# TCLD1000

**Vishay Intertech** · Solid State Relays - MOS Output (PhotoMOS) · SOP-4-2.54mm

TCLD1000 from Vishay Intertech, in a SOP-4-2.54mm. 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 | A | input | Anode of the GaAs infrared emitting diode, with absolute maximum forward current of 60 mA and reverse voltage of 6 V. |
| 2 | C | input | Cathode of the infrared emitting diode, the return for the input forward current (IF max 60 mA). |
| 3 | E | passive | Emitter of the darlington phototransistor, with emitter-collector voltage rated at 7 V maximum. |
| 4 | C | passive | Collector of the darlington phototransistor, with VCEO of 35 V maximum and collector current of 80 mA maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | SOP-4-2.54mm |
| Category | Optocoupler/LED/Digital Tube/Photoelectric Device |
| Pins | 4 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF |  | 1.1 | 1.4 | V | IF = 20 mA | 2 |
| Junction capacitance | Cj |  | 50 |  | pF | VR = 0 V, f = 1 MHz | 2 |
| Collector emitter voltage | VCEO | 32 |  |  | V | IC = 1 mA | 2 |
| Emitter collector voltage | VECO | 7 |  |  | V | IE = 100 μA | 2 |
| Collector emitter leakage current | ICEO |  | 15 | 100 | nA | VCE = 10 V, IF = 0 A | 2 |
| Collector emitter saturation voltage | VCEsat |  |  | 1 | V | IF = 20 mA, IC = 5 mA | 2 |
| Cut-off frequency | fc |  | 10 |  | kHz | VCE = 5 V, IF = 10 mA, RL = 100 Ω | 2 |
| Coupling capacitance | Ck |  | 0.3 |  | pF | f = 1 MHz | 2 |
| Current transfer ratio IC/IF | CTR | 600 | 800 |  | % | VCE = 2 V, IF = 1 mA | 2 |
| Rise time | tr |  |  | 300 | μs | VCE = 2 V, IC = 10 mA, RL = 100 Ω | 3 |
| Turn-off time | toff |  |  | 250 | μs | VCE = 2 V, IC = 10 mA, RL = 100 Ω | 3 |
| Partial discharge test voltage - routine test | Vpd | 2 |  |  | kV | 100 %, ttest = 1 s | 3 |
| Partial discharge test voltage - lot test | Vpd | 1.68 |  |  | kV | tTr = 60 s, ttest = 10 s | 3 |
| Safety forward current | Isi |  |  | 130 | mA |  | 3 |
| Safety power dissipation | Pso |  |  | 265 | mW |  | 3 |
| Rated impulse voltage | VIOTM |  |  | 8 | kV |  | 3 |
| Safety temperature | Tsi |  |  | 150 | °C |  | 3 |
| Input reverse voltage | VR |  |  | 6 | V | Tamb = 25 °C | 1 |
| Input forward current | IF |  |  | 60 | mA | Tamb = 25 °C | 1 |
| Forward surge current | IFSM |  |  | 1.5 | A | tp ≤ 10 μs | 1 |
| Input power dissipation | Pdiss |  |  | 100 | mW | Tamb = 25 °C | 1 |
| Input junction temperature | Tj |  |  | 125 | °C | Tamb = 25 °C | 1 |
| Collector emitter voltage | VCEO |  |  | 35 | V |  | 2 |
| Emitter collector voltage | VECO |  |  | 7 | V |  | 2 |
| Collector current | IC |  |  | 80 | mA |  | 2 |
| Collector peak current | ICM |  |  | 100 | mA | tp/T = 0.5, tp ≤ 10 ms | 2 |
| Output power dissipation | Pdiss |  |  | 150 | mW |  | 2 |
| Output junction temperature | Tj |  |  | 125 | °C |  | 2 |
| Isolation test voltage (RMS) | VISO |  |  | 5000 | VRMS |  | 2 |
| Total power dissipation | Ptot |  |  | 250 | mW |  | 2 |
| Operating ambient temperature range | Tamb | -55 |  | 100 | °C |  | 2 |
| Storage temperature range | Tstg | -55 |  | 150 | °C |  | 2 |
| Soldering temperature | Tsld |  |  | 260 | °C | Wave soldering three cycles allowed | 2 |

## CAD (KiCad official)

- Symbol: `TCLD1000`
- Footprint: `Package_SO:SOP-4_3.8x4.1mm_P2.54mm`
- 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files: `tcld1000-etched.step` / `tcld1000-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tcld1000.step` / `tcld1000.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](docs/tcld1000-datasheet.pdf) (6 pp, sha256 `80f56de48252cb64`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/tcld1000-datasheet.pdf)