component
DDTA124XE-7-F
Public Made by Adomby adom
Diodes Incorporated Digital Transistors, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownDDTA124XE-7-F
Diodes Incorporated · Digital Transistors · SOT-523
DDTA124XE-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 | IN | input | Input terminal (base side of the pre-biased transistor, through the built-in input resistor R1), with input voltage rated +10 to -40 V for DDTA124XE per the absolute maximum ratings. |
| 2 | GND | power_in | Common ground (emitter) terminal; the supply voltage VCC is rated -50 V from pin 2 to pin 3. |
| 3 | OUT | output | Output (collector) terminal, with output current limited to -50 mA for DDTA124XE per the absolute maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input resistor R1 (nominal) | R1 | 22 | kΩ | 1 | |||
| Resistance ratio R2 (nominal) | R2 | 47 | kΩ | 1 | |||
| Input Resistor Tolerance | R1 | -30 | 30 | % | 3 | ||
| Resistance Ratio Tolerance | R2/R1 | -20 | 20 | % | 3 | ||
| Input Voltage (OFF) | Vl(OFF) | -0.4 | V | VCC = -5V, IO = -100µA | 3 | ||
| Input Voltage (ON) | Vl(ON) | -2.5 | V | VO = -0.3V, IO = -2mA | 3 | ||
| Output Voltage | VO(ON) | -0.1 | -0.3 | V | IO/Il = -10mA/-0.5mA (All Others) | 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 | 68 | VO = -5V, IO = -10mA | 3 | |||
| Supply Voltage | VCC | -50 | V | 2 | |||
| Input Voltage | VIN | -40 | 10 | V | 2 | ||
| Output Current | IO | -50 | mA | 2 | |||
| Output Current All | IC(MAX) | -100 | mA | 2 | |||
| Power Dissipation | PD | 150 | mW | Mounted on FR4 PC Board with minimum recommended pad layout (Note 5) | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RJA | 833 | °C/W | Mounted on FR4 PC Board with minimum recommended pad layout (Note 5) | 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:
DDTA124XE-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:
ddta124xe-7-f-etched.step/ddta124xe-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ddta124xe-7-f.step/ddta124xe-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (6 pp, sha256
1a64ca8b52dbad5b, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).