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SZMMBZ27VALT1G
Public Made by Adomby adom
onsemi Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZMMBZ27VALT1G
onsemi · Zener Diodes · SOT-23
SZMMBZ27VALT1G from onsemi, in a SOT-23. 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 of the first Zener junction; in the unidirectional configuration it is tied to pin 3 (anode), where the 27 V device has VRWM 22 V and breakdown VBR of 25.65 V min to 28.35 V max at IT 1.0 mA. |
| 2 | CATHODE | passive | Cathode of the second Zener junction; in the unidirectional configuration it is tied to pin 3 (anode), and the datasheet notes that circuit tied to pins 2 and 3 is an allowed unidirectional configuration. |
| 3 | ANODE | passive | Common anode shared by both internal junctions, so the device protects two separate lines in one package or acts as a single bidirectional Zener when pins 1 and 2 are both used. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
SZMMBZ27VALT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
szmmbz27valt1g-etched.step/szmmbz27valt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmmbz27valt1g.step/szmmbz27valt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (8 pp, sha256
483abf790b077772, retrieved 2026-10-09, 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).
# SZMMBZ27VALT1G
**onsemi** · Zener Diodes · SOT-23
SZMMBZ27VALT1G from onsemi, in a SOT-23. 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 of the first Zener junction; in the unidirectional configuration it is tied to pin 3 (anode), where the 27 V device has VRWM 22 V and breakdown VBR of 25.65 V min to 28.35 V max at IT 1.0 mA. |
| 2 | CATHODE | passive | Cathode of the second Zener junction; in the unidirectional configuration it is tied to pin 3 (anode), and the datasheet notes that circuit tied to pins 2 and 3 is an allowed unidirectional configuration. |
| 3 | ANODE | passive | Common anode shared by both internal junctions, so the device protects two separate lines in one package or acts as a single bidirectional Zener when pins 1 and 2 are both used. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `SZMMBZ27VALT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `szmmbz27valt1g-etched.step` / `szmmbz27valt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `szmmbz27valt1g.step` / `szmmbz27valt1g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838941407899648) (8 pp, sha256 `483abf790b077772`, retrieved 2026-10-09, 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/szmmbz27valt1g-datasheet.pdf)