# TLP170J

**TOSHIBA** · Solid State Relays (MOS Output) · SOP-4-2.54mm

TLP170J from TOSHIBA, 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 | Anode | input | LED anode; the datasheet rates LED forward current at 50 mA max (derated 0.5 mA/°C above 25 °C) and reverse voltage at 5 V max. |
| 2 | Cathode | passive | LED cathode; the LED reverse voltage rating is 5 V max, and the trigger LED current is 1 mA max (IFT, ION = 90 mA). |
| 3 | Drain | passive | Photo-MOSFET output drain terminal; OFF-state output voltage is rated 600 V min (Peak OFF-state voltage) and ON-state current 90 mA max. |
| 4 | Drain | passive | Photo-MOSFET output drain terminal, the second drain pin of the 1-Form-A output; OFF-state output voltage is rated 600 V and ON-state current 90 mA max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| 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 current | IF |  |  | 50 | mA |  | 2 |
| Forward current derating (Ta ≥ 25°C) | ∆IF/°C |  |  | -0.5 | mA/°C | Ta ≥ 25°C | 2 |
| Pulse forward current | IFP |  |  | 1 | A | 100 μs pulse, 100 pps | 2 |
| Reverse voltage | VR |  |  | 5 | V |  | 2 |
| Diode power dissipation | PD |  |  | 50 | mW |  | 2 |
| Diode power dissipation derating (Ta ≥ 25°C) | △PD/°C |  |  | -0.5 | mW/°C | Ta ≥ 25°C | 2 |
| Junction temperature (LED) | Tj |  |  | 125 | °C |  | 2 |
| OFF-state output terminal voltage | VOFF |  |  | 600 | V |  | 2 |
| ON-state current | ION |  |  | 90 | mA |  | 2 |
| ON-state current derating (Ta ≥ 25°C) | ∆ION/°C |  |  | -0.9 | mA/°C | Ta ≥ 25°C | 2 |
| Output power dissipation | PO |  |  | 300 | mW |  | 2 |
| Output power dissipation derating (Ta ≥ 25°C) | ΔPO/°C |  |  | -3 | mW/°C | Ta ≥ 25°C | 2 |
| Junction temperature (detector) | Tj |  |  | 125 | °C |  | 2 |
| Storage temperature range | Tstg | -55 |  | 125 | °C |  | 2 |
| Operating temperature range (absolute maximum) | Topr | -40 |  | 85 | °C |  | 2 |
| Lead soldering temperature | Tsol |  |  | 260 | °C | 10 s | 2 |
| Isolation voltage (absolute maximum rating) | BVS |  |  | 1500 | Vrms | AC, 60 s, R.H. ≤ 60 % | 2 |
| Supply voltage | VDD |  |  | 480 | V |  | 2 |
| Forward current | IF |  | 2 | 25 | mA |  | 2 |
| ON-state current | ION |  |  | 70 | mA |  | 2 |
| Operating temperature | Topr | -20 |  | 65 | °C |  | 2 |
| Forward voltage | VF | 1 | 1.15 | 1.3 | V | IF = 10 mA | 2 |
| Reverse current | IR |  |  | 10 | μA | VR = 5 V | 2 |
| OFF-state current | IOFF |  | 1 | 1000 | nA | VOFF = 600 V | 2 |
| Trigger LED current | IFT |  | 0.4 | 1 | mA | ION = 90 mA | 3 |
| Return LED current | IFC | 0.1 |  |  | mA | IOFF = 100 μA | 3 |
| ON-state resistance (t < 1 s) | RON |  |  | 40 | Ω | ION = 90 mA, IF = 2 mA, t < 1 s | 3 |
| ON-state resistance (continuous) | RON |  | 45 | 60 | Ω | ION = 90 mA, IF = 2 mA, continuous | 3 |
| Isolation voltage | BVS | 1500 |  |  | Vrms | AC, 60 s | 3 |
| Turn-on time (IF = 2 mA) | tON |  | 2 | 8 | ms | RL = 200 Ω, VDD = 10 V, IF = 2 mA (Note 2) | 3 |
| Turn-on time (IF = 5 mA) | tON |  |  | 5 | ms | RL = 200 Ω, VDD = 10 V, IF = 5 mA (Note 2) | 3 |
| Turn-off time | tOFF |  | 0.5 | 3 | ms | RL = 200 Ω, VDD = 10 V, IF = 2 mA (Note 2) | 3 |

## CAD (KiCad official)

- Symbol: `TLP170J`
- Footprint: `Package_SO:SOP-4_3.8x4.1mm_P2.54mm`
- 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files: `tlp170j-etched.step` / `tlp170j-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlp170j.step` / `tlp170j.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588929286129012736) (6 pp, sha256 `0de985bc94359c22`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/tlp170j-datasheet.pdf)