Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Download PDF

Contents

Pinout
Key specifications
Electrical characteristics
Materials and finish
CAD (KiCad official)
Provenance

README

markdown

ZLLS400QTA

Diodes Incorporated · Schottky Diodes · SOD-323

ZLLS400QTA from Diodes Incorporated, 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	K	passive	Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2	A	passive	Anode.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOD-323
Category	Diodes
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
Continuous Reverse Voltage	VR			40	V	TA = +25°C	2
Continuous Forward Current	IF			0.52	A	TA = +25°C	2
Peak Repetitive Forward Current	IFPK			0.85	A	Rectangular Pulse Duty Cycle	2
Non-Repetitive Forward Current	IFSM			12	A	t ≤ 100µs	2
Non-Repetitive Forward Current	IFSM			2.5	A	t ≤ 10ms	2
Power Dissipation, Single Die Continuous	PD			330	mW	TA = +25°C	2
Power Dissipation, Single Die	PD			390	mW	TA = +25°C, measured at t < 5 secs	2
Thermal Resistance, Junction to Ambient	RθJA		379		°C/W	Note 5: 25mm x 25mm FR4 PCB, 1oz copper, still air	2
Thermal Resistance, Junction to Ambient	RθJA		317		°C/W	Note 6: FR4 PCB, t < 5 secs	2
Junction Temperature	TJ			150	°C		2
Storage Temperature Range	TSTG	-55		150	°C		2
Reverse Breakdown Voltage	V(BR)R	40	60		V	IR = 200µA	3
Forward Voltage	VF		305	360	mV	IF = 50mA	3
Forward Voltage	VF		335	390	mV	IF = 100mA	3
Forward Voltage	VF		395	450	mV	IF = 250mA	3
Forward Voltage	VF		445	500	mV	IF = 400mA	3
Forward Voltage	VF		550	630	mV	IF = 750mA	3
Forward Voltage	VF		620	710	mV	IF = 1A	3
Forward Voltage	VF		710	800	mV	IF = 1.5A	3
Forward Voltage	VF		405		mV	IF = 400mA, TA = +100°C	3
Reverse Current	IR		6	10	µA	VR = 30V	3
Reverse Current	IR		370		µA	VR = 30V, TA = +85°C	3
Diode Capacitance	CD		15		pF	f = 1MHz, VR = 30V	3
Reverse Recovery Time	trr		3		ns	Switched from IF = 500mA to VR = 5.5V Measured @ IR = 50mA di/dt = 500mA/ns Rsource = 6Ω, Rload = 10Ω	3
Reverse Recovery Charge	Qrr		210		pC		3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts		tin	• Terminal Connections: Cathode Band • Terminals: Finish, Matte Tin Annealed over Alloy 42 Leadframe.	1

CAD (KiCad official)

Symbol: ZLLS400QTA
Footprint: Diode_SMD:D_SOD-323
3D model: SOD-323 (KiCad packages3D, STEP)
3D model files: zlls400qta-etched.step / zlls400qta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); zlls400qta.step / zlls400qta.glb are the bare package body.

Provenance

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

Datasheet: Diodes Incorporated datasheet (6 pp, sha256 0bf2d6bf35292d08, retrieved 2026-10-22, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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