component
1SMA4739_R1_00001
Public Made by Adomby adom
PANJIT International Zener Diodes, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdown1SMA4739_R1_00001
PANJIT International · Zener Diodes · SMA(DO-214AC)
1SMA4739_R1_00001 from PANJIT International, in a SMA(DO-214AC). 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, marked by the color band on the package; the zener diode is reverse-biased (cathode positive) for regulation (1SMA4739 nominal Vz 9.1 V at 28 mA). |
| 2 | A | passive | Anode terminal of the zener diode (pin 2 shown as Anode in the package drawing). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| Package | SMA(DO-214AC) |
| 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 | Vz | 8.65 | 9.1 | 9.56 | V | @ IZT = 28 mA | 2 |
| Zener Test Current | IZT | 28 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 5 | Ω | @ IZT = 28 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 700 | Ω | @ IZK = 0.5 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 0.5 | uA | @ VR = 7 V | 2 | ||
| Standard Zener Voltage Tolerance | -5 | 5 | % | on nominal zener voltage | 1 | ||
| Steady State Power Dissipation | PD | 1 | W | POWER 1 Watt header; Note A mounting | 1 |
CAD (KiCad official)
- Symbol:
1SMA4739_R1_00001 - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
1sma4739-r1-00001-etched.step/1sma4739-r1-00001-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma4739-r1-00001.step/1sma4739-r1-00001.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (8 pp, sha256
7862cf6cc0ea7514, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).