component
P4SMA6.8A
Public Made by Adomby adom
UMW TVS, SMA(DO-214AC). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownP4SMA6.8A
UMW · TVS · SMA(DO-214AC)
P4SMA6.8A from UMW, 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SMA(DO-214AC) |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation | PPPM | 400 | Watts | TA=25°C, TP=1ms (Note 1) | 2 | ||
| ESD Voltage per IEC61000-4-2, Contact | VESD1 | -30 | 30 | kV | Contact, per IEC61000-4-2 | 2 | |
| ESD Voltage per IEC61000-4-2, Air | VESD2 | -30 | 30 | kV | Air, per IEC61000-4-2 | 2 | |
| Junction and Storage Temperature Range | TJ,TSTG | -55 | 150 | °C | 2 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | Volts | at 25.0A, unidirectional only | 2 | ||
| Steady State Power Dissipation | PD | 3.3 | Watts | TL=75°C, lead lengths .375" 9.5mm (Note 2) | 2 | ||
| Peak Forward Surge Current | IFSM | 40 | Amps | 8.3ms single half sine-wave, superimposed on rated load, JEDEC method (Note 3) | 2 | ||
| Reverse Stand-Off Voltage | VRWM | 5.8 | V | 3 | |||
| Breakdown Voltage, MIN | VBR | 6.45 | V | IT=10 mA (test current) | 3 | ||
| Breakdown Voltage, MAX | VBR | 7.14 | V | IT=10 mA (test current) | 3 | ||
| Reverse Leakage Current | IR | 1000 | μA | @VRWM | 3 | ||
| Maximum Clamping Voltage | VC | 10.5 | V | @IPP=39A | 3 | ||
| Peak Pulse Current | IPP | 39 | A | 3 |
CAD (KiCad official)
- Symbol:
P4SMA6.8A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
p4sma6-8a-etched.step/p4sma6-8a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);p4sma6-8a.step/p4sma6-8a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (8 pp, sha256
5bdfc79f254a4e23, retrieved 2026-10-21, 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).