component
1N5242BTR
Public Made by Adomby adom
onsemi Zener Diodes, DO-35. 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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1N5242BTR
onsemi · Zener Diodes · DO-35
1N5242BTR from onsemi, in a DO-35. 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 | onsemi |
| Package | DO-35 |
| 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 (B suffix) | -5 | 5 | % | B suffix | 1 | ||
| Zener voltage VZ at IZT1 (nominal) | VZ | 12 | V | IZT1 = 20 mA | 2 | ||
| Test current IZT2 (max) | IZT2 | 0.25 | mA | 2 | |||
| Reverse leakage current IR (max) | IR | 1 | μA | VR = 9.1 V | 2 | ||
| Dynamic resistance ZZ at IZT1 (max) | ZZ | 30 | Ω | f = 1 kHz; IZT1 = 20 mA | 2 | ||
| Dynamic resistance ZZK at IZT2 (max) | ZZK | 600 | Ω | f = 1 kHz; IZT2 = 0.25 mA | 2 | ||
| Temperature coefficient of VZ (typ) | 0.077 | %/K | 2 | ||||
| Power dissipation (max) | Ptot | 500 | mW | TL 25 °C | 1 | ||
| Forward voltage (max) | VF | 1.1 | V | IF = 200 mA | 1 | ||
| Junction temperature (max) | Tj | 175 | °C | 1 | |||
| Storage temperature range | Tstg | -65 | 175 | °C | 1 | ||
| Thermal resistance junction to ambient air | RthJA | 300 | K/W | I = 4 mm, TL = constant | 1 |
CAD (KiCad official)
- Symbol:
1N5242BTR - Footprint:
Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal - 3D model: DO-35 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
69898c0555b08902, retrieved 2026-10-22, 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).
# 1N5242BTR
**onsemi** · Zener Diodes · DO-35
1N5242BTR from onsemi, in a DO-35. 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 | onsemi |
| Package | DO-35 |
| 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 (B suffix) | | -5 | | 5 | % | B suffix | 1 |
| Zener voltage VZ at IZT1 (nominal) | VZ | | 12 | | V | IZT1 = 20 mA | 2 |
| Test current IZT2 (max) | IZT2 | | | 0.25 | mA | | 2 |
| Reverse leakage current IR (max) | IR | | | 1 | μA | VR = 9.1 V | 2 |
| Dynamic resistance ZZ at IZT1 (max) | ZZ | | | 30 | Ω | f = 1 kHz; IZT1 = 20 mA | 2 |
| Dynamic resistance ZZK at IZT2 (max) | ZZK | | | 600 | Ω | f = 1 kHz; IZT2 = 0.25 mA | 2 |
| Temperature coefficient of VZ (typ) | | | 0.077 | | %/K | | 2 |
| Power dissipation (max) | Ptot | | | 500 | mW | TL 25 °C | 1 |
| Forward voltage (max) | VF | | | 1.1 | V | IF = 200 mA | 1 |
| Junction temperature (max) | Tj | | | 175 | °C | | 1 |
| Storage temperature range | Tstg | -65 | | 175 | °C | | 1 |
| Thermal resistance junction to ambient air | RthJA | | 300 | | K/W | I = 4 mm, TL = constant | 1 |
## CAD (KiCad official)
- Symbol: `1N5242BTR`
- Footprint: `Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal`
- 3D model: DO-35 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](docs/1n5242btr-datasheet.pdf) (6 pp, sha256 `69898c0555b08902`, retrieved 2026-10-22, 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/1n5242btr-datasheet.pdf)