# PA1517G-D18-T

**UTC(Unisonic Tech)** · Audio Power OpAmps · DIP-18

PA1517G-D18-T from UTC(Unisonic Tech), in a DIP-18. 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 | -INV1 | input | Non-inverting input of channel 1, with a typical input impedance of 60 kΩ (50 kΩ min, 75 kΩ max) and a 220 nF series coupling capacitor in the typical application. |
| 2 | SGND | power_in | Signal ground, which is the ground reference for the input stage and is kept separate from power ground in the typical application. |
| 3 | SVRR | passive | Output of the supply voltage ripple rejection stage, decoupled with a 100 µF capacitor to ground in the typical application (ripple rejection 48 dB min). |
| 4 | OUT1 | output | Channel 1 power output, rated for 2.5 A repetitive and 4 A non-repetitive peak current and AC/DC short-circuit safe to ground and VCC. |
| 5 | PGND | power_in | Power ground (substrate), the return for the output power stages. |
| 6 | OUT2 | output | Channel 2 power output, rated for 2.5 A repetitive and 4 A non-repetitive peak current and AC/DC short-circuit safe to ground and VCC. |
| 7 | VCC | power_in | Supply voltage input, 6.0 V to 18.0 V operating (14.4 V typical), with an absolute maximum of 18 V operating and 20 V with no signal. |
| 8 | M/SS | input | Mute/standby switch input: the device is on above 8.5 V (up to 18 V), muted between 3.3 V and 6.4 V, and in standby below 2 V (ISB below 100 µA). |
| 9 | -INV2 | input | Non-inverting input of channel 2, with a typical input impedance of 60 kΩ (50 kΩ min, 75 kΩ max) and a 220 nF series coupling capacitor in the typical application. |
| 10 | GND | power_in | Ground pin. |
| 11 | GND | power_in | Ground pin. |
| 12 | GND | power_in | Ground pin. |
| 13 | GND | power_in | Ground pin. |
| 14 | GND | power_in | Ground pin. |
| 15 | GND | power_in | Ground pin. |
| 16 | GND | power_in | Ground pin. |
| 17 | GND | power_in | Ground pin. |
| 18 | GND | power_in | Ground pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | DIP-18 |
| Category | Amplifiers |
| Pins | 18 |

## CAD (KiCad official)

- Symbol: `PA1517G-D18-T`
- Footprint: `Package_DIP:DIP-18_W7.62mm`
- 3D model: DIP-18 (KiCad packages3D, STEP)
- 3D model files: `pa1517g-d18-t-etched.step` / `pa1517g-d18-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pa1517g-d18-t.step` / `pa1517g-d18-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UTC(Unisonic Tech) datasheet](docs/pa1517g-d18-t-datasheet.pdf) (9 pp, sha256 `94a1c22e77ca1f58`, retrieved 2026-10-29, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/pa1517g-d18-t-datasheet.pdf)