# ACASA1001U1001P1AT

**Vishay Intertech** · Resistor Networks, Arrays · 0603x4

ACASA1001U1001P1AT from Vishay Intertech, 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 | Pin 1 | passive | Terminal 1 of the isolated 0603 resistor array (top-left position on the pin drawing); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 2 | Pin 2 | passive | Terminal 2 of the isolated 0603 resistor array (top row, second position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 3 | Pin 3 | passive | Terminal 3 of the isolated 0603 resistor array (top row, third position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 4 | Pin 4 | passive | Terminal 4 of the isolated 0603 resistor array (top-right position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 5 | Pin 5 | passive | Terminal 5 of the isolated 0603 resistor array (bottom-right position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 6 | Pin 6 | passive | Terminal 6 of the isolated 0603 resistor array (bottom row, third position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 7 | Pin 7 | passive | Terminal 7 of the isolated 0603 resistor array (bottom row, second position); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |
| 8 | Pin 8 | passive | Terminal 8 of the isolated 0603 resistor array (bottom-left position, opposite pin 1); each element is rated 125 mW at P70 with 100 V maximum operating voltage and 100 V insulation between integrated resistors. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 |  |  | 1 |  | kΩ | nominal, catalog attribute (LCSC C1731577) | catalog |
| Tolerance |  | -0.1 |  | 0.1 | % | catalog attribute (LCSC C1731577) | catalog |
| Rated power |  |  |  | 125 | mW | catalog attribute (LCSC C1731577) | catalog |
| Temperature coefficient | TCR | -10 |  | 10 | ppm/°C | catalog description (LCSC C1731577) | catalog |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | matte tin plating provides compatibility with lead (Pb)-free and lead-containing soldering processes. The permitted | 4 |

## CAD (KiCad official)

- Symbol: `ACASA1001U1001P1AT`
- Footprint: `Resistor_SMD:R_Array_Convex_4x0603`
- 3D model: 0603x4 (KiCad packages3D, STEP)
- 3D model files: `acasa1001u1001p1at-etched.step` / `acasa1001u1001p1at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `acasa1001u1001p1at.step` / `acasa1001u1001p1at.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589784924044890112) (9 pp, sha256 `b98d819bbf63b440`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/acasa1001u1001p1at-datasheet.pdf)