PAM8303DBSC from Diodes Incorporated, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OUT+	output	Positive BTL (bridge-tied load) Class-D switching output. Drives one terminal of the speaker via an optional ferrite-bead EMI filter. High-side PMOS / low-side NMOS output stage; RDS(on) ~365 mΩ typ at VDD=5V (MSOP/DFN).
2	PVDD	power_in	Power supply for the H-bridge output stage. Recommended operating range 2.8V to 5.5V (abs max 6.0V). Decouple with 1µF ceramic close to the pin plus a 10µF bulk cap; keep separate from analog VDD trace.
3	VDD	power_in	Analog power supply for the input amplifier, bias and reference. 2.8V to 5.5V operating; decouple with 1µF ceramic close to the pin. Route separately from PVDD back to the supply.
4	IN-	input	Negative differential audio input. AC-coupled through an input capacitor Ci and gain-setting resistor Ri; internal 150 kΩ feedback sets Gain = 2 × 150 kΩ / Ri (V/V). Input biased to VDD/2 internally.
5	IN+	input	Positive differential audio input. AC-coupled through Ci and Ri; for single-ended sources the unused input is AC-grounded through Ci. Input biased to VDD/2 internally.
6	SD	input	Active-low shutdown terminal. Drive low (VIL ≤ 0.3V at VDD=5V) to place the device in shutdown (ISD ≈ 0.5µA typ); drive high (VIH ≥ 1.5V at VDD=5V) for normal operation. Do not leave floating.
7	GND	power_in	Device ground reference. Tie signal-ground return of input components to this pin, then to system ground; keep separated from power-stage ground return per layout guidelines.
8	OUT-	output	Negative BTL Class-D switching output. Drives the opposite speaker terminal from OUT+ (180° out of phase). Use an optional ferrite-bead + capacitor EMI filter for radiated emissions.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	MSOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

PAM8303DBSC
PAM8303DBSCDBYC

CAD (KiCad official)

Symbol: PAM8303DBSC
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Diodes Incorporated datasheet (16 pp, sha256 4ccb55a4051beba8, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF