component
STEF12EPUR
Public Made by Adomby adom
STMicroelectronics Surge Protection Devices (SPDs), UDFN-10-EP(3x3). 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
markdownSTEF12EPUR
STMicroelectronics · Surge Protection Devices (SPDs) · UDFN-10-EP(3x3)
STEF12EPUR from STMicroelectronics, in a UDFN-10-EP(3x3). 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 | GND | power_in | Ground pin of the e-fuse. |
| 2 | dv/dt | passive | Sets the output voltage slew rate at turn-on, with an internal capacitor giving a ramp of about 1 ms; an external capacitor may be added to lengthen the ramp, and the absolute maximum rating is -0.3 to 7 V. |
| 3 | En/Fault | bidirectional | Tri-state bidirectional Enable/Fault pin that must be left floating in normal operation or pulled to ground by an open-drain/open-collector device to disable the output, goes to an intermediate level on thermal shutdown, and has an absolute maximum rating of -0.3 to 7 V. |
| 4 | I-Limit | passive | A resistor between this pin and the Source pin sets the overload and short-circuit current limit and the pin must not be left unconnected; absolute maximum rating is -0.3 to 25 V (max 100 ms). |
| 5 | NC | unconnected | Not connected. |
| 6 | VOUT/Source | power_out | Connected to the source of the internal power MOSFET and to the output terminal of the fuse. |
| 7 | VOUT/Source | power_out | Connected to the source of the internal power MOSFET and to the output terminal of the fuse. |
| 8 | VOUT/Source | power_out | Connected to the source of the internal power MOSFET and to the output terminal of the fuse. |
| 9 | VOUT/Source | power_out | Connected to the source of the internal power MOSFET and to the output terminal of the fuse. |
| 10 | VOUT/Source | power_out | Connected to the source of the internal power MOSFET and to the output terminal of the fuse. |
| 11 | VCC | power_in | Exposed pad that must be connected to the positive input voltage; steady-state absolute maximum is -0.3 to 18 V (-0.3 to 25 V for max 100 ms). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | UDFN-10-EP(3x3) |
| Category | Circuit Protection |
| Pins | 11 |
CAD (KiCad official)
- Symbol:
STEF12EPUR - Footprint:
Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm - 3D model: UDFN-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
stef12epur-etched.step/stef12epur-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stef12epur.step/stef12epur.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (21 pp, sha256
d470c97660f4b352, retrieved 2026-10-10, 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).