# CAY10-000J4LF

**BOURNS** · Resistor Networks, Arrays · 0402x4

CAY10-000J4LF from BOURNS, in a 0402x4. 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 | Terminal 1 of isolated resistor R1, which is paired with terminal 8 in the CAY10-xxxJ4 isolated circuit. |
| 2 | R2_A | passive | Terminal 2 of isolated resistor R2, which is paired with terminal 7 in the CAY10-xxxJ4 isolated circuit. |
| 3 | R3_A | passive | Terminal 3 of isolated resistor R3, which is paired with terminal 6 in the CAY10-xxxJ4 isolated circuit. |
| 4 | R4_A | passive | Terminal 4 of isolated resistor R4, which is paired with terminal 5 in the CAY10-xxxJ4 isolated circuit. |
| 5 | R4_B | passive | Terminal 5 of isolated resistor R4, which is paired with terminal 4; resistor rated 0.0625 W at 70 °C. |
| 6 | R3_B | passive | Terminal 6 of isolated resistor R3, which is paired with terminal 3; resistor rated 0.0625 W at 70 °C. |
| 7 | R2_B | passive | Terminal 7 of isolated resistor R2, which is paired with terminal 2; resistor rated 0.0625 W at 70 °C. |
| 8 | R1_B | passive | Terminal 8 of isolated resistor R1, which is paired with terminal 1; resistor rated 0.0625 W at 70 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 0402x4 |
| Category | Resistors |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (J code, ±5 %) |  | -5 |  | 5 | % | J = ±5 % (E24); family-level tolerance, see review notes for zero-ohm jumper | 1 |
| Max. working voltage |  |  |  | 25 | V | J4 column | 1 |
| Max. overload voltage |  |  |  | 50 | V | J4 column | 1 |
| Power rating per resistor |  |  |  | 0.0625 | W | @ 70 °C per resistor | 1 |
| Package power rating |  |  |  | 0.25 | W | @ 70 °C, J4 package (4 resistors) | 1 |
| Operating temperature range |  | -55 |  | 125 | °C |  | 1 |
| Short time overload, resistance change |  | -2 |  | 2 | % | Rated voltage X 2.5, 5 seconds | 1 |
| Soldering heat, resistance change |  | -1 |  | 1 | % | 260 °C ±5 °C, 10 seconds ±1 second | 1 |
| Temperature cycling, resistance change |  | -1 |  | 1 | % | 125 °C (30 minutes) - normal (15 minutes); -30 °C (30 minutes) - normal (15 minutes) | 1 |
| Moisture load life, resistance change |  | -3 |  | 3 | % | 1000 hours | 1 |
| Load life, resistance change |  | -3 |  | 3 | % | 1000 hours | 1 |

## CAD (KiCad official)

- Symbol: `CAY10-000J4LF`
- Footprint: `Resistor_SMD:R_Array_Convex_4x0402`
- 3D model: 0402x4 (KiCad packages3D, STEP)
- 3D model files: `cay10-000j4lf-etched.step` / `cay10-000j4lf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cay10-000j4lf.step` / `cay10-000j4lf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589824282705895424) (4 pp, sha256 `c31825ad7cea6d42`, 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/cay10-000j4lf-datasheet.pdf)