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Datasheet

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Contents

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

README

markdown

DDTC123TUA-7-F

Diodes Incorporated · Digital Transistors · SOT-323-3

DDTC123TUA-7-F from Diodes Incorporated, in a SOT-323-3. 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	IN	input	Base input through the built-in 2.2kΩ (nominal, ±30%) series resistor R1 for DDTC123TUA; VEBO max 5V.
2	GND	power_in	Emitter, connected to ground (0); shown as GND(0) in the device schematic.
3	OUT	output	Collector output of the NPN transistor; IC max 100mA, VCEO 50V, VCBO 50V.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-323-3
Category	Transistors/Thyristors
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
Collector-Base Breakdown Voltage	BVCBO	50			V	IC = 50μA	2
Collector-Emitter Breakdown Voltage	BVCEO	50			V	IC = 1mA	2
Emitter-Base Breakdown Voltage	BVEBO	5			V	IE = 50μA	2
Collector Cutoff Current	ICBO			0.5	µA	VCB = 50V	2
Emitter Cutoff Current	IEBO			0.5	µA	VEB = 4V	2
Collector-Emitter Saturation Voltage	VCE(sat)			0.3	V	IC/IB = 10mA/1mA, 5mA/0.5mA, 2.5mA/0.25mA, 1mA/0.1mA, 5mA/0.5mA, 2.5mA/0.25mA, 1mA/0.1mA, 0.5mA/0.05mA (listed in table order; per-part mapping not explicit in extracted text)	2
DC Current Transfer Ratio	hFE	100	250	600		IC = 1mA, VCE = 5V	2
Input Resistor (R1) Tolerance	∆R1	-30		30	%		2
Input Resistor (R1) nominal	R1		2.2		kΩ	R1(NOM) for DDTC123TUA	1
Collector-Base Voltage	VCBO			50	V	TA = +25°C	2
Collector-Emitter Voltage	VCEO			50	V	TA = +25°C	2
Emitter-Base Voltage	VEBO			5	V	TA = +25°C	2
Collector Current	IC (Max)			100	mA	TA = +25°C	2
Power Dissipation	PD			200	mW	Mounted on FR4 PC Board with minimum recommended pad layout (Note 5), TA = +25°C	2
Thermal Resistance, Junction to Ambient Air	RθJA			625	°C/W	Mounted on FR4 PC Board with minimum recommended pad layout (Note 5), TA = +25°C	2
Operating and Storage Temperature Range	TJ, TSTG	-55		150	°C		2

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: DDTC123TUA-7-F
Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
3D model: SOT-323-3 (KiCad packages3D, STEP)
3D model files: ddtc123tua-7-f-etched.step / ddtc123tua-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddtc123tua-7-f.step / ddtc123tua-7-f.glb are the bare package body.

Provenance

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

Datasheet: Diodes Incorporated datasheet (5 pp, sha256 520b9999de45808f, retrieved 2026-10-16, tier: lcsc)
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