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DDTC124EE-7-F

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Diodes Incorporated Digital Transistors, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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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