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1SMA4738_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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown1SMA4738_R1_00001
PANJIT International · Zener Diodes · SMA(DO-214AC)
1SMA4738_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, the end marked by the color band; zener voltage for 1SMA4738 is 8.2 V nominal (7.79 V to 8.61 V) at IZT = 31 mA. |
| 2 | A | passive | Anode terminal of the zener diode; the 1SMA4738 is rated for 1 W power dissipation. |
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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage | VZ | 7.79 | 8.2 | 8.61 | V | @ IZT = 31 mA | 2 |
| Zener Voltage Tolerance | -5 | 5 | % | standard tolerance on nominal zener voltage (Note C) | 1 | ||
| Maximum Zener Impedance | ZZT | 4.5 | Ω | @ IZT = 31 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 700 | Ω | @ IZK = 0.5 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | uA | @ VR = 6 V | 2 | ||
| Peak Power Dissipation | PD | 1 | W | TA = 50°C (Note A) | 1 | ||
| Peak Forward Surge Current | IFSM | 10 | A | 8.3ms single half sine-wave superimposed on rated load | 1 |
CAD (KiCad official)
- Symbol:
1SMA4738_R1_00001 - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
1sma4738-r1-00001-etched.step/1sma4738-r1-00001-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma4738-r1-00001.step/1sma4738-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
89c9fddfd1cadaf4, 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).