# PS2561D-1Y-V-A

**RENESAS** · Transistor, Photovoltaic Output Optoisolators · DIP-4

PS2561D-1Y-V-A from RENESAS, in a DIP-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Anode | input | Anode of the input GaAs infrared LED. Forward current IF is driven into this pin (typ. 5 mA, absolute max IF = 40 mA DC, IFP = 1 A peak). Forward voltage VF = 1.2 V typ. (1.4 V max) at IF = 10 mA; VR max = 6 V. |
| 2 | Cathode | input | Cathode of the input GaAs infrared LED. Return terminal for the LED forward current; combined with pin 1 forms the input side of the photocoupler. |
| 3 | Emitter | output | Emitter of the output NPN silicon phototransistor. VECO max = 7 V. Typically tied to the output-side ground/return in the isolated circuit. |
| 4 | Collector | output | Collector of the output NPN silicon phototransistor. VCEO max = 80 V, IC max = 50 mA, VCE(sat) = 0.3 V max at IF = 10 mA / IC = 2 mA. CTR = IC/IF = 50-400% (typ. 160%) at IF = 5 mA, VCE = 5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `PS2561D-1Y-A`
- `PS2561D-1Y-V-A`
- `PS2561DL-1Y-A`
- `PS2561DL-1Y-V-A`
- `PS2561DL-1Y-F3-A`
- `PS2561DL-1Y-V-F3-A`
- `PS2561DL1-1Y-A`
- `PS2561DL1-1Y-V-A`
- `PS2561DL2-1Y-A`
- `PS2561DL2-1Y-V-A`
- `PS2561DL2-1Y-F3-A`
- `PS2561DL2-1Y-V-F3-A`

## CAD (KiCad official)

- Symbol: `PS2561D-1Y-V-A`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `ps2561d-1y-v-a-etched.step` / `ps2561d-1y-v-a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ps2561d-1y-v-a.step` / `ps2561d-1y-v-a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RENESAS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600620808011976704) (None pp, sha256 `04ff39dc9544e695`, retrieved 2026-08-17, 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/ps2561d-1y-v-a-datasheet.pdf)