# PT4450

**PTC Princeton Tech** · RF Transceiver ICs · SOT-23-6

PT4450 from PTC Princeton Tech, in a SOT-23-6. 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 | OSCOUT | output | Oscillator output of the SAW oscillator; the datasheet gives no further electrical limits for this pin. |
| 2 | VSS | power_in | Ground connection; all voltages are referenced to VSS = 0 V. |
| 3 | PAOUT | output | Power amplifier output, typically +10 dBm at 434 MHz, with the exact output power depending on the power amplifier output matching. |
| 4 | DIN | input | Data input that also enables the chip, with a data rate of 0.5 to 50 Kbps and a standby current of 1 µA maximum when DIN is low. |
| 5 | VDD | power_in | Power supply, recommended 2.2 V to 3.6 V (absolute maximum VSS-0.3 V to VSS+5.0 V). |
| 6 | OSCIN | input | Oscillator input to the SAW oscillator; the datasheet gives no further electrical limits for this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PTC Princeton Tech |
| Package | SOT-23-6 |
| Category | RF And Wireless |
| Pins | 6 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute maximum) | VDD | -0.3 |  | 5 | V | VSS = 0 V; rating printed as VSS-0.3 to Vss + 5.0 | 4 |
| Operating temperature (absolute maximum) | Topr | -40 |  | 85 | ℃ |  | 4 |
| Storage temperature (absolute maximum) | Tstg | -65 |  | 150 | ℃ |  | 4 |
| Soldering temperature (absolute maximum) | TSLD |  |  | 255 | ℃ |  | 4 |
| Soldering time (absolute maximum) | tSLD |  |  | 10 | Sec. |  | 4 |
| Supply voltage range (recommended operating) | VDD | 2.2 | 3 | 3.6 | V | VSS = 0 V | 4 |
| Operating temperature (recommended operating) | TA | -40 | 25 | 85 | ℃ |  | 4 |
| Supply voltage | VDD | 2.2 | 3 | 3.6 | V |  | 4 |
| Operating current | IDD | 16 |  | 18 | mA | DIN=High(CW mode); POUT = 10 dBm | 4 |
| Standby current | Istandby |  |  | 1 | μA | DIN = Low; TDELAY > 50 ms | 4 |
| Frequency range | fRF | 250 |  | 500 | MHz |  | 4 |
| Data rate | DRATE | 0.5 | 2 | 50 | Kbps |  | 4 |
| Start up time | TON |  |  | 200 | μs |  | 4 |
| One shot delay time | TDELAY | 50 |  |  | ms |  | 4 |

## CAD (KiCad official)

- Symbol: `PT4450`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `pt4450-etched.step` / `pt4450-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pt4450.step` / `pt4450.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PTC Princeton Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177567828795392) (6 pp, sha256 `72872b5639f803aa`, retrieved 2026-10-18, 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/pt4450-datasheet.pdf)