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MMSZ5252B_R1_00301
Public Made by Adomby adom
PANJIT International Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MMSZ5252B_R1_00301
PANJIT International · Zener Diodes · SOD-123
MMSZ5252B_R1_00301 from PANJIT International, 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 | Cathode | passive | Cathode terminal of the zener diode; the datasheet pinout places Cathode at pin 1, and total power dissipation is limited to 500 mW. |
| 2 | Anode | passive | Anode terminal of the zener diode; the datasheet pinout places Anode at pin 2, and operating junction and storage temperature is limited to -55 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage (Min/Max limits, Nom. 24 V) | V Nom. | 22.8 | 24 | 25.2 | V | MMSZ5252B row; Z @ IZT 5.2 mA | 2 |
| Max Zener Impedance Z ZT | Z ZT | 33 | Ω | @ IZT 5.2 mA | 2 | ||
| Max Zener Impedance Z ZK | Z ZK | 600 | Ω | @ IZK 0.25 mA | 2 | ||
| Max Reverse Leakage Current | I R | 0.1 | μA | @ V R 18 V | 2 | ||
| Total Power Dissipation | PD | 500 | mW | Notes A | 1 | ||
| Operating Junction and Storage Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Typical Thermal Resistance, junction to ambient (value mapped to Notes B, FR4 mini pad) | RθJA | 430 | °C/W | Notes B: FR4 PCB, single-sided copper, mini pad | 1 | ||
| Typical Thermal Resistance, junction to ambient (value mapped to Notes A, 100 cm² copper) | RθJA | 325 | °C/W | Notes A: mounted on 100 cm² (1 mm thick) copper areas | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5252B_R1_00301 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5252b-r1-00301-etched.step/mmsz5252b-r1-00301-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5252b-r1-00301.step/mmsz5252b-r1-00301.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (6 pp, sha256
9961cd1c3a1662b0, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# MMSZ5252B_R1_00301
**PANJIT International** · Zener Diodes · SOD-123
MMSZ5252B_R1_00301 from PANJIT International, 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 | Cathode | passive | Cathode terminal of the zener diode; the datasheet pinout places Cathode at pin 1, and total power dissipation is limited to 500 mW. |
| 2 | Anode | passive | Anode terminal of the zener diode; the datasheet pinout places Anode at pin 2, and operating junction and storage temperature is limited to -55 to +150 °C. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage (Min/Max limits, Nom. 24 V) | V Nom. | 22.8 | 24 | 25.2 | V | MMSZ5252B row; Z @ IZT 5.2 mA | 2 |
| Max Zener Impedance Z ZT | Z ZT | | | 33 | Ω | @ IZT 5.2 mA | 2 |
| Max Zener Impedance Z ZK | Z ZK | | | 600 | Ω | @ IZK 0.25 mA | 2 |
| Max Reverse Leakage Current | I R | | | 0.1 | μA | @ V R 18 V | 2 |
| Total Power Dissipation | PD | | | 500 | mW | Notes A | 1 |
| Operating Junction and Storage Temperature Range | TJ | -55 | | 150 | °C | | 1 |
| Typical Thermal Resistance, junction to ambient (value mapped to Notes B, FR4 mini pad) | RθJA | | 430 | | °C/W | Notes B: FR4 PCB, single-sided copper, mini pad | 1 |
| Typical Thermal Resistance, junction to ambient (value mapped to Notes A, 100 cm² copper) | RθJA | | 325 | | °C/W | Notes A: mounted on 100 cm² (1 mm thick) copper areas | 1 |
## CAD (KiCad official)
- Symbol: `MMSZ5252B_R1_00301`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz5252b-r1-00301-etched.step` / `mmsz5252b-r1-00301-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz5252b-r1-00301.step` / `mmsz5252b-r1-00301.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590931344019447808) (6 pp, sha256 `9961cd1c3a1662b0`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/mmsz5252b-r1-00301-datasheet.pdf)