component
1.5SMBJ18A
Public Made by Adomby adom
PAKER TVS, SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
1.5SMBJ18A
PAKER · TVS · SMB
1.5SMBJ18A from PAKER, 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PAKER |
| Package | SMB |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 20 | 22.1 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage | VC | 29.2 | V | @ IPP = 51.4 A | 2 | ||
| Maximum Peak Pulse Current | IPP | 51.4 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | μA | @ VR = 18 V | 2 | ||
| VBR Voltage Tolerance (A suffix) | VBR | -5 | 5 | % | A suffix: 5% VBR tolerance | 1 | |
| Reverse Stand-off Voltage | VR | 18 | V | 2 | |||
| Test Current | IT | 1 | mA | 2 | |||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000us waveform, non-repetitive | 1 | ||
| Steady State Power Dissipation | PD | 5 | W | Infinite heatsink at TA=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 150 | A | 8.3ms single half sine wave, duty cycle=4 per minute max | 1 | ||
| Maximum Instantaneous Forward Voltage | VFM | 5 | V | at 50A, unidirectional only | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 20 | ℃/W | Typical | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 100 | ℃/W | Typical | 1 | ||
| Operating Temperature Range | TJ | -55 | 150 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 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 | copper | Notes2: Mounted on copper pad area of 5×5mm to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
1.5SMBJ18A - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
1-5smbj18a-etched.step/1-5smbj18a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smbj18a.step/1-5smbj18a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PAKER datasheet (3 pp, sha256
31f02487adc49129, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).
# 1.5SMBJ18A
**PAKER** · TVS · SMB
1.5SMBJ18A from PAKER, 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PAKER |
| Package | SMB |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 20 | | 22.1 | V | @ IT = 1 mA | 2 |
| Maximum Clamping Voltage | VC | | | 29.2 | V | @ IPP = 51.4 A | 2 |
| Maximum Peak Pulse Current | IPP | | | 51.4 | A | | 2 |
| Maximum Reverse Leakage | IR | | | 1 | μA | @ VR = 18 V | 2 |
| VBR Voltage Tolerance (A suffix) | VBR | -5 | | 5 | % | A suffix: 5% VBR tolerance | 1 |
| Reverse Stand-off Voltage | VR | | 18 | | V | | 2 |
| Test Current | IT | | 1 | | mA | | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 1500 | W | 10/1000us waveform, non-repetitive | 1 |
| Steady State Power Dissipation | PD | | | 5 | W | Infinite heatsink at TA=50°C | 1 |
| Peak Forward Surge Current | IFSM | | | 150 | A | 8.3ms single half sine wave, duty cycle=4 per minute max | 1 |
| Maximum Instantaneous Forward Voltage | VFM | | | 5 | V | at 50A, unidirectional only | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 20 | | ℃/W | Typical | 1 |
| Thermal Resistance Junction to Ambient | RθJA | | 100 | | ℃/W | Typical | 1 |
| Operating Temperature Range | TJ | -55 | | 150 | ℃ | | 1 |
| Storage Temperature Range | TSTG | -55 | | 150 | ℃ | | 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 | copper | | Notes2: Mounted on copper pad area of 5×5mm to each terminal. | 1 |
## CAD (KiCad official)
- Symbol: `1.5SMBJ18A`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `1-5smbj18a-etched.step` / `1-5smbj18a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1-5smbj18a.step` / `1-5smbj18a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [PAKER datasheet](docs/1-5smbj18a-datasheet.pdf) (3 pp, sha256 `31f02487adc49129`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/1-5smbj18a-datasheet.pdf)