component
MMSZ5237B-TP
Public Made by Adomby adom
MCC Micro Commercial Components Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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MMSZ5237B-TP
MCC Micro Commercial Components · Zener Diodes · SOD-123
MMSZ5237B-TP from MCC Micro Commercial Components, in a SOD-123. 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 | SOD-123 |
| 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 forward voltage | VF | 0.9 | V | IF = 10 mA | 1 | ||
| Power dissipation | PD | 500 | mW | Note 3: mounted on 5.0 mm² (0.013 mm thick) land areas | 1 | ||
| Operating junction temperature range | TJ | -65 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -65 | 150 | °C | 1 | ||
| Thermal resistance junction to ambient | RθJA | 340 | °C/W | Note 2: on FR-4 board with minimum recommended solder pad layout | 1 | ||
| Nominal Zener voltage | VZ | 8.2 | V | IZT = 20 mA; measured at 90 s with lead temperature TL = 25°C | 2 | ||
| Zener voltage tolerance (B suffix) | VZ | -5 | 5 | % | Standard tolerance for B suffix (Note 4) | 2 | |
| Maximum Zener impedance | ZZT | 8 | Ω | at IZT = 20 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 500 | Ω | at IZK = 0.25 mA | 2 | ||
| Maximum reverse leakage current | IR | 3 | µA | at VR = 6.5 V | 2 | ||
| Maximum Zener voltage temperature coefficient | 0.062 | %/°C | Maximum temperature coefficient as printed (+0.062 %/°C) | 2 |
CAD (KiCad official)
- Symbol:
MMSZ5237B-TP - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5237b-tp-etched.step/mmsz5237b-tp-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5237b-tp.step/mmsz5237b-tp.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MCC Micro Commercial Components datasheet (5 pp, sha256
38cdd4ebfc688c2f, retrieved 2026-10-18, 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).
# MMSZ5237B-TP
**MCC Micro Commercial Components** · Zener Diodes · SOD-123
MMSZ5237B-TP from MCC Micro Commercial Components, in a SOD-123. 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 | SOD-123 |
| 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 forward voltage | VF | | | 0.9 | V | IF = 10 mA | 1 |
| Power dissipation | PD | | | 500 | mW | Note 3: mounted on 5.0 mm² (0.013 mm thick) land areas | 1 |
| Operating junction temperature range | TJ | -65 | | 150 | °C | | 1 |
| Storage temperature range | TSTG | -65 | | 150 | °C | | 1 |
| Thermal resistance junction to ambient | RθJA | | 340 | | °C/W | Note 2: on FR-4 board with minimum recommended solder pad layout | 1 |
| Nominal Zener voltage | VZ | | 8.2 | | V | IZT = 20 mA; measured at 90 s with lead temperature TL = 25°C | 2 |
| Zener voltage tolerance (B suffix) | VZ | -5 | | 5 | % | Standard tolerance for B suffix (Note 4) | 2 |
| Maximum Zener impedance | ZZT | | | 8 | Ω | at IZT = 20 mA | 2 |
| Maximum Zener impedance (knee) | ZZK | | | 500 | Ω | at IZK = 0.25 mA | 2 |
| Maximum reverse leakage current | IR | | | 3 | µA | at VR = 6.5 V | 2 |
| Maximum Zener voltage temperature coefficient | | | | 0.062 | %/°C | Maximum temperature coefficient as printed (+0.062 %/°C) | 2 |
## CAD (KiCad official)
- Symbol: `MMSZ5237B-TP`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz5237b-tp-etched.step` / `mmsz5237b-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz5237b-tp.step` / `mmsz5237b-tp.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MCC Micro Commercial Components datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8601124665410392064) (5 pp, sha256 `38cdd4ebfc688c2f`, retrieved 2026-10-18, 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/mmsz5237b-tp-datasheet.pdf)