
B280
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GME(银河微电) Schottky Diodes, SMB. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention, KiCad symbol/footprint/3D.
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B280
GME(银河微电) · Schottky Diodes · SMB
B280 from GME(银河微电), 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 | GME(银河微电) |
| 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 |
|---|---|---|---|---|---|---|---|
| Instantaneous Forward Voltage | VF | 0.8 | V | IF = 2.0A @ TA = 25°C; pulse test 300us, 1% duty cycle | 2 | ||
| Maximum Reverse Current @ TJ = 25°C | IR | 30 | μA | Rated VR, @ TJ = 25°C; pulse width 40ms | 2 | ||
| Maximum Reverse Current @ TJ = 100°C | IR | 5 | mA | Rated VR, @ TJ = 100°C; pulse width 40ms | 2 | ||
| Peak Repetitive Reverse Voltage | VRRM | 80 | V | @ TA = 25°C | 1 | ||
| RMS Reverse Voltage | VRMS | 56 | V | @ TA = 25°C | 1 | ||
| DC Blocking Voltage | VDC | 80 | V | @ TA = 25°C | 1 | ||
| Maximum Average Forward Output Current | IF_AV | 2 | A | @ TA = 25°C | 1 | ||
| Peak Forward Surge Current | IFSM | 50 | A | 8.3ms Single Half Sine wave; @ TA = 25°C | 1 | ||
| Typical Thermal Resistance, junction to ambient | RΘJA | 60 | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Typical Thermal Resistance, junction to case | RΘJC | 23 | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Typical Thermal Resistance, junction to lead | RΘJL | 25 | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 | ||
| Operating Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 1 |
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 | tin | Terminals: Matte tin plated leads; solderable per J-STD-002 and JESD22-B102 Polarity: Color band denotes cathode end | 1 |
CAD (KiCad official)
- Symbol:
B280 - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
b280-etched.step/b280-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);b280.step/b280.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GME(银河微电) datasheet (4 pp, sha256
38304296147a2b29, retrieved 2026-11-08, 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).
# B280
**GME(银河微电)** · Schottky Diodes · SMB
B280 from GME(银河微电), 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 | GME(银河微电) |
| 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 |
|---|---|---|---|---|---|---|---|
| Instantaneous Forward Voltage | VF | | | 0.8 | V | IF = 2.0A @ TA = 25°C; pulse test 300us, 1% duty cycle | 2 |
| Maximum Reverse Current @ TJ = 25°C | IR | | | 30 | μA | Rated VR, @ TJ = 25°C; pulse width 40ms | 2 |
| Maximum Reverse Current @ TJ = 100°C | IR | | | 5 | mA | Rated VR, @ TJ = 100°C; pulse width 40ms | 2 |
| Peak Repetitive Reverse Voltage | VRRM | | | 80 | V | @ TA = 25°C | 1 |
| RMS Reverse Voltage | VRMS | | | 56 | V | @ TA = 25°C | 1 |
| DC Blocking Voltage | VDC | | | 80 | V | @ TA = 25°C | 1 |
| Maximum Average Forward Output Current | IF_AV | | | 2 | A | @ TA = 25°C | 1 |
| Peak Forward Surge Current | IFSM | | | 50 | A | 8.3ms Single Half Sine wave; @ TA = 25°C | 1 |
| Typical Thermal Resistance, junction to ambient | RΘJA | | 60 | | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 |
| Typical Thermal Resistance, junction to case | RΘJC | | 23 | | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 |
| Typical Thermal Resistance, junction to lead | RΘJL | | 25 | | °C/W | Device mounted on p.c.b. with 10 mm x 20 mm x 0.1 mm copper pad area | 1 |
| Operating Junction Temperature Range | TJ | -55 | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -55 | | 150 | °C | | 1 |
## 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 | | tin | Terminals: Matte tin plated leads; solderable per J-STD-002 and JESD22-B102 Polarity: Color band denotes cathode end | 1 |
## CAD (KiCad official)
- Symbol: `B280`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `b280-etched.step` / `b280-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `b280.step` / `b280.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [GME(银河微电) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590921417888382976) (4 pp, sha256 `38304296147a2b29`, retrieved 2026-11-08, 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/b280-datasheet.pdf)