# TSD05DYFR

**Texas Instruments** · ESD And Surge Protection (TVS/ESD) · SOD-323

TSD05DYFR from Texas Instruments, in a SOD-323. 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 | IO | bidirectional | I/O protected channel; for TSD05 the reverse standoff voltage VRWM is 5.5 V, maximum reverse leakage at 5.5 V is 50 nA, and the line capacitance is 19 pF typical at 0 V, 1 MHz. |
| 2 | GND | power_in | Ground reference pin; the TVS diode provides the clamping path from the protected I/O pin to this ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOD-323 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 反向关断电压 (VRWM) | VRWM |  | 5.5 |  | V | IIO < 50nA，在工作温度范围内 | 6 |
| 击穿电压 (VBR) | VBR |  | 6 |  | V | IIO = 1mA，IO 至 GND | 6 |
| 反向漏电流 (ILEAK) | ILEAK |  | 5 | 50 | nA | VIO = 5.5V，IO 至 GND | 6 |
| 正向电压 (VFWD) | VFWD |  | 0.7 |  | V | IIO = 1mA，GND 至 IO | 6 |
| 浪涌钳位电压 (VCLAMP) | VCLAMP |  | 8 | 11.5 | V | IPP = 24A，IO 至 GND，tp = 8/20µs | 6 |
| 浪涌钳位电压 (VCLAMP) | VCLAMP |  | 9 | 15 | V | IPP = 60A，IO 至 GND，tp = 8/20µs | 6 |
| 浪涌钳位电压 (VCLAMP) | VCLAMP |  | 5.5 |  | V | IPP = 60A，GND 至 IO，tp = 8/20µs | 6 |
| TLP 钳位电压 | VCLAMP_TLP |  | 7.5 |  | V | IPP = 16A，IO 至 GND，tp = 100ns | 6 |
| TLP 钳位电压 | VCLAMP_TLP |  | 2.5 |  | V | IPP = 16A，GND 至 IO，tp = 100ns | 6 |
| 线路电容 (CL) | CL |  | 19 |  | pF | VIO = 0V；ƒ = 1MHz，IO 至 GND | 6 |
| IEC 61000-4-5 功率 (tp 8/20µs) | PPP |  |  | 529 | W | 25°C，IEC 61000-4-5，tp = 8/20µs | 4 |
| IEC 61000-4-5 电流 (tp 8/20µs) | IPP |  |  | 60 | A | 25°C，IEC 61000-4-5，tp = 8/20µs | 4 |
| 环境运行温度 | TA | -55 |  | 150 | °C |  | 4 |
| 存储温度 | Tstg | -65 |  | 155 | °C |  | 4 |
| 自然通风条件下的工作温度范围 | TA | -55 |  | 150 | °C | 自然通风条件下 | 4 |
| 结至环境热阻 | RθJA |  | 672 |  | °C/W |  | 5 |
| 结至外壳（顶部）热阻 | RθJC(top) |  | 230.5 |  | °C/W |  | 5 |
| 结至电路板热阻 | RθJB |  | 541.4 |  | °C/W |  | 5 |
| 结至顶部特征参数 | ΨJT |  | 64.4 |  | °C/W |  | 5 |
| 结至电路板特征参数 | ΨJB |  | 527.5 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `TSD05DYFR`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `tsd05dyfr-etched.step` / `tsd05dyfr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tsd05dyfr.step` / `tsd05dyfr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com.cn/cn/lit/ds/symlink/tsd05.pdf?ts=1739398730409) (16 pp, sha256 `bb8001d3075611a1`, retrieved 2026-10-24, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/tsd05dyfr-datasheet.pdf)