# 4D03WGF3921T5E

**UNI ROYAL Uniroyal Elec** · Resistor Networks, Arrays · 0603x4

4D03WGF3921T5E from UNI ROYAL Uniroyal Elec, in a 0603x4. 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 | R1_A | passive | Bottom-row terminal of resistor R1, paired with pin 8; all four resistors are equal (R1=R2=R3=R4). |
| 2 | R2_A | passive | Bottom-row terminal of resistor R2, paired with pin 7; R1=R2=R3=R4. |
| 3 | R3_A | passive | Bottom-row terminal of resistor R3, paired with pin 6; R1=R2=R3=R4. |
| 4 | R4_A | passive | Bottom-row terminal of resistor R4, paired with pin 5; R1=R2=R3=R4. |
| 5 | R4_B | passive | Top-row terminal of resistor R4, paired with pin 4; R1=R2=R3=R4. |
| 6 | R3_B | passive | Top-row terminal of resistor R3, paired with pin 3; R1=R2=R3=R4. |
| 7 | R2_B | passive | Top-row terminal of resistor R2, paired with pin 2; R1=R2=R3=R4. |
| 8 | R1_B | passive | Top-row terminal of resistor R1, paired with pin 1; R1=R2=R3=R4. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UNI ROYAL Uniroyal Elec |
| Package | 0603x4 |
| Category | Resistors |
| Pins | 8 |

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 3.92 |  | kΩ | nominal, catalog attribute (LCSC C425208) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C425208) | catalog |
| Rated power |  |  |  | 62.5 | mW | catalog attribute (LCSC C425208) | catalog |
| Temperature coefficient | TCR | -200 |  | 200 | ppm/°C | catalog description (LCSC C425208) | catalog |

## CAD (KiCad official)

- Symbol: `4D03WGF3921T5E`
- Footprint: `Resistor_SMD:R_Array_Convex_4x0603`
- 3D model: 0603x4 (KiCad packages3D, STEP)
- 3D model files: `4d03wgf3921t5e-etched.step` / `4d03wgf3921t5e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `4d03wgf3921t5e.step` / `4d03wgf3921t5e.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UNI ROYAL Uniroyal Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933450178551808) (14 pp, sha256 `6fc9dd06b3e4137a`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/4d03wgf3921t5e-datasheet.pdf)