# DX3108E

**Dersem** · LED Drivers · ESOP-8

DX3108E from Dersem, in a ESOP-8. 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 | NC | unconnected | No-connect pin, listed in the datasheet as a floating (悬空) port with no function. |
| 2 | NC | unconnected | No-connect pin, listed in the datasheet as a floating (悬空) port with no function. |
| 3 | CS1 | input | Output current setting port 1: the CS1 port voltage is rated -0.5 to 8 V, and the 576 to 624 mV (600 mV typical) reference sets the VIN-path current through RCS1. |
| 4 | CS2 | input | Output current setting port 2: the CS2 port voltage is rated -0.5 to 8 V, and the 576 to 624 mV (600 mV typical) reference sets the OUT-path current through RCS2. |
| 5 | OUT | bidirectional | Power input and constant-current output port 2: the OUT port voltage is rated -0.5 to 500 V, and the OUT output current is 5 to 60 mA. |
| 6 | CP | input | Constant-power setting port: it senses the OUT-side voltage through RCP for line-voltage compensation, with a port voltage rating of -0.5 to 8 V. |
| 7 | NC | unconnected | No-connect pin, listed in the datasheet as a floating (悬空) port with no function. |
| 8 | VIN | power_in | Power input and constant-current output port 1: the VIN port voltage is rated -0.5 to 500 V, and the VIN output current is 5 to 260 mA. |
| 9 | GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Dersem |
| Package | ESOP-8 |
| Category | LED Drivers |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `DX3108E`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `dx3108e-etched.step` / `dx3108e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dx3108e.step` / `dx3108e.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Dersem datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603378647160143872) (7 pp, sha256 `3b18d8b8b2200d1b`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/dx3108e-datasheet.pdf)