component
3SMBJ5945B-TP
Public Made by Adomby adom
MCC(Micro Commercial Components) Zener Diodes, SMB(DO-214AA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
3SMBJ5945B-TP
MCC(Micro Commercial Components) · Zener Diodes · SMB(DO-214AA)
3SMBJ5945B-TP from MCC(Micro Commercial Components), in a SMB(DO-214AA). 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 | MCC(Micro Commercial Components) |
| Package | SMB(DO-214AA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance | VZ | -5 | 5 | % | Type numbers with B suffix indicate +/-5% tolerance (Note 4) | 2 | |
| Maximum Dynamic Impedance | ZZT | 120 | Ω | @ IZT = 5.5 mA | 2 | ||
| Maximum Reverse Current | IR | 1 | µA | Reverse voltage VR = 51.7 V | 2 | ||
| Maximum Forward Voltage | VF | 1.5 | V | IF = 200 mA | 1 | ||
| Steady State Power Dissipation | PD | 3 | W | Note 3: mounted on 5.0 mm2 (1oz thick) land areas; lead temperature TL=75 °C | 1 | ||
| Operating Junction Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 1 | ||
| Zener Voltage | VZ | 68 | V | @ IZT = 5.5 mA | 2 | ||
| Knee Impedance | ZZk | 1700 | Ω | @ IZK = 0.25 mA | 2 | ||
| Knee Current | IZK | 0.25 | mA | 2 | |||
| Reverse Voltage | VR | 51.7 | V | Column VR as printed for IR | 2 | ||
| Thermal Resistance Junction to Ambient | RθJA | 226 | °C/W | Junction to ambient | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 20 | °C/W | Junction to lead | 1 | ||
| Thermal Resistance Junction to Case | RθJC | 22 | °C/W | Junction to case | 1 |
CAD (KiCad official)
- Symbol:
3SMBJ5945B-TP - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
3smbj5945b-tp-etched.step/3smbj5945b-tp-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3smbj5945b-tp.step/3smbj5945b-tp.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MCC(Micro Commercial Components) datasheet (4 pp, sha256
3bccce2727b9eb2f, retrieved 2026-10-30, 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).
# 3SMBJ5945B-TP
**MCC(Micro Commercial Components)** · Zener Diodes · SMB(DO-214AA)
3SMBJ5945B-TP from MCC(Micro Commercial Components), in a SMB(DO-214AA). 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 | MCC(Micro Commercial Components) |
| Package | SMB(DO-214AA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance | VZ | -5 | | 5 | % | Type numbers with B suffix indicate +/-5% tolerance (Note 4) | 2 |
| Maximum Dynamic Impedance | ZZT | | | 120 | Ω | @ IZT = 5.5 mA | 2 |
| Maximum Reverse Current | IR | | | 1 | µA | Reverse voltage VR = 51.7 V | 2 |
| Maximum Forward Voltage | VF | | | 1.5 | V | IF = 200 mA | 1 |
| Steady State Power Dissipation | PD | | | 3 | W | Note 3: mounted on 5.0 mm2 (1oz thick) land areas; lead temperature TL=75 °C | 1 |
| Operating Junction Temperature Range | TJ | -65 | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -65 | | 150 | °C | | 1 |
| Zener Voltage | VZ | | 68 | | V | @ IZT = 5.5 mA | 2 |
| Knee Impedance | ZZk | | 1700 | | Ω | @ IZK = 0.25 mA | 2 |
| Knee Current | IZK | | 0.25 | | mA | | 2 |
| Reverse Voltage | VR | | 51.7 | | V | Column VR as printed for IR | 2 |
| Thermal Resistance Junction to Ambient | RθJA | | 226 | | °C/W | Junction to ambient | 1 |
| Thermal Resistance Junction to Lead | RθJL | | 20 | | °C/W | Junction to lead | 1 |
| Thermal Resistance Junction to Case | RθJC | | 22 | | °C/W | Junction to case | 1 |
## CAD (KiCad official)
- Symbol: `3SMBJ5945B-TP`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `3smbj5945b-tp-etched.step` / `3smbj5945b-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3smbj5945b-tp.step` / `3smbj5945b-tp.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MCC(Micro Commercial Components) datasheet](docs/3smbj5945b-tp-datasheet.pdf) (4 pp, sha256 `3bccce2727b9eb2f`, retrieved 2026-10-30, 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/3smbj5945b-tp-datasheet.pdf)