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

DDTC124EE-7-F

Diodes Incorporated · Digital Transistors · SOT-523

DDTC124EE-7-F from Diodes Incorporated, in a SOT-523. 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	B	input	Input/base pin with built-in 22kΩ series resistor R1; input voltage (pin 1 to pin 2) is rated -10 to +40 V for DDTC124EE.
2	E	power_in	Ground/emitter pin, the reference for the input voltage (pin 1 to 2) and supply voltage (pin 3 to 2).
3	C	output	Output/collector pin; supply voltage (pin 3 to pin 2) is rated up to 50 V, output current 30 mA for DDTC124EE, and IC max 100 mA.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-523
Category	Triode/MOS Tube/Transistor
Pins	3

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input Resistor Tolerance	ΔR1	-30		30	%		3
Resistance Ratio Tolerance	ΔR2/R1	0.8	1	1.2	%		3
Input Voltage (off)	Vl(off)			0.5	V	VCC = 5V, IO = 100µA	3
Input Voltage (on)	Vl(on)		1.9	3	V	VO = 0.3V, IO = 5mA, DDTC124EE	3
Output Voltage	VO(on)		0.1	0.3	V	IO/Il = 10mA/0.5mA, DDTC124EE	3
Input Current	Il			0.36	mA	VI = 5V	3
Output Current (off)	IO(off)			0.5	µA	VCC = 50V, VI = 0V	3
DC Current Gain	Gl	56				VO = 5V, IO = 5mA	3
Supply Voltage	VCC			50	V	Pin 3 to 2, TA = +25°C	2
Input Voltage	VI	-10		40	V	Pin 1 to 2, DDTC124EE	2
Output Current	IO			30	mA	DDTC124EE	2
Output Current IC (Max)	IC			100	mA		2
Power Dissipation	PD			150	mW	TA = +25°C, Notes 5 & 6	2
Operating and Storage Temperature Range	TJ, TSTG	-55		150	°C		2
Thermal Resistance, Junction to Ambient Air	RθJA		833		°C/W	Note 5, minimum recommended pad layout	2
Input Resistor R1, R2 nominal	R1, R2		22		kΩ	DDTC124EE (NOM)	1
Transition frequency	fT		250		MHz	VCE = -10V, IE = 5mA, f = 100MHz	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	• Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208	1

CAD (KiCad official)

Symbol: DDTC124EE-7-F
Footprint: Package_TO_SOT_SMD:SOT-523
3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
3D model files: ddtc124ee-7-f-etched.step / ddtc124ee-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc124ee-7-f.step / ddtc124ee-7-f.glb are the bare package body.

Provenance

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

Datasheet: Diodes Incorporated datasheet (10 pp, sha256 56302da36e458e57, retrieved 2026-10-26, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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